AERCO LTD
F-4/A, 1999-01-26
EQUIPMENT RENTAL & LEASING, NEC
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<PAGE>   1
 
   
   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JANUARY 26, 1999.
    
                                            REGISTRATION STATEMENT NO. 333-66973
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                      ------------------------------------
 
   
                               Amendment No. 2 to
    
                                    FORM F-4
                             REGISTRATION STATEMENT
                                   UNDER THE
                             SECURITIES ACT OF 1933
                      ------------------------------------
 
                                 AERCO LIMITED
             (Exact name of Registrant as specified in its charter)
 
                            JERSEY, CHANNEL ISLANDS
                         (Jurisdiction of organization)
 
                                      7359
            (Primary Standard Industrial Classification Code Number)
 
                                      N/A
                    (I.R.S. Employer Identification Number)
 
                                 AERCO LIMITED
                              22 GRENVILLE STREET
                                   ST. HELIER
                                JERSEY, JE4 8PX
                                CHANNEL ISLANDS
                          ATTENTION: COMPANY SECRETARY
                              (01144 1534) 609 000
   (Address and telephone number of Registrant's principal executive offices)
 
                      ------------------------------------
 
                          CORPORATION SERVICE COMPANY
                               375 HUDSON STREET
                            NEW YORK, NY 10014-3666
                                 (212) 463-2700
           (Name, address and telephone number of agent for service)
 
                                    Copy to:
 
                              THOMAS J. REID, ESQ.
                             DAVIS POLK & WARDWELL
                              1 FREDERICK'S PLACE
                                LONDON EC2R 8AB
                                    ENGLAND
 
        Approximate date of commencement of proposed sale to the public:
   
   As soon as practicable after the Registration Statement becomes effective.
    
 
                      ------------------------------------
 
     THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE SECURITIES AND EXCHANGE COMMISSION, ACTING
PURSUANT TO SAID SECTION 8(A), MAY DETERMINE.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
The Information in this prospectus is not complete and maybe changed. We may
not sell these securities until the registration statement filed with the
Securities and Exchange Commission is effective. This prospectus is not an
offer to sell these securities and we are not soliciting offers to buy these
securities in any state where the offer or sale is not permitted.
 
PROSPECTUS (SUBJECT TO COMPLETION)
   
ISSUED       , 1999
    
 
                                  $800,000,000
                            INITIAL PRINCIPAL AMOUNT
                   OFFER TO EXCHANGE NOTES DUE JULY 15, 2023
              FOR ANY AND ALL OUTSTANDING NOTES DUE JULY 15, 2023
                                       OF
 
                                 AERCO LIMITED
   
  THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON THE 21ST
   BUSINESS DAY FOLLOWING THE COMMENCEMENT OF THE OFFER ON            , 1999,
                                UNLESS EXTENDED
    
 
                            ------------------------
 
   
     AerCo Limited is offering to exchange four subclasses of Notes (the "NEW
NOTES") for each subclass of the issued and outstanding Notes of AerCo Limited
(the "OLD NOTES" and together with the New Notes, the "NOTES"). The terms of the
New Notes are identical to the Old Notes except that the New Notes will be
registered under the Securities Act of 1933, as amended.
    
 
                            ------------------------
 
THE OLD NOTES WERE LISTED ON THE LUXEMBOURG STOCK EXCHANGE ON JULY 15, 1998. THE
  NEW NOTES WILL BE LISTED ON THE LUXEMBOURG STOCK EXCHANGE WHEN THEY ARE
                                    ISSUED.
                            ------------------------
 
   
INVESTING IN THE NEW NOTES INVOLVES RISKS. SEE "RISK FACTORS" BEGINNING ON PAGE
                                      16.
                            ------------------------
    
 
THE SECURITIES AND EXCHANGE COMMISSION AND STATE SECURITIES REGULATORS HAVE NOT
 APPROVED OR DISAPPROVED THESE SECURITIES, OR DETERMINED IF THIS PROSPECTUS
      IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A
                               CRIMINAL OFFENSE.
                            ------------------------
 
   
          , 1999
    
<PAGE>   3
 
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                    PAGE
                                                    ----
<S>                                              <C>
Summary.........................................       3
Summary Consolidated Financial Data.............      12
Risk Factors....................................      16
  Consequences of Failure to Exchange -- Old
    Notes Will Still Have Restrictions on
    Transfer....................................      16
  No Security Interest in the Aircraft..........      16
  Unknown Contingent Liabilities of Our
    Subsidiaries................................      16
  No Executive Management -- Reliance on Third
    Parties to Manage Our Business..............      16
  Conflicts of Interest of Babcock & Brown......      17
  Limitation on Babcock & Brown's Liability.....      17
  Conflicts of Interest of Administrative
    Agent.......................................      17
  Conflicts of Interest of the Board of
    Directors...................................      17
  Lack of Separate Representation...............      17
  Cyclicality of Supply of and Demand for
    Aircraft and Depression of Aircraft
    Values......................................      18
  Actual Market Value may be less than Appraised
    Value.......................................      19
  Future Declines in Appraised Values May Cause
    Suspension of Principal Payments on Class B
    and Class C Notes...........................      19
  Technological Risks...........................      19
  Year 2000 Risk................................      19
  Additional Aircraft May Intensify Existing
    Risks or Present New Risks..................      20
  Disposition of Aircraft-Related Tax
    Benefits....................................      20
  Operational Restrictions May Harm Our Ability
    to Compete..................................      20
  Lessee Purchase Options May be Exercised at
    Prices Below Estimated Fair Market Value....      20
  Risks Relating to Aircraft Liens..............      20
  Failure to Maintain Registration of
    Aircraft....................................      21
  Increased Regulation of Aircraft..............      21
  Leasing Risks.................................      21
  Inability to Terminate Leases or Repossess
    Aircraft....................................      24
  Risks Relating to Payments on the Notes.......      25
  Capital Markets Risks.........................      25
  Bankruptcy Risks..............................      26
  Income Tax Risks..............................      26
  Loss of Certain Irish Tax Benefits............      27
The Exchange Offer..............................      28
  Terms of the Exchange Offer; Period for
    Tendering Old Notes.........................      28
  Procedures for Tendering Old Notes............      28
  Acceptance of Old Notes for Exchange; Delivery
    of New Notes................................      30
  Interest on the New Notes.....................      30
  Book-Entry Transfer...........................      30
  Guaranteed Delivery Procedures................      30
  Withdrawal Rights.............................      31
  Conditions to the Exchange Offer..............      31
  Exchange Agent................................      32
  Fees and Expenses.............................      32
  Transfer Taxes................................      32
  Consequences of Failure to Exchange...........      33
The Parties.....................................      34
  AerCo.........................................      34
  AerFi.........................................      34
  Babcock & Brown...............................      34
The Refinancing of ALPS 94-1 and Acquisition of
  the Transferring Companies....................      37
  Bankruptcy Considerations.....................      37
The Aircraft, Related Leases and Collateral.....      40
  Appraisers' Reports...........................      40
  Portfolio Information.........................      40
  AerCo Portfolio Analysis......................      45
  Acquisition of Additional Aircraft............      45
  The Leases....................................      45
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                                    PAGE
                                                    ----
<S>                                              <C>
  Indemnification and Insurance of the
    Aircraft....................................      47
  The Lessees...................................      49
The Commercial Aviation Industry................      55
  Demand for Aircraft...........................      55
  New Aircraft Supply...........................      56
  Used Aircraft Supply..........................      57
  Operating Leasing.............................      57
  Role of Government............................      57
  Technical Regulation..........................      58
Management of AerCo Group.......................      59
  Directors.....................................      59
  Beneficial Ownership of AerCo.................      60
  The Servicer..................................      61
  Corporate Management..........................      66
Selected Consolidated Financial Data............      69
  Financial Information Presented in this
    Prospectus..................................      69
  ALPS 94-1.....................................      69
Management's Discussion and Analysis of
  Financial Condition and Results of
  Operations....................................      72
  General.......................................      72
  Results of Operations -- Year Ended June 30,
    1998 Compared with Year Ended June 30,
    1997........................................      72
  Results of Operations -- Year Ended June 30,
    1997 Compared with Year Ended June 30,
    1996........................................      75
  Financial Resources and Liquidity.............      77
Unaudited Pro-Forma Combined Financial
  Information...................................      81
Description of the Notes........................      87
  General.......................................      87
  Form..........................................      87
  Payments and Distributions....................      88
  Assumptions...................................      89
  Payment of Principal and Interest.............      98
  The Subclass D-1 Notes........................     129
  The Subclass E-1 Notes........................     129
  The Cash Management Agreement.................     130
  The Accounts..................................     130
  The Trustee...................................     134
Reports to Noteholders..........................     135
Available Information...........................     137
Book-Entry Registration, Global Clearance and
  Settlement....................................     139
  Book-Entry Registration; Deposit Agreement....     139
  Global Clearance and Settlement...............     140
  CUSIP, ISIN and Common Code Numbers...........     143
Tax Considerations..............................     144
  Irish Tax Considerations......................     144
  Irish Taxation of the AerCo Group.............     146
  Certain Jersey Tax Considerations.............     147
  United States Taxation........................     148
ERISA Considerations............................     150
Plan of Distribution............................     150
Legal Matters...................................     151
Experts.........................................     151
Index to Consolidated Financial Statements......     F-1
Independent Auditors' Report....................     F-2
Appendix 1. Index of Defined Terms..............     A-1
Appendix 2. Aircraft Types Data.................     A-3
Appendix 3. Monthly Gross Revenues Based on the
            Assumptions.........................     A-4
Appendix 4. Assumed Portfolio Values for the
            Initial Portfolio...................     A-6
Appendix 5. Class A Class Percentages...........     A-8
Appendix 6. Class B Class Percentages...........    A-11
Appendix 7. Class C Target Principal Balances...    A-14
Appendix 8. Class D Target Principal Balances...    A-17
Appendix 9. Pool Factors........................    A-20
Appendix 10. Extended Pool Factors..............    A-23
</TABLE>
    
 
                                        2
<PAGE>   4
 
                                    SUMMARY
 
   
     You should read the following summary together with the more detailed
information regarding our company and the Notes and the financial statements
(including the notes to the financial statements) appearing elsewhere in this
prospectus.
    
 
   
THE EXCHANGE OFFER
    
 
   
     On July 15, 1998, we issued $800 million in aggregate principal amount of
the Old Notes in four subclasses: Subclass A-1, Subclass A-2, Subclass B-1 and
Subclass C-1. Because we originally issued the Old Notes under an exemption from
registration under the Securities Act, the Old Notes contain transfer
restrictions. We are now offering to exchange the New Notes for the Old Notes.
The New Notes will not contain these transfer restrictions and may be
transferred as we describe under "-- Consequences of Exchanging the Old Notes in
the Exchange Offer". Otherwise, the terms of the New Notes and Old Notes are
identical, except for registration rights and special interest provisions
relating to the Old Notes.
    
 
   
     The exchange offer will expire at 5:00 p.m., New York City time, on
          , unless we extend it. At any time before the expiration date, you may
withdraw any Old Notes that you have tendered in the exchange offer. If we or
the exchange agent do not accept any Old Notes that you have tendered, we or the
exchange agent will return the Old Notes to you without expense as soon as is
practicable after the exchange offer has expired or has been terminated.
    
 
   
     Neither you nor our company will recognize any income, gain or loss for
U.S. federal income tax purposes because you exchange your Old Notes.
    
 
   
     You should refer to "The Exchange Offer" below for more details about the
procedures for tendering the Old Notes and the other terms of the exchange
offer.
    
 
   
CONSEQUENCES OF EXCHANGING OLD NOTES IN THE EXCHANGE OFFER
    
 
   
     Based upon interpretations contained in letters issued to third parties by
the staff of the Commission, we believe that any holder of Old Notes (other than
a broker-dealer, as set forth below, or any holder who is an "affiliate" of
AerCo within the meaning of Rule 405 under the Securities Act) who exchanges its
Old Notes for New Notes in the exchange offer may offer such New Notes for
resale, may resell such New Notes, or transfer such New Notes without compliance
with the registration and prospectus delivery provisions of the Securities Act
if:
    
 
   
     -  the holder acquires the New Notes in the ordinary course of the holder's
        business;
    
 
   
       and
    
 
   
     -  the holder has no arrangement or understanding with any person to
        participate in the distribution of the New Notes.
    
 
   
     If you wish to accept the exchange offer, you must represent to us in the
letter of transmittal that the two conditions described above have been met.
    
 
   
     If you wish to accept the exchange offer, you must also make the following
representations:
    
 
   
     -  If you are not a broker-dealer, you must represent that you are not
        participating in the distribution of the New Notes and that you do not
        intend to participate in the distribution.
    
 
   
     -  If you are a broker-dealer who will not receive New Notes for your own
        account, you must represent that neither you nor any person for whom you
        receive the New Notes is participating in the distribution and that
        neither you nor any such person intends to participate in the
        distribution.
    
 
   
     -  If you are a broker-dealer who will receive New Notes for your own
        account, you must represent that you acquired the Old Notes tendered by
        you in your market-making or other trading activities. You must also
        acknowledge that you will deliver a prospectus if you resell the New
        Notes. By making
    
 
                                        3
<PAGE>   5
 
   
       this acknowledgement and delivering a prospectus, you will not be deemed
       to admit that you are an "underwriter" within the meaning of the
       Securities Act.
    
 
   
     To comply with the securities laws of certain states or other
jurisdictions, it may be necessary to qualify for sale or register the New Notes
prior to offering or selling such New Notes. We have agreed to register or
qualify the New Notes held by broker-dealers for offer or sale under the
securities or blue sky laws of such jurisdictions as any holder of the Old Notes
reasonably requests in writing. Unless we are requested, we do not intend to
take any action to register or qualify the New Notes for resale in any such
jurisdictions.
    
 
   
     If you do not exchange your Old Notes for New Notes in the exchange offer,
your Old Notes will continue to be subject to the restrictions on transfer
contained in the legend on the Old Notes. Please refer to "Risk Factors --
Consequences of Failure to Exchange" for a description of these restrictions.
    
 
   
                        SUMMARY DESCRIPTION OF THE NOTES
    
 
   
     The following table sets forth summary information regarding the Notes.
    
 
   
<TABLE>
<CAPTION>
                        SUBCLASS A-1      SUBCLASS A-2      SUBCLASS B-1    SUBCLASS C-1
                            NOTES             NOTES             NOTES           NOTES
                        -------------   -----------------   -------------   -------------
<S>                     <C>             <C>                 <C>             <C>
Aggregate Initial
  Principal Amount...   $ 340,000,000   $     290,000,000   $  85,000,000   $  85,000,000
Ratings:
  DCR................              AA                  AA               A             BBB
  Moody's............             Aa2                 Aa2              A2              --
  Standard & Poor's..              AA                  AA               A             BBB
Interest Rate........   LIBOR + 0.19%       LIBOR + 0.32%   LIBOR + 0.60%   LIBOR + 1.35%
Expected Average Life
  (Years)............             2.0                 3.8             7.7            10.5
Expected Final
  Payment Date.......   July 15, 2000   December 15, 2005   July 15, 2013   July 15, 2013
Final Maturity
  Date...............   July 15, 2023       July 15, 2023   July 15, 2023   July 15, 2023
</TABLE>
    
 
   
     You should not view the ratings on the Notes as a recommendation to buy,
sell or hold the Notes. The ratings only addresses the likelihood of timely
payment of interest on the Notes, as well as the ultimate payment of principal
and any premium. You should also note that the rating agencies have not rated
our ability to pay the full principal amount of any subclass of Notes on the
Expected Final Payment Date for that subclass or any additional interest that we
may be required to pay if the full principal amount is not repaid at that time.
    
 
   
     Terms of the Notes are summarized below.
    
 
   
Payment Dates..............  We must pay interest monthly in arrears on the
                             fifteenth day of each month. If the fifteenth day
                             of a month is not a business day, the relevant
                             payment date will be the next day which is a
                             business day. By business day, we mean a day on
                             which both U.S. dollar deposits may be dealt in on
                             the London inter-bank market and commercial banks
                             and foreign exchange markets are open in New York
                             and London.
    
 
   
Calculation of Interest....  For the purpose of calculating the interest rate
                             payable on the Notes, Bankers Trust Company as
                             reference agent will determine LIBOR for the
                             relevant monthly period two business days before
                             the payment date on which the monthly period
                             begins.
    
 
   
                             Accrued interest will be calculated on outstanding
                             principal balances (and other amounts on which we
                             must pay interest) as of the fourth business day
                             before the monthly period begins.
    
 
                                        4
<PAGE>   6
 
   
Accrued and Unpaid
Interest...................  Any accrued interest that, as a result of the
                             allocation of our available cash collections, we do
                             not pay on any payment date will bear interest at
                             the then current interest rate.
    
 
   
Sources of Note Payments...  Our only sources of payment for the Notes and our
                             other obligations will be:
    
 
   
                             -  the payments made by the lessees under the
                                leases
    
 
   
                             -  proceeds from any sales of our assets
    
 
   
                             -  net payments to us under our swap agreements and
                                other hedging instruments
    
 
   
                             -  interest earned on investments of our cash
                                balances and
    
 
   
                             -  net cash proceeds received from the sale of
                                refinancing notes.
    
 
   
                             We will make payments on the Notes only to the
                             extent of our available cash on each payment date
                             remaining after paying expenses and satisfying
                             other requirements which are described under
                             "Description of the Notes -- Payment of Principal
                             and Interest -- Priority of Payments".
    
 
   
Security for Our
Obligations................  Neither the trustee nor the holders have any
                             security interest, mortgage, charge or other
                             similar interest in any of the aircraft. As
                             security for our obligations under the Notes and to
                             the servicer, the cash manager and the
                             administrative agent, Bankers Trust Company as
                             security trustee has acquired a security interest
                             in:
    
 
   
                             -  the capital stock of our subsidiaries
    
 
   
                             -  our interest in the leases
    
 
   
                             -  our intercompany loans to our subsidiaries
    
 
   
                             -  our cash balances (including investments made
                                with this cash).
    
 
   
Principal Payments.........  We have determined the expected principal payments
                             on the Notes based on assumptions regarding:
    
 
   
                             -  the timing and amount of payments under our
                                current leases and leases we may enter into in
                                the future
    
 
   
                             -  the terms of future leases
    
 
   
                             -  our ability to refinance the Subclass A-1 Notes.
    
 
   
                             Because it is unlikely that actual experience in
                             the future will correspond to these assumptions,
                             the timing and amount of our principal payments on
                             each subclass of Notes will likely vary from the
                             expected principal payments.
    
 
   
Refinancing of the Notes...  We will have the ability to refinance any subclass
                             of the Notes by issuing refinancing notes. Such
                             refinancing notes will rank equally with the
                             subclasses of refinanced Notes and will never rank
                             higher in priority than the Class A Notes.
    
 
   
Redemption.................  We may redeem any subclass of Notes, in whole or in
                             part, on any payment date. The redemption price for
                             a subclass may include a premium over the
                             outstanding principal balance of the subclass.
                             Whether we must pay a premium will depend on the
                             source of money we use to
    
 
                                        5
<PAGE>   7
 
   
                             pay the redemption price. The amount of any premium
                             will also depend on when the redemption occurs. We
                             describe how the redemption price is determined
                             under "Description of the Notes -- Redemption". If
                             we redeem any subclass in part, we will apply the
                             redemption price to that subclass pro rata.
    
 
   
                             We may also redeem each subclass of Notes on any
                             payment date, in whole but not in part, if adverse
                             tax events affecting AerCo occur. In that case, the
                             redemption price will equal the outstanding
                             principal balance of the subclass being redeemed,
                             plus accrued and unpaid interest.
    
 
   
Operating Covenants........  We may not enter into any future lease (other than
                             a renewal, extension or restructuring of an
                             existing lease) unless, this is in compliance with
                             geographic and other concentration limits. We may
                             enter into a future lease not meeting these
                             requirements if the rating agencies have confirmed
                             that such lease will not result in the lowering or
                             withdrawal of their current ratings on any subclass
                             of Notes then outstanding.
    
 
   
Withholding Tax............  We have no obligation to make any additional
                             payments on the Notes for any withholding or
                             deduction from payments on the Notes that must be
                             made under applicable law. If any withholding or
                             deduction is required on the Notes and we do not
                             redeem the Notes, the net amount of interest paid
                             on the Notes will be reduced by the amount of such
                             withholding or deduction. Also, none of our
                             subsidiaries has any obligation under any
                             intercompany loans to make any additional payments
                             for any withholding or deduction that must be made
                             from payments on the intercompany loans under
                             applicable law.
    
 
                                        6
<PAGE>   8
 
   
                        OVERVIEW OF PRIORITY OF PAYMENTS
    
 
   
     The following chart summarizes the order of priority of payments on the
Notes, the Subclass D-1 Notes and the Subclass E-1 Notes and other obligations
of AerCo. We describe the order of priority in more detail in "Description of
the Notes -- Payment of Principal and Interest -- Priority of Payments".
    
 
                  [Chart -- Overview of Priority of Payments]
                                        7
<PAGE>   9
 
   
AERCO
    
 
   
     AerCo Limited ("AERCO") is a special purpose vehicle that owns, directly
and indirectly through its subsidiaries, a portfolio of 34 aircraft and the
related leases. One of the initial 35 aircraft an F100 aircraft was sold on
January 8, 1999. As of January 18, 1999, the aircraft had a total appraised
value of $896.0 million and were leased to 26 operators in 18 countries.
    
 
   
     Management.  As a special purpose vehicle, we have no employees or
executive officers. Therefore we rely on the servicer, the administrative agent,
the cash manager and others to provide the services we need to operate our
business.
    
 
   
     Babcock & Brown Limited ("BABCOCK & BROWN") is the servicer of our
aircraft. Babcock & Brown markets the aircraft for lease or sale. Babcock &
Brown also monitors whether our lessees are complying with the terms of their
leases and performs other aircraft services for us.
    
 
   
     AerFi Administrative Services Limited, a subsidiary of AerFi Group plc, is
the administrative agent. The administrative agent provides us with corporate,
administrative, accounting and treasury services. In addition, it monitors the
performance of the servicer.
    
 
   
     AerFi Cash Manager II Limited, a subsidiary of AerFi Group plc, is the cash
manager. The cash manager invests our funds in permitted investments and manages
our interest rate management policy.
    
 
   
     Additional Aircraft.  We intend to acquire additional aircraft assets and
any related leases from various sellers. Additional aircraft may include
aircraft, engines and companies with an ownership or leasehold interest in
aircraft or engines. Additional aircraft may also have a different servicer from
Babcock & Brown. Under the servicing agreement, we have the option to appoint
Babcock & Brown as servicer of additional aircraft on the same terms that apply
to our current fleet of aircraft.
    
 
   
     We will finance the acquisition of additional aircraft by issuing
additional notes in up to five classes: Class A, Class B, Class C, Class D, and
Class E. Each class of additional notes may have one or more subclasses. Each
class of additional notes will rank equally in right of payment of principal and
interest with the same class of Notes then outstanding.
    
 
   
     We will be able to acquire additional aircraft and issue additional notes
only if we meet various conditions in the indenture governing the Notes. The
main condition is that we must receive confirmation from the rating agencies
(Duff & Phelps Credit Rating Co., Moody's Investors Service, Inc. and Standard &
Poor's Ratings Group, Inc.,) that the acquisition will not result in the
lowering or withdrawal of their current ratings of any subclass of Notes.
    
 
   
     Cash flows from any additional aircraft will be available to pay our
obligations, including the Notes and any additional notes. There is no limit on
the value of the additional aircraft that we may acquire.
    
 
   
     Aircraft Sales.  We may sell aircraft if lessees that have purchase options
exercise those options. Otherwise, we may sell aircraft under the indenture if
the sales proceeds meet target prices for the aircraft (except for sales in any
year that do not exceed 10% of the portfolio's appraised value) and the sale
does not cause us to breach the indenture's portfolio concentration limits.
    
 
   
     We may also make more limited transfers of aircraft ownership. We may make
these more limited transfers to investors who wish to acquire the depreciation
and other tax benefits that may be available to owners of aircraft under the
laws of the investor's jurisdiction. These transactions may take many different
forms. Our ability to sell the tax benefits related to an aircraft is also
subject to conditions in the indenture. The main condition is that we must
receive confirmation from the rating agencies that the sale will not result in
the lowering or withdrawal of their current rating of any subclass of Notes.
    
   
    
 
                                        8
<PAGE>   10
 
   
                                 THE PORTFOLIO
    
 
   
     The following pie charts summarize our exposure as of January 18, 1999 to
various types of aircraft, lessees, ages of aircraft, the regions and countries
in which lessees are based and aircraft noise restrictions. We have calculated
all percentages by reference to the appraised value (as of January 18, 1999) of
the aircraft.
    
 
[Exposure to Type of Aircraft]       [Exposure to Year of Aircraft Manufacture]
 
[Exposure to Region in which              [Exposure to Individual Lessees]
     Lessees are Based] 
 
[Exposure of Aircraft to Noise            [Exposure to Countries in which
        Restrictions]                           Lessees are Based]
 
 
                                        9
<PAGE>   11
 
   
                              OWNERSHIP STRUCTURE
    
 
                         [CHART -- OWNERSHIP STRUCTURE]
 
   
     We may establish or acquire additional subsidiaries for the purpose of
acquiring additional aircraft. We may also establish additional subsidiaries for
the purpose of leasing aircraft from other AerCo subsidiaries and sub-leasing
them to operators when there are business or other reasons to do so.
    
 
   
     AerFi may dispose of all or a portion of its Class D and Class E Notes.
    
 
                                       10
<PAGE>   12
 
   
                                 PAYMENT FLOWS
    
 
                            [CHART -- PAYMENT FLOWS]
 
   
     This chart assumes that we do not acquire any additional aircraft.
    
 
                                       11
<PAGE>   13
 
                      SUMMARY CONSOLIDATED FINANCIAL DATA
 
   
FINANCIAL INFORMATION PRESENTED IN THIS PROSPECTUS
    
 
   
     AerCo was formed on June 4, 1998 and did not conduct any business
operations until it acquired its aircraft portfolio and issued the Old Notes on
July 15, 1998. As a result, this prospectus does not include historical
financial information for AerCo.
    
 
   
     The summary consolidated financial data set forth below have been extracted
or derived from the audited consolidated financial statements of ALPS 94-1, the
predecessor business, for each of the fiscal years ended June 30, 1995, 1996 and
1997 which have been audited by Arthur Andersen, independent chartered
accountants, and for the fiscal year ended June 30, 1998, which have been
audited by KPMG, independent chartered accountants. The audited consolidated
financial statements of ALPS 94-1 for 1996, 1997 and 1998 are included elsewhere
in this prospectus.
    
 
   
     The summary consolidated financial data include the results of operations
and financial position relating to the 27 aircraft originally acquired by ALPS
94-1 from AerFi in August 1994, including:
    
 
   
     -  the Boeing 767-300ER aircraft that was purchased by AerFi from ALPS 94-1
        prior to the closing of the offering of the Old Notes and was not among
        the initial aircraft of AerCo.
    
 
   
     -  the A300-B4-200 aircraft up to April 28, 1998. This aircraft was
        acquired by AerFi from ALPS 94-1 on that date. AerFi subsequently sold
        this aircraft to AerCo at the time the Old Notes were issued.
    
 
   
     We believe that the ALPS 94-1 summary consolidated financial data set forth
below is an appropriate presentation because:
    
 
   
     -  AerCo was formed mainly for the purpose of refinancing the aircraft
        portfolio of ALPS 94-1.
    
 
   
     -  Our initial portfolio included 26 of the 27 aircraft that ALPS 94-1
        originally acquired from AerFi.
    
 
   
     -  The original ALPS 94-1 aircraft represented 79% of our initial portfolio
        by appraised value as at March 1, 1998.
    
 
   
     -  Our ongoing aircraft leasing activities are largely the same as those
        conducted by ALPS 94-1.
    
 
   
     Such data is not indicative of, and will not be comparable with, the
consolidated financial results of AerCo and its subsidiaries ("AERCO GROUP")
during periods since July 15, 1998.
    
 
   
     Financial statements for the 10 aircraft which AerCo acquired from AerFi
(including the A300-B4-200, aircraft referred to above, the "AERFI TRANSFERRED
AIRCRAFT") for the year ended June 30, 1998 are included elsewhere in this
prospectus. These financial statements include information on the A300-B4-200
aircraft only from April 28, 1998, the date AerFi acquired it. The financial
statements for the year ended June 30, 1998 have been audited by KPMG,
independent chartered accountants and for previous years have been audited by
Arthur Andersen independent chartered accountants. These financial statements
are presented on the basis that the AerFi Transferred Aircraft have been
operated separately from AerFi for the period presented. You should note that
the companies owning the AerFi Transferred Aircraft did not conduct any
independent business operations in the period presented.
    
 
   
     We have also included in this prospectus unaudited pro forma combined
financial information for AerCo Group for the year ended June 30, 1998. Such pro
forma combined financial information gives effect, among other things, to the
issuance by AerCo of the Notes, the refinancing of ALPS 94-1, the sale of the
Boeing 767-300ER and other transactions described in "Unaudited Pro Forma
Combined Financial Information".
    
 
ALPS 94-1
 
   
     The ALPS 94-1 summary consolidated financial data set out below have been
extracted or derived from the ALPS 94-1 consolidated financial statements. ALPS
94-1 did not conduct any business operations prior to its acquisition of the
original ALPS 94-1 aircraft from AerFi in 1994. Accordingly, the financial data
for
    
                                       12
<PAGE>   14
 
   
the fiscal year ended June 30, 1995 only includes trading data for the period
from August 24, 1994 to June 30, 1995. These financial statements have been
prepared in accordance with generally accepted accounting principles in the
United Kingdom ("U.K. GAAP"), which differ in certain significant respects from
generally accepted accounting principles in the United States ("U.S. GAAP"). For
a discussion of the principal differences and a reconciliation from U.K. GAAP to
U.S. GAAP of shareholders' equity and net income or loss at and for the fiscal
years ended June 30, 1996, 1997 and 1998, see Notes 22, 23, 24 and 25 to the
ALPS 94-1 audited consolidated financial statements.
    
 
ALPS 94-1 CONSOLIDATED STATEMENT OF OPERATIONS DATA
 
   
<TABLE>
<CAPTION>
                                                                YEAR ENDED JUNE 30
                                                      ---------------------------------------
                                                       1995       1996      1997       1998
                                                      -------   --------   -------   --------
                                                                   ($ THOUSANDS)
<S>                                                   <C>       <C>        <C>       <C>
U.K. GAAP
Revenues
  Aircraft leasing.................................    86,803    102,022   102,121    101,513
Expenses
  Depreciation.....................................   (18,158)   (17,978)  (38,062)   (37,826)
  Additional depreciation..........................        --         --   (34,385)        --
  Provision for permanent diminution in aircraft
     value.........................................        --    (12,000)       --     (8,720)
  Net interest expense.............................   (64,206)   (73,576)  (71,037)   (69,785)
     Exceptional item -- makewhole premium.........        --         --        --    (11,603)
  Other expenses...................................    (3,702)    (5,581)   (5,053)    (6,599)
     Exceptional item -- termination fee...........        --         --        --    (12,700)
Operating profit/(loss)............................       737     (7,113)  (46,416)   (45,720)
  Profit on sale of aircraft.......................        --         --        --      2,426
Reduction in indebtedness..........................        --      6,647    46,273     43,327
Profit/(loss) before taxes.........................       737       (466)     (143)        33
Taxes..............................................       (69)      (200)      143        (33)
Dividends..........................................        (2)        --        --         --
Net income/(loss)..................................       666       (666)       --         --
U.S. GAAP
Depreciation.......................................   (16,442)   (32,338)  (32,339)   (32,053)
Provision for permanent diminution in aircraft
  value............................................        --    (12,000)       --       (520)
Reduction in indebtedness..........................        --         --     5,258         --
Net loss...........................................   (14,850)   (22,028)     (907)   (31,580)
</TABLE>
    
 
                                       13
<PAGE>   15
 
ALPS 94-1 CONSOLIDATED BALANCE SHEET DATA
 
   
<TABLE>
<CAPTION>
                                                                     JUNE 30
                                                  ---------------------------------------------
                                                     1995         1996        1997       1998
                                                  ----------   ----------   --------   --------
                                                                  ($ THOUSANDS)
<S>                                               <C>          <C>          <C>        <C>
U.K. GAAP
Aircraft, net of accumulated depreciation and
  provision for permanent diminution in
  aircraft value...............................      957,021      927,043    854,596    800,090
Total assets...................................    1,038,691    1,019,671    949,033    890,706
  Indebtedness.................................     (976,494)    (946,729)  (871,495)  (786,139)
  Provision for maintenance....................      (29,405)     (39,544)   (46,247)   (44,309)
Total liabilities..............................   (1,038,025)  (1,019,671)  (949,033)  (890,706)
Shareholders' equity...........................          666           --         --         --
U.S. GAAP
Aircraft, net of accumulated depreciation and
  provision for permanent diminution in
  aircraft value...............................      811,149      766,811    734,472    691,713
Indebtedness...................................     (976,494)    (953,376)  (919,157)  (877,128)
Shareholders' equity...........................     (162,438)    (184,466)  (185,373)  (216,953)
</TABLE>
    
 
ALPS 94-1 CONSOLIDATED STATEMENT OF CASH FLOWS AND OTHER DATA
 
   
<TABLE>
<CAPTION>
                                                                YEAR ENDED JUNE 30
                                                      ---------------------------------------
                                                        1995       1996      1997      1998
                                                      --------   --------   -------   -------
                                                                   ($ THOUSANDS)
<S>                                                   <C>        <C>        <C>       <C>
U.K. GAAP
Cash paid in respect of interest...................    (51,147)   (64,002)  (59,872)  (54,815)
Net cash provided by operating activities
  (after payment of interest)......................     66,526     45,532    45,119    45,721
Net cash (used in)/provided by investing
  activities.......................................   (953,859)        --        --    10,386
Net cash provided by/(used in) financing
  activities.......................................    967,496    (36,025)  (43,494)  (59,108)
Net movements in cash..............................     80,163    (25,803)   (2,886)      134
</TABLE>
    
 
SELECTED RATIOS
 
   
<TABLE>
<CAPTION>
                                                                YEAR ENDED JUNE 30
                                                      ---------------------------------------
                                                        1995       1996      1997      1998
                                                      --------   --------   -------   -------
                                                                   ($ THOUSANDS)
<S>                                                   <C>        <C>        <C>       <C>
U.K. GAAP
Ratio of Earnings to Fixed Charges.................      1.011      0.994     0.998     1.000
U.S. GAAP
Ratio of Earnings to Fixed Charges.................      0.770      0.703     0.985     0.548
</TABLE>
    
 
- ---------------
 
   
     In relation to "Ratios of Earnings to Fixed Charges" under both U.K. GAAP
and U.S. GAAP, you should note the following:
    
 
   
     -- Earnings include pretax income from continuing operations plus fixed
        charges. Fixed charges are the total of (1) interest, whether expensed
        or capitalized, (2) amortization of debt expense and discount or premium
        relating to any indebtedness, whether expensed or capitalized and (3)
        such portion of rental expense as can be demonstrated to be
        representative of the interest factor in the particular case.
    
 
   
     -- A ratio of less than one indicates that earnings are inadequate to cover
        fixed charges. The amount by which fixed charges exceeded earnings (1)
        for the years ended June 30, 1996 and 1997 under U.K. GAAP was $0.47
        million and $0.14 million, and (2) for the years ended June 30, 1995,
        1996, 1997 and 1998 under U.S. GAAP was $14.78 million, $21.83 million,
        $1.05 million and $31.55 million.
    
 
                                       14
<PAGE>   16
 
   
     For a discussion of the differences between ALPS 94-1's results of
operations and financial position under U.S. GAAP compared with U.K. GAAP, see
Notes 22, 23, 24 and 25 to the ALPS 94-1 audited consolidated financial
statements and "Management's Discussion and Analysis of Financial Condition and
Results of Operations -- Results of Operations -- Year Ended June 30, 1997
Compared With Year Ended June 30, 1996 -- Differences between U.K. GAAP and U.S.
GAAP".
    
 
                                       15
<PAGE>   17
 
                                  RISK FACTORS
 
   
     You should carefully consider the risks described below before making an
investment decision. The risks and uncertainties described below are not the
only ones facing our company. Additional risks and uncertainties not known to us
at present or that we believe are immaterial today may also impair our business
operations.
    
 
   
     If any of the following risks actually occur, we may not be able to make
the required payments on the Notes. In addition, it is possible that the rental
payments under the leases may not be adequate to make the required payments on
the Notes.
    
 
   
     This prospectus also contains forward-looking statements that involve risks
and uncertainties. In most cases, you can identify forward-looking statements by
terminology such as "may", "should", "expects", "plans", "anticipates",
"believes", "estimates", "predicts", "potential" or "continue" or the negative
of such terms or similar terminology. Our actual results could differ materially
from those anticipated in these forward-looking statements. In evaluating these
statements, you should specifically consider various factors, including the
risks outlined below.
    
 
   
CONSEQUENCES OF FAILURE TO EXCHANGE -- OLD NOTES WILL STILL HAVE RESTRICTIONS ON
TRANSFER
    
 
   
     If you do not exchange your Old Notes for New Notes under the exchange
offer, then you will continue to be subject to the transfer restrictions on the
Old Notes stated in the Offering Memorandum for the offering of the Old Notes.
The Old Notes may not be offered or sold, unless they are registered or the sale
is exempt from the Securities Act and applicable state securities laws. We do
not intend to register the Old Notes under the Securities Act. You should refer
to "Summary -- Consequences of Exchanging Old Notes in the Exchange Offer" and
"The Exchange Offer" for information about how to tender your Old Notes.
    
 
   
     The tender of Old Notes under the exchange offer will also reduce the
principal amount of the Old Notes outstanding, which may mean that it will be
more difficult to sell Old Notes. If the market for the Old Notes becomes less
liquid, the market price of the Old Notes may become more volatile.
    
 
   
NO SECURITY INTEREST IN THE AIRCRAFT
    
 
   
     Neither the trustee, the security trustee nor any noteholder has any
security interest, mortgage, charge or other similar interest in any aircraft.
If there is an event of default, they will not be able to sell the aircraft to
repay the Notes or exercise similar remedies which they would have if they had a
security interest in the aircraft.
    
 
   
UNKNOWN CONTINGENT LIABILITIES OF OUR SUBSIDIARIES
    
 
   
     There is a risk that our subsidiaries could have material contingent
liabilities that are unknown to us. For example, our subsidiaries could have
incurred liabilities to third parties from operating and leasing the aircraft
before we acquired them. When we acquired the ALPS 94-1 capital stock, we
obtained no representations, warranties or indemnities from the seller. AerFi
Group indemnified us for breaches of their representations and warranties
relating to the aircraft-owning companies and aircraft which they sold to us.
These representations and warranties survive until July 15, 2001. Our potential
recovery under them is limited to approximately $185 million. If such a
contingent liability becomes known and we are called on to pay it, we may be
unable to recover the amount of the liability from AerFi Group, the former
shareholders of ALPS 94-1 or any other person. If we have to pay any such
liability ourselves, we may be unable to make the required payments on the
Notes.
    
 
   
NO EXECUTIVE MANAGEMENT -- RELIANCE ON THIRD PARTIES TO MANAGE OUR BUSINESS
    
 
   
     We have no executive management resources of our own. We therefore rely on
several service providers for the leasing and re-leasing of the aircraft and all
other executive and administrative responsibilities. If these service providers
do not perform their contractual obligations to us, our operations may suffer
and we may not be able to repay the Notes. We can give no assurance that we will
continue our arrangements with these
    
                                       16
<PAGE>   18
 
   
service providers or that the service providers will continue their relationship
with us until the Notes are paid in full. If a service provider resigns or we
terminate its appointment, we may be unable to find suitable replacement service
providers that we can engage on suitable terms. Additionally, our appointment of
replacement service providers may cause a lowering or withdrawal of the ratings
on the Notes. You should refer to "Management of AerCo Group -- The Servicer";
and "Management of AerCo Group -- Corporate Management" for detailed information
on the responsibilities delegated to service providers.
    
 
   
     The servicing agreement with Babcock & Brown, unless extended, expires in
2008, which is five years before the expected final payment date of the last
Notes to be repaid. If we cannot extend the existing servicing agreement or find
a replacement servicer, we may be unable to re-lease or sell aircraft. As a
result, we may be unable to make payments on the Notes.
    
 
CONFLICTS OF INTEREST OF BABCOCK & BROWN
 
   
     Babcock & Brown manages a large aircraft portfolio for others (including
its own affiliates) and for that reason, it may face conflicts of interest in
managing and marketing our aircraft for re-lease or sale. The aircraft it
manages for others may compete with our aircraft when they are being marketed
for re-lease or sale. Babcock & Brown also arranges aircraft financings and
lease transactions and advises many airlines (including some lessees and
potential lessees). If Babcock & Brown cannot resolve a conflict of interest,
the conflict could have an adverse effect on our ability to manage, re-lease or
sell the aircraft. In that case, we may be unable to make the required payments
on the Notes.
    
 
   
     For a description of Babcock & Brown's aircraft management and advisory
business, you should refer to "Management of AerCo Group -- The Servicer".
    
 
   
LIMITATION ON BABCOCK & BROWN'S LIABILITY
    
 
   
     Our servicing agreement with Babcock & Brown contains limitations on its
liability for losses caused by its services. There is a risk that we may be
unable to recover from Babcock & Brown the amount of any losses they cause in
performing the services. Additionally, Babcock & Brown will not be liable to you
for any losses caused by its services.
    
 
   
     We describe the liability and other provisions of the servicing agreement
under "Management of AerCo Group -- The Servicer".
    
 
   
CONFLICTS OF INTEREST OF ADMINISTRATIVE AGENT
    
 
   
     In its role as our administrative agent, AerFi Administrative Services may
have conflicts of interest because it also serves as administrative agent to
another aircraft leasing entity, Airplanes Group. These conflicts of interest
may arise, for example, when the administrative agent advises us on our annual
budget and our decisions to re-lease or sell aircraft. We describe the
administrative agent's obligations to us regarding conflicts of interest in
"Management of AerCo Group -- Corporate Management".
    
 
CONFLICTS OF INTEREST OF THE BOARD OF DIRECTORS
 
   
     Our directors may have conflicts of interest resulting from the
relationships they have in the aviation industry. For a description of the
directors' relationships in the aviation industry, you should refer to
"Management of AerCo Group -- Directors."
    
 
LACK OF SEPARATE REPRESENTATION
 
   
     We are represented by the same Jersey, Irish and United States legal
counsel as AerFi Group, and we expect that the multiple representation will
continue. We have not had independent legal representation and consequently the
terms of our agreements and other arrangements with AerFi and its subsidiaries
may be more favorable to AerFi and its subsidiaries than if we had our own
counsel.
    
 
                                       17
<PAGE>   19
 
   
CYCLICALITY OF SUPPLY OF AND DEMAND FOR AIRCRAFT AND DEPRESSION OF AIRCRAFT
VALUES
    
 
   
     The market for commercial jet aircraft is very cyclical and can produce
sharp increases and decreases in aircraft values and lease rates. The aircraft
leasing market is currently near a peak but may decline in the near future.
Decreases in aircraft values or lease rates may cause a decrease in our cash
flows. Depending on market conditions, we may be unable to sell or re-lease
aircraft on terms that allow us to make payments on the Notes.
    
 
   
     Aircraft values and lease rates depend on various factors that are outside
our control:
    
 
   
     -  general economic conditions affecting lessee operations;
    
 
   
     -  used aircraft supply;
    
 
   
     -  interest rates and credit availability;
    
 
   
     -  fuel and other operating costs;
    
 
   
     -  manufacturer production levels and prices for new aircraft;
    
 
   
     -  passenger demand;
    
 
   
     -  retirement and obsolescence of aircraft models;
    
 
   
     -  manufacturers merging or leaving the aircraft industry;
    
 
   
     -  re-introduction into service of aircraft previously in storage;
    
 
   
     -  governmental regulations; and
    
 
   
     -  lack of capacity in the air traffic control system.
    
 
   
     In addition to values for aircraft generally, the value of specific
aircraft may increase or decrease sharply depending on factors that are not
within our control:
    
 
   
     -  maintenance and operating history of the aircraft;
    
 
   
     -  number of operators using a type of aircraft;
    
 
   
     -  legal or regulatory requirements that prevent an aircraft from being
       re-leased or sold in the condition that it is in; and
    
 
   
     -  the discovery of manufacturing defects in an aircraft model.
    
 
   
     There currently exists an oversupply of certain types of used Stage 3
aircraft, especially certain older widebody aircraft such as the Airbus A300 -
B4-200 and Boeing 747-200B. There is one of each aircraft type among the
aircraft in the portfolio representing approximately 1.30% and 3.57% of the
aircraft in the portfolio by appraised value as of January 18, 1999.
    
 
   
     The value of specific aircraft may also depend on the condition of the
manufacturer. For example, since Fokker N.V. ceased operations in 1996, there
have been significant reductions in values and lease rates for Fokker 100s. We
expect these reductions will continue. We have four Fokker 100s (6.49% of the
portfolio by appraised value at January 18, 1999). Likewise, because of its
merger with McDonnell Douglas Corporation, Boeing has announced that it will
discontinue production of MD-83 aircraft in mid-1999. This development is likely
to decrease values and rental rates for these aircraft. We have three MD-83s
(7.06% of the portfolio by appraised value at January 18, 1999).
    
 
   
     Current competition between Boeing and Airbus is also a threat to aircraft
values. Because Airbus and Boeing have decreased new aircraft prices when
adjusted for inflation, orders for their aircraft have recently increased.
Boeing and Airbus have announced production increases to 900 newly delivered
aircraft in 1999. This amount is above the long-term requirement implied by
industry forecasts, including forecasts published by Boeing and Airbus. If most
of these aircraft are delivered, the increased supply of new aircraft may
depress used aircraft values and lease rates (especially in regions like Asia
where there is already oversupply of
    
 
                                       18
<PAGE>   20
 
   
aircraft). This development could cause a decrease in our cash flows and
adversely affect our ability to make payments on the Notes.
    
 
   
ACTUAL MARKET VALUE MAY BE LESS THAN APPRAISED VALUE
    
 
   
     Appraised values for aircraft (also known as base values) do not
necessarily reflect the market value we could obtain for aircraft at a specific
time. Appraised values are based on the assumption that there is an "open,
unrestricted stable market environment with a reasonable balance of supply and
demand". As we describe above, the aircraft market is not always stable and
there may be supply and demand imbalances at any one time, especially for
specific aircraft types. At the current high point in the cycle, the current
market value of some aircraft may be close to their appraised value while the
current market value of others (such as Fokker and older Airbus aircraft) may be
significantly less than appraised values. At a low point in the industry cycle,
the current market value of most aircraft types is likely to be less (and in
many cases, much less) than appraised base values. For these reasons, you should
not rely only on appraised values as an indication of the market value we could
obtain for the aircraft.
    
 
   
FUTURE DECLINES IN APPRAISED VALUES MAY CAUSE SUSPENSION OF PRINCIPAL PAYMENTS
ON CLASS B AND CLASS C NOTES
    
 
   
     Because of the market factors described above, aircraft appraisers have
recently reduced appraised values for aircraft, especially Fokker aircraft and
older widebody aircraft. If future appraised values for the aircraft decline at
a greater rate than we have assumed for purposes of the principal payment
provisions of the indenture, the indenture requires us to accelerate the
scheduled principal payments on the Class A Notes. In that case, principal
payments on the Class B and Class C Notes may be suspended because of the
increased principal amounts we must pay on the Class A Notes.
    
 
TECHNOLOGICAL RISKS
 
   
     The availability of newer, more technologically advanced aircraft or the
introduction of increasingly stringent noise or emissions regulations may make
it more difficult for us to re-lease or sell aircraft. This risk is particularly
significant for us given our need to repay principal and interest on the Notes
over a relatively long period. This will require that many of the aircraft are
leased or sold close to the end of their useful economic life. We expect that
the extent to which we are able to manage these technological risks through
modifications to aircraft and sale of aircraft will be limited.
    
 
YEAR 2000 RISK
 
   
     We may suffer an adverse impact on our business and results of operations
if information technology relied upon by our service providers, suppliers,
financial advisors, lessees, and others with which we conduct business are not
Year 2000 compliant. Many existing computer systems use only two digits to
identify a year in the date field. These systems were designed and developed
without considering the impact of the upcoming change in the century. If not
corrected, many computer applications could fail or create erroneous results by
or at the Year 2000. Aircraft systems (such as on-board aircraft management and
navigation systems) and air traffic control systems depend heavily on
microprocessors and software technology. If any of these systems malfunction
because operators (including lessees) or air traffic control authorities do not
make them Year 2000 compliant, our lessees may be unable to operate their
aircraft and generate the revenues necessary to make lease payments to us. Year
2000 problems could have an adverse effect on other aspects of our operations.
    
 
   
     We have recently begun a process of assessing the potential impact of the
Year 2000 issue on our operations. Since all of our operational functions have
been delegated to outside service providers, we have no information systems of
our own but instead rely on the systems of our service providers. You should
refer to "Management's Discussion and Analysis of Financial Condition and
Results of Operations -- Financial Resources and Liquidity" for a discussion of
the service providers' efforts to assess the Year 2000 issues that we face.
    
 
                                       19
<PAGE>   21
 
   
     We are currently unable to make any estimate of the amount that we may be
required to spend to correct Year 2000 problems because the assessment of our
Year 2000 risks is still at an early stage. However, the expenditures could have
an adverse impact on our ability to make payments on the Notes.
    
 
   
     Any losses that we may incur because of Year 2000 problems may not be
covered under existing insurance, because some insurers have taken the position
that Year 2000 losses may be denied under existing policies. In addition,
insurers in the London market have recently adopted recommendations to exclude
Year 2000 losses from future aviation policies, unless a specific endorsement is
purchased.
    
 
   
ADDITIONAL AIRCRAFT MAY INTENSIFY EXISTING RISKS OR PRESENT NEW RISKS
    
 
   
     We may acquire additional aircraft and related additional leases. It is
possible that our cash flows from additional aircraft will become a more
important source of payment for the Notes and additional notes we may issue than
our cash flows from the aircraft we currently own. We expect that the risks
relating to the aircraft we currently own will also be relevant to additional
aircraft. However additional aircraft may intensify these risks and may also
bring new, unidentified risks.
    
 
DISPOSITIONS OF AIRCRAFT-RELATED TAX BENEFITS
 
   
     In addition to selling aircraft outright, we may make more limited
transfers of aircraft ownership to investors who wish to acquire depreciation or
other tax benefits available to aircraft owners. If we enter into tax-related
dispositions, we will be exposed to the credit risk of the investor. This
includes the risk that we will not be able to recover legal title to the
aircraft (or other aspects of ownership transferred to the investor) if the
investor becomes insolvent. Because the terms of tax-related dispositions are
not standardized, we cannot identify with certainty the nature and the level of
the risks we would face if we entered into these transactions.
    
 
   
OPERATIONAL RESTRICTIONS MAY HARM OUR ABILITY TO COMPETE
    
 
   
     The indenture and our governing corporate documents impose restrictions on
how we operate our business. These restrictions limit our ability to compete
effectively in the aircraft leasing market. For example, we cannot grant
privileged rental rates to airlines in return for equity investments in such
airlines. There are also restrictions on persons to whom we may lease aircraft
to and limits on leasing to lessees in specific geographical regions. Most
competing aircraft lessors do not operate under similar restrictions.
    
 
   
LESSEE PURCHASE OPTIONS MAY BE EXERCISED AT PRICES BELOW ESTIMATED FAIR MARKET
VALUE
    
 
   
     As of January 18, 1999, five lessees had options to purchase a total of six
aircraft (representing 23.57% of the portfolio by appraised value at January 18,
1999). There is a risk that lessees could exercise these options in the future
at prices below the pro rata portion of the unpaid principal represented by the
aircraft being purchased. If that happens, it may reduce the amount, or delay
the timing, of principal payments on the Notes.
    
 
   
RISKS RELATING TO AIRCRAFT LIENS
    
 
   
     Liens may attach to the aircraft in the course of their operation. These
liens may impair our ability to repossess, re-lease or sell the aircraft. Liens
which secure the payment of airport taxes, customs duties, air navigation
charges (including charges imposed by Eurocontrol), landing charges, crew wages,
repairer's charges or salvage attach to the aircraft in the normal course of
operation. The amounts which the liens secure may be substantial and may exceed
the value of the aircraft against which the lien is asserted. In some
jurisdictions, a holder of aircraft liens may have the right to detain, sell or
cause the forfeiture of the aircraft. The lessees may not comply with their
obligations under the leases to discharge liens arising during the terms of the
leases.
    
 
                                       20
<PAGE>   22
 
FAILURE TO MAINTAIN REGISTRATION OF AIRCRAFT
 
   
     All of the aircraft which are or will be operated must be registered with
an appropriate aviation authority. If an aircraft is operated without a valid
registration, the lessee operator or, in some cases, the owner or lessor, may be
subject to penalties which may result in a lien being placed on the aircraft.
Loss of registration could have other adverse effects, including grounding of
the aircraft and loss of insurance, which may have an adverse effect on our
ability to make payments on the Notes.
    
 
   
INCREASED REGULATION OF AIRCRAFT
    
 
   
     The aircraft industry is heavily regulated and aviation authorities may
adopt additional regulations in jurisdictions where our aircraft are registered
or operated. Any additional regulations (especially relating to aircraft noise
and emissions) may cause us to incur significant costs, depress the value of the
aircraft and impair our ability to re-lease aircraft. See "The Commercial
Aviation Industry -- Technical Regulation" for a discussion of aircraft
regulation.
    
 
   
LEASING RISKS
    
 
   
     WE MAY NOT BE ABLE TO RE-LEASE AIRCRAFT QUICKLY OR ON FAVORABLE TERMS
    
 
   
     We may not be able to re-lease the aircraft upon expiration of the leases
without incurring significant downtime. If we cannot re-lease the aircraft we
may not have enough cash to make payments on the Notes. Even if we can re-lease
the aircraft we may be unable to receive favorable rental rates, especially if
there is reduced demand for aircraft on operating lease. Our ability to re-lease
aircraft and obtain acceptable lease payments and terms may suffer because of:
    
 
   
     -  economic conditions affecting the airline industry,
    
 
   
     -  the supply of competing aircraft and demand for particular types,
    
 
   
     -  lessor competition, and
    
 
   
     -  restrictions on our re-leasing flexibility under the indenture.
    
 
   
     The leases for 10 of the aircraft, representing approximately 30.91% of the
portfolio by appraised value at January 18, 1999, are scheduled to expire before
December 31, 2000. The leases for 25 of the aircraft, representing 75.98% of the
portfolio by appraised value at January 18, 1999 are scheduled to expire before
December 31, 2003. Re-leasing may also affect the rental rates we are able to
obtain and may adversely affect our ability to make payments on the Notes,
especially when there is lesser demand for aircraft on operating lease.
    
 
   
     LESSEES MAY NOT PERFORM REQUIRED MAINTENANCE
    
 
   
     The standards of maintenance observed by our lessees and the condition of
the aircraft at the time of sale or lease may offset future values and rental
rates from our aircraft. Under the leases, the lessee has the main
responsibility to maintain the aircraft and to comply with all applicable
governmental requirements. Some lessees may experience periodic difficulties in
meeting their maintenance obligations resulting from adverse environmental
conditions or financial and labor difficulties. If a lessee fails to perform
required or recommended maintenance on an aircraft during the term of such
lease, the aircraft may be grounded and we may incur substantial costs to
restore the aircraft to an acceptable maintenance condition before sale or re-
lease. If our lessees do not perform their obligation to maintain the aircraft,
we may have to fund maintenance work on the aircraft. Because our maintenance
costs are expenses that rank senior to payments on the Notes, we may be unable
to make payments on the Notes if our maintenance costs were to become
sufficiently large. In some cases, we may have an obligation to reimburse the
lessee or pay some or all of the cost of aircraft maintenance. Our cash
resources may not be sufficient both to fund maintenance requirements and make
payments on the Notes, especially as the aircraft age.
    
 
                                       21
<PAGE>   23
 
   
     AIRCRAFT INSURANCE MAY NOT BE ADEQUATE
    
 
   
     Our lessees have an obligation under the leases to maintain property and
liability insurance covering their operation of the aircraft. We can give no
assurance that this insurance will be adequate to cover any losses or
liabilities that we may incur in our business. For example, the loss or
liability from an aviation accident or other catastrophic event may exceed the
coverage limits in the policy. Other losses may not be covered by the insurance.
There is also a risk that our lessees will not perform their insurance
obligations to us, which may mean that insurance will not be available to us. In
either case, we may be unable to make payments on the Notes if insurance
proceeds do not cover losses or liabilities we may incur.
    
 
   
     WE MAY BE UNABLE TO OBTAIN REQUIRED LICENSES AND APPROVALS
    
 
   
     If we cannot obtain required government licenses and approvals, we may be
unable to re-lease or sell aircraft. In that case, our cash flows may be
insufficient to make payments on the Notes. Several leases require specific
licenses, consents or approvals. These include consents from governmental or
regulatory authorities to certain lease payments and to the import, re-export or
de-registration of the aircraft. There is a significant risk that subsequent
legal and administrative changes will increase such requirements or that a
consent, once given, will be withdrawn. We may not receive consents needed in
connection with future re-leasing or sale of an aircraft.
    
 
   
     RISK OF WITHHOLDING TAX ON LEASE RENTALS
    
 
   
     We have attempted to structure our leases in such a way that either no
withholding taxes will be applicable to payments by the lessees under the leases
or, if that happens, the lessees may pay corresponding additional amounts. If
such taxes must be paid and we cannot recover these additional amounts from the
lessee, that amount will be unavailable for Note payments.
    
 
   
     RISK OF LESSEES IN WEAK FINANCIAL CONDITION
    
 
   
     There is a significant risk that the lessees may default on their
obligations under the leases. If lessees do not make rent and maintenance
payments or are significantly in arrears, we will be unable to make payments on
the Notes. The ability of each lessee to perform its obligations under its lease
will depend primarily on its financial condition. A lessee's financial condition
may be affected by various factors beyond their control, including competition,
fare levels, passenger demand, operating costs, the cost and availability of
finance, economic conditions in the countries where the lessees operate and
environmental and other governmental regulation of the air transportation
business. Many of our lessees are in a weak financial position. Investors should
expect this to be the case with future lessees. As a result, a large proportion
of lessees may consistently be significantly in arrears in their rental payments
or maintenance payments. A large portion of our portfolio is concentrated among
a limited number of lessees -- based on appraised values at January 18, 1999,
the 5 lessees who each accounted for more than 5% of the portfolio together
represented 36.36% of the portfolio.
    
 
   
     As of December 31, 1998, five lessees who had a combined total of six
aircraft on lease were in arrears. The amounts outstanding for rental payments,
maintenance reserves, and other amounts due under the leases (net of agreed
deferrals or other restructurings, default interest and certain cash in transit)
was approximately $6.15 million. Of this amount, $5.92 million was outstanding
for more than 30 days.
    
 
   
     PAL, the lessee of two aircraft representing 4.78% of the portfolio by
appraised value at January 18, 1999, has recently suffered severe financial
difficulties. On June 19, 1998, PAL filed a petition for approval of a
rehabilitation plan with the Philippine Securities and Exchange Commission and
subsequently the Philippine SEC appointed an interim receiver. PAL filed a
rehabilitation plan with the Philippine SEC on December 7, 1998.
    
 
   
     At December 31, 1998, $3.31 million (of which $3.15 million was in arrears
for more than 30 days) was outstanding from PAL. Babcock & Brown is in
negotiation with PAL regarding repayment of its arrearages. We cannot assure you
that PAL will ultimately repay its arrearages or be able to pay future lease
rentals. We
    
 
                                       22
<PAGE>   24
 
   
may encounter delays or difficulties in recovering possession of the aircraft
(which are currently operated in the Philippines) or terminating the leases. If
the aircraft are recovered, the technical costs required to ensure the aircraft
are in suitable condition for re-leasing may be significant.
    
 
   
     As of December 31, 1998, another Asian lessee (representing 4.65% of the
portfolio by appraised value at January 18, 1999) owed $2.40 million in rent.
    
 
   
     The environment for commercial aircraft operators in most geographic
regions has been extremely favorable in the past few years. Therefore, the
current level of defaults and lessee arrears should not be seen as
representative of future defaults and arrears as economic conditions
deteriorate. We can give no assurance that defaults and amounts in arrears will
not increase as the market for aircraft on operating lease experiences further
cyclical downturns, particularly in regions such as Asia which is experiencing
acute economic difficulties.
    
 
   
     RISK OF REGIONAL ECONOMIC DOWNTURNS AFFECTING LESSEES FINANCIAL CONDITION
    
 
   
     There is a significant risk that the economic conditions of the regions
where our lessees operate will affect their ability to meet their lease
obligations. Below is a discussion of the regional concentrations of our lessees
and the economic characteristics of the various regions that may impact the
lessees financial condition.
    
 
   
     ASIA PACIFIC CONCENTRATION.  At January 18, 1999, 21.79% of the aircraft by
appraised value at January 18, 1999 were leased by operators in "emerging"
markets in the Asia Pacific region, including China, the Philippines, South
Korea and India. One lessee, Asiana, leased 5.92% of the aircraft by appraised
value at January 18, 1999.
    
 
   
     Trading conditions in Asia's civil aviation industry have been adversely
affected by the severe economic and financial difficulties experienced recently
in the region. The economies of the region have experienced acute difficulties
resulting in many business failures, significant depreciation of local
currencies against the dollar, downgrading of sovereign and corporate credit
ratings and internationally organized financial stability measures. One Asian
lessee recently filed for bankruptcy protection. Several airlines in the region,
including one lessee, recently announced their intention to reschedule their
aircraft purchase obligations, eliminate certain routes and reduce employees.
This downturn in the region's economies may undermine business confidence,
reduce demand for air travel and adversely affect the Asian lessees' operations
and their ability to meet their obligations.
    
 
   
     LATIN AMERICAN CONCENTRATION.  At January 18, 1999, 17.90% of the aircraft
by appraised value at January 18, 1999 were leased by operators in "emerging
markets" in Latin America, principally Brazil, Chile and Colombia. One lessee,
Lan Chile, leased 6.68% of the current portfolio by appraised value at January
18, 1999.
    
 
   
     The financial prospects for lessees in Latin America will depend on the
level of political stability and economic activity and policies in the region.
    
 
   
     Developments in other "emerging markets" may also affect the economies of
Latin American countries and the entire region.
    
 
   
     Brazil has experienced significant downturns in its economy and financial
markets, with large decreases in financial asset prices and, since it devalued
its currency on January 13, 1999, dramatic decreases in the value of its
currency. One of the lessees representing 4.88% of the aircraft by appraised
value at January 18, 1999 operates three of the aircraft in Brazil. Continued
weakness in the value of the Brazilian real, as well as general deterioration in
the Brazilian economy, will mean that lessees may be unable to generate
sufficient revenues in Brazilian currency to pay the dollar-denominated rental
payments under the lease. More importantly, financial and economic problems in
Brazil could spread throughout Latin America and other "emerging" economies,
having a similar effect on many of our other lessees.
    
 
   
     Similarly, the Chilean economy has recently suffered adverse effects as a
result of the continuing economic difficulties in Asia and lower market prices
for certain of Chile's exported commodities, especially copper, woodpulp and
fishmeal. In the past, Asia has accounted for a significant portion of Chile's
exports.
    
                                       23
<PAGE>   25
 
   
Copper is Chile's principal export product. Copper prices have declined
dramatically over the past year, primarily as a result of Asia's economic
difficulties as discussed above. Such economic developments, especially if they
continue or worsen, could lead to lower levels of economic activity in Chile
which could, in turn, adversely affect the operations of AerCo Group's Chilean
lessee.
    
 
   
     Several Latin American countries have experienced increased political
stability, overall increased economic growth, lower inflation rates and
revitalized economies in the past several years. However, there can be no
assurance that such progress can be maintained or that further progress will be
made.
    
 
   
     EUROPEAN CONCENTRATION.  At January 18, 1999, 49.52% of the aircraft by
appraised value at January 18, 1999 were leased by operators based in Europe
with 35.96% based in "developed" European markets, principally the United
Kingdom and Spain, and 13.56% based in "emerging" European markets, principally
Turkey. One lessee, (Spanair) leased 11.35% of the aircraft by appraised value
at January 18, 1999. As of January 18, 1999, 46.72% of the aircraft by appraised
value at January 18, 1999 were leased to charter operators in the tourism
industry, principally in the United Kingdom (17.43% of the aircraft by appraised
value at January 18, 1999).
    
 
   
     The commercial aviation industry in Europe is very sensitive to general
economic conditions. Since air travel is largely discretionary, the industry
tends to suffer severe financial difficulties during slow economic periods. As a
result, the financial prospects for European lessees will depend on the level of
economic activity in Europe and in the specific countries where they operate. A
recession or other worsening of economic conditions in any European country may
adversely affect the European lessees' ability to meet their financial and other
obligations. For example, the Russian economy has recently experienced severe
difficulties, including significant devaluation of the rouble against the
dollar. The downturn in Russia's economy may undermine business confidence and
reduce demand for air travel in other emerging market countries. Competitive
pressures from continuing deregulation of the airline industry by the EU may
also adversely affect European lessees' operations and their ability to meet
their obligations under the leases.
    
 
   
     NORTH AMERICAN CONCENTRATION.  At January 18, 1999, 8.58% of the aircraft
by appraised value at January 18, 1999 were leased by operators in North
America. As in Europe, the commercial aviation industry in North America is
highly sensitive to general economic conditions. Since airline travel is largely
discretionary, the industry has suffered severe financial difficulties during
economic downturns. Over the last several years, nearly half of the major North
American passenger airlines have filed Chapter 11 bankruptcy proceedings and
several major U.S. airlines have ceased operations.
    
 
   
INABILITY TO TERMINATE LEASES OR REPOSSESS AIRCRAFT
    
 
   
     We have the right to terminate the lease and repossess the aircraft if
there is an event of default under a lease. However, we may be unable to
terminate the lease or may incur substantial costs if we terminate a lease and
repossess the aircraft. If we cannot repossess the aircraft, it will not be
available for re-lease or sale. In that event, or if we incur substantial costs
in terminating a lease and repossessing an aircraft, we may be unable to make
payments on the Notes.
    
 
   
     Our ability to terminate the lease and repossess the aircraft may be
limited by the following factors:
    
 
   
     -  a lessee contesting AerCo Group's right to terminate the lease and
       repossess the aircraft;
    
 
   
     -  our inability to export, deregister and redeploy the aircraft;
    
 
   
     -  legal restrictions on our ability to terminate or repossess the
       aircraft; and
    
 
   
     -  the appointment of a trustee in bankruptcy or similar officer in the
       case of a bankrupt or insolvent lessee.
    
 
   
     Even if we are able to terminate the lease and repossess the aircraft, we
may incur substantial costs, including:
    
 
   
     -  the direct costs associated with the termination of the lease or
       repossession of an aircraft, including legal costs;
    
                                       24
<PAGE>   26
 
   
     -  the cost of returning the aircraft to the appropriate jurisdiction;
    
 
   
     -  the payment of debts and taxes secured by liens on the aircraft that
       were not paid by the lessee;
    
 
   
     -  the costs of retrieving or recreating aircraft records that are required
       for reregistering the aircraft;
    
 
   
     -  costs to obtain a certificate of airworthiness for the aircraft; and
    
 
   
     -  swap breakage costs incurred under our agreements with swap providers.
    
 
   
RISKS RELATING TO PAYMENTS ON THE NOTES
    
 
   
     ACTUAL EXPERIENCE MAY NOT MATCH OUR ASSUMPTIONS
    
 
   
     We have determined the expected final payment dates for the Notes based on
assumptions about our future cash flows and interest and operating costs and
possible future economic conditions. The purpose of these assumptions is to
illustrate the payment provisions of the Notes. Many of these assumptions relate
to future political, economic and market conditions (for example, interest
rates) that are outside our control and are difficult or impossible to predict.
Other assumptions relate to future events (for example, insurance recoveries and
maintenance payments) that depend on the actions of lessees or others with whom
we deal. For this reason, it is unlikely that our experience in the future will
be consistent with these assumptions. As a result, we may be unable to make
payments on the Notes at the times and in the amounts that the assumptions
indicate.
    
 
   
     You should refer to "Description of the Notes -- Assumptions" for more
details about the assumptions we have made.
    
 
   
     SUBORDINATION OF THE NOTES
    
 
   
     Our expenses and certain other payments which we must make rank senior to
the Notes and are payable out of our funds before any payments are made on the
Notes. Depending on the amount of these more senior payments, we may be unable
to make the required payments on the Notes.
    
 
   
     Your right to receive payments of interest, principal and any premium on
your Notes will rank junior to payments on more senior subclasses of Notes. If
an event of default occurs, then the holders of a class of Notes may not
exercise remedies under the indenture until all amounts we owe on more senior
classes of Notes and our other more senior obligations have been paid. In that
case, holders of the most senior class of Notes will control the exercise of
these remedies.
    
 
CAPITAL MARKETS RISKS
 
   
     NO PUBLIC MARKET FOR THE NOTES
    
 
   
     An active public market for the New Notes may not develop. We issued the
Old Notes to a limited number of institutional investors. There is currently no
market for New Notes. We intend to list the New Notes only on the Luxembourg
Stock Exchange. No one has an obligation to make a market in the New Notes. We
do not intend to seek approval for quotation through any automated quotation
system. If a market for the New Notes does develop, future trading prices will
depend upon many factors, including general economic conditions and our
financial condition, performance and prospects.
    
 
   
     WE MAY BE UNABLE TO REFINANCE THE SUBCLASS A-1 NOTES
    
 
   
     The Subclass A-1 Notes may reach their expected final payment date before
we have received sufficient cash flows to repay them. In that case, we plan to
refinance the Subclass A-1 Notes by issuing refinancing notes. The refinancing
notes will rank equally with the other Class A Notes but the interest rate,
principal payment provisions and other terms will be different. Our ability to
refinance the Subclass A-1 Notes will depend on many factors outside our
control. These factors include general conditions in the capital markets and the
markets' perception of the commercial aviation industry, the aircraft leasing
business generally or our own company. If we cannot refinance the Subclass A-1
Notes on acceptable terms, we may not be able to
    
 
                                       25
<PAGE>   27
 
   
repay the Subclass A-1 Notes by their expected final payment date. This may also
delay repayment of principal on the Class B and Class C Notes and may result in
lower market prices for the Notes.
    
 
   
     In the future, we may issue additional notes and refinancing notes that may
also require refinancing like the Subclass A-1 Notes. These notes would present
the same refinancing risk that we describe above.
    
 
   
BANKRUPTCY RISKS
    
 
   
     We have taken steps to structure our company, our acquisition of ALPS 94-1
and our acquisition of our other aircraft owning subsidiaries from AerFi to
ensure that our assets are not consolidated with AerFi's assets or otherwise
become available to AerFi's creditors in any bankruptcy or insolvency proceeding
involving AerFi. ALPS 94-1 took similar steps for the same purpose when it
originally acquired its aircraft from AerFi in 1994 and 1995.
    
 
   
     If AerFi becomes bankrupt or insolvent, there is a legal risk that a court
or other authority could decide that these steps were not effective to insulate
our assets from AerFi's assets or that AerFi's transfer of aircraft to us was
improper. As a result, the aircraft and our other assets could become available
to repay both AerFi's creditors and our creditors, including you. We could also
lose all of our rights in the aircraft and our other assets. In either case, it
may be impossible to repay amounts outstanding under the Notes.
    
 
   
INCOME TAX RISKS
    
 
   
     The tax consequences of the purchase of the Notes will depend to some
extent upon your individual circumstances. Ownership of the Notes entails
certain risks regarding the application of the tax laws of Ireland, the United
States, Jersey and the jurisdictions in which the members of AerCo Group and the
lessees are organized, reside or operate.
    
 
     We have received an opinion of Mourant du Feu & Jeune, our Jersey tax
counsel, that neither we nor ALPS 94-1 will be subject to Jersey income tax and
that payments on the Notes will not be subject to Jersey withholding tax.
 
     In the opinion of KPMG, our Irish tax advisors, neither ALPS 94-1 nor AerCo
USA is subject to Irish income tax on its non-Irish source income. This opinion
is based on the assumption that the companies operate their businesses in
accordance with the operational provisions set forth in their organizational
documents (which were included for this purpose). ALPS 94-1 and AerCo USA do not
intend to be (and have taken steps designed to ensure that they will not be)
treated as doing business in Ireland. Therefore, ALPS 94-1 and AerCo USA do not
expect to be subject to Irish income tax. However, there can be no assurance
that ALPS 94-1 or AerCo USA will not be subject to Irish tax on some or all of
their income.
 
     In the opinion of McCann FitzGerald, our Irish counsel, payments on the
Notes (excluding any Definitive Notes) will not be subject to Irish withholding
tax. This opinion is based on certain assumptions. See "Tax Considerations --
Irish Tax Considerations -- Irish Income and Withholding Taxes on Payments on
the Notes".
 
     You should be aware, however, that these opinions represent only the best
judgment of counsel and are not binding on the applicable taxing authorities or
the courts. The opinions depend upon certain factual assumptions and the
existence of different facts could lead to circumstances not anticipated by
counsel.
 
     We will not make any additional payments to Noteholders for any withholding
or deduction that is required under applicable law on payments on the Notes. If
we are required to make a withholding or deduction, we will use reasonable
efforts to avoid the application of withholding taxes. If we cannot avoid the
withholding taxes, we may redeem the Notes. If withholding taxes are imposed on
the Notes and we do not redeem them, we will reduce the amount of interest that
you will receive by the amount of the withholding taxes.
 
                                       26
<PAGE>   28
 
   
     AerCo, ALPS 94-1, AerCo Ireland and AerCo Ireland II do not expect to have
any material U.S. federal income tax liability. However, this conclusion may
depend, in part, on:
    
 
   
     -  the nature of such companies' income and operations, and
    
 
   
     -  in the case of AerCo, AerCo Ireland and AerCo Ireland II, qualification
       for the benefits of the income tax treaty between the United States and
       Ireland (the "TREATY").
    
 
   
     AerFi and certain of its affiliates, with the support of the Irish
authorities, have sought a ruling from the United States authorities under the
Treaty, to the effect that certain subsidiaries and affiliates of AerFi Group
would be deemed to meet certain requirements necessary for eligibility for
Treaty benefits. AerFi is in the process of updating the ruling request to take
account of certain restructuring transactions undertaken in 1998. However, there
can be no assurance that a ruling will be obtained, that AerCo, AerCo Ireland or
AerCo Ireland II would be covered by the ruling or that such companies or ALPS
94-1 would not be subject to United States federal income tax on some or all of
their income with the result that the cash flow available for payments on the
Notes would be reduced.
    
 
   
     There is also a risk that the servicer's future management of the Aircraft
may expose members of the AerCo Group to tax liabilities in other jurisdictions
outside Ireland.
    
 
LOSS OF CERTAIN IRISH TAX BENEFITS
 
   
     AerCo, AerCo Ireland and AerCo Ireland II are entitled to certain corporate
tax benefits for Shannon, Ireland certified companies including a preferential
corporate taxation rate of 10% through December 2005. If AerFi Group were
liquidated or were to cease to hold its 5% shareholding in AerCo, or if AerFi
Group were to reduce or relocate its operations for any reason such that it
failed to maintain, among other things, certain employment levels at Shannon,
Ireland, or if AerFi Administrative Services or AerFi Cash Manager II were to
resign or be removed as administrative agent or cash manager, respectively, of
AerCo Group, then AerCo, AerCo Ireland, and AerCo Ireland II may become subject
to Irish corporate taxation at general Irish statutory rates (currently 28%).
    
 
   
     Such a loss of tax benefits could lead to a downgrade in the then-current
ratings on the Notes and could affect our ability to make the required payment
on the Notes. See also "Irish Tax Considerations -- Irish Income and Withholding
Taxes on Payments on the Notes". AerFi Group has agreed to use its best efforts
to maintain the Shannon corporate tax benefits for the benefit of AerCo Group.
    
 
   
     When the Irish preferential 10% tax rate ends on December 31, 2005, AerCo
and the other Irish tax-resident members of the AerCo Group may become subject
to Irish corporate tax on their net trading income at a 12.5% rate as announced
by the Minister for Finance of Ireland on December 3, 1997 and as confirmed by
him on December 2, 1998. According to the announcement, non-trading income will
be taxed at 25%. We can give no assurance that the announced rates will be
adopted as law in Ireland or that, if adopted, the rates will not be changed
afterwards.
    
 
                                       27
<PAGE>   29
 
                               THE EXCHANGE OFFER
 
TERMS OF THE EXCHANGE OFFER; PERIOD FOR TENDERING OLD NOTES
 
   
     Upon the terms and the conditions set forth in this prospectus and in the
accompanying letter of transmittal (which together constitute the exchange
offer), AerCo will accept for exchange Old Notes which are properly tendered on
or before the expiration date and not withdrawn as permitted below. The term
"expiration date" means 3:00 p.m., New York City time, on           1999. If
AerCo, however, in its sole discretion, extends the period for which the
exchange offer is open, the expiration date means the latest time and date to
which the exchange offer is extended.
    
 
   
     This prospectus, together with the letter of transmittal, is first being
sent on or about the date set forth on the cover page of this prospectus to all
holders of Old Notes known to AerCo. AerCo's obligations to accept Old Notes for
exchange is subject to certain conditions as listed under "Conditions to the
Exchange Offer" below.
    
 
   
     AerCo expressly reserves the right to extend the time during which the
exchange offer is open, and delay acceptance of any Old Notes, by giving oral or
written notice of any extension to the exchange agent and the holders. During
any extension, all Old Notes previously tendered will remain subject to the
exchange offer and may be accepted for exchange by AerCo. AerCo has agreed under
the Registration Rights Agreement, to keep the exchange offer open for at least
20 business days after the date notice of the exchange offer is mailed to the
holders of the Old Notes (or longer if required by applicable law).
    
 
   
     AerCo expressly reserves the right to amend or terminate the exchange
offer, and not to accept for exchange any Old Notes not theretofore accepted for
exchange, upon the occurrence of any of the conditions of the exchange offer
specified below under "Conditions to the Exchange Offer." AerCo will give oral
or written notice of any extension, amendment, non-acceptance or termination to
the holders of the Old Notes as promptly as practicable, such notice in the case
of any extension to be issued by means of a press release or other public
announcement no later than 9:00 a.m., New York City time, on the next business
day after the previously scheduled expiration date.
    
 
   
     Holders of Old Notes do not have any appraisal or dissenters' rights under
the indenture in connection with the exchange offer. AerCo intends to conduct
the exchange offer in accordance with the applicable requirements of the
Exchange Act and the rules and regulations of the Commission.
    
 
PROCEDURES FOR TENDERING OLD NOTES
 
   
     The tender to AerCo of Old Notes by a holder as described below and the
acceptance by AerCo will constitute a binding agreement between the tendering
holder and AerCo upon the terms and subject to the conditions set forth in this
prospectus and in the accompanying letter of transmittal.
    
 
   
     Except as set forth below, a holder (including any participant in the DTC
system whose name appears on a security position listing as a holder of such Old
Notes) who wishes to tender Old Notes for exchange under the exchange offer must
transmit to the exchange agent on or before the expiration date either:
    
 
   
     -  a properly completed and executed letter of transmittal or a facsimile
        of the letter, including all other documents required by the letter of
        transmittal, to the exchange agent at the address listed below under "--
        Exchange Agent"; or
    
 
   
     -  a computer-generated message, transmitted through the DTC's ATOP system
        and received by the exchange agent and forming part of a book-entry
        confirmation, in which the holder agrees to be bound by the terms of the
        letter of transmittal.
    
 
   
To ensure timely delivery of the Old Notes:
    
 
   
     -  the exchange agent must receive a confirmation of a book-entry transfer
        of the Old Notes into its account at The DTC before the expiration date;
        or
    
 
   
     -  the holder of Old Notes must comply with the guaranteed delivery
       procedures described below.
    
 
                                       28
<PAGE>   30
 
   
     THE METHOD OF DELIVERY OF OLD NOTES, LETTERS OF TRANSMITTAL AND ALL OTHER
REQUIRED DOCUMENTS IS AT YOUR ELECTION AND RISK OF THE HOLDERS. IF THE DELIVERY
IS BY MAIL, WE RECOMMEND THAT YOU USE REGISTERED MAIL, WITH RETURN RECEIPT
REQUESTED. IN ALL CASES, YOU SHOULD ALLOW SUFFICIENT TIME TO ASSURE TIMELY
DELIVERY. NO LETTERS OF TRANSMITTAL SHOULD BE SENT TO AERCO.
    
 
   
     Signatures on a letter of transmittal or a notice of withdrawal must be
guaranteed unless the Old Notes surrendered for exchange pursuant thereto are
tendered by a holder of the Old Notes who has not completed the box entitled
"Special Issuance Instructions" on the letter of transmittal or for the account
of a firm which is a member of a registered national securities exchange or a
member of the National Association of Securities Dealers, Inc. or a commercial
bank or trust company having an office or correspondent in the United States. If
signatures on a letter of transmittal or a notice of withdrawal are required to
be guaranteed, the guarantees must be by a firm which is a member of a
registered national securities exchange or a member of the National Association
of Securities Dealers, Inc. or by a commercial bank or trust company having an
office or correspondent in the United States.
    
 
   
     All questions as to the validity, form, eligibility (including time of
receipt) and acceptance of Old Notes tendered for exchange will be determined by
AerCo in its sole discretion, and will be final and binding. AerCo reserves the
absolute right to reject any tenders of any Old Notes not properly tendered or
to reject any Old Notes acceptance of which might, in the judgment of AerCo or
its counsel, be unlawful. AerCo also reserves the absolute right in its sole
discretion to waive any defects or irregularities or conditions of the exchange
offer as to any Old Notes either before or after the expiration date (including
the right to waive the ineligibility of any holder who seeks to tender Old Notes
in the exchange offer). The interpretation of the terms and conditions of the
exchange offer or any Old Notes either before or after the expiration date
(including the letter of transmittal and the instructions thereto) by AerCo
shall be final and binding on all parties. Unless waived, any defects or
irregularities in connection with the tenders of Old Notes for exchange must be
cured within a reasonable period of time as AerCo shall determine. Neither
AerCo, the exchange agent nor any other person shall be under any duty to give
notification of any defect or irregularity with respect to any tender of Old
Notes for exchange, nor shall any of them incur any liability for failure to
give such notification.
    
 
   
     If the letter of transmittal is signed by a person or persons other than
the holders of Old Notes, the letter of transmittal must be accompanied by
appropriate powers of attorney, in either case signed exactly as the name or
names of the holders that appear on the security position listing maintained by
DTC.
    
 
   
     If the letter of transmittal or powers of attorney are signed by trustees,
executors, administrators, guardians, attorneys-in-fact, officers of
corporations or others acting in a fiduciary or representative capacity, such
person should so indicate when signing and, unless waived by AerCo, proper
evidence satisfactory to AerCo of its authority to so act must be submitted.
    
 
   
     By tendering (including transmission of an agent's message), each holder of
Old Notes will represent to AerCo that;
    
 
   
     -  the New Notes acquired under the exchange offer are being obtained in
        the ordinary course of business of the person receiving the New Notes,
        whether or not the person is a holder,
    
 
   
     -  neither the holder of Old Notes nor any such other person has an
        arrangement or understanding with any person to participate in the
        distribution of the New Notes,
    
 
   
     -  if the holder is not a broker-dealer, or is a broker-dealer but will not
        receive New Notes for its own account in exchange for Old Notes, neither
        the holder nor any such other person is engaged in or intends to
        participate in the distribution of the New Notes, and
    
 
   
     -  neither the holder nor any other person is an "affiliate" of AerCo,
        within the meaning of Rule 405 under the Securities Act.
    
 
   
     By tendering (including transmission of an agent's message) each holder of
Old Notes that is a broker-dealer (whether or not it is also an affiliate) that
will receive New Notes for its own account pursuant to the exchange offer will
represent that Old Notes to be exchanged were acquired by it as a result of
    
                                       29
<PAGE>   31
 
   
market-making activities or other trading activities and will acknowledge that
it will deliver a prospectus meeting the requirements of the Securities Act in
connection with any resale of the New Notes. However, by so acknowledging and by
delivering a prospectus, a broker-dealer will not be deemed to admit that it is
an "underwriter" within the meaning of the Securities Act.
    
 
ACCEPTANCE OF OLD NOTES FOR EXCHANGE; DELIVERY OF NEW NOTES
 
   
     Upon satisfaction or waiver of all of the conditions to the exchange offer,
AerCo will accept, promptly after the expiration date, all Old Notes properly
tendered and will issue the New Notes promptly after acceptance of the Old
Notes. For purposes of the exchange offer, AerCo shall be deemed to have
accepted properly tendered Old Notes for exchange when, as and if AerCo has
given oral or written notice thereof to the exchange agent.
    
 
   
     In all cases, issuance of New Notes for Old Notes that are accepted for
exchange under the exchange offer will be made only after timely receipt by the
exchange agent of all the documents listed under "Procedures for Tendering Old
Notes". If any tendered Old Notes are not accepted for any reason set forth in
the terms and conditions of the exchange offer, such unaccepted or non-exchanged
Old Notes will be credited to an account maintained with the DTC as promptly as
practicable after the expiration or termination of the exchange offer.
    
 
INTEREST ON THE NEW NOTES
 
   
     Holders of Old Notes that are accepted for exchange will not receive
accrued interest on the Old Notes at the time of exchange. However, each New
Note will bear interest from the most recent date to which interest has been
paid on the Old Notes or New Notes, or if no interest has been paid on the Old
Notes or New Notes.
    
 
BOOK-ENTRY TRANSFER
 
   
     The exchange agent will make a request to establish an account for the Old
Notes at the DTC for purposes of the exchange offer promptly after the date of
this prospectus. All deliveries of Old Notes must be made by book-entry transfer
to the account maintained by the exchange agent at the DTC. Any financial
institution that is a participant in the DTC's systems may make book-entry
delivery of Old Notes by causing the DTC to transfer such Old Notes into the
exchange agent's account in accordance with the DTC's Automated Tender Offer
Program ("ATOP") procedures for transfer. Holders of Old Notes who are unable to
deliver confirmation of the book-entry tender of their Old Notes into the
exchange agent's account at the DTC or all other documents required by the
letter of transmittal to the exchange agent on or prior to the expiration date,
must tender their Old Notes according to the guaranteed delivery procedures
described below.
    
 
GUARANTEED DELIVERY PROCEDURES
 
   
     If a holder of the Old Notes desires to tender them and time will not
permit the holder's required documents to reach the exchange agent on or before
the expiration date, or the procedure for book-entry transfer cannot be
completed on a timely basis, a tender may be effected if:
    
 
   
     -  the tender is made through a firm which is a member of a registered
        national securities exchange or a member of the National Association of
        Security Dealers, Inc. or a commercial bank or trust company having an
        office or correspondent in the United States,
    
 
   
     -  on or before the expiration date, the exchange agent receives from such
       firm, commercial bank or trust company either a properly completed and
       duly executed letter of transmittal (or a facsimile thereof) or a
       properly transmitted agent's message and notice of guaranteed delivery,
       substantially in the form provided by AerCo (by telegram, telex,
       facsimile transmission, mail or hand delivery), listing:
    
 
   
       -- the name and address of the holder of Old Notes,
    
 
                                       30
<PAGE>   32
 
   
       -- the amount of Old Notes tendered,
    
 
   
       -- stating that the tender is being made thereby and guaranteeing that
          within five New York Stock Exchange trading days after the date of
          execution of the notice of guaranteed delivery, a book-entry
          confirmation and all other documents required by the letter of
          transmittal will be deposited by such firm, commercial bank or trust
          company with the exchange agent, and
    
 
   
     -  a book-entry confirmation and all other documents required by the letter
        of transmittal, are received by the exchange agent within five New York
        Stock Exchange trading days after the date of execution of the notice of
        guaranteed delivery.
    
 
WITHDRAWAL RIGHTS
 
   
     Tenders of Old Notes may be withdrawn at any time before the expiration
date.
    
 
   
     For a withdrawal to be effective, either a written notice of withdrawal
must be received by the exchange agent at one of the addresses set forth below
under "Exchange Agent" or the appropriate procedures of the DTC's ATOP system
must be complied with. Any notice of withdrawal must specify the name of the
person that tendered the Old Notes to be withdrawn and identify the Old Notes to
be withdrawn. Any notice of withdrawal must specify the name and number of the
account at the DTC to be credited with the withdrawn Old Notes and otherwise
comply with the procedures of the DTC. All questions as to the validity, form
and eligibility of such notices will be determined by AerCo, whose determination
shall be final and binding on all parties. Any Old Notes so withdrawn will be
deemed not to have been validly tendered for exchange for purposes of the
exchange offer. Any Old Notes which have been tendered for exchange but which
are not exchanged for any reason will be credited to an account maintained with
the DTC for the Old Notes as soon as practicable after withdrawal, rejection of
tender or termination of the exchange offer. Properly withdrawn Old Notes may be
retendered by following one of the procedures described under "Procedures for
Tendering Old Notes" above at any time on or before the expiration date.
    
 
   
CONDITIONS TO THE EXCHANGE OFFER
    
 
   
     Notwithstanding any other provisions of the exchange offer, AerCo shall not
be required to accept for exchange, or to issue New Notes in exchange for, any
Old Notes and may terminate or amend the exchange offer, if at any time before
the acceptance of such Old Notes for exchange or the exchange of the New Notes
for such Old Notes, such acceptance or issuance would violate applicable law or
any interpretation of the staff of the Commission.
    
 
     The foregoing condition is for the sole benefit of AerCo and may be
asserted by AerCo regardless of the circumstances giving rise to such condition
or may be waived by AerCo in whole or in part at any time and from time to time
in its sole discretion. The failure by AerCo at any time to exercise the
foregoing rights shall not be deemed a waiver of any such right and each such
right shall be deemed an ongoing right which may be asserted at any time and
from time to time.
 
   
     In addition, AerCo will not accept for exchange any Old Notes tendered, and
no New Notes will be issued in exchange for any such Old Notes, if at such time
any stop order shall be threatened or in effect with respect to either the
registration statement of which this prospectus constitutes a part or the
qualification of the Indenture under the Trust Indenture Act of 1939, as
amended.
    
 
                                       31
<PAGE>   33
 
EXCHANGE AGENT
 
   
     Bankers Trust Company has been appointed as the exchange agent for the
exchange offer. All executed letters of transmittal should be delivered to the
exchange agent at one of the addresses set forth below. Questions and requests
for assistance, requests for additional copies of this prospectus or of the
letter of transmittal and requests for notices of guaranteed delivery should be
directed to the exchange agent, addressed as follows:
    
 
             Delivery To: Bankers Trust Company, as Exchange Agent
 
                     If by Mail, Hand or Overnight Courier:
 
                             Bankers Trust Company
                               Four Albany Street
                                 Mail Stop 5101
                            New York, New York 10006
                      Attention: Structured Finance Group
 
                                       or
 
                                If by Facsimile:
 
                                 (212) 250-6439
 
                             Confirm by Telephone:
 
                        (212) 250-5601 or (212) 250-6137
 
   
     DELIVERY OF THE LETTER OF TRANSMITTAL TO AN ADDRESS OTHER THAN THE ADDRESS
SET FORTH ABOVE OR TRANSMISSION VIA FACSIMILE OTHER THAN TO A NUMBER SET FORTH
ABOVE WILL NOT BE A VALID DELIVERY.
    
 
FEES AND EXPENSES
 
   
     The principal solicitation is being made by mail; however, additional
solicitation may be made by telegraph, telephone or in person by the exchange
agent, on behalf of AerCo. No additional compensation will be paid to the
exchange agent who engages in soliciting tenders. AerCo will not pay brokers,
dealers, or others soliciting acceptances of the exchange offer. AerCo however,
will pay the exchange agent reasonable and customary fees for its services and
will reimburse it for its reasonable out-of-pocket expenses in connection with
the exchange offer.
    
 
   
     The cash expenses to be incurred in connection with the exchange offer will
be paid by AerCo and are estimated in the aggregate to be $500,000.
    
 
TRANSFER TAXES
 
   
     Holders who tender their Old Notes for exchange will not be obligated to
pay any transfer taxes. If, however, a transfer tax is imposed for any reason
other than the transfer of Old Notes to AerCo or its order pursuant to the
exchange offer, the amount of any such transfer taxes (whether imposed on the
holder or any other person) will be payable by the tendering holder. If
satisfactory evidence of payment of such taxes or exemption therefrom is not
submitted, the amount of such transfer taxes will be billed directly to such
tendering holder.
    
 
                                       32
<PAGE>   34
 
CONSEQUENCES OF FAILURE TO EXCHANGE
 
   
     Holders of Old Notes who do not exchange their Old Notes for New Notes
under the exchange offer will continue to be subject to the restrictions on
transfer of the Old Notes. In general, the Old Notes may not be offered or sold,
unless registered under the Securities Act, except pursuant to an exemption
from, or in a transaction not subject to, the Securities Act and applicable
state securities laws. AerCo does not intend to register the Old Notes under the
Securities Act.
    
 
   
     To comply with the securities laws of certain jurisdictions, it may be
necessary to qualify for sale or register the New Notes prior to offering or
selling such New Notes. We have agreed to register or qualify the New Notes held
by broker-dealers for offer or sale under the securities or blue sky laws of
such jurisdictions as any such holder reasonably requests in writing. Unless we
are requested, we do not intend to take any action to register or qualify the
New Notes for resale in any such jurisdictions. In addition, the tender of Old
Notes pursuant to the exchange offer will reduce the principal amount of the Old
Notes outstanding, which may have an adverse effect upon, and increase the
volatility of, the market price of the Old Notes due to a reduction in
liquidity.
    
 
                                       33
<PAGE>   35
 
                                  THE PARTIES
 
AERCO
 
   
     AerCo is a special purpose limited liability company formed on June 4, 1998
under the laws of Jersey. AerCo's limited purposes include:
    
 
   
     - acquiring, financing, re-financing, leasing, re-leasing, maintaining and
       modifying the aircraft and any additional aircraft directly or by owning
       the share capital of ALPS 94-1 and the other aircraft-owning
       subsidiaries;
    
 
   
     - selling aircraft or interests in aircraft including in certain
       tax-related transactions;
    
 
   
     - entering into certain hedging contracts as described under "Management's
       Discussion and Analysis of Financial Condition and Results of Operations
       -- Financial Resources and Liquidity -- Interest Rate Management"; and
    
 
   
     - establishing and providing loans or guarantees to its subsidiaries and
       any entities that may be established in the future for additional
       aircraft acquisitions.
    
 
   
     AerCo's direct wholly owned subsidiaries are ALPS 94-1, AerCo Ireland,
AerCo Ireland II and AerCo USA. AerCo operates its business principally through
its direct and indirect subsidiaries but may also engage directly in the
acquisition and leasing of aircraft. AerCo's own business therefore principally
consists of, and its own revenues are derived principally from, making loans to
its subsidiaries.
    
 
   
     AerCo has an authorized share capital of 10,000 ordinary shares, $1 par
value per share, 20 of which are issued and outstanding. Nineteen shares of the
issued capital stock are held by the Juris Limited and Lively Limited, each a
Jersey limited liability company (together, the "NOMINEES"), for the benefit of
the AerCo Holding Trust, a charitable trust established under the laws of Jersey
(the "CHARITABLE TRUST"). One share of the issued capital stock is held by AerFi
Group. The 5% shareholding of AerFi is intended to assist AerCo and certain of
its subsidiaries in obtaining certain corporate tax benefits for Shannon,
Ireland certified companies. See "Risk Factors -- Loss of Certain Irish Tax
Benefits."
    
 
   
     AerCo is not involved in any legal or arbitration proceedings relating to
claims or amounts which are material to the issue of the Notes. AerCo is not
aware of any pending or threatened proceedings.
    
 
   
     AerCo's registered and principal office is located at 22 Grenville Street,
St. Helier, Jersey, JE4 8PX, Channel Islands and its telephone number is
011-44-1534-609000. Until September 9, 1998, AerCo's auditors were Arthur
Andersen, Chartered Accountants, Forum House, Grenville Street, St. Helier,
Jersey JE2 4UF, Channel Islands. On September 9, 1998, AerCo appointed KPMG,
Chartered Accountants, 5 George's Dock, IFSC, Dublin 1, Ireland, as new
independent auditors for the fiscal year ending June 30, 1998 and subsequent
periods.
    
 
   
AERFI
    
   
    
 
   
     AerFi Group plc ("AERFI") holds all of AerCo's Subclass D-1 and Subclass
E-1 Notes. AerFi's wholly owned subsidiaries provide administrative, accounting,
liability management, financial consulting and cash management services to AerCo
Group.
    
 
   
     At December 31, 1998, AerFi employed 30 people and had 67 commercial
aircraft in its portfolio, of which 63 were on lease to 30 lessees in 18
countries.
    
 
   
     On November 20, 1998, AerFi, formerly known as GPA, completed a
restructuring which significantly changed its operations. As part of the
restructuring, AerFi sold a portion of its aircraft portfolio to GE Capital
Aviation Services Limited ("GECAS"), including one aircraft which was previously
owned by ALPS 94-1, transferred its interest in Airplanes Group to GECAS and
agreed to no longer use the GPA name.
    
 
                                       34
<PAGE>   36
 
   
BABCOCK & BROWN
    
 
   
     Babcock & Brown, provides various services to AerCo Group under the
Servicing Agreement. Babcock & Brown is a part of a global financial advisory
group specializing in arranging and managing asset-based financial transactions,
with particular expertise in the international aviation industry (the "BABCOCK &
BROWN GROUP"). The Babcock & Brown Group is one of the largest independent
arrangers of finance and operating leases for aircraft, providing financial
advisory or management services in approximately 775 transactions to more than
140 clients in the international aviation industry. The Babcock & Brown Group
arranges and advises on single jurisdiction and cross-border lease and project
finance transactions and asset-based debt finance. The Babcock & Brown Group
also offers special products and general advisory services to its clients and
recently established an aircraft trading and investment operation.
    
 
   
     Babcock & Brown is headquartered in Dublin, Ireland and at March 31, 1998
had seven employees. The Babcock & Brown Group is headquartered in San
Francisco, and at March 31, 1998 had a total of 275 employees in 14 office
locations in Brisbane, Dublin, Connecticut, Hong Kong, Johannesburg, London,
Madrid, Melbourne, Milan, New York, Paris, San Francisco, Seattle and Sydney.
    
 
     BUSINESS
 
     Management and Marketing Services
 
   
     The Babcock & Brown Group's management services include:
    
 
   
     -  arranging the acquisition and delivery of aircraft;
    
 
   
     -  collecting rentals, security deposits and maintenance reserves;
    
 
   
     -  monitoring insurance and arranging for additional insurance coverage;
    
 
   
     -  arranging for aircraft valuations;
    
 
   
     -  aircraft registration and de-registration;
    
 
   
     -  supervising technical and contract compliance;
    
 
   
     -  re-leasing or accepting aircraft at the end of the lease term;
    
 
   
     -  re-delivery under a new lease and sale of the aircraft to a subsequent
        buyer; and
    
 
   
     -  lease enforcement and repossession services if a lessee fails to meet
        the contractual terms of a lease.
    
 
   
     The Babcock & Brown Group also manages non-aircraft assets including,
locomotives, rail equipment, satellites, oil and gas properties and real estate.
    
 
   
     The Babcock & Brown Group began providing management services to its
investor clients for aircraft on operating lease in 1990, and has developed a
team of experienced professionals and support systems to handle the broad range
of tasks involved in the management of high value assets. At March 31, 1998, the
Babcock & Brown Group managed a portfolio of 63 aircraft (including 14 widebody
and 49 narrowbody aircraft) on behalf of its clients.
    
 
   
     Operating Lease Arrangement.  The Babcock & Brown Group's lease arrangement
services include acquiring and managing aircraft on operating lease for
identified investors, primarily in Japan. The Babcock & Brown Group also
represents owners of aircraft in the sale of aircraft from their portfolios. The
investors in these transactions are located primarily in Japan and North
America. Since 1990, the Babcock & Brown Group has completed aircraft operating
lease transactions with more than 40 airlines and operating lessees, including
transactions involving 130 aircraft.
    
 
   
     Between December 1994 and March 1998, the Babcock & Brown Group arranged
the re-lease of 37 aircraft owned by its clients.
    
 
                                       35
<PAGE>   37
 
     Aircraft Trading and Investment
 
   
     The Babcock & Brown Group's recently established aircraft trading and
investment operation making short-term investments in aircraft on operating
lease. Since 1994, the Babcock & Brown Group has invested in approximately 20
aircraft, 13 of which have been sold within six months.
    
 
     Single Jurisdiction and Cross-Border Leasing and Project Finance Services
 
   
     The Babcock & Brown Group is a leading advisor in domestic and cross-border
tax-based leasing. Arranging and advising on leases of aircraft, rail cars and
satellites and financing for projects such as power generation, natural
resources and manufacturing. Typical transactions range from $25 million to over
$1 billion.
    
 
     Asset-Based Debt Finance
 
   
     The Babcock & Brown Group's asset-based debt finance business arranges debt
financing in various markets, primarily privately placed financings involving
aerospace and other lenders worldwide. Many of the debt placements are part of
leveraged leases, in which the Babcock & Brown Group acts as both the debt and
equity arranger. Other transactions involve privately placed secured and
unsecured debt for the financing or refinancing of assets or to raise funds for
its clients' operations. The Babcock & Brown Group also structures public debt
offerings, which are arranged by other investment banking firms.
    
 
     Special Products and Advisory Services
 
   
     The Babcock & Brown Group advises clients on complex tax and accounting
issues, which frequently involve the tax laws and accounting rules of various
jurisdictions. In addition, the Babcock & Brown Group offers general advisory
services to airlines, aircraft owners and other users of capital equipment as
well as to investors in aircraft and other capital equipment.
    
 
                                       36
<PAGE>   38
 
   
              THE REFINANCING OF ALPS 94-1 AND ACQUISITION OF THE
    
   
                          AERFI TRANSFERRED COMPANIES
    
 
   
     On July 15, 1998, AerCo purchased all of the outstanding capital stock of
ALPS 94-1 from the trustees of the ALPS 94-1 trust for a nominal amount. This
purchase price reflected the very limited economic entitlements of these
trustees as shareholders of ALPS 94-1.
    
 
   
     AerFi also purchased all of the outstanding capital stock of the AerFi
Transferred Companies from AerFi Group for a net purchase price equal to $0.3
million, calculated as follows:
    
 
   
     (1)  the aggregate initial appraised value of the 10 AerFi Transferred
          Aircraft ($213.2 million);
    
 
   
LESS THE SUM OF:
    
 
   
     (2)  the amount of cash security deposits held in respect of the 10 AerFi
          Transferred Aircraft at July 15, 1998 (approximately $2.8 million);
          and
    
 
   
     (3)  the amount of indebtedness of any transferring company to AerFi at
          July 15, 1998 (approximately $210.1 million).
    
 
   
     On July 15, 1998, AerCo loaned ALPS 94-1 a portion of the net cash proceeds
from the offering and the issuance of the Subclass D-1 and Subclass E-1 Notes to
AerFi for the purpose of immediately (1) redeeming or repaying all of ALPS
94-1's existing financial indebtedness and (2) paying fees and other expenses
payable by ALPS 94-1 in connection with the refinancing of ALPS 94-1 and the
offering.
    
 
   
     ALPS 94-1, GECAS, former servicer to ALPS 94-1 and AerFi Group, also
reached an agreement to terminate the existing ALPS 94-1 servicing agreement on
July 15, 1998 in exchange for a termination fee. ALPS 94-1 agreed, upon
termination of the ALPS 94-1 servicing agreement to, (1) waive all claims it may
have against GECAS, its affiliates and their representatives and (2) indemnify
GECAS, its affiliates and their representatives for any losses they may have
incurred in connection with the termination of the ALPS 94-1 servicing
agreement, the offering and the issuance of the AerCo Notes and the refinancing
of ALPS 94-1.
    
 
   
     On July 15, 1998, AerCo loaned each AerFi Transferred Company a portion of
the net proceeds of the offering to immediately repay its indebtedness to AerFi
Group. All letters of credit, guarantees or similar arrangements securing
obligations of any lessee of the AerFi Transferred Aircraft were transferred to,
renewed, amended or reissued in the name of, an AerFi Transferred Company.
    
 
   
     The trustees of the ALPS 94-1 trust made no representations, warranties or
indemnities in selling their shares to AerCo. AerFi Group made customary
representations and warranties, in the share purchase agreement for the
acquisition including representations relating to solvency, undisclosed
contingent liabilities and insurance. AerFi Group indemnified us for breaches of
their representations and warranties relating to the aircraft-owning companies
and aircraft which they sold to us. These representations and warranties survive
until July 15, 2001. Our potential recovery under them is limited to
approximately $185 million.
    
 
   
BANKRUPTCY CONSIDERATIONS
    
 
   
     We have taken steps in structuring the transactions described in this
prospectus to ensure that our assets and liabilities are not consolidated with
those of AerFi if AerFi becomes the subject of an application for relief under
applicable bankruptcy or insolvency laws. ALPS 94-1 took similar steps in
relation to its acquisition of the original ALPS 94-1 aircraft from AerFi in
1994 and 1995 for the same purpose. These steps include:
    
 
   
     -  the creation of AerCo and ALPS 94-1 as separate legal entities outside
        Ireland,
    
 
   
     -  the requirement that AerFi hold none of the issued equity or voting
        share capital of AerCo or ALPS 94-1 (other than the 5% of AerCo's
        Capital Stock held in order to assist us and certain of our subsidiaries
        in obtaining certain corporate tax benefits for Shannon, Ireland
        certified companies),
    
 
   
     -  the requirement that AerFi not control the composition of AerCo's Board
        of Directors, and
    
 
                                       37
<PAGE>   39
 
   
     -  the inclusion in various transaction documents of provisions requiring
        that our business and affairs and the business and affairs of our
        subsidiaries are at all times identifiable and separately managed from
        those of AerFi.
    
 
   
     McCann FitzGerald, our Irish counsel, concluded in an opinion delivered at
the time the Old Notes were issued that on the basis of certain assumptions and
subject to certain qualifications and reservations:
    
 
   
     -  in any examination of AerFi Group or any of its affiliates, an Irish
        examiner would not be able to contend successfully that an examiner
        should be appointed to any member of AerCo Group on the grounds that,
        after the Closing Date, such member is a "related company" of AerFi
        Group or such affiliate; and
    
 
   
     -  an Irish court should not treat AerFi or any of its affiliates, on the
        one hand, and any member of AerCo Group, on the other, as a single
        entity in any winding up of AerFi Group or such affiliate and order
    
 
   
       -- the pooling of any of the assets and liabilities of any member of
          AerCo Group with those of AerFi; or
    
 
   
       -- the contribution of any of the assets of any member of AerCo Group to
          the repayment of the debts of AerFi.
    
 
   
     In the context of liquidation, examination or receivership of AerFi Group
or any of its affiliates, a liquidator, receiver, examiner, creditor or
shareholder of AerFi Group or any of its affiliates could take the position that
the disposal of the shares of any of the AerFi Transferred Companies pursuant to
the share purchase agreements constituted improper transfers or fraudulent
conveyances and could therefore seek the invalidation of such sales and the
return to AerFi of such shares or proceeds of subsequent sales of the shares.
With respect to these issues, we have received an opinion of Irish counsel,
McCann FitzGerald, concluding that, on the basis of certain assumptions,
including as to the adequacy of consideration and subject to certain
qualifications and reservations set forth in such opinion, an Irish court would
not regard the completed sale of the shares of the AerFi Transferred Companies
pursuant to the share purchase agreements as improper transfers or fraudulent
conveyances and order any such assets to be returned to AerFi on such grounds.
    
 
   
     AerFi and AerCo have taken appropriate steps to transfer the shares of the
AerFi Transferred Companies to AerCo. A liquidator, receiver, examiner, creditor
or shareholder of AerFi Group, any such seller or any relevant affiliate,
however, could seek to recharacterize the transfer of the shares of the AerFi
Transferred Companies as a pledge of collateral as security for a financing of
AerFi. A successful recharacterization of the share transfers as a pledge or
granting of security could:
    
 
   
     -  in certain circumstances result in the complete forfeiture of the rights
        of AerCo Group in the Transferred Aircraft or the shares of the
        Transferred Companies, possibly resulting in AerCo Group being
        considered a general unsecured creditor of AerFi Group or the applicable
        seller with a claim in an amount equal to the purchase price paid for
        such Aircraft or such shares, or
    
 
   
     -  in other circumstances result in AerCo Group being a secured creditor of
        AerFi Group or the applicable seller or of the relevant affiliate. AerCo
        Group, however, has received an opinion of McCann FitzGerald concluding
        that, notwithstanding the uncertainty resulting from the lack of
        substantive Irish case law on the issue of recharacterization, and
        subject to the qualifications and reservations, including as to
        difference of treatment of the sales for accounting purposes, and based
        on the assumptions set forth in the opinion. The assumptions to the
        opinion include, in addition to the assumption as to the adquacy of
        consideration, the assumption that both AerFi and AerCo Group will, so
        far as permissible in accordance with current accounting standards, act
        in a manner consistent with the shares having been sold, the sales of
        the shares of the Transferred Companies once completed would not be
        recharacterized as a pledge of such assets to secure a loan from AerCo
        Group to AerFi.
    
 
   
     We can give you no assurance, however, that the circumstances and
assumptions upon which counsel have based their opinion will not change, that a
court of competent jurisdiction would not decide differently
    
                                       38
<PAGE>   40
 
   
from the views expressed in such counsel's opinions or that such opinions will
prove to be correct. Such opinions represent only the best judgment of counsel
and are not binding on the courts. In particular, such opinions depend on
certain factual assumptions and the occurrence of different facts could lead a
court to reach a different conclusion.
    
 
   
     AerCo Group will also take appropriate steps to structure the acquisition
of additional aircraft or shares in additional aircraft-owning subsidiaries of
any sellers, which may include AerFi, to minimize the risk of recharacterization
described above. The nature and magnitude of such risk will depend largely on
the financial condition of the relevant seller and the bankruptcy and insolvency
laws of the jurisdiction or jurisdictions applicable to it and its assets. There
can be no assurance that a liquidator, receiver, examiner, creditor or
shareholder of the relevant seller could not seek to recharacterize the
acquisition of additional aircraft as described above or could not otherwise
seek to challenge the rights of AerCo Group in the additional aircraft or the
shares of the companies owning them.
    
 
                                       39
<PAGE>   41
 
   
                  THE AIRCRAFT, RELATED LEASES AND COLLATERAL
    
 
APPRAISERS' REPORTS
 
   
     AerCo Group recently obtained appraisals of the aircraft as of January 18,
1999. On the basis of these appraisals, the average appraised base value of the
34 aircraft (following the sale of one F100 aircraft on January 8, 1999) was
approximately $896 million compared with $938 million at March 1, 1998, the date
of the initial base value appraisals. The appraised value is equal to the
average of the opinions of the appraisers as to the base value of each aircraft
without taking into account the value of the leases, maintenance reserves or
security deposits.
    
 
   
     The decrease in the appraisals since March 1, 1998 was approximately $22.6
million more than the expected decrease assumed by the aircraft depreciation
schedules that form part of the terms of the Notes. The average decline in the
appraised base value of the fleet of 4.5% is based on an effective 11 months
depreciation, from March 1, 1998 to January 18, 1999. The decline of 2.1%
assumed in this prospectus is calculated on the basis of a six month period from
July 15, 1998, using the assumed depreciation rate of 4.1% per annum described
in "Description of the Notes -- Principal Amortization".
    
 
   
     The valuation of our fleet included in the offering memorandum for the Old
Notes was not depreciated for the period between the date of the initial base
values (March 1, 1998) and the closing date of the AerCo Transaction (July 15,
1998). This factor accounts for a substantial portion of the difference between
the appraisals as of January 18, 1999 and the value decline assumption in the
offering memorandum. In addition, the appraisals were impacted by the decreases
in the values of Fokker 100s which are greater than was assumed, primarily as a
result of Fokker exiting the industry. Greater than assumed decreases were also
experienced with respect to the values of A320-200s and B737-300/400/500s due
primarily to continued price discounting by Boeing and Airbus and with respect
to AerCo's A300B4-200 due to increased over supply of this aircraft type.
    
 
   
     The appraisers have provided appraisals of the value of each of the
aircraft at normal utilization rates in an open, unrestricted and stable market
as of January 18, 1999, adjusted to account for the reported maintenance
standard of the aircraft. The appraisals were not based on physical inspection
of the aircraft. The appraisals explain the methodology used to determine the
values for the aircraft. Based on the appraisals, the aggregate base values
calculated by each of the three appraisers for the aircraft are $913.3 million
in the case of BK Associates, Inc., $919.5 million in the case of Aircraft
Information Services, Inc. and $855.0 million in the case of Airclaims Limited.
You should not rely on the appraised value as a measure of the realizable value
of any aircraft.
    
 
PORTFOLIO INFORMATION
 
   
     THE AIRCRAFT
    
 
   
     All of the aircraft hold or are capable of holding a noise certificate
issued under Chapter 3 of Volume 1, Part II of Annex 16 of the Chicago
Convention or have been shown to comply with the Stage 3 noise levels set out in
Section 36.5 of Appendix C of Part 36 of the United States Federal Aviation
Regulations.
    
 
                                       40
<PAGE>   42
 
   
     The following table lists the aircraft by type of aircraft both by
reference to the number of aircraft at January 18, 1999 and to the percentage of
appraised value at January 18, 1999.
    
 
   
<TABLE>
<CAPTION>
                                                            NUMBER OF                ENGINE   % OF AIRCRAFT BY
MANUFACTURER                             TYPE OF AIRCRAFT   AIRCRAFT    BODY TYPE    STAGE    APPRAISED VALUE
- ------------                             ----------------   ---------   ----------   ------   ----------------
<S>                                      <C>                <C>         <C>          <C>      <C>
Boeing (65.47%)........................  B737-400                 7     Narrowbody     3            19.65%
                                         B757-200                 3     Narrowbody     3            13.93
                                         B767-300ER               2     Widebody       3            13.42
                                         B737-300                 5     Narrowbody     3            12.68
                                         B747-200B                1     Widebody       3             3.57
                                         B737-500                 1     Narrowbody     3             2.21
Airbus (17.53%)........................  A320-200                 5     Narrowbody     3            16.23
                                         A300-B4-200              1     Widebody       3             1.30
McDonnell Douglas Corporation
  (10.51%).............................  MD83                     3     Narrowbody     3             7.06
                                         DC8-71F                  2     Narrowbody     3             3.45
Fokker N.V. (6.49%)....................  F100                     4     Narrowbody     3             6.49
                                                              -----                                ------
                                                                 34                                100.00%
                                                              =====                                ======
</TABLE>
    
 
                                       41
<PAGE>   43
 
   
     The following table lists the aircraft by lessee at January 18, 1999 both
by reference to the number of aircraft and to the percentage of the appraised
value at January 18, 1999.
    
 
   
<TABLE>
<CAPTION>
                                                                NUMBER OF    % OF AIRCRAFT BY
LESSEE(1)                                                       AIRCRAFT     APPRAISED VALUE
- ---------                                                       ---------    ----------------
<S>                                                             <C>          <C>
Spanair S.A. ("SPANAIR")....................................          3            11.35%
Airtours International Airways Limited ("AIRTOURS").........          2             6.68
Linea Aerea Nacional Chile S.A. ("LAN CHILE")...............          1             6.68
Asiana Airlines, Inc. ("ASIANA")............................          2             5.92
Turk Hava Yollari A.O. ("THY")..............................          2             5.73
Transportes Aereos Regionais S.A. ("TAM")...................          3             4.88
Philippine Airlines, Inc. ("PAL")...........................          2             4.78
Air 2000 Limited ("AIR 2000")...............................          1             4.71
China Southwest Airlines ("CHINA SOUTHWEST")................          1             4.65
Aerovias Nacionales de Colombia S.A. Avianca ("AVIANCA")....          1             4.58
Tower Air, Inc. ("TOWER")...................................          1             3.57
Monarch Airlines Limited ("MONARCH")........................          1             3.45
Canadian Airlines International Limited ("CANADIAN")........          1             3.33
Aer Lingus Limited ("AER LINGUS")...........................          1             2.80
Compagnie Nationale Air France ("AIR FRANCE")...............          1             2.77
China Aviation Supplies Corporation and Civil Aviation
  Administration of China -- Yunnan Administration
  ("YUNNAN")................................................          1             2.69
Pegasus Hava Tasimaciligi A.S. ("PEGASUS")..................          1             2.62
Malev RT ("MALEV")..........................................          1             2.61
Gunes Ekspres Havacilik A.S. ("SUN EXPRESS")................          1             2.60
British Midland Airways Limited ("BRITISH MIDLAND").........          1             2.58
Far Eastern Transport Corporation ("FEAT")..................          1             2.45
Air Pacific Limited ("AIR PACIFIC").........................          1             2.21
Aircraft International Leasing Limited......................          1             1.77
BAX Global, Inc. ("BAX GLOBAL").............................          1             1.68
Portugalia-Companhia Portuguesa de Transportes Aereos, S.A.
  ("PORTUGALIA")............................................          1             1.62
Indian Airlines Limited ("INDIAN")..........................          1             1.30
                                                                  -----           ------
                                                                     34           100.00%
                                                                  =====           ======
</TABLE>
    
 
- ---------------
 
   
(1) Total number of lessees = 26
    
 
                                       42
<PAGE>   44
 
   
     The following table lists the aircraft by country at January 18, 1999
according to the number of aircraft and to the percentage of the appraised value
at January 18, 1999.
    
 
   
<TABLE>
<CAPTION>
                                                                                  % OF
                                                                NUMBER OF      AIRCRAFT BY
COUNTRY(1)                                                      AIRCRAFT     APPRAISED VALUE
- ----------                                                      ---------    ---------------
<S>                                                             <C>          <C>
United Kingdom..............................................          5           17.43%
Spain.......................................................          3           11.35
Turkey......................................................          4           10.96
Chile.......................................................          2            8.45
China.......................................................          2            7.34
South Korea.................................................          2            5.92
United States...............................................          2            5.25
Brazil......................................................          3            4.88
Philippines.................................................          2            4.78
Colombia....................................................          1            4.58
Canada......................................................          1            3.33
Ireland.....................................................          1            2.80
France......................................................          1            2.77
Hungary.....................................................          1            2.61
Taiwan......................................................          1            2.45
Fiji........................................................          1            2.21
Portugal....................................................          1            1.62
India.......................................................          1            1.30
                                                                  -----          ------
                                                                     34          100.00%
                                                                  =====          ======
</TABLE>
    
 
- ---------------
 
(1) Total number of countries = 18
 
   
     The following table lists the aircraft by region at January 18, 1999
according to the number of aircraft and to the percentage of the appraised value
at January 18, 1999.
    
 
   
<TABLE>
<CAPTION>
                                                                                  % OF
                                                                NUMBER OF      AIRCRAFT BY
REGION                                                          AIRCRAFT     APPRAISED VALUE
- ------                                                          ---------    ---------------
<S>                                                             <C>          <C>
Developed Markets
  Europe....................................................         11           35.96%
  North America.............................................          3            8.57
Emerging
  Asia......................................................          8           21.79
  Latin America.............................................          6           17.90
  Europe and the Middle East................................          5           13.56
Others......................................................          1            2.21
                                                                  -----          ------
                                                                     34          100.00%
                                                                  =====          ======
</TABLE>
    
 
                                       43
<PAGE>   45
 
   
     The following table lists the aircraft by year of aircraft manufacture or
conversion to freighter at January 18, 1999 calculated by reference to the
number of aircraft and to the percentage of the appraised value at January 18,
1999.
    
 
   
<TABLE>
<CAPTION>
                                                                                  % OF
                                                                NUMBER OF      AIRCRAFT BY
YEAR OF MANUFACTURE                                             AIRCRAFT     APPRAISED VALUE
- -------------------                                             ---------    ---------------
<S>                                                             <C>          <C>
1981........................................................          1            3.57%
1983........................................................          1            1.30
1988........................................................          1            2.58
1989........................................................          4            9.54
1990........................................................          3            8.04
1991........................................................         10           30.45
1992........................................................         11           33.04
1993........................................................          3           11.48
                                                                  -----          ------
                                                                     34          100.00%
                                                                  =====          ======
</TABLE>
    
 
   
     The following table lists the exposure of the aircraft by seat category at
January 18, 1999 calculated by reference to the number of aircraft and to the
percentage of the appraised value at January 18, 1999.
    
 
   
<TABLE>
<CAPTION>
                                                                                         % OF
                                                                       NUMBER OF      AIRCRAFT BY
SEAT CATEGORY           AIRCRAFT TYPE                                  AIRCRAFT     APPRAISED VALUE
- -------------           -------------                                  ---------    ---------------
<S>                     <C>                                            <C>          <C>
91-120                  B737-500, F-100............................          5            8.70%
121-170                 A320-200, B737-300, B737-400, MD83.........         20           55.62
171-240                 B757-200...................................          3           13.93
241-350                 A300-B4-200, B767-300ER....................          3           14.72
351 and above           B747-200B..................................          1            3.57
Freighter               DC8-71F....................................          2            3.45
                                                                         -----          ------
                                                                            34          100.00%
                                                                         =====          ======
</TABLE>
    
 
                                       44
<PAGE>   46
 
AERCO PORTFOLIO ANALYSIS
   
<TABLE>
<CAPTION>
 
                                                                                                               DATE OF
                                                                         AIRCRAFT      ENGINE       SERIAL   MANUFACTURE/
REGION                     COUNTRY          LESSEE                         TYPE     CONFIGURATION   NUMBER    CONVERSION
- ------                     -------          ------                       --------   -------------   ------   ------------
 
<S>                        <C>              <C>                         <C>         <C>             <C>      <C>
Asia.....................  China            China Southwest             B757-200    RB211-535E4     26153       Aug-92
(Emerging)                 China            Yunnan                      B737-300    CFM56-3C1       26068       Jun-92
                           India            Indian Airlines             A300-B4-200 CF6-50C2          240       May-83
                           Philippines      PAL                         B737-300    CFM56-3B1       24465       Aug-89
                           Philippines      PAL                         B737-300    CFM56-3B1       24677       Mar-90
                           South Korea      Asiana Airlines             B737-400    CFM56-3C1       25764       Jul-92
                           South Korea      Asiana Airlines             B737-400    CFM56-3C1       25765       Jul-92
                           Taiwan           FEAT                        MD83        JT8D-219        49952       Dec-91
Europe...................  France           Air France                  A320-200    CFM56-5A1          85       Feb-90
(Developed)                Ireland          Aer Lingus                  B737-400    CFM56-3C1       24685       May-90
                           Portugal         Portugalia                  F100        TAY650-15       11342       Aug-91
                           Spain            Spanair                     B767-300ER  PW4060          24999       Feb-91
                           Spain            Spanair                     MD83        JT8D-219        49627       Apr-89
                           Spain            Spanair                     MD83        JT8D-219        49790       Oct-89
                           United Kingdom   Air 2000                    B757-200    RB211-535E4     26158       Feb-93
                           United Kingdom   Airtours                    A320-200    CFM56-5A3         299       Apr-92
                           United Kingdom   Airtours                    A320-200    V2500-A1          362       Nov-92
                           United Kingdom   British Midland             B737-400    CFM56-3C1       23868       Oct-88
                           United Kingdom   Monarch                     A320-200    CFM56-5A3         391       Feb-93
Europe...................  Hungary          Malev                       B737-300    CFM56-3C1       24909       Apr-91
(Emerging)                 Turkey           Pegasus                     B737-400    CFM56-3C1       23979       Jan-89
                           Turkey           Sun Express                 B737-300    CFM56-3C1       24908       Mar-91
                           Turkey           THY                         B737-400    CFM56-3C1       24904       Feb-91
                           Turkey           THY                         B737-400    CFM56-3C1       26066       Jun-92
Latin America............  Brazil           TAM                         F100        TAY650-15       11341       Aug-91
(Emerging)                 Brazil           TAM                         F100        TAY650-15       11350       Apr-92
                           Brazil           TAM                         F100        TAY650-15       11351       Sep-91
                           Chile            Lan Chile                   B767-300ER  PW4060          24947       Mar-91
                           Chile            Aircraft International      DC8-71F     CFM56-2C1       46040       Mar-91
                                            Leasing Limited(1)
                           Columbia         Avianca                     B757-200    RB211-535E4     26152       Aug-92
North America............  Canada           Canadian                    A320-200    CFM56-5A1         403       Dec-93
(Developed)                United States    BAX Global                  DC8-71F     CFM56-2C1       46064       Mar-92
                           United States    Tower Air                   B747-200B   JT9D-7Q         22496       Oct-81
Other....................  Fiji             Air Pacific                 B737-500    CFM56-3C1       26067       Jun-92
 
<CAPTION>
                             APPRAISED
                             VALUE AT
                            JANUARY 18
REGION                         1999
- ------                     -------------
                           (U.S.$'000'S)
<S>                        <C>
Asia.....................      41,633
(Emerging)                     24,099
                               11,648
                               20,736
                               22,103
                               26,720
                               26,285
                               21,983
Europe...................      24,800
(Developed)                    25,091
                               14,496
                               60,437
                               20,493
                               20,780
                               42,170
                               29,537
                               30,347
                               23,132
                               30,937
Europe...................      23,366
(Emerging)                     23,466
                               23,308
                               24,912
                               26,467
Latin America............      14,160
(Emerging)                     15,096
                               14,431
                               59,841
                               15,858
                               41,012
North America............      29,791
(Developed)                    15,040
                               31,996
Other....................      19,785
                             --------
                              895,956
                             ========
</TABLE>
    
 
- ---------------
 
(1) Aircraft International Leasing Limited is an indirect 100% subsidiary of Lan
     Chile.
 
ACQUISITION OF ADDITIONAL AIRCRAFT
 
   
     AerCo Group may acquire additional commercial passenger or freight aircraft
from various sellers, including AerFi. Cash flows from any additional aircraft
and any additional leases will be available to satisfy AerCo's payment
obligations, on the Notes and any additional Notes. Any acquisition of
additional aircraft and issuance of additional Notes will be subject to certain
conditions under the Indenture. You should refer to "Description of the Notes --
Payment of Principal and Interest -- Indenture Covenants -- Limitation on
Indebtedness" and "-- Limitations on Aircraft Acquisitions" for additional
information on restrictions on the acquisition of additional aircraft.
    
 
   
THE LEASES
    
 
     GENERAL
 
   
     All leases are managed by Babcock & Brown under the servicing agreement.
    
 
                                       45
<PAGE>   47
 
   
     The following description relates only to the leases. Any additional leases
acquired in connection with the acquisition of additional aircraft and any
future leases entered into in connection with the re-lease of any aircraft may
differ from the description of the leases set forth below. However, any
additional leases or future leases will be required to comply with the operating
covenants contained in the indenture.
    
 
   
     The leases are all operating leases under which AerCo generally will retain
the benefit, and bear the risk, of the residual value of the aircraft at the end
of the lease. Under the leases, the lessees have agreed to lease the aircraft
for a fixed term. However, AerCo has granted purchase, extension or early
termination options purchase on certain aircraft to the lessee or an affiliate
of the lessee. Although the lease documentation is fairly standardized in many
respects, significant variations do exist as a result of lessee negotiation.
    
 
     LEASE PAYMENTS AND SECURITY
 
   
     Each lease requires the lessee to pay periodic rentals during the lease
term. Certain of the leases require the lessee to pay periodic amounts as
maintenance reserves or to provide maintenance letters of credit or guarantees.
    
 
   
     The lessees must make payments to the lessor without set-off or
counterclaim, and must gross-up payments under the lease where payments are
subject to certain withholding and other taxes. However, in certain cases, such
amount will be limited to the amount that would have been payable if the lease
had never been transferred from AerFi to AerCo. The leases also contain
indemnification of the lessor for certain taxation liabilities (including value
added tax and stamp duties, but generally excluding income tax or its equivalent
imposed on the lessor) and, in all but one case, taxation of indemnity payments.
The lessees must also pay default interest on any overdue amounts.
    
 
   
     Under the leases, the lessees are liable through various operational
indemnities for operating expenses accrued or payable during the term of the
lease. These expenses include maintenance, operating, overhaul, airport and
navigation charges, certain taxes, licenses, consents and approvals, aircraft
registration and hull all risks and public liability insurance premiums. The
lessees are obliged to remove liens on the aircraft other than liens permitted
under the leases.
    
 
   
     Under all of the leases, the lessee provided security deposits for its
obligations. In the case of 17 leases (52.61% of the leases by appraised value
at January 18, 1999), the lessee provided cash security deposits. In the case of
10 leases (24.71% of the leases by appraised value at January 18, 1999), the
lessee provided letters of credit. In the case of the other seven leases (22.68%
of the leases by appraised value at January 18, 1999), the lessee provided a
combination of cash deposits and letters of credit.
    
 
   
     Under 10 of the leases, the lessor received general guarantees from third
parties for the lessee's payment obligations (and in some cases performance
obligations) under the lease. In the case of seven of the leases, these
guarantees were issued by the lessee's shareholder or affiliate. In the case of
the leases to China Southwest and Yunnan, a guarantee for each lessee's payment
obligations was issued by the Bank of China (subject in each case to a
stipulated maximum amount). In the case of one lease, letters of comfort were
issued to the lessor by two of the lessee's shareholders.
    
 
   
\     RENTALS
    
 
   
     Rentals under 32 of the leases (concerning 92.66% of the aircraft by
appraised value at January 18, 1999) are payable monthly in advance, and rentals
under the remaining two leases (7.34% of the aircraft by appraised value at
January 18, 1999) are payable quarterly in advance.
    
 
   
     Rental payments on the leases are calculated either on a fixed or floating
rate basis. The rental payment of a lease, which is calculated on a floating
rate basis generally, has a minimum fixed amount (the rental floor) that is
payable even if LIBOR is 0% per annum plus an amount which varies with LIBOR or
varies itself. The rental floor varies from lease to lease.
    
 
                                       46
<PAGE>   48
 
     OPERATION OF THE AIRCRAFT
 
   
     The lessees must operate the aircraft in compliance with all applicable
laws and regulations. The aircraft generally must remain in the possession of
the lessees, and the lessor must approve any subleases of the aircraft. The
lessees may enter into charter or "wet lease" arrangements with the aircraft
(that is a lease with crew and services provided by the lessee) under most of
the leases, as long as lessees do not relinquish possession or operational
control of the aircraft. Under certain leases, the lessees may enter into
subleases to specified operators without the lessor's consent, provided certain
conditions are met. Two of the lessees, BAX Global and Aer Lingus currently
sublease their aircraft to Air Transport International and Futura.
    
 
   
     The lessees may subject the engines and other equipment or components to
removal or replacement and to pooling arrangements (temporary borrowing of
equipment), with permitted entities (including manufactures, suppliers, other
airlines or aircraft operators) without the lessor's consent but subject to
conditions and criteria in the relevant lease. The lessees may deliver
possession of the aircraft, engines and other equipment or components to the
manufacturer for testing or similar purposes, or to a third party for service,
maintenance, repair or other work required or permitted under the lease.
    
 
     MAINTENANCE AND MAINTENANCE RESERVES
 
   
     The leases contain detailed provisions specifying maintenance standards and
aircraft redelivery conditions. Lessees must provide monthly maintenance
reserves under approximately half of the leases. Under the balance of the
leases, if the aircraft or specified items at redelivery do not meet the
specified standards, the lessee or the lessor may be required to make certain
adjustment payments to each other. During the term of each lease, the lessee
must ensure that the aircraft is maintained in accordance with an agreed
maintenance program designed to ensure that the aircraft meets applicable
airworthiness and other regulatory requirements. Generally, the lessee performs
the agreed maintenance program. If the lessee has paid maintenance reserves, the
payments are used to reimburse the lessee for significant maintenance charges,
including major airframe and engine overhauls.
    
 
   
     If the leases do not provide for maintenance reserves payments, the lessor
must rely on the lessee's credit and its ability to perform scheduled
maintenance throughout the lease term, return the aircraft in the condition
required by the lease, or make any payments required upon termination of the
lease.
    
 
   
     LESSEES' OPTIONS
    
 
   
     Purchase options for six of the aircraft representing 23.57% of the
aircraft by appraised value at January 18, 1999, have been granted to lessees
under lease or a purchase option agreement.
    
 
   
     All of the purchase options are currently exercisable. The duration of some
purchase options depends on whether the lessee exercises a separate option to
extend the lease. There are no purchase options which are exercisable at prices
below the assumed Note Target Prices.
    
 
   
     Five of the leases (16.03% of the aircraft by appraised value at January
18, 1999) include options for the lessee to extend the lease term and one of the
leases (3.33% of the aircraft by appraised value at January 18, 1999) includes
an option for the lessor to extend the lease term. The rent payable during the
extension period varies from lease to lease. Four of the leases (8.12% of the
aircraft by appraised value at January 18, 1999) contain provisions allowing
early termination of the lease.
    
 
   
INDEMNIFICATION AND INSURANCE OF THE AIRCRAFT
    
 
     GENERAL
 
   
     The lessees will bear responsibility (through an operational indemnity) and
carry insurance for any liabilities arising out of the operation of the
aircraft, including any liabilities for death or injury to persons and damage to
property that ordinarily would attach to the operator of the aircraft. In
addition, the lessees are required to carry additional insurance that are
customary in the air transportation industry. Babcock & Brown will monitor the
lessee's compliance with the insurance provisions of the leases. AerCo will also
have its own
    
 
                                       47
<PAGE>   49
 
   
contingent liability coverage. This will cover a liability that is in excess of
the coverage provided by a lessee's policy and where a lessee's policy lapses.
AerCo's contingent third party liability insurance will cover all of the
aircraft and its contingent hull and hull war risks insurance covers certain of
the aircraft. The amount of the contingent liability policies may not be the
same as required under the lease. The amount of third party contingent liability
insurance is subject to certain limitations imposed by the air transportation
insurance industry.
    
 
   
     If any of the existing insurance policies are canceled or terminated and in
the case of the re-lease of an aircraft, AerCo, or Babcock & Brown with
approval, may engage insurance experts, to advise and recommend the appropriate
amount of insurance coverage AerCo should procure.
    
 
   
     All insurance certificates contain a breach of warranty endorsement so that
the additional insured parties remain protected even if the lessee violates any
of the terms, conditions or warranties of the insurance policies, provided that
the additional insured party has not caused, contributed to or knowingly
condoned the breach.
    
 
     LIABILITY INSURANCE
 
   
     The lessees are required to have third party liability insurance for a
combined single limit in minimum amounts ranging between $350 million and $850
million for each aircraft. In general, liability coverage on each aircraft
includes third party legal liability, property damage legal liability, passenger
legal liability, baggage legal liability, cargo legal liability, mail and
aviation general third party (including products) legal liability.
    
 
   
     In some jurisdictions, liabilities for risks that the lessees insure may
attach to AerCo Group as owner of the aircraft regardless of whether AerCo is in
any way responsible for the loss for which liability is asserted. In addition,
claimants may assert claims against AerCo Group on the basis of alleged
responsibility for a loss, even if the claim is not sustained. Under the leases,
the lessees are obligated to indemnify the Lessor against claims, including the
costs of defending against claims by third parties against them for liabilities
while the aircraft are owned by AerCo Group and under lease to the lessees.
    
 
   
     The indemnified losses include both operating costs relating to the actual
operation of the aircraft as well as losses to persons and property resulting
from the operation of the aircraft. The latter types of losses are generally
covered by the lessee's liability insurances.
    
 
     AIRCRAFT PROPERTY INSURANCE
 
   
     The lessees must carry other types of insurance that are customary in the
air transportation industry, including all risks aircraft hull and hull war
risks insurance (in each case at a value stipulated in the relevant lease,
subject to adjustment) and aircraft spares insurance (on a replacement cost
basis), in each case subject to customary deductibles. In addition to the
stipulated lease value coverage obtained by the lessees, AerCo Group purchases
declining "total loss only" coverage with respect to certain aircraft. As of
January 18, 1999, in no case was the sum of the stipulated loss value and the
additional coverage for the aircraft in place for all risks aircraft hull and
hull war risks insurances less than 107% of the appraised value at January 18,
1999 of any aircraft, and on average the sum of such coverages in place for each
aircraft was approximately 129% of the appraised value at January 18, 1999 of
any aircraft. In many cases, the lessor can increase the insured value above the
stipulated lease value consistent with industry practice. The lessee pays any
increased premium. Permitted deductibles range from $250,000 to $1,000,000;
however, the deductible generally applies only in the case of a partial loss. In
the case of a total loss of an aircraft, no deductible would be applied against
the insurance proceeds received.
    
 
   
     The leases include provisions defining an event of loss or a casualty
occurrence such that where a total loss of the airframe occurs, with or without
loss of the engines installed on the airframe, the agreed value is payable by
the lessee. This payment is generally funded with insurance proceeds. However,
the air transportation insurance industry practice is to treat only a loss of
greater than 75% of the value of the aircraft, including the engines, as a total
loss. Where insurance proceeds do cover a total loss, most leases require the
    
 
                                       48
<PAGE>   50
 
   
lessor to pay to the lessee the balance of the insurance proceeds received under
the hull all risks or war risks policy after deduction of all amounts payable by
the lessee to the lessor under the lease.
    
 
   
     POLITICAL RISK REPOSSESSION INSURANCE
    
 
   
     Under certain leases, the lessor may arrange separate political risk
repossession insurance for its own benefit, covering (a) confiscation,
nationalization and requisition of title of any aircraft by the government of
the country of registry and denegation and deprivation of legal title and
rights, and (b) the failure of the authorities in that country to allow
de-registration and export of the aircraft, subject to the conditions of the
policies. Only 9.29% of the leases by appraised value of the aircraft concerned
at January 18, 1999 require the lessee to reimburse the lessor for any political
risk repossession insurance premiums.
    
 
THE LESSEES
 
   
     As of December 31, 1998, there were 26 lessees in 18 countries.
    
 
     PAYMENT HISTORY
 
   
     Weakly capitalized airlines are more likely than well capitalized airlines
to seek operating leases. Therefore, many of the lessees are in a relatively
weak financial position and several of them have faced and continue to face
severe economic difficulties.
    
 
   
     As of December 31, 1998, amounts outstanding for more than 30 days for
rental payments, maintenance reserves and other amounts due under the leases
(net of amounts of agreed deferrals or other restructurings, default interest
and certain cash in transit) equalled $5.92 million for 5 lessees who had a
total of 6 aircraft on lease.
    
 
   
     PAL, the lessee of two B737-300 aircraft representing 4.78% of the
portfolio by appraised value at January 18, 1999, has recently suffered severe
financial difficulties. On June 19, 1998, PAL filed a petition for Approval of a
Rehabilitation Plan with the Philippine SEC and subsequently the Philippine SEC
appointed an Interim Receiver. PAL was instructed by the Philippine SEC to
submit a Rehabilitation Plan within thirty days. Following a number of
applications for extension of this time limit, PAL filed a Rehabilitation Plan
with the Philippine SEC on December 7, 1998 for approval.
    
 
   
     It is unclear whether PAL will receive support for its proposed
rehabilitation plan from its creditors or whether it will be approved by the
Philippine SEC.
    
 
   
     At December 31, 1998, $3.31 million (of which $3.15 million was in arrears
for more than 30 days) was outstanding from PAL. Babcock & Brown is in
negotiations with PAL regarding repayment of its arrearages. There can be no
assurance, however, that PAL will ultimately repay its arrearages or be able to
pay future lease rentals. AerCo Group may encounter delays or difficulties in
recovering possession of the aircraft (which are currently operated within the
Philippines) or terminating such leases. If the aircraft are recovered, the
technical costs required to ensure the aircraft are in suitable condition for
re-leasing may be significant.
    
 
   
     As of December 31, 1998, another Asian lessee (representing 4.65% of the
portfolio by appraised value at January 18, 1999) owed $2.40 million in rent.
    
 
   
     As of December 31, 1998, a North American lessee (representing 3.57% of the
portfolio by appraised value at January 18, 1999) owed $0.33 million in rent.
    
 
   
     ALPS 94-1 has responded, and AerCo Group expects to respond, to the needs
of lessees in financial difficulty including, restructuring the applicable
leases or agreeing lease deferrals. The restructurings will typically involve
the rescheduling of rental payments for a specified period. In addition, certain
restructurings may involve the voluntary early termination of a lease, the
replacement of aircraft with less expensive aircraft and the arrangement of
sub-leases from the lessee to another aircraft operator. In certain cases, it
may be necessary to repossess aircraft from defaulting lessees and re-lease the
aircraft to other lessees. The early termination of leases may lead AerCo to
incur swap breakage costs under its agreements with swap providers which could
be substantial. You should refer to "Management's Discussion and Analysis of
Financial
    
                                       49
<PAGE>   51
 
   
Condition and Results of Operations -- Interest Rate Management." For additional
information on SWAP breakage costs.
    
 
   
     Since 1995, ALPS 94-1 has entered into deferral and other restructuring
transactions with two of the lessees and one former lessee involving a total of
three aircraft. These restructurings are described below.
    
 
   
     The Airbus A320-200 aircraft on lease to Airtours was, until November 1995,
leased to a U.K. charter operator. During 1994 and 1995, this lessee incurred
substantial losses. In July 1995 when approximately $0.70 million was due under
the lease, ALPS 94-1 agreed with the lessee and its parent company to terminate
the lease in November 1995. The lessee agreed to a termination fee of $500,000,
payable from the security deposit held by ALPS 94-1. In December 1995, the
parties entered into a restructuring agreement, which provided for the payment
of a L200,000 fee (payable in monthly installments through October 1997) to
settle all of ALPS 94-1's outstanding claims under the first restructuring
agreement. All installments have been paid under a bank letter of credit.
    
 
   
     Upon termination of this lease, the A320-200 aircraft was immediately
released to Airtours as part of a larger aircraft swap transaction, under which
Airtours terminated its lease of the MD83 aircraft owned by ALPS 94-1 and
entered into a seven-year lease for the A320-200 aircraft. ALPS 94-1 shortly
thereafter re-leased the MD83 aircraft to FEAT for three years. Although the
transfer of the two aircraft was achieved without either aircraft being
off-lease for any significant period, ALPS 94-1 incurred maintenance and other
expenses of approximately $0.20 million and $0.50 million in connection with the
redelivery of the A320-200 aircraft and the MD83 aircraft. Lost cash flow
attributable to the restructuring described above (including the subsequent
transfer of aircraft) during the year ended June 30, 1996 was $0.60 million. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations".
    
 
   
     In December 1996, Canadian, lessee of an A320-200 aircraft (approximately
3.33% of the aircraft by appraised value at January 18, 1999), approached ALPS
94-1, with proposals to reschedule its obligations as part of a general plan
designed to address its financial difficulties. After extensive negotiations,
ALPS 94-1 and Canadian entered into an agreement in May 1997 providing for the
deferral of operating lease rentals from December 1996 to February 1997. The
deferred payments have all been repaid together with interest. In addition,
Canadian has extended its lease for a further 61 months. The restructuring
agreement resulted in a loss of cash flow to ALPS 94-1 of approximately $0.90
million during the year ended June 30, 1997.
    
 
   
     In early 1996, a Latin American airline which operates a Boeing B757-200
aircraft (approximately 4.59% of the aircraft by appraised value at January 18,
1999), experienced significant periodic cash shortages as a result of a seasonal
drop in revenues. In April 1996, ALPS 94-1 agreed to the deferral of
approximately $0.90 million in rental and maintenance payments for January and
February 1996 to August 1996. The amounts deferred, together with default
interest and a deferral fee, were subsequently paid. In addition, in December
1997, this lessee prepaid 12 months' rental payments under the relevant lease.
As of December 31, 1998, however, $0.01 million was outstanding from this
lessee.
    
 
   
     Certain lessees have experienced periodic difficulties in meeting their
maintenance obligations under the leases. Such difficulties are caused by the
failure of the lessee to have in place a well established maintenance program,
adverse climate and other environmental conditions in the locations where the
aircraft are operated or financial and labor difficulties experienced by the
relevant lessee.
    
 
     DOWNTIME
 
   
     As of December 31, 1998, none of the aircraft were off-lease. There can be
no assurance that ALPS 94-1 and AerFi's experience will be indicative of AerCo
Group's and Babcock & Brown's ability to keep the aircraft and any additional
aircraft on-lease in the future. AerCo Group and Babcock & Brown may be unable
to re-lease aircraft upon the expiration of leases as a result of a
deterioration in industry conditions, decreased demand for specific types of
aircraft or other factors.
    
 
   
     The table below lists the leases that are scheduled to expire (through
2003), and also shows the number and type of aircraft that we must re-lease
through December 31, 2003. The table assumes that no lease will
    
 
                                       50
<PAGE>   52
 
   
terminate early and that there are no sales of aircraft or purchases of
additional aircraft. More aircraft may need to be re-leased if aircraft become
available through early lease terminations.
    
 
   
          AERCO GROUP LEASE PLACEMENT REQUIREMENT AT JANUARY 18, 1999
    
 
   
<TABLE>
<CAPTION>
                                                                  TO DECEMBER 31,
                                                     -----------------------------------------
                  AIRCRAFT TYPE                      1999     2000     2001     2002     2003
                  -------------                      -----    -----    -----    -----    -----
<S>                                                  <C>      <C>      <C>      <C>      <C>
A300.............................................       --       --        1       --       --
A320.............................................        1        1       --        1        1
B737.............................................        5        2        3        2       --
B747.............................................       --       --       --       --       --
B757.............................................       --       --       --        1        1
B767.............................................       --        1        1       --       --
DC8..............................................       --       --       --       --        2
F100.............................................       --       --       --        1       --
MD83.............................................       --       --       --        1       --
</TABLE>
    
 
   
     DESCRIPTION OF THE LESSEES
    
 
   
     The table below lists certain available information on the country of
domicile, government, airline or principal shareholders, fleet size and
composition and the first year of operation of each lessee. See "-- Portfolio
Information" above for additional tables detailing the exposure of the portfolio
(as a percentage of appraised value at January 18, 1999) to each lessee and the
countries and geographic regions in which the lessees are domiciled.
    
 
<TABLE>
<CAPTION>
                                                  BEGAN            GOVERNMENT/COMMERCIAL
LESSEE                    DOMICILE              OPERATION      AIRLINE/PRINCIPAL SHAREHOLDERS      FLEET(1)
- ------                    --------              ---------      ------------------------------      --------
<S>                       <C>                   <C>         <C>                                    <C>
 
Aer Lingus..............  Republic of Ireland     1936      Government of Ireland (100%)           6 B737-400
                                                                                                   8 B737-500
                                                                                                   5 A330-300
                                                                                                   1 L-1011-100
 
Airtours................  United Kingdom          1990      Airtours Plc (100%)                    10 A320-200
                                                                                                   4 B757-200
                                                                                                   4 B767-300ER
 
Air 2000................  United Kingdom          1986      First Choice Holidays Plc (100%)       4A320-200
                                                                                                   9 B757-200
</TABLE>
 
                                       51
<PAGE>   53
 
<TABLE>
<CAPTION>
                                                  BEGAN            GOVERNMENT/COMMERCIAL
LESSEE                    DOMICILE              OPERATION      AIRLINE/PRINCIPAL SHAREHOLDERS      FLEET(1)
- ------                    --------              ---------      ------------------------------      --------
<S>                       <C>                   <C>         <C>                                    <C>
Air France..............  France                  1933      Government of France (95%)             5 F100
                                                                                                   7 B737-300
                                                                                                   16 B737-500
                                                                                                   17 B737-200A
                                                                                                   4 B747-100
                                                                                                   2 B747-200B
                                                                                                   10 B747-200BC
                                                                                                   10 B747-200F
                                                                                                   2 B747-200SF
                                                                                                   2 B747-300C
                                                                                                   7 B747-400
                                                                                                   6 B747-400C
                                                                                                   5 B767-300ER
                                                                                                   2 A300-B4-200
                                                                                                   6 A310-200
                                                                                                   4 A310-300
                                                                                                   9 A319-100
                                                                                                   13 A320-100
                                                                                                   43 A320-200
                                                                                                   6 A321-100
                                                                                                   4 A321-200
                                                                                                   3 A340-200
                                                                                                   11 A340-300
                                                                                                   6 Concorde
                                                                                                   9 F.27-5000
 
Air Pacific.............  Fiji                    1951      Government of Fiji (72%)               1 B737-300
                                                            Qantas (17.5%)                         1 B737-500
                                                            Air New Zealand (2%)                   1 B747-200B
                                                                                                   1 B767-300ER
 
Asiana..................  Republic of Korea       1988      Kumho Group (62%)                      19 B737-400
                                                            Korean Development Bank (12.6%)        3 B737-500
                                                            Korean Long Team Credit Bank (6.4%)    12 B747-400
                                                            Swiss Bank Corp (19%)                  8 B767-300
                                                                                                   8 B767-300ER
                                                                                                   1 A321-100
 
Avianca.................  Colombia                1919      Private                                3 B727 200
                                                                                                   4 B757 200
                                                                                                   3 B767 200ER
                                                                                                   1 B767 300ER
                                                                                                   10 F50
                                                                                                   11 MD83
 
British Midland.........  United Kingdom          1938      BBW Partnership (60%)                  4 F100
                                                            SAS (40%)                              9 Saab340
                                                                                                   3 F70
                                                                                                   8 B737-300
                                                                                                   5 B737-400
                                                                                                   13 B737-500
                                                                                                   1 Jetstream 41
 
BAX Global..............  United States           1972      Bax Global Northern Air Freight        3 B727-200A
                                                  1997      (100%)                                 11 DC8-60
                                                  1979                                             11 DC8-70
 
Canadian................  Canada                  1987      AMR (33%)                              12 A320-200
                                                                                                   41 B737-200
                                                                                                   4 B747-400
                                                                                                   9 B767-300ER
                                                                                                   4 DC10-30
                                                                                                   5 DC10-30ER
</TABLE>
 
                                       52
<PAGE>   54
 
<TABLE>
<CAPTION>
                                                  BEGAN            GOVERNMENT/COMMERCIAL
LESSEE                    DOMICILE              OPERATION      AIRLINE/PRINCIPAL SHAREHOLDERS      FLEET(1)
- ------                    --------              ---------      ------------------------------      --------
<S>                       <C>                   <C>         <C>                                    <C>
China Southwest.........  People's Republic       1987      People's Republic of China (100%)      1 B707-300
                          of China                                                                 16 B737-300
                                                                                                   11 B757-200
                                                                                                   3 AN-24
                                                                                                   5 TU-154
                                                                                                   4 Y-12
 
FEAT....................  Taiwan                  1957      China Development (controlled by the   2 B737 200A
                                                            KMT, Taiwan's ruling party) (14%)      3 B757-200
                                                            China Airlines (10%)                   7 MD82
                                                                                                   3 MD83
 
Indian Airlines.........  India                   1953      Government of India (100%)             1 Fairchild 228-200
                                                                                                   7 B737-200A
                                                                                                   1 B737-200AC
                                                                                                   8 A300-B2-100
                                                                                                   2 A300-B4-200
                                                                                                   30 A320-200
 
Lan Chile...............  Chile                   1929      Grupo Guato (38.5%)                    18 B737-200A
                                                            Grupo Pifiera (33.1%)                  11 B767-300ER
                                                            Grupo Humas (19%)                      1 B757-200QC
                                                            Grupo Ebler (8.4%)
 
Malev...................  Hungary                 1946      Government of Hungary (63.9%)          6 B737-200A
                                                            Alitalia (30%)                         2 B737-400
                                                                                                   2 B767-200ER
                                                                                                   5 F70
                                                                                                   4 B737-300
                                                                                                   3 Tu-134
                                                                                                   5 Tu-154
 
Monarch.................  United Kingdom          1967      Cosmos Guide Holding International     4 A300-600ER
                                                            NV (100%)                              5 A320-200
                                                                                                   6 B757-200
                                                                                                   1 DC10-30
                                                                                                   1 A321-200
                                                                                                   1 L-1011-1
 
Pegasus.................  Turkey                  1990      Yapi Kredit Bank (49%)                 3 B737-400
                                                            Alper Elchin (21%)
                                                            Silkar and Net Holdings (30%)
 
PAL.....................  Philippines             1941      Lucio Tan (34%)                        11 A300-B4-200
                                                            Government (33%)                       11 B737 300
                                                                                                   10 F50
                                                                                                   1 MD11ER
                                                                                                   8 A330-300
                                                                                                   4 A340-200
                                                                                                   5 A340-300
                                                                                                   4 A320-200
                                                                                                   5 A340-300
                                                                                                   3 B747-200B
                                                                                                   4 B747-400
 
Portugalia..............  Portugal                1987      Groupo Espirito Saneto (61%)           6 F100
                                                                                                   5 RJ145
                                                                                                   1 RJ70
</TABLE>
 
                                       53
<PAGE>   55
 
<TABLE>
<CAPTION>
                                                  BEGAN            GOVERNMENT/COMMERCIAL
LESSEE                    DOMICILE              OPERATION      AIRLINE/PRINCIPAL SHAREHOLDERS      FLEET(1)
- ------                    --------              ---------      ------------------------------      --------
<S>                       <C>                   <C>         <C>                                    <C>
Spanair.................  Spain                   1987      SAS (49%)                              2 B767-300ER
                                                                                                   15 MD-83
                                                                                                   1 MD-82
                                                                                                   2 MD-87
                                                                                                   1 MD-81
                                                                                                   2 B757-200
 
Sun Express.............  Turkey                  1990      THY (60%)                              3 B737-300
                                                            Condor (Lufthansa subsidiary) (40%)    2 B737-400
 
TAM.....................  Brazil                  1976      VASP (3.35%)                           29 F100
                                                            Rolim Amao (66.6%)                     9 F50
                                                                                                   6 F27
                                                                                                   6 Citation
 
Tower Air...............  United States           1982      Tower Travel (75%)                     5 B747-100
                                                                                                   1 B747-100F
                                                                                                   9 B747-200B
                                                                                                   1 B747-200SF
 
THY.....................  Turkey                  1933      Republic of Turkey (98.7%)             7 A310-200
                                                                                                   7 A310-300
                                                                                                   5 A340-300
                                                                                                   3 B727-200A
                                                                                                   28 B737-400
                                                                                                   2 B737-500
                                                                                                   4 RJ70
                                                                                                   9 RJ100
 
Yunnan..................  People's Republic       1992      China Southwest (50%)                  14 B737-300
                          of China                          City of Kunming (Yunnan Province)      3 B767-300ER
                                                            (50%)
</TABLE>
 
- ---------------
 
   
(1) Source: Airclaims Limited CASE Database, February 15, 1998.
    
 
                                       54
<PAGE>   56
 
                        THE COMMERCIAL AVIATION INDUSTRY
 
   
     Worldwide demand for air travel has been cyclical, and is influenced by a
number of factors, including global and regional political stability, general
economic conditions, business and credit conditions, the impact of the price and
availability of jet fuel on airline costs. Technological developments in the
transport and communications fields such as high-speed rail travel and
video-conferencing which provide partial substitutes for some air travel also
affects the demand for our travel.
    
 
   
     Demand for air travel as measured by the number of fare paying passengers
carried multiplied by the distance flown in miles (revenue passenger miles, or
"RPMS") has increased since 1970 in every year but one, 1991, in which there was
a decline of 2.8% principally due to a worldwide economic slowdown intensified
by the Gulf War. This decline in demand together with a sharp increase in
surplus industry capacity led to widespread financial losses in the airline
industry. The average annual increase in RPMs from 1970 to 1997, including the
decline in 1991, was approximately 7%. Historical growth in RPMs has shown a
correlation with growth in world GDP and the decrease in the cost of air travel
on an inflation-adjusted basis.
    
 
   
     Demand has varied in different regions of the world. Since 1990 the highest
rates of annual increase in RPMs have been on certain routes in the Asia-Pacific
region, although these growth rates are expected to suffer because of the
economic crises that have recently affected several Asian economies. The lowest
rates of annual increase in RPMs have been on domestic routes within Europe and
the United States.
    
 
   
     The following table lists worldwide aviation traffic, as measured by RPMs,
and the annual growth rate in the traffic for the years indicated.
    
 
                              WORLD TRAFFIC GROWTH
                         (EXCLUDING DOMESTIC CIS RPMS)
 
<TABLE>
<CAPTION>
                                                                                 ANNUAL GROWTH IN
                                                                WORLD TRAFFIC     WORLD TRAFFIC
YEAR                                                              (IN RPMS)         (IN RPMS)
- ----                                                            -------------    ----------------
                                                                (BILLIONS)             (%)
<S>                                                             <C>              <C>
1985........................................................         868.5              --
1990........................................................       1,216.4             7.0
1995........................................................       1,569.8             5.2
1996........................................................       1,687.8             7.5
1997........................................................       1,796.6             6.4
</TABLE>
 
   
DEMAND FOR AIRCRAFT
    
 
   
     Over time, an increase in RPMs will create a demand for new aircraft
capacity to service the incremental demand for air travel over the existing
capacity provided by airlines. Growth in RPMs has been the principal long-term
factor affecting demand for aircraft. Other factors that contribute to the
demand for aircraft are:
    
 
   
     -  the need to replace aircraft that are retired at the end of their useful
        economic lives or are written off for other reasons;
    
 
   
     -  changes in aircraft productivity;
    
 
   
     -  the supply of new and used or replacement aircraft, which is affected by
        manufacturer production levels and may be affected by bankruptcies of
        significant owners or operators of aircraft;
    
 
   
     -  the ability of air transport infrastructure to accommodate commercial
        air traffic levels;
    
 
   
     -  the cost and availability of jet fuel; and
    
 
   
     -  governmental regulations and restrictions affecting the costs and
        benefits of owning and operating aircraft.
    
 
   
     The types of aircraft required by an operator are dictated principally by
its existing and anticipated structure of routes and traffic volume. An
operator's specific choice of aircraft will also depend on a number of
    
                                       55
<PAGE>   57
 
   
additional factors, including the size and composition of its current fleet, its
ability to operate and maintain particular aircraft types based on the training
of its personnel and the capacity of its ground facilities, seating capacity of
the aircraft and operating costs. Approximately 71% of commercial jet aircraft
manufactured outside the CIS since 1990 are narrowbody aircraft with the balance
being widebody aircraft. Increased airport congestion and limitations on air
traffic control systems may lead to a relative increase in the number of
widebody aircraft in the worldwide commercial jet fleet. As of February 15,
1998, of the 9,095 narrowbody aircraft in operation, approximately 21% were more
than 25 years old while only approximately 7.40% of the 3,154 widebody aircraft
in service on that date were more than 25 years old. It is difficult to predict
whether any such increase in the number of widebody aircraft will have a
material effect on the relative demand for either type of aircraft, as the
demand for replacements for older narrowbody aircraft may equal or exceed the
demand for widebody aircraft. Within the widebody sector, the availability of
newer long-haul aircraft is likely to result in a continued weak market for
earlier models such as the A300-B4-200, A310, B747-100, B747-200 and DC-10. The
newer models have lower operating costs and allow airlines to develop new
long-haul routes more efficiently as well as to increase service frequency on
established routes.
    
 
NEW AIRCRAFT SUPPLY
 
   
     There are two major manufacturers of commercial jet aircraft outside of the
CIS (Boeing and Airbus Industrie G.I.E.) and three smaller manufacturers
(British Aerospace plc, Bombardier and Embraer) which produce regional aircraft.
The manufacturers of commercial jet aircraft in the CIS are currently not a
material factor in supplying the requirements of operators outside the CIS and
the former Eastern Bloc countries. There are three principal manufacturers of
commercial jet engines: General Electric Company, through the GE Aircraft
Engines Division; United Technologies International, Inc., through Pratt &
Whitney; and Rolls Royce. There are relatively more manufacturers of turboprop
aircraft and engines than jet aircraft and engines.
    
 
   
     There has been a long-term trend toward consolidation of the commercial
aircraft manufacturing industry, evidenced by the merger between Boeing and
McDonnell Douglas, the creation of the Airbus Industrie consortium by four
European manufacturers (Aerospatiale, British Aerospace, Daimler-Benz and CASA)
and the exit of former participants such as Lockheed, Fokker and Convair. The
long lead time, high capital cost and technological sophistication required to
bring a new aircraft model to the market create significant barriers to entry
into the industry, particularly for narrowbody and widebody jet aircraft.
    
 
   
     Although most new aircraft are ordered under long-term, multi-aircraft
contracts, the volume of aircraft production has varied significantly over the
years, reflecting the changing state of the commercial aviation industry and the
economy. Manufacturers generally adjust production levels in response to their
customers' desires and financial capacity to take delivery of ordered aircraft
which in turn may be affected by the level of air traffic and the availability
of competitive used aircraft. Boeing and Airbus have both announced and
partially implemented increased production levels from the cyclical low reached
in 1995, with the result that new jet aircraft production levels are likely to
double by 1999 to over 900 aircraft. This level of production is above the
long-term requirement implied by industry forecasts, including those published
by Boeing and Airbus. The increase in production has been accompanied by very
aggressive pricing strategies in an effort to maximize their market share. A
continuation of current new aircraft production and pricing trends is likely to
have an adverse impact on AerCo's ability to generate cash flows consistent with
the assumptions described under "Description of the Notes -- Assumptions".
    
 
   
     All of the major manufacturers are implementing programs to shorten lead
times and reduce the cost of manufacturing commercial aircraft, including the
reorganization of design and production systems and business arrangements with
suppliers which have resulted in, lower escalation of future prices and shifts
in aircraft ordering patterns such that purchasers are able to acquire aircraft
at shorter lead times than previously required. Some manufacturers are also
discussing the use of lower-cost production locations. Depending on the extent
to which cost savings are achieved and passed on to aircraft purchasers these
factors could have an adverse impact on AerCo Group's ability to re-lease or
sell aircraft and on the rental rates of future leases of the aircraft.
    
 
                                       56
<PAGE>   58
 
USED AIRCRAFT SUPPLY
 
   
     The supply of used aircraft depends on the level of utilization of the
existing worldwide fleet and the net change in this fleet based on
manufacturers' production levels and aircraft retirements. Cyclical factors that
affect air travel demand also may affect the supply of used aircraft. According
to the Airclaims Limited CASE database, as of February 15, 1998 there were
approximately 606 commercial jet aircraft in storage of which approximately 57%
(345 aircraft) were Stage 2 aircraft and approximately 43% (261 aircraft) Stage
3 aircraft. The median ages of such aircraft in storage were approximately 28
and 19 years. According to third party industry sources, there was a total of
375 commercial jet aircraft available for sale or lease at such date, of which
173 were Stage 2 aircraft and 202 were Stage 3 aircraft. Approximately 33% of
such Stage 3 aircraft were narrowbodies and 67% widebodies. There are a number
of aircraft in storage that are not available for sale or lease; conversely, a
number of aircraft available for sale or lease are in service rather than in
storage. In general older aircraft are significantly more likely to be stored
than younger aircraft.
    
 
     The weak growth of air travel in the 1990-1994 period combined with high
levels of new deliveries from manufacturers in the early 1990s resulted in low
levels of profitability or significant losses for many airlines and leasing
companies, a significant increase in the supply of used aircraft and decrease in
their value, especially for older Stage 2 aircraft and older Stage 3 widebody
aircraft. There can be no assurance that such oversupply will diminish or that
any future downturn in the commercial aviation industry or the worldwide demand
for aircraft will not result in increased availability of used aircraft for
lease or sale in the future, particularly at the times Aircraft are being
marketed for lease by AerCo Group.
 
OPERATING LEASING
 
   
     Until the mid-1970s, almost all commercial aircraft were either owned by
their airline operators or leased under finance leases from financial
institutions, except for short-term leases of surplus aircraft from one airline
to another. Beginning in the mid-1970s leasing companies were willing to
purchase aircraft and undertake the risk of finding a buyer or lessee for the
aircraft.
    
 
   
     Leasing companies acquire aircraft for lease through purchases of used
aircraft, often through sale-leaseback arrangements with the operators of such
aircraft. Also, in the mid-1980s a number of leasing companies started to
acquire new aircraft directly from manufacturers, with or without lease
commitments for the aircraft. Leasing companies and other financial institutions
have become significant purchasers of new aircraft and their jet aircraft orders
and options constituted approximately 18% of outstanding jet orders as of
February 15, 1998.
    
 
     The number of airlines taking aircraft on operating leases has increased
from 82 out of a worldwide total of 313 in 1980 (approximately 26% of total
airlines) to 374 out of a worldwide total of 673 in 1997 (approximately 56% of
total airlines).
 
     Many operating lessees are airlines that cannot independently finance the
purchase of aircraft, that desire greater flexibility in fleet planning, or that
choose to take advantage of demand from leasing companies to acquire assets
through equipment sale-leaseback transactions.
 
ROLE OF GOVERNMENT
 
   
     National governments play a major role in the regulation of air
transportation through the establishment of standards of aircraft certification,
airworthiness and operation, the regulation of airspace and the provision of
services, including navigational aids, air traffic control and search and
rescue. There is a general worldwide uniformity of standards because all nations
with any significant civil aviation industry are members of the International
Civil Aviation Organization (a United Nations agency) and apply the technical
standards developed by this agency as the basis of national aviation
regulations. In many countries, the national government regulates both domestic
routes and pricing of air travel. Since the late 1980s however there has been a
trend in certain jurisdictions, such as the European Union, Australia, Mexico
and Brazil, toward limited deregulation and the progressive opening up of routes
to competition. In particular, the European Union introduced a package of
liberalization measures in 1993 affecting the licensing of air carriers, access
to
    
 
                                       57
<PAGE>   59
 
   
air routes within the European Union and fares and rates for air transportation
services. This trend towards deregulation could lead to developments similar to
those that occurred in the United States since the enactment of the Airline
Deregulation Act of 1978.
    
 
   
     National governments have also influenced the financial condition of the
commercial aviation industry ownership or support of national and local
airlines. Certain national governments also have provided financial support of
local commercial passenger jet manufacturing industries. Indirect financial
support is also provided to aircraft and engine manufacturers through the
issuance of credits and guarantees from national export credit agencies.
However, there have been recent initiatives within the European Union requiring
more stringent conditions for granting state aid to airlines, and there is a
worldwide trend toward the complete or partial privatization of many
government-owned airlines.
    
 
   
     There can be no assurance, however, that the recent trends toward
deregulation of routes and pricing of air travel and toward complete or partial
privatization of government-owned airlines will continue or will occur in the
manner announced by the relevant governments. Although such trends may result
initially in an increase in the number of airlines worldwide, they also may
result ultimately in a greater concentration of larger airlines due to the
failure of smaller, more thinly capitalized airlines. In any event, deregulation
and privatization may at times adversely affect the future market for aircraft,
including the aircraft.
    
 
TECHNICAL REGULATION
 
   
     In addition to general requirements regarding maintenance of aircraft,
aviation authorities issue airworthiness directives ("ADS") requiring the
operators of aircraft to take particular maintenance actions or make particular
modifications to a number of aircraft of designated types. ADs normally specify
a period in which to carry out the required action or modification and generally
enough time is allowed to permit the implementation of the AD in connection with
scheduled maintenance of the aircraft or engines. The lessees usually bear the
cost of compliance with ADs issued by applicable aviation authorities and,
relevant manufacturers' recommendations and AerCo Group may be required to
contribute a portion of such costs over a specified threshold. However, if a
lessee fails to perform ADs required on an aircraft, AerCo Group would bear the
cost of compliance necessary for the Aircraft to maintain its Certificate of
Airworthiness. In such circumstances, funds in the collection account and lessee
funded account will be available to mitigate the costs of compliance, although
such use would reduce the availability of such amounts to cover the cost of
scheduled maintenance. There can be no assurance that such funds will be
available at the time needed or that any funds available will be sufficient for
such purposes.
    
 
   
     Other governmental regulations may apply to the aircraft, including
requirements relating to noise and emissions levels. Such regulations may be
imposed not only by the jurisdictions in which the aircraft are registered, but
also in jurisdictions where the aircraft operate. Chapters 2 and 3 of Chicago
Convention establish two progressively restrictive noise level standard that
correspond to the requirements for Stage 2 and Stage 3 aircraft. A number of
jurisdictions have adopted, or are in the process of adopting, noise regulations
which will require all aircraft to comply with the most restrictive of these
standards. Such regulations restrict the future operation of aircraft that are
not Stage 3 aircraft and will prohibit the operation of such aircraft in the
relevant jurisdictions early in the next century (1999, in the case of the
United States). Since AerCo Group has the ability to acquire Stage 2 aircraft,
these regulations may affect AerCo adversely. In addition, local municipalities
may have more stringent noise regulations than those applicable to Stage 3
aircraft.
    
 
   
     Volume 2 of Annex 16 of the Chicago Convention also contains standards and
recommendations regarding limitations on vented fuel and smoke and gaseous
emissions for aircraft. While a number of countries have adopted regulations
implementing these recommendations, such regulations generally have been
prospective in nature, requiring only that newly manufactured engines meet
particular standards after a particular date. To the extent that these
regulations require modifications to the engines owned by AerCo Group, they
would be treated similar to ADs under the leases.
    
 
                                       58
<PAGE>   60
 
                           MANAGEMENT OF AERCO GROUP
 
   
     Except as described in this prospectus, particularly upon an Event of
Default, neither the Trustee nor any Noteholders has a right to participate in
AerCo's management or affairs. Neither the Trustee nor any Noteholder can
supervise the functions relating to the leases and the re-lease of the aircraft,
which are delegated to Babcock & Brown under the Servicing Agreement.
    
 
DIRECTORS
 
   
     AerCo's board of directors will have no more than five members. The holder
or holders of a majority in aggregate principal amount of AerCo's Class E Notes
have the right to appoint two directors while the Class E Notes are outstanding.
The remaining directors must be independent directors. The initial independent
directors of AerCo are Mr. Frederick W. Bradley, Jr., Chairman of AerCo, Mr.
Kenneth N. Peters and Mr. G. Adrian Robinson. The succeeding independent
directors will be appointed by a majority of the then standing directors. If no
independent directors are serving on the board at any time, three new
independent directors will be appointed in accordance with AerCo's Articles of
Association. Mr. Edward Hansom and Ms. Rose Hynes were appointed directors by
AerFi as holder of the majority of the Subclass E-1 Notes. Any resolution of the
board of directors will require the affirmative vote of a majority of the
independent directors. Transactions and proceedings that relate to certain
insolvency proceedings, amendments to AerCo's Memorandum or Articles of
Association, acquisition of additional aircraft, mergers or the sale of all or
substantially all of AerCo's assets may only be approved by a unanimous vote of
all directors.
    
 
   
     The directors, their ages and principal activities are as follows:
    
 
<TABLE>
<CAPTION>
NAME                                          AGE    OFFICES HELD WITH THE REGISTRANT
- ----                                          ---    --------------------------------
<S>                                           <C>    <C>
Frederick W. Bradley, Jr..................    71     Director and Chairman
Kenneth N. Peters.........................    63     Director
G. Adrian Robinson........................    49     Director
Edward Hansom.............................    40     Director
Rose Hynes................................    40     Director
</TABLE>
 
   
     Frederick W. Bradley, Jr. -- From 1969 until 1992, Mr. Bradley was a Senior
Vice President of Citibank N.A., in charge of the bank's global airline and
aerospace business, having joined Citibank in 1958. Mr. Bradley has served as a
director and Chairman of ALPS 94-1 since 1994. Mr. Bradley also serves as a
director and Chairman of Aircraft Lease Portfolio Securitisation 92-1 Limited.
Mr. Bradley is also a director of America West Airlines, Inc., First Citicorp
Life Insurance Co., and the Institute of Air Transport, Paris, France and is
president of the International Air Transport Association's (IATA) International
Airline Training Fund of the United States.
    
 
     Kenneth N. Peters -- Mr. Peters was Assistant Treasurer of The Boeing
Company from 1985 to 1995 and was Vice President, Customer Financing at The
Boeing Company from 1995 until his retirement from The Boeing Company in 1997.
From 1960 to 1985, Mr. Peters held various positions with The Boeing Company
including the positions of Manager and Director of Customer Financing within the
Corporate Treasurer's Organization.
 
   
     G. Adrian Robinson -- Mr. Robinson has been an Aerospace Consultant since
1992. From 1990 to 1992 Mr. Robinson was a Deputy General Manager of The Nippon
Credit Bank. Until 1989, he was a Managing Director, Special Finance Group of
Chemical Bank, which he joined in 1986. Mr. Robinson also serves as a director
of ALPS 94-1 and its subsidiaries and Aircraft Lease Portfolio Securitisation
92-1 Limited and its subsidiaries. Mr. Robinson also provides consulting
services from time to time to Air 2000, one of the lessees.
    
 
   
     Edward Hansom -- Mr. Hansom is Chief Financial Officer of AerFi. He joined
AerFi in 1988 from the treasury division of Schroders. Prior to taking up his
current position in May 1997, Mr. Hansom was General Manager, Treasury of AerFi
Group.
    
 
                                       59
<PAGE>   61
 
   
     Rose Hynes -- Ms. Hynes is General Counsel of AerFi. She joined AerFi Group
in 1988, having previously been a partner in an Irish law firm. Prior to taking
up her current position with AerFi in May 1997, she was Vice President,
Corporate Finance of AerFi. Ms. Hynes also serves as a director of Aer Lingus,
one of the lessees, and certain of its subsidiaries.
    
 
   
     AerCo's directors are non-executive and AerCo does not and will not have
any employees or executive officers. Accordingly, the board of directors relies
upon Babcock & Brown, the administrative agent, the cash manager and the other
service providers for all asset servicing, executive and administrative
functions under the service provider agreements. Certain individuals other than
the directors listed above serve as directors of various subsidiaries of AerCo.
    
 
   
     All directors are compensated for travel and other expenses incurred by
them in the performance of their duties. AerCo pays each independent director an
aggregate fee of $75,000 per annum for their services. The directors appointed
by the holder of a majority in aggregate principal amount of the Class E Notes
do not and will not receive remuneration from AerCo for their services.
    
 
   
     Mr. Bradley, Mr. Peters and Mr. Robinson also act as directors of certain
AerCo Group subsidiaries. Mr. Bradley, Mr. Peters and Mr. Robinson each receive
$1,000 for each day, or portion of a day, which they are required to devote to
the activities of those subsidiaries and AerCo (other than in respect of its
board meetings).
    
 
   
     AerCo knows of no arrangement, the exercise of which could result in a
change in control of AerCo.
    
 
   
BENEFICIAL OWNERSHIP OF AERCO
    
 
   
<TABLE>
<CAPTION>
                                                                          NUMBER OF    PERCENT
TITLE OF CLASS      NAME AND ADDRESS                                       SHARES      OF CLASS
- --------------      ----------------                                      ---------    --------
<S>                 <C>                                                   <C>          <C>
Common Stock        Mourant & Co. Trustees Limited,...................    19 Shares       95%
                    as trustee of AerCo Holding Trust
                    22 Grenville Street
                    St. Helier
                    Jersey, Channel Islands
 
                    AerFi Group plc...................................      1 Share        5%
                    Aviation House
                    Shannon,
                    Ireland
</TABLE>
    
 
   
     Under the Shareholders Undertaking entered into on July 15, 1998 by Mourant
& Co. Trustees Limited as trustee of the Charitable Trust (the "CHARITABLE TRUST
TRUSTEE"), the Nominees, AerFi, AerCo and the Trustee, the Charitable Trust
Trustee and AerFi agreed that, as long as the AerCo Notes are outstanding, they
will not, without the prior written approval of the Trustee and all the
directors, transfer any part of the Capital Stock held by them or any interest
therein unless the transferee:
    
 
   
     (1)  in the case of the capital stock held by the Nominees for the
          Charitable Trust Trustee, is a trustee of a trust formed for
          charitable purposes substantially identical to those for which the
          Charitable Trust is established; and
    
 
   
     (2)  enters into an agreement substantially identical to the Shareholders
          Undertaking in favor of the Trustee.
    
 
   
     In consideration for the undertakings given by the Charitable Trust Trustee
in the Shareholders Undertaking, the Charitable Trust Trustee is entitled to
receive from AerCo an undertaking fee equal to $1,500 per annum. Pursuant to the
instrument of trust establishing the Charitable Trust, a certificate given by
the directors to the Charitable Trust Trustee that its voting of the capital
stock in a specified manner is in the best commercial interests of AerCo shall,
for the purposes of the exercise of the Charitable Trust Trustee's discretion,
be conclusive that any such action is in the best commercial interests of AerCo.
    
 
                                       60
<PAGE>   62
 
THE SERVICER
 
   
     Babcock & Brown and its affiliates cannot be held responsible for any
liabilities of AerCo or its affiliates, including any payments due to you on the
Notes.
    
 
   
     Babcock & Brown provides services under the servicing agreement to AerCo
Group (except where a substitute servicer may perform the services as described
below). The servicing agreement details Babcock & Brown's:
    
 
   
     - various duties for the management and administration of our aircraft and
       the related leases,
    
 
   
     - aircraft marketing activities, and
    
 
   
     - initial aircraft management-related obligations in connection with offers
       and sales by AerCo of refinancing notes or additional notes.
    
 
   
     OPERATING GUIDELINES
    
 
   
     Babcock & Brown does not have any fiduciary or other implied duties to you
or AerCo, and its obligations are limited to the express terms of the servicing
agreement. In accordance with the express terms of the servicing agreement,
Babcock & Brown will act in accordance with applicable law and with AerCo's
directions.
    
 
   
     Babcock & Brown may exercise such authority as is necessary to give it a
practicable and working autonomy in performing the services and must also comply
with the following two contractual standards in performing its services.
    
 
   
     (1) Babcock & Brown must perform its services with reasonable care and
         diligence as if it were the owner of the aircraft consistent with the
         customary commercial practice of a prudent international aircraft
         lessor in the management, servicing and marketing of commercial jet
         aircraft and related assets. This is referred to in this prospectus as
         the Babcock & Brown Services Standard.
    
 
   
     (2)  If a conflict of interest arises regarding Babcock & Brown's
          management, servicing or marketing of: (a) any two aircraft or (b) any
          aircraft and any other assets owned, managed, serviced or marketed by
          the Babcock & Brown Group, Babcock & Brown is required to notify AerCo
          and perform the services in good faith. If the two aircraft and other
          assets owned, managed, serviced or market by Babcock & Brown are
          substantially similar in terms of objectively identifiable
          characteristics that are relevant for the particular services to be
          performed, Babcock & Brown will not discriminate among the aircraft or
          between any of the aircraft and any other aircraft then owned,
          managed, serviced or marketed by Babcock & Brown on an unreasonable
          basis. This is referred to in this prospectus as the Babcock & Brown
          Conflicts Standard.
    
 
   
     All transactions to be entered into by Babcock & Brown on behalf of AerCo
Group (other than with other persons within AerCo Group) must be at arm's length
and on fair market value terms unless otherwise agreed or directed by AerCo.
Certain transactions or matters with respect to the aircraft require the
specific written approval of AerCo, including:
    
 
   
     -  sales of (or agreements to sell) aircraft or any engine forming part of
        the aircraft unless required by the lease;
    
 
   
     -  the entering into new leases (including amendments, renewals or
        extensions of an existing lease) that does not comply with the operating
        covenants;
    
 
   
     -  terminating any lease for any aircraft having an aggregate depreciated
        net book value over $100 million;
    
 
                                       61
<PAGE>   63
 
   
     -  entering into any contract for modification or maintenance of the
        aircraft if:
    
 
   
       -- the cost to AerCo is more than, the greater or, the estimated cost of
          a heavy maintenance check for the airframe and the engines or the
          available maintenance reserves or other collateral under the related
          lease, or
    
 
   
       -- the modification or maintenance is outside the ordinary course of
          AerCo Group's business.
    
 
   
     However, AerCo's written approval is not required if the budget provides
for the cost of the modification or maintenance.
    
 
   
     -  entering into any capital commitment or confirming any order or
        commitment to acquire aircraft or engines;
    
 
   
     -  issuing any guarantee on behalf of any person within AerCo Group other
        than guarantees:
    
 
   
       -- by one AerCo Group member of the lease obligations of another, or
    
 
   
       -- for trade payables incurred in the ordinary course of AerCo Group's
          business;
    
 
   
     -  entering into any agreements for services costing more than $50,000 to
        be provided by third parties at AerCo Group's cost, unless this is an
        expense provided for in the budget; and
    
 
   
     -  entering into or amending or granting a waiver in any transaction with
        Babcock & Brown or any of its affiliates on behalf of any person within
        AerCo Group.
    
 
   
     In accordance with the express terms of the servicing agreement, Babcock &
Brown will act in accordance with applicable law and with AerCo's directions,
and will perform its services in accordance with the Babcock & Brown Services
Standard and the Babcock & Brown Conflicts Standard. Babcock & Brown does not
have any fiduciary or other implied duties to you or AerCo, and its obligations
are limited to the express terms of the servicing agreement.
    
 
   
     Babcock & Brown also manages, services and markets aircraft assets owned by
third parties and persons within the Babcock & Brown Group. Babcock & Brown may
have conflicts of interest in performing its obligations on behalf of AerCo
Group. If a conflict of interest arises during the negotiation of a transaction,
Babcock & Brown may withdraw its representation of AerCo, and act on behalf of
itself.
    
 
   
     Babcock & Brown is not liable to any person, other than AerCo Group to the
limited extent described below, for any losses relating to
    
 
   
     - the sale, lease or purchase of our aircraft on less favorable terms than
       might have been achieved at any time, so long as the transactions were
       entered into on the basis of a commercial decision or recommendation of
       Babcock & Brown in accordance with the Babcock & Brown Services Standard;
    
 
   
     - Babcock & Brown's obligation to apply the Babcock & Brown Conflicts
       Standard in performing its services, except, where the losses are finally
       adjudicated to have been caused directly by their negligence,
       recklessness, wilful misconduct or fraud;
    
 
   
     - the ownership, operation, maintenance, acquisition, leasing, financing,
       refinancing or sale of any of our aircraft, or any action, or failure to
       act on the part of any person at any time, prior to the effective date of
       the Servicing Agreement;
    
 
   
     - any action that AerCo, the cash manager or the administrative agent,
       instructs Babcock & Brown to take, limit or terminate despite Babcock &
       Brown's contrary recommendation;
    
 
   
     - AerCo Group's refusal to take any action that Babcock & Brown recommends;
    
 
   
     - circumstances where any person within AerCo Group has received amounts
       sufficient to cover such losses; or
    
 
   
     - the gross negligence, recklessness, fraud or wilful misconduct of any
       person within AerCo Group.
    
 
                                       62
<PAGE>   64
 
   
     AerCo Group will indemnify Babcock & Brown and its affiliates and
representatives on an after-tax basis for any losses that may be asserted
against them relating to:
    
 
   
     - Babcock & Brown's performance under the Servicing Agreement;
    
 
   
     - errors in judgment or omissions by Babcock & Brown or any action taken,
       limited or terminated in accordance with AerCo's, the cash manager's or
       the administrative agent's instructions, except where the losses are
       finally adjudicated to have been caused by Babcock & Brown's negligence,
       recklessness, fraud or wilful misconduct in performing its obligations;
       or
    
 
   
     - any of the circumstances under which Babcock & Brown would not be liable
       to AerCo as described above.
    
 
   
     Babcock & Brown will indemnify AerCo Group on an after-tax basis for losses
arising from the performance of its services, where the losses are finally
adjudicated to have:
    
 
   
     - been caused directly by the negligence, recklessness, fraud or wilful
       misconduct of Babcock & Brown or any of its affiliates or delegates in
       respect of its obligations to apply the Standard of Care or the Conflicts
       Standard in connection with the performance of its services; or
    
 
   
     - directly resulted from a breach by Babcock & Brown of the express terms
       and conditions of the Servicing Agreement.
    
 
   
     Babcock & Brown's obligation to indemnify AerCo excludes circumstances
where any person within AerCo Group has already received an amount sufficient to
cover such losses and is limited to a maximum amount of $21 million in the
aggregate with respect to any and all losses, except for losses arising from
fraud on the part of Babcock & Brown, for which Babcock & Brown will have
unlimited liability.
    
 
   
     AIRCRAFT SERVICES
    
 
   
     Babcock & Brown has agreed to:
    
 
   
     - engage and maintain the necessary staff and supporting resources required
       to perform its services;
    
 
   
     - grant AerCo Group and its agents, access to its information, programs,
       records and personnel to enable AerCo Group to monitor its compliance
       with the Servicing Agreement and for general AerCo Group business; and
    
 
   
     - separate its own funds from the funds of any person within AerCo Group.
    
 
   
     Babcock & Brown provides a wide range of services to AerCo Group,
including:
    
 
   
     - lease marketing, such as remarketing, lease drafting, negotiation and
       execution;
    
 
   
     - initial aircraft asset management, such as rent collection, aircraft
       maintenance, insurance, contract compliance and enforcement against
       current lessees, and accepting delivery and redelivery of aircraft;
    
 
   
     - current aircraft sales;
    
 
   
     - arranging valuations and monitoring and advising AerCo on regulatory
       developments;
    
 
   
     -  assisting AerCo to stay in compliance with certain covenants under the
        indenture;
    
 
   
     - providing AerCo with data and information relating to the our aircraft
       and the commercial aviation industry;
    
 
   
     - assistance with any public or private offerings and sale of refinancing
       notes or additional notes;
    
 
   
     - assistance with Permitted Tax-Related Dispositions or other permissible
       tax-based financings;
    
 
   
     - legal and other professional services relating to the lease, sale or
       financing of the our aircraft, amendment modification or enforcement of
       our aircraft lease; and
    
 
   
     - periodic reporting of operational, financial and other information on our
       aircraft and leases.
    
                                       63
<PAGE>   65
 
   
     BUDGETS
    
 
   
     AerCo will adopt an annual and a three-year budget each year for all
aircraft. Babcock & Brown has agreed to use reasonable commercial efforts to
achieve the annual budget.
    
 
     MANAGEMENT FEES
 
   
     Babcock & Brown is paid a retainer fee in an annual amount equal to
approximately 0.10% of the initial appraised value of each aircraft in our
fleet. The retainer fee is payable monthly in arrears in equal installments and
subject to pro-rata reduction for any month in which AerCo does not own all the
aircraft currently in our fleet. In calculating the retainer fee, the initial
appraised value may not be reduced below $250 million until all of the aircraft
are sold. Babcock & Brown also receives a monthly fee, equal to 1% of the
aggregate rent paid for that month (or portion of a month) that AerCo Group owns
the related aircraft which are subject to Babcock & Brown servicing.
    
 
   
     Babcock & Brown will also receive three incentive fees:
    
 
   
     -  a results-based incentive fee, based on a formula to be agreed upon by
        Babcock & Brown and AerCo, or if no such agreement is reached, equal to
        12.50% of any excess of actual revenues available to repay holders of
        AerCo's publicly and privately issued debt securities for any year over
        95% of the target amount contained in the applicable annual budget;
    
 
   
     -  a sales based fee of 1.25% multiplied by 90% of the initial appraised
        value of any Aircraft that is sold, net of transaction expenses; and
    
 
   
     -  a sales-based incentive fee equal to 10% of the excess of the net
        proceeds of an aircraft sale over the target sales price for the
        aircraft agreed by AerCo and Babcock & Brown. Babcock & Brown will be
        reimbursed for various out of pocket expenses incurred in connection
        with the performance of the Services.
    
 
   
     Babcock & Brown also will be reimbursed for certain expenses incurred in
connection with its performance of the services. These expenses include, among
other expenses, aircraft non-ordinary course maintenance costs and insurance,
non-ordinary course outside professional advisory fees (including legal fees)
and other out of pocket expenses, all of which in the aggregate may constitute a
significant additional component of AerCo's total overhead costs.
    
 
     TERM AND TERMINATION
 
   
     The servicing agreement is for an initial term of 10 years expiring on July
15, 2008. AerCo may extend the term of the Servicing Agreement to July 15, 2023
upon at least six months written notice to Babcock & Brown and subject to an
increase in the rental fee percentage.
    
 
   
     Babcock & Brown may terminate the Servicing Agreement if:
    
 
   
     -  AerCo does not pay:
    
 
   
       -- any servicing fees within five business days of a written delinquency
          notice, or
    
 
   
       -- any other amount payable by any person within AerCo Group within 10
          business days of a delinquency notice;
    
 
   
     -  any person within AerCo Group violates any material term, covenant,
        condition or agreement under the Servicing Agreement;
    
 
   
     -  an involuntary proceeding under applicable bankruptcy, insolvency,
        receivership or similar law against AerCo, any of its subsidiaries or a
        substantial part of the property or assets of any person within AerCo
        Group, continues undismissed for 100 days or an order or decree
        approving any of the foregoing shall be entered or any such person goes
        into liquidation, suffer a receiver or mortgagee to take possession of
        all or substantially all of its assets or have an examiner appointed
        over it, or a petition or proceeding is presented for any of the
        foregoing and not discharged within 100 days;
    
                                       64
<PAGE>   66
 
   
     -  a voluntary proceeding is commenced under bankruptcy, insolvency,
        receivership or similar law against AerCo or any of its subsidiaries,
        AerCo or any of its subsidiaries consents to the institution of, or
        fails to contest the filing of, any petition described above, or files
        an answer admitting the material allegations of any such petition, or
        makes a general assignment for the benefit of its creditors;
    
 
   
     -  Babcock & Brown or its affiliates become liable for taxes, except income
        taxes, arising from its performing services to AerCo, if:
    
 
   
       -- Babcock & Brown cannot avoid the taxes using reasonable commercial
          efforts, and
    
 
   
       -- AerCo does not indemnify Babcock & Brown or its affiliates for the
          taxes;
    
 
   
     -  directions given by AerCo or any of its subsidiaries are, or if carried
        out would be, unlawful under applicable law.
    
 
   
     AerCo may terminate the Servicing Agreement if:
    
 
   
     -  Babcock & Brown breaches any of its obligations under the Servicing
        Agreement and fails to cure the breach after written notice from AerCo;
    
 
   
     -  Babcock & Brown ceases or gives notice that it will cease to be actively
        involved in the aircraft advisory and management business;
    
 
   
     -  AerCo repays, refinances or defeases all of its public or private debt
        securities in full;
    
 
   
     -  Babcock & Brown undergoes a change of control;
    
 
   
     -  an involuntary proceeding under bankruptcy, insolvency, receivership or
        similar law, against Babcock & Brown or a substantial part of its
        property or assets, continues undismissed for 120 days or an order or
        decree approving any of the foregoing shall be entered or Babcock &
        Brown goes into liquidation, suffer a receiver or mortgagee to take
        possession of all or substantially all of its assets or have an examiner
        appointed over it, or a petition or proceeding for any of the foregoing
        being presented and not discharged within 120 days;
    
 
   
     -  a voluntary proceeding is commenced against Babcock & Brown under
        bankruptcy, insolvency, receivership or similar law upon consent by
        Babcock & Brown to the institution of, or failure by Babcock & Brown to
        contest the filing of, any petition described above, or filing of an
        answer admitting the material allegations of any such petition, or the
        making of a general assignment for the benefit of its creditors;
    
 
   
     -  upon six months' written notice; and
    
 
   
     -  upon less than six months written notice, if Babcock & Brown is paid:
    
 
   
       -- a retainer fee,
    
 
   
       -- a rental fee (based on rent budgeted to be received during the period)
    
 
   
       -- an incentive fee (based on the achievement of an approved budget
          target)
    
   
         for a six-month period after written notice of termination is received,
          and
    
 
   
       -- payment of the termination fee set out below.
    
 
   
     The termination fee shall be the following percentage of initial appraised
value as of the date of termination:
    
 
   
<TABLE>
       <S>                                                             <C>    <C>
       On or after March 31, 1998 but prior to March 31, 2001......    0.20%
       On or after March 31, 2001 but prior to March 31, 2003......    0.15%
       On or after March 31, 2003 but prior to March 31, 2005......    0.10%
       Thereafter..................................................    Nil
</TABLE>
    
 
                                       65
<PAGE>   67
 
   
     However, AerCo may terminate the Servicing Agreement upon less than six
months written notice and pay only 50% of the termination fee described above,
if:
    
 
   
     -  Babcock & Brown or any of its affiliates is retained to service a fleet
        of commercial jet aircraft on or available for lease having an aggregate
        appraised value exceeding the lesser of;
    
 
   
       -- $3.50 billion in appraised value, or
    
 
   
       -- 50% or more (by appraised value) of all commercial jet aircraft then
          serviced by Babcock & Brown and its affiliates or;
    
 
   
     -  Babcock & Brown or any of its affiliates acquires or makes an equity
        investment in any aircraft portfolio, securitization vehicle or other
        entity that owns or leases commercial jet aircraft on or available for
        lease where such investment represents more than 20% of the total equity
        of such entity and the appraised value of the portfolio exceeds the
        lesser of;
    
 
   
       -- $2.50 billion in appraised value, and
    
 
   
       -- the amount which represents 35% of all commercial jet aircraft (by
          appraised value) then serviced by Babcock & Brown and its affiliates.
    
 
   
     AerCo may terminate the Servicing Agreement for any aircraft to which any
of the following conditions apply:
    
 
   
     -  in the case of marketing for re-lease of an aircraft, such aircraft has
        been off-lease and is reasonably available for re-lease for more than
        180 days after expiry of the agreed lease marketing period; or
    
 
   
     -  Babcock & Brown fails, within a reasonable period of time (not to exceed
        180 days), to submit to AerCo a bona fide third party offer to purchase
        an aircraft after written direction from AerCo to arrange such a sale;
        or
    
 
   
     -  Babcock & Brown recommends a course of action for an aircraft or lease
        to AerCo which AerCo does not approve and, after negotiation in good
        faith, Babcock & Brown refuses to amend, withdraw or replace such
        recommendation with one that is consistent with its obligations.
    
 
     ASSIGNMENT OF SERVICING AGREEMENT
 
   
     Babcock & Brown and AerCo may not assign their rights and obligations under
the Servicing Agreement without each other's prior consent.
    
 
     PRIORITY OF PAYMENT OF SERVICING FEES AND REIMBURSABLE EXPENDITURES
 
   
     Babcock & Brown's fees and expenses rank senior in priority of payment to
all payments on the Notes.
    
 
     ADDITIONAL SERVICERS
 
   
     AerCo may appoint Babcock & Brown to service additional aircraft on the
terms of the Servicing Agreement. AerCo may also appoint a third party to
service additional aircraft with confirmation by the rating agencies that this
will not result in the lowering or withdrawals of any ratings assigned to the
Notes. See "Description of the Notes -- Payment of Principal and Interest --
Operating Covenants" for additional information on limitations on AerCo's
ability to appoint additional servicers for additional aircraft.
    
 
CORPORATE MANAGEMENT
 
   
     ADMINISTRATIVE AGENT
    
 
   
     The administrative agent provides administrative and accounting services to
the board of directors including:
    
 
   
     -  monitoring and reporting on the performance of AerCo Group's service
        providers to the board of directors on a quarterly basis;
    
                                       66
<PAGE>   68
 
   
     -  acting as liaison with the rating agencies;
    
 
   
     -  establishing and maintaining AerCo Group's accounting ledgers providing
        quarterly and annual draft accounts for AerCo Group and individual
        companies within AerCo Group;
    
 
   
     -  preparing annual and three year budgets;
    
 
   
     -  authorizing payment of certain expenses;
    
 
   
     -  coordinating any amendments to the transaction agreements, other than
        the leases;
    
 
   
     -  procuring, supervising and coordinating AerCo Group's outside legal
        counsel, accounting, tax and other professional advisors;
    
 
   
     -  preparing and coordinating reports to investors and the Commission;
    
 
   
     -  assisting AerCo Group's tax advisors with the preparation and filing of
        all required tax returns;
    
 
   
     -  assisting AerCo in developing and implementing its interest rate
        management policy and developing financial models, cash flow projections
        and forecasts and in making aircraft lease, sale and capital investment
        decisions;
    
 
   
     -  advising AerCo on the appropriate levels of the Liquidity Reserve
        Amount; and
    
 
   
     -  assisting AerCo with the public or private offerings of refinancing
        notes.
    
 
   
     AerCo's board of directors may ask the administrative agent to provide
additional administrative services. However, the administrative agent is not
obligated to perform any additional services that could reasonably result in the
business of AerCo or any of its subsidiaries ceasing to be separate and readily
identifiable from, and independent of, the administrative agent, AerFi Group or
any of their respective affiliates.
    
 
   
     The administrative agent receives a monthly administrative fee equal to 2%
of the rental payments for each month. The administrative fee must be at least a
minimum of $200,000 per year and will be adjusted for inflation. The
administrative agent will receive an additional fee for services provided in
connection with the public or private offering of securities by AerCo equal to
0.025% of the net proceeds of the offering. The administrative agent is
reimbursed for certain expenses incurred in performing its services under the
Administrative Agency Agreement.
    
 
   
     The administrative agent may resign on 60 days' written notice and AerCo
may remove the administrative agent on 120 days' written notice. However, the
administrative agent may not resign or be removed unless AerCo or a court of
competent jurisdiction has appointed a successor administrative agent.
    
 
     CASH MANAGER
 
   
     The cash manager provides cash management and related services to AerCo
Group. The cash manager's duties include informing Babcock & Brown and the
administrative agent of the aggregate deposits in the Accounts and any other
information that is required about the Accounts. The cash manager is authorized
to invest funds held by AerCo Group in the Accounts other than the Tax
Defeasance Account in certain prescribed investments (the "PERMITTED ACCOUNT
INVESTMENTS") on permitted terms.
    
 
   
     The cash manager also calculates certain monthly payments and makes all
other calculations as required under the Cash Management Agreement based on data
provided by the servicer on the aircraft and the leases. The cash manager also
provides information required by the Trustee to provide reports to the
Noteholders.
    
 
   
     The cash manager receives a fee of $250,000 per year (as adjusted for
inflation) for its services to AerCo Group. The cash manager will not be liable
to AerCo Group for any losses or taxes payable by AerCo Group unless the losses
or taxes arise from the cash manager's own gross negligence (or simple
negligence in the handling of funds), willful misconduct, deceit or fraud or
that of its officers, agents or employees. The cash manager will be indemnified
by the members of AerCo Group for any loss, liability or tax incurred by the
cash manager, its officers, directors, agents and employees as a result of the
performance of services under the
    
 
                                       67
<PAGE>   69
 
Cash Management Agreement (other than through its own deceit, fraud, willful
default or negligence or that of its officers, directors, agents and employees).
 
   
     The cash manager may resign on 60 days' written notice and the Security
Trustee or AerCo Group may remove the cash manager upon 120 days' written
notice. However, the cash manager may not resign or be removed unless AerCo or a
court of competent jurisdiction has appointed a successor cash manager.
    
 
     COMPANY SECRETARY
 
   
     The company secretary maintains company books and records, including minute
books and stock transfer records. It makes available telephone, telecopy, telex
and post office box facilities and will maintain a registered office in the
relevant jurisdictions.
    
 
   
     Mourant & Co. Secretaries Limited acts as company secretary for members of
the AerCo Group that are incorporated in Jersey.
    
 
                                       68
<PAGE>   70
 
                      SELECTED CONSOLIDATED FINANCIAL DATA
 
   
FINANCIAL INFORMATION PRESENTED IN THIS PROSPECTUS
    
 
   
     AerCo was formed on June 4, 1998 and did not conduct any business
operations until it acquired its aircraft portfolio and issued the Old Notes on
July 15, 1998. As a result, this prospectus does not include historical
financial information for AerCo.
    
 
   
     The selected consolidated financial data set forth below have been
extracted or derived from the audited consolidated financial statements of ALPS
94-1, the predecessor business, for each of the fiscal years ended June 30,
1995, 1996 and 1997 which have been audited by Arthur Andersen, independent
chartered accountants, and for the fiscal year ended June 30, 1998, which have
been audited by KPMG, independent chartered accountants. The audited
consolidated financial statements of ALPS 94-1 for 1996, 1997 and 1998 are
included elsewhere in this prospectus.
    
 
   
     The selected consolidated financial data include the results of operations
and financial position relating to the 27 aircraft originally acquired by ALPS
94-1 from AerFi in August 1994, including:
    
 
   
     -  the Boeing 767-300ER aircraft that was purchased by AerFi from ALPS 94-1
        prior to the closing of the offering of the Old Notes and was not among
        the initial aircraft of AerCo.
    
 
   
     -  the A300-B4-200 aircraft up to April 28, 1998. This aircraft was
        acquired by AerFi from ALPS 94-1 on that date. AerFi subsequently sold
        this aircraft to AerCo at the time the Old Notes were issued.
    
 
   
     We believe that the ALPS 94-1 selected consolidated financial data set
forth below is an appropriate presentation because:
    
 
   
     -  AerCo was formed mainly for the purpose of refinancing the aircraft
        portfolio of ALPS 94-1
    
 
   
     -  Our initial portfolio included 26 of the 27 aircraft that ALPS 94-1
        originally acquired from AerFi
    
 
   
     -  The original ALPS 94-1 aircraft represented 79% of our initial portfolio
        by appraised value as at March 1, 1998
    
 
   
     -  Our ongoing aircraft leasing activities are largely the same as those
        conducted by ALPS 94-1.
    
 
   
     Such data is not indicative of, and will not be comparable with, the
consolidated financial results of AerCo Group during periods since July 15,
1998.
    
 
   
     Financial statements for the AerFi Transferred Aircraft for the year ended
June 30, 1998 are included elsewhere in this prospectus. These financial
statements include information on the A300-B4-200 aircraft only from April 28,
1998, the date AerFi acquired it. These financial statements have been audited
by KPMG, independent chartered accountants and for previous years have been
audited by Arthur Andersen independent chartered accountants. The financial
statements for the year ended June 30, 1998 are presented on the basis that the
AerFi Transferred Aircraft have been operated separately from AerFi for the
period presented. You should note that the companies owning the AerFi
Transferred Aircraft did not conduct any independent business operations in the
period presented.
    
 
   
     We have also included in this prospectus unaudited pro forma combined
financial information for AerCo Group for the year ended June 30, 1998. Such pro
forma combined financial information gives effect, among other things, to the
issuance by AerCo of the Notes, the refinancing of ALPS 94-1, the sale of the
Boeing 767-300ER and other transactions described in "Unaudited Pro Forma
Combined Financial Information".
    
 
ALPS 94-1
 
   
     The ALPS 94-1 selected consolidated financial data set out below have been
extracted or derived from the ALPS 94-1 consolidated financial statements. ALPS
94-1 did not conduct any business operations prior to its acquisition of the
original ALPS 94-1 aircraft from AerFi in 1994. Accordingly, the financial data
for the fiscal year ended June 30, 1995 only includes trading data for the
period from August 24, 1994 to June 30,
    
                                       69
<PAGE>   71
 
   
1995. These financial statements have been prepared in accordance with U.K. GAAP
which differ in certain significant respects from U.S. GAAP. For a discussion of
the principal differences and a reconciliation from U.K. GAAP to U.S. GAAP of
shareholders' equity and net income or loss at and for the fiscal years ended
June 30, 1996, 1997 and 1998, see Notes 22, 23, 24, 25 to the ALPS 94-1 audited
consolidated financial statements.
    
 
ALPS 94-1 CONSOLIDATED STATEMENT OF OPERATIONS DATA
 
   
<TABLE>
<CAPTION>
                                                                YEAR ENDED JUNE 30
                                                      ---------------------------------------
                                                        1995       1996      1997      1998
                                                      --------   --------   -------   -------
                                                                   ($ THOUSANDS)
<S>                                                   <C>        <C>        <C>       <C>
U.K. GAAP
Revenues
  Aircraft leasing.................................     86,803    102,022   102,121   101,513
Expenses
  Depreciation.....................................    (18,158)   (17,978)  (38,062)  (37,826)
  Additional depreciation..........................         --         --   (34,385)       --
  Provision for permanent diminution in aircraft
     value.........................................         --    (12,000)       --    (8,720)
  Net interest expense.............................    (64,206)   (73,576)  (71,037)  (69,785)
     Exceptional item -- makewhole premium.........         --         --        --   (11,603)
  Other expenses...................................     (3,702)    (5,581)   (5,053)   (6,599)
     Exceptional item -- termination fee...........         --         --        --   (12,700)
Operating profit/(loss)............................        737     (7,113)  (46,416)  (45,720)
  Profit on sale of aircraft.......................         --         --        --     2,426
Reduction in indebtedness..........................         --      6,647    46,273    43,327
Profit/(loss) before taxes.........................        737       (466)     (143)       33
Taxes..............................................        (69)      (200)      143       (33)
Dividends..........................................         (2)        --        --        --
Net income/(loss)..................................        666       (666)       --        --
U.S. GAAP
Depreciation.......................................    (16,442)   (32,338)  (32,339)  (32,053)
Provision for permanent diminution in aircraft
  value............................................         --    (12,000)       --      (520)
Reduction in indebtedness..........................         --         --     5,258        --
Net loss...........................................    (14,850)   (22,028)     (907)  (31,580)
</TABLE>
    
 
ALPS 94-1 CONSOLIDATED BALANCE SHEET DATA
 
   
<TABLE>
<CAPTION>
                                                                     JUNE 30
                                                  ---------------------------------------------
                                                     1995         1996        1997       1998
                                                  ----------   ----------   --------   --------
                                                                  ($ THOUSANDS)
<S>                                               <C>          <C>          <C>        <C>
U.K. GAAP
Aircraft, net of accumulated depreciation and
  provision for permanent diminution in
  aircraft value...............................      957,021      927,043    854,596    800,090
Total assets...................................    1,038,691    1,019,671    949,033    890,706
  Indebtedness.................................     (976,494)    (946,729)  (871,495)  (786,139)
  Provision for maintenance....................      (29,405)     (39,544)   (46,247)   (44,309)
Total liabilities..............................   (1,038,025)  (1,019,671)  (949,033)  (890,706)
Shareholders' equity...........................          666           --         --         --
U.S. GAAP
Aircraft, net of accumulated depreciation and
  provision for permanent diminution in
  aircraft value...............................      811,149      766,811    734,472    691,713
Indebtedness...................................     (976,494)    (953,376)  (919,157)  (877,128)
Shareholders' equity...........................     (162,438)    (184,466)  (185,373)  (216,953)
</TABLE>
    
 
                                       70
<PAGE>   72
 
ALPS 94-1 CONSOLIDATED STATEMENT OF CASH FLOWS AND OTHER DATA
 
   
<TABLE>
<CAPTION>
                                                                YEAR ENDED JUNE 30
                                                      ---------------------------------------
                                                        1995       1996      1997      1998
                                                      --------   --------   -------   -------
                                                                   ($ THOUSANDS)
<S>                                                   <C>        <C>        <C>       <C>
U.K. GAAP
Cash paid in respect of interest...................    (51,147)   (64,002)  (59,872)  (54,815)
Net cash provided by operating activities (after
  payment of interest).............................     66,526     45,532    45,119    45,721
Net cash (used in)/provided by investing
  activities.......................................   (953,859)        --        --    10,386
Net cash provided by/(used in) financing
  activities.......................................    967,496    (36,025)  (43,494)  (59,108)
Net movements in cash..............................     80,163    (25,803)   (2,886)      134
</TABLE>
    
 
ALPS 94-1 SELECTED RATIOS
 
   
<TABLE>
<CAPTION>
                                                                YEAR ENDED JUNE 30
                                                      ---------------------------------------
                                                        1995       1996      1997      1998
                                                      --------   --------   -------   -------
                                                                   ($ THOUSANDS)
<S>                                                   <C>        <C>        <C>       <C>
U.K. GAAP
Ratio of Earnings to Fixed Charges.................      1.011      0.994     0.998     1.000
U.S. GAAP
Ratio of Earnings to Fixed Charges.................      0.770      0.703     0.985     0.548
</TABLE>
    
 
- ---------------
 
   
     In relation to "Ratios of Earnings to Fixed Charges" under both U.K. GAAP
and U.S. GAAP, you should note the following:
    
 
   
     -- Earnings include pretax income from continuing operations plus fixed
        charges. Fixed charges are the total of (1) interest, whether expensed
        or capitalized, (2) amortization of debt expense and discount or premium
        relating to any indebtedness, whether expensed or capitalized and (3)
        such portion of rental expense as can be demonstrated to be
        representative of the interest factor in the particular case.
    
 
   
     -- A ratio of less than one indicates that earnings are inadequate to cover
        fixed charges. The amount by which fixed charges exceeded earnings (1)
        for the years ended June 30, 1996 and 1997 under U.K. GAAP was $0.47
        million and $0.14 million, and (2) for the years ended June 30, 1995,
        1996, 1997 and 1998 under U.S. GAAP was $14.78 million, $21.83 million,
        $1.05 million and $31.55 million.
    
 
   
     For a discussion of the differences between ALPS 94-1's results of
operations and financial position under U.S. GAAP compared with U.K. GAAP, see
Notes 22, 23, 24 and 25 to the ALPS 94-1 audited consolidated financial
statements and "Management's Discussion and Analysis of Financial Condition and
Results of Operations -- Results of Operations -- Year Ended June 30, 1997
Compared With Year Ended June 30, 1996 -- Differences between U.K. GAAP and U.S.
GAAP".
    
 
                                       71
<PAGE>   73
 
                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
GENERAL
 
   
     The Management's Discussion and Analysis of Financial Condition and Results
of Operations set forth below (except the discussion under "-- Financial
Resources and Liquidity") is based on the ALPS 94-1 selected consolidated
financial data and therefore is limited to a discussion of historical financial
data with respect to the original ALPS 94-1 aircraft and the related leases.
Investors should note, however, that because the following discussion does not
cover historical data with respect to the AerFi Transferred Aircraft, it will
not necessarily be indicative of an analysis of the consolidated financial
results of AerCo.
    
 
   
     Since ALPS 94-1 contracted to acquire the original ALPS 94-1 aircraft from
AerFi in August 1994, the market for aircraft on operating lease has experienced
generally favorable conditions. Consequently, leasing revenues and operating
cash flows have not been materially adversely affected by lessee defaults, bad
debt provisions or significant amounts of downtime. Operating cash flows in the
period 1995-98 did suffer, however, as a result of certain lessee rental
deferral and restructuring arrangements. For a description of these
arrangements, see "The Aircraft, Related Leases and Collateral -- The Lessees".
In addition, over the same period and despite the generally favorable industry
conditions, several of the lessees have been in arrears on their rental
payments. Notwithstanding any continuation of favorable industry conditions,
like ALPS 94-1, AerCo Group will likely need to address the problems of lessees
in financial difficulty with lease reschedulings, rent deferrals and other
restructuring arrangements. Further, as and when the market for aircraft on
operating lease deteriorates cyclically, lease rentals and operating cash flows
can be expected to suffer as a result of increased lessee defaults, payment
deferrals, lease restructurings and aircraft repossessions and downtime. In such
circumstances, AerCo's ability to pay interest on, and repay principal of, the
Notes may be materially adversely affected.
    
 
   
     The following discussion is based on the ALPS 94-1 consolidated financial
statements which were prepared under U.K. GAAP. U.K. GAAP differs significantly
in certain respects from U.S. GAAP. See Notes 22, 23, 24 and 25 to the ALPS 94-1
audited consolidated financial statements and "-- Differences between U.K. GAAP
and U.S. GAAP" below.
    
 
   
RESULTS OF OPERATIONS -- YEAR ENDED JUNE 30, 1998 COMPARED WITH YEAR ENDED JUNE
30, 1997.
    
 
     REVENUES
 
   
     Revenue for the year ended June 30, 1998 was $101.5 million compared with
revenue for the year ended June 30, 1997 of $102.1 million. Rentals from
European and Asia Pacific carriers represented 44.7% and 29.1%, respectively, of
ALPS 94-1's leasing revenues in the year ended June 30, 1998, with two lessees
accounting for more than 10% of ALPS 94-1's leasing revenues (Lan Chile: 15% and
Spanair: 12%) compared with two lessees in the year ended June 30, 1997, (Lan
Chile: 12% and Spanair: 11%). At June 30, 1998, ALPS 94-1 had no aircraft
off-lease.
    
 
   
     Rental rates on the seven new leases written by ALPS 94-1 since August 1994
have reflected the general trend in the commercial aviation market for operating
lease rentals, which increased slightly during 1995 and 1996 and have remained
relatively stable in 1997 and 1998. In 1996, 1997 and 1998, ALPS 94-1 entered
into new leases with respect to two aircraft (an MD83 and an A320-200), three
aircraft (one B767-300ER, one B737-400 and one F100), and one aircraft (an
A320-200) respectively. In 1996, the new lease terms written were 36 months and
84 months, respectively, and the lease rates with respect to these Aircraft
were, overall, 2% higher than the previous lease rates. The new lease terms for
leases written in 1997 were for 84, 29 and 59 months, respectively, and the
lease rates with respect to these aircraft were, overall, in line with the
previous lease rates. The new lease term written in 1998 was for 6 months.
    
 
   
     SALES
    
 
   
     One aircraft, an A300-B4-200, was sold to AerFi on April 28, 1998,
realising a profit of $2.4 million. This aircraft was subsequently sold to AerCo
at the time the Old Notes were issued.
    
                                       72
<PAGE>   74
 
   
     DEPRECIATION AND PROVISION FOR PERMANENT DIMINUTION IN AIRCRAFT VALUES
    
 
   
     The depreciation charge in the year ended June 30, 1998 amounted to
approximately $37.8 million compared to approximately $72.4 million for the same
period in 1997. Beginning on July 1, 1996, ALPS 94-1 has depreciated each
aircraft on a straight-line basis over 25 years from the date of manufacture to
a residual value of 15% of ALPS 94-1's historic cost. Prior to July 1, 1996,
ALPS 94-1 depreciated the carrying value of each aircraft at 2% per annum
increasing to 7% per annum beginning 15 years after the date of manufacture of
the aircraft to a nil residual value.
    
 
   
     The changes in these estimates were considered necessary because of
developments in the industry at that time, including the bankruptcy of one major
manufacturer, the expected acquisition of McDonnell Douglas by Boeing,
significant manufacturer discounting of new aircraft and the announcement of a
new generation of Boeing aircraft. As a result of these developments, the
directors considered that (1) the allocation of cost should be revised to a
straight line basis (rather than the previous lower allocations in earlier
years) and (2) additional depreciation of $34.4 million in 1997, reflecting the
impact of adopting the revised estimates, should be charged reflecting the
permanent impairment in value of the aircraft because of the effect of industry
circumstances referred to above on the company's fleet. See "Statement of
Accounting Policies: Aircraft" in the ALPS 94-1 consolidated financial
statements for more information about this change in estimate.
    
 
   
     In respect of the year ended June 30, 1998, directors of ALPS 94-1
determined to make a provision of $8.7 million in respect of a permanent
diminution in the book value of ALPS 94-1's three F100 aircraft. The directors
arrived at such determination based on the bankruptcy of Fokker N.V. and the
discontinuation of its aircraft manufacturing operations, resulting in
significant reductions of values and lease rates for Fokker aircraft. The net
book value of these aircraft, net of the $8.7 million provision, at June 30,
1998 was $48.5 million.
    
 
     NET INTEREST EXPENSE
 
   
     Net interest expense amounted to $69.8 million in the year ended June 30,
1998 compared to $71.0 million in the same period ended June 30 1997. The
decrease in net interest expense was primarily due to lower average debt in the
year ended June 30, 1998, including, in particular, a significant reduction in
the principal balances of the ALPS 94-1 Subclass A-1 Notes, Subclass A-2 and
Class D Note. This reduction was partially offset by a marginally higher
interest rate accrued during the year to June 30, 1998, in addition to step-up
interest being charged on the ALPS 94-1 Subclass A-2 Notes and additional
interest being accrued on the ALPS 94-1 Class E Note. The average indebtedness
outstanding during the year ended June 30, 1998 and 1997 was $902.1 million and
$936.3 million.
    
 
   
     Under the terms of the ALPS 94-1 Class E Note, interest accrues at a rate
of 10% per annum but only a portion of such interest ($3.1 million) has been
payable in cash in each of the periods under review. However, approximately
$15.4 million and $14.5 million in respect of accrued and unpaid interest of the
ALPS 94-1 Class E Note was capitalized during the years ended June 30, 1998 and
1997, respectively. Cash paid in respect of interest amounted to $54.8 million
in the year ended June 30, 1998 and $59.9 million in the year ended June 30,
1997, compared with net interest expense, which amounted to $69.8 million in the
year ended June 30, 1998 and $71.0 million in the year ended June 30, 1997,
principally reflected Class E Note interest accrued but not paid. In addition,
since November 1997, under the terms of the ALPS 94-1 Subclass A-2 Notes,
step-up interest accrued at the rate of 2% per annum in addition to the fixed
coupon of 7.15% per annum on the Subclass A-2 Notes. This step-up interest
amount was not paid until the ALPS 94-1 notes were redeemed on July 15, 1998.
    
 
   
     Net interest expense is stated after deducting interest income earned
during the relevant period. In the year ended June 30, 1998, ALPS 94-1 earned
interest income of $3.8 million compared with $2.9 million in the year ended
June 30, 1997.
    
 
   
     In each of the periods under review, ALPS 94-1 has not been party to any
interest rate or other derivative agreements.
    
 
                                       73
<PAGE>   75
 
   
     The New Notes bear interest at floating rates while the Subclass D-1 and
Subclass E-1 Notes which are held by AerFi bear a fixed rate of interest. The
aggregate principal amount of the Subclass A-1, Subclass A-2, Subclass B-1 and
Subclass C-1 Notes represents approximately 81% of AerCo's total indebtedness.
Accordingly, AerCo's exposure to movements in LIBOR is relatively greater than
for ALPS 94-1 and AerCo has adopted a hedging strategy to manage its exposure to
movements in LIBOR rates. See "-- Financial Resources and Liquidity -- Interest
Rate Management".
    
 
   
     A large proportion of AerCo's indebtedness is represented by the Notes and
the Subclass D-1 Notes which are issued on terms and conditions prevailing in
the market. To the extent that the weighted average interest cost on AerCo's
indebtedness is higher or lower than the cost of the ALPS 94-1 indebtedness
being refinanced, AerCo's net interest expense and cash paid in respect of
interest will be higher or lower, respectively, than that experienced by ALPS
94-1 historically.
    
 
     OTHER EXPENSES
 
   
     Other expenses consist of GECAS' servicer fees, insurance premiums
(political risk and directors' liability insurance), administrative agent fees,
other service provider costs and miscellaneous expenditure items. Other expenses
amounted to approximately $6.6 million in the year ended June 30, 1998 compared
with $5.1 million in the year ended June 30, 1997.
    
 
   
     In each of the years ended June 30, 1998 and 1997, servicer fees payable to
GECAS were approximately $2.9 million. Substantially all of these amounts
represent asset based fees calculated as an annual percentage of agreed values
of aircraft under management. Since July 15, 1998, Babcock & Brown is servicer
of the AerCo aircraft as described in "Management of AerCo Group -- The
Servicer".
    
 
   
     EXCEPTIONAL ITEMS
    
 
   
     In the year ended June 30, 1998, the directors approved the refinancing of
ALPS 94-1 through the issuance of the Notes by AerCo. The refinancing included
the early redemption of existing notes issued by ALPS 94-1 and the early
termination of the servicing agreement with GECAS. In connection with the
transaction, ALPS 94-1 incurred the following exceptional expenses: (1) the
makewhole premium of $11.6 million attaching to the early redemption of existing
notes issued by ALPS 94-1 and (2) the termination fee of $12.7 million payable
to GECAS, as service provider.
    
 
     OPERATING LOSS
 
   
     In the year ended June 30, 1998, ALPS 94-1 recorded an operating loss of
approximately $45.7 million compared with a loss of $46.4 million in the same
period in 1997.
    
 
     REDUCTION IN INDEBTEDNESS
 
   
     The ALPS 94-1 Class E Note has a premium interest rate attached to capture
any potential profits made by ALPS 94-1. Any losses of ALPS 94-1 are effectively
borne by the ALPS 94-1 Class E Noteholder. Accordingly an amount equivalent to
such losses, including the permanent diminution in value of aircraft, has been
released from the carrying value of the debt and credited to the statement of
operations. The decrease in the reduction in indebtedness required in the year
ended June 30, 1997 of $46.4 million compared with $43.3 million in the year
ended June 30, 1998 is primarily due to the additional depreciation charge
required in the period ended June 30, 1997 which was partially offset by the
exceptional charges required in 1998 of $11.6 million of makewhole premium and
of $12.7 million termination fee, respectively.
    
 
     TAXES
 
   
     ALPS 94-1 had a tax charge of approximately $0.03 million in the year ended
June 30, 1998, compared with a tax credit of $0.14 million in the year ended
June 30, 1997.
    
 
                                       74
<PAGE>   76
 
     NET LOSS/NET PROFIT
 
   
     As a result of the above factors, ALPS 94-1 had no net loss or profit in
either of the years ended June 30, 1998 and 1997.
    
 
RESULTS OF OPERATIONS -- YEAR ENDED JUNE 30, 1997 COMPARED WITH YEAR ENDED JUNE
30, 1996
 
     REVENUES
 
   
     Revenues for each of 1997 and 1996 were approximately $102 million. As with
1996, rentals from European and Asia Pacific carriers continued to represent
more than three-quarters of ALPS 94-1's leasing revenues in 1997. In 1997, two
lessees accounted for more than 10% of ALPS 94-1's leasing revenues (Spanair:
11%; and Lan Chile: 12%). In 1996, one lessee accounted for more than 10% of
leasing revenues (Spanair: 12%).
    
 
   
     Since it acquired the ALPS 94-1 aircraft beginning in August 1994, ALPS
94-1's operations have been conducted in relatively favorable industry
conditions that have resulted in no requirements for bad debt provisions and
only minimal levels of downtime with no material adverse impact on leasing
revenues. There have been, however, certain significant deferral and other
restructuring transactions which, although having no material adverse impact on
revenues, adversely affected operating cash flows. These restructurings are
described below. The combined effect of these restructurings was to reduce cash
collections by $0.20 million and increase cash collections by $1.50 million in
the year ended June 30, 1997 and 1996, respectively. See "The Aircraft, Related
Leases and Collateral -- The Lessees -- Payment History".
    
 
     In December 1995, ALPS 94-1 agreed with one former lessee, a U.K. charter
operator, and its parent company to the early termination of the lease of an
A320-200 aircraft. Upon termination of the lease, the A320-200 was immediately
re-leased to Airtours as part of a swap transaction pursuant to which Airtours
terminated its lease of an MD83 aircraft, which was immediately re-leased to
FEAT. In the year ended June 30, 1996, these transactions resulted in a loss of
cash flows to ALPS 94-1 of $0.60 million. Partially offsetting this loss, ALPS
94-1 received cash amounts of $0.20 million from the former lessee in the year
ended June 30, 1997.
 
   
     In early 1996, ALPS 94-1 agreed with one Latin American lessee to the
deferral of two months' rental and one month's maintenance payments in the
amount of $0.90 million. These amounts together with late payment interest and a
deferral fee were received in August 1996.
    
 
   
     In December 1996, ALPS 94-1 agreed to restructuring of the lease to
Canadian Airlines which resulted in a loss of cash flow to ALPS 94-1 of $0.90
million. These deferred amounts have since been repaid.
    
 
   
     DEPRECIATION AND PROVISION FOR PERMANENT DIMINUTION IN AIRCRAFT VALUE
    
 
   
     Depreciation expense in 1997 totaled approximately $72.4 million compared
with approximately $18 million in 1996 and 1995. The increase in depreciation
expense reflects the increased depreciation rate for 1997 as a result of the
adoption by ALPS 94-1 of new depreciation estimates. See "Results of Operations
- --Year Ended June 30, 1998 Compared With Year Ended June 30, 1997 --
Depreciation and Provision for Permanent Diminution in Aircraft Values" for more
information about this change in estimate.
    
 
   
     In 1996, the $12 million provision for permanent diminution in aircraft
values related to a particular aircraft type (A300-B4-200). No provision against
aircraft values was required in 1997. The appraised value of this A300-B4-200
aircraft at June 30, 1997 was $13.7 million compared to the net book value at
that date of $9.3 million.
    
 
     NET INTEREST EXPENSE
 
   
     Net interest expense amounted to approximately $71.0 million in 1997
compared with $73.6 million in 1996. Net interest expense reflects interest
payable on ALPS 94-1's Class A-E Notes net of amounts earned on permitted
investments of ALPS 94-1's cash balances. The decrease in net interest payable
in 1997 largely reflects a decrease in average indebtedness outstanding.
Approximately 50% of ALPS 94-1's Class A-D Notes
    
                                       75
<PAGE>   77
 
   
by principal amount outstanding at June 30, 1997 bears interest at a floating
rate determined by reference to one month LIBOR. The weighted average interest
cost on ALPS 94-1's indebtedness in 1997 was 7.40% compared with 7.50% in 1996.
Average indebtedness outstanding in 1997 was approximately $936.3 million
compared with approximately $965.8 million in 1996 reflecting a combination of
principal amortization on ALPS 94-1's Class A-D Notes, a $5.3 million reduction
in the principal amount of the Class E Note in accordance with its terms and a
compounding of $36.4 million and $21.9 million of accrued but unpaid interest on
the Class E Note in 1997 and 1996, respectively.
    
 
   
     Under the terms of the ALPS 94-1 Class E Note, interest accrues at the rate
of 10% per annum but only a portion of such interest ($3.1 million) has been
payable in cash in each of the years under review. Interest accrued, but not
paid in cash, is added to the principal amount of the ALPS 94-1 Class E Note.
Accordingly, approximately $14.5 million and $12.9 million in respect of accrued
and unpaid interest on the ALPS 94-1 Class E Note was capitalized during 1997
and 1996, respectively. The reduction in cash paid in respect of interest, which
amounted to $59.9 million in 1997 and $64 million in 1996, relative to net
interest expense, which amounted to $71.0 million in 1997 and $73.6 million in
1996, principally reflected ALPS 94-1 Class E Note interest accrued but not
paid.
    
 
     In each of the periods under review, ALPS 94-1 has not been party to any
interest rate derivative agreements.
 
     OTHER EXPENSES
 
   
     Other expenses consist of GECAS's servicer fees, insurance premiums
(political risk and directors' liability insurance), administrative agent fees,
other service provider costs and miscellaneous expenditure items. Other expenses
amounted to approximately $5.1 million in 1997 compared with $5.6 million in
1996. For a breakdown of other expenses by type, see Note 13 to the ALPS 94-1
audited consolidated financial statements. The decrease in 1997 was largely
attributable to the negotiation of a lower political risk insurance premium in
1997 and the one-time payment in 1996 to Airtours in connection with the
termination of its lease of an MD83 aircraft and the immediate re-lease of the
A320-200 formerly on lease to a U.K. operator. See "The Aircraft, Related Leases
and Collateral -- The Lessees -- Payment History".
    
 
   
     In each of 1997 and 1996, servicer fees payable to GECAS were approximately
$2.9 million. Substantially all of these amounts represent asset based fees
calculated as an annual percentage of agreed values of aircraft under
management.
    
 
     OPERATING LOSS
 
   
     In 1997 and 1996, ALPS 94-1 recorded an operating loss as a result of the
above factors. The operating loss of approximately $7.1 million in 1996
increased to approximately $46.4 million in 1997, largely as a result of the
increased depreciation charges described above.
    
 
     REDUCTION IN INDEBTEDNESS
 
   
     As described above, any operating losses of ALPS 94-1 are effectively borne
by the holder of the ALPS 94-1 Class E Note. The increase in the reduction in
indebtedness required in the year ended June 30, 1997 of $46.3 million compared
with $6.6 million in the year ended June 30, 1996, is primarily due to the
increased depreciation charge required in 1997.
    
 
     TAXES
 
     ALPS 94-1's tax credit of $0.14 million in 1997, compared to a charge of
approximately $0.20 million in 1996, reflected the approval by the Irish
authorities of the application of a lower tax rate for ALPS 94-1's Irish
subsidiary in respect of prior periods.
 
                                       76
<PAGE>   78
 
     NET PROFIT/(NET LOSS)
 
   
     As a result of the above factors, ALPS 94-1's net loss decreased from
approximately $0.7 million in 1996 to nil in 1997.
    
 
   
     DIFFERENCES BETWEEN U.K. GAAP AND U.S. GAAP
    
 
     The principal differences between U.S. GAAP and U.K. GAAP that have
affected the results of operations and financial position of ALPS 94-1, relate
to the accounting treatment of aircraft cost, depreciation accounting and
accounting for Class E Note liabilities.
 
   
     Aircraft are stated at purchase cost under U.K. GAAP. Under U.S. GAAP
aircraft are stated at AerFi's amortized cost at the date of delivery to, and
acquisition by, ALPS 94-1. The difference between the purchase cost and AerFi's
amortized cost is treated as a distribution to AerFi. The impact is to reduce
the net book value of aircraft and shareholders' equity under U.S. GAAP compared
with U.K. GAAP.
    
 
   
     For the years ended June 30, 1995 and 1996, ALPS 94-1 has provided for
depreciation of its aircraft under U.K. GAAP at rates calculated to write off
the cost of the assets to ALPS 94-1 over 25 years from the date of closing of
the ALPS 94-1 initial debt offering. The rate of depreciation in the first 15
years of an aircraft's life was 2% per annum and thereafter was 7% per annum.
Under U.S. GAAP during the years 1995 and 1996, the aircraft were depreciated on
a straight line basis so as to write off the cost of the assets over a period of
25 years from the date of delivery to ALPS 94-1 to a residual value of 15%.
Given the aircraft are all significantly less than 15 years old, depreciation
charges under U.S. GAAP were significantly higher for fiscal year 1996 than
under U.K. GAAP, thereby decreasing net income and shareholders' equity reported
under U.S. GAAP.
    
 
   
     As discussed above, however, under "Results of Operations -- Year Ended
June 30, 1998 Compared With Year Ended June 30, 1997 -- Depreciation and
Provision for Permanent Diminution in Aircraft Value", ALPS 94-1 has adopted,
with effect from and including the fiscal year ending June 30, 1997, a revised
depreciation estimate under U.K. GAAP (which will also be adopted by AerCo for
periods after the closing date). This estimate is intended to write off the cost
of the aircraft over 25 years from the date of manufacture on a straight line
basis to a residual value of 15% of historic cost. Under U.S. GAAP, for all
periods, aircraft are now also depreciated on a straight line basis at a rate
designed to write off the cost of the assets to a residual value of 15% over a
period of 25 years from the date of manufacture.
    
 
   
     In 1997 and 1998, ALPS 94-1 has recorded a reduction in the principal
balance of the ALPS 94-1 Class E Note to reflect operating losses (including any
provision for permanent diminution in aircraft value) for those years since such
losses are effectively borne by the holder of the ALPS 94-1 Class E Note. These
reductions in indebtedness increase shareholders' equity and net income (but not
operating income) under U.K. GAAP compared with U.S. GAAP. U.S. GAAP does not
allow any such reduction in indebtedness except to the extent the obligation is
legally extinguished or reduced. Under the terms of the ALPS 94-1 Class E Note,
recognition of a permanent diminution in the value of the ALPS 94-1 aircraft
results in an equivalent reduction in the principal balance of the ALPS 94-1
Class E Note. Accordingly, under U.S. GAAP, such reductions in indebtedness are
recognized only to the extent of any permanent diminution in the value of the
aircraft.
    
 
   
     For a discussion of these and other differences between U.K. GAAP and U.S.
GAAP, including certain income recognition and depreciation differences relating
to ALPS 94-1's initial acquisition of the aircraft from AerFi, see Notes 22, 23,
24 and 25 to the ALPS 94-1 audited consolidated financial statements.
    
 
FINANCIAL RESOURCES AND LIQUIDITY
 
     LIQUIDITY
 
   
     ALPS 94-1's ultimate primary source of liquidity has been, and AerCo's
primary source of liquidity is and will be, rental payments made by lessees
under the lease agreements. The principal uses of cash rental payments are and
will continue to be, expenses related to the aircraft and the servicing thereof,
corporate
    
 
                                       77
<PAGE>   79
 
   
expenses and the payment of interest on and principal of indebtedness. Such
indebtedness consists of the Notes and the Subclass D-1 and Subclass E-1 Notes
which are held by AerFi.
    
 
   
     The cash balances (including short term investments in commercial paper) at
June 30, 1998 amounted to $88.3 million compared to $91.3 million at June 30,
1997. Under the terms of its existing indebtedness, ALPS 94-1 is required to
maintain cash balances in an amount equal to (1) the amount of lessee security
deposits ($13.3 million at June 30, 1998; $15.2 million at June 30, 1997), (2)
balance sheet provisions for maintenance ($44.3 million at June 30, 1998; $46.2
million at June 30, 1997) and (3) a contingency reserve amount ($18 million at
June 30, 1998 and 1997). The terms of ALPS 94-1's indebtedness restricted the
use of such cash so that it was generally not available to service debt.
    
 
   
     Following the purchase of its share capital by AerCo, ALPS 94-1 maintains
no significant cash balances of its own AerCo Group maintains cash balances in
an amount equal to the Liquidity Reserve Amount, which was initially $40 million
plus Security Deposits of $15.5 million at December 31, 1998. The Liquidity
Reserve Amount has been determined largely based on an analysis of historical
experience, assumptions regarding AerCo Group's future experience and the
frequency and cost of certain contingencies in respect of the initial aircraft,
and is intended to provide liquidity for meeting the cost of maintenance
obligations and non-maintenance, aircraft-related contingencies such as removing
regulatory liens, complying with ADs, repossessing and re-leasing aircraft. In
analyzing the future impact of these costs, assumptions have been made regarding
their frequency and amount based upon historical experience. There can be no
assurance, however, that historical experience will prove to be relevant or that
actual cash received by AerCo Group will not be significantly less than that
assumed. Any significant variation may materially adversely affect AerCo's
ability to make payments of interest and principal on the Notes. See
"Description of the Notes -- The Accounts" for more information about the
Liquidity Reserve Amount.
    
 
     OPERATING ACTIVITIES
 
   
     Net cash provided by ALPS 94-1's operating activities in the year ended
June 30, 1998 amounted to $45.7 million compared with $45.1 million in the year
ended June 30, 1997. In the year to June 30, 1998 there was a prepayment of one
year's rentals in the amount of $5 million by one Latin American lessee which
was offset by a decrease of approximately $5.1 million in the amount of cash
paid in respect of interest of $54.8 million compared with $59.9 million in the
year to June 30, 1997.
    
 
   
     Net cash provided by ALPS 94-1's operating activities in 1997 of $45.1
million was comparable with $45.5 million provided in 1996. There was however a
reduction in cash paid in respect of interest of $4.1 million in 1997 to $59.9
million compared with $64 million in 1996. This reduction was offset by a
decrease in net cash inflows from maintenance payments and disbursements. In
1996, ALPS 94-1 received maintenance payments of $10 million more than it
disbursed to lessees, compared with only $6.7 million in 1997. In addition,
cashflows in 1997 were $0.4 million lower than in 1996 as a result of an outflow
of security deposits.
    
 
   
     Also included within cash flow from operations in the years ended June 30,
1998 and 1997 was cash generated by permitted investments of ALPS 94-1's cash
balances. These cash balances have been significantly reduced since July 15,
1998 which has resulted in a corresponding reduction in cash flow generated to
AerCo. In the years ended June 30, 1998 and 1997, cash flow from permitted
investments amounted to approximately $4.7 million and $4.5 million,
respectively.
    
 
     INVESTING AND FINANCING ACTIVITIES
 
   
     Cash flows used in financing activities in the year ended June 30, 1998
reflect the repayment of $59.1 million of principal on the ALPS 94-1 Subclass
A-1 and A-2 and Class D Notes by ALPS 94-1 compared with $43.5 million of
principal repaid on the ALPS 94-1 Subclass A-1 and A-2 and Class D Notes by ALPS
94-1 in the year ended June 30, 1997. ALPS 94-1 used approximately $36 million
in 1996 for the same purpose. The net increase in the repayment of the ALPS 94-1
Notes during 1998 is primarily as a result of the proceeds received from the
sale of the A300-B4-200 aircraft in April 1998. ALPS 94-1 has
    
 
                                       78
<PAGE>   80
 
   
recorded no cash flows used in investing activities since its purchase of
aircraft in 1995, other than $1.1 million in respect of maintenance work carried
out on the A300-B4-200 aircraft during the year ended June 30, 1998.
    
 
     INDEBTEDNESS
 
   
     Upon the closing of the offering of the Old Notes, all of ALPS 94-1's
existing financial indebtedness was repaid. Following the offering, AerCo's
indebtedness consists of the Notes, the Subclass D-1 and Subclass E-1 Notes. In
order to repay the outstanding principal balance as of the Subclass A-1 Notes
(initially $340 million) on or before their Expected Final Payment Date July 15,
2000, AerCo will have to refinance such Notes through the sale of refinancing
notes at such time. There can be no assurance that AerCo will be able to sell
refinancing notes in the amount and at the time required.
    
 
     YEAR 2000
 
   
     Many existing computer systems use only two digits to identify a year in
the date field. These systems were designed and developed without considering
the impact of the upcoming change in the century. If not corrected, many
computer applications could fail or create erroneous results by or at the Year
2000. AerCo Group has recently begun a process of assessing the potential impact
of the Year 2000 issue on its operations. Since all of its operational functions
have been delegated to the servicer, administrative agent and cash manager,
AerCo Group has no information systems of its own. It may, however, suffer a
material adverse impact on its business and results of operations if information
technology upon which the servicer, administrative agent and cash manager rely
is not Year 2000 compliant.
    
 
   
     Babcock & Brown has assessed, and continues to assess, its computer and
information systems to determine the extent of its exposure to Year 2000 risks.
Babcock & Brown believes that its computer and information systems are Year 2000
compliant, except for certain features of its e-mail and voicemail systems and
certain of its routers and phone switches. Babcock & Brown expects to complete
all material Year 2000 modifications and replacements in early 1999. However,
the potential interruptions or costs incurred to upgrade or replace certain of
Babcock & Brown's computer and information systems may have a material adverse
effect on its ability to perform its services under the servicing agreement.
Babcock & Brown is also contacting the third parties with which it deals on our
behalf to determine the extent of their exposure to Year 2000 risks and the
status of their Year 2000 compliance efforts. The administrative agent and cash
manager are reviewing their Year 2000 exposure and identifying the steps that
will need to be taken to ensure that their systems are Year 2000 compliant.
    
 
   
     Aircraft and air traffic control systems also depend heavily on
microprocessors and software technology. If the systems employed by the aircraft
are not Year 2000 compliant, it could have an adverse effect on our business and
results of operations. Major manufacturers, including Boeing and Airbus, have
begun a Year 2000 review of the systems employed on their aircraft and are
expected to advise owners, operators and service providers of the steps to be
taken to address any Year 2000 problems that are identified. Among the aircraft
systems that have been identified as being susceptible to Year 2000 problems are
certain on-board aircraft management and navigation systems. The nature and the
extent of the risks posed by potential failure of aircraft and aircraft control
systems because of Year 2000 problems has not been fully determined because the
Year 2000 review efforts are still at an early stage. It is not clear whether or
to what extent manufacturers, owners or lessees will be responsible for the
costs necessary to bring aircraft systems into Year 2000 compliance.
    
 
   
     AerCo is currently not able to make any estimate of the amount, if any, it
may be required to spend to remediate Year 2000 problems. Such expenditures
could, however, have a material adverse impact on the ability of AerCo to make
payments on the Notes.
    
 
   
     Any losses that we may incur because of Year 2000 losses may not be covered
under existing insurance, because some insurers have taken the position that
Year 2000 losses may be denied under existing policies. In addition, insurers in
the London market have recently adopted recommendations to exclude Year 2000
losses from future aviation policies, unless a specific endorsement is
purchased.
    
 
                                       79
<PAGE>   81
 
   
     INTEREST RATE RISK AND MANAGEMENT
    
 
   
     The leasing revenues of AerCo will be generated primarily from rental
payments which are either fixed or floating. In some cases, leases carry fixed
and floating rental payments for different rental periods. In the case of
floating rate leases, an element of the rental varies in line with changes in
LIBOR, generally six-month LIBOR. See "The Aircraft, Related Leases and
Collateral -- The Leases" for more information regarding the terms of our
leases. As of January 18, 1999, leases with respect to approximately 62.50% of
the aircraft by appraised value at January 18, 1999 provided for fixed rate
rental payments and approximately 37.50% provided for floating rate payments.
    
 
   
     In general, an exposure to interest rate risk relating to the Notes when
AerCo's floating interest obligations under the Notes do not correlate to the
mix of fixed and floating rate lease rental payments for different rental
periods. This interest rate exposure can be managed through the use of interest
rate swaps and other derivative instruments. The Subclass A-1, Subclass A-2,
Subclass B-1 and Subclass C-1 Notes will bear floating rates of interest. The
mix of fixed and floating rental payments contains a higher percentage of fixed
rate payments than the percentage of fixed rate interest payments on the AerCo
Notes. The effect of this gap is compounded by the fact that the reset periods
on floating rental payments are generally longer than the monthly reset periods
on the floating rate Notes. AerCo Group enters into interest rate swaps in order
to correlate the contracted fixed and floating rental payments to the fixed and
floating interest payment on the Notes.
    
 
   
     Under the swaps, AerCo Group pays fixed amounts and receives floating
amounts on a monthly basis. The Swaps amortize on the basis of the expected
paydown schedule of the Class A, B and C Notes, the expiry dates of the leases
under which lessees are contracted to make fixed rate rental payments and the
LIBOR reset dates under the floating rate leases. At least every three months,
and in practice more frequently, the administrative agent seeks to enter into
additional swaps or sell at market value or unwind part or all of the Swaps and
any future swaps in order to rebalance the fixed and floating mix of interest
obligations and the fixed and floating mix of rental payments. At December 31,
1998, AerCo Group had unamortized swaps with an aggregate notional principal
balance of $735 million.
    
 
   
     Additional interest rate exposure will arise to the extent that lessees
owing fixed rate rental payments default and interest rates have declined
between the contract date of the lease and the date of default. This exposure
can be managed through the purchase of options on interest rate swaps. However,
because of the credit quality of the lessees and the current interest rate
environment, AerCo does not currently intend to acquire any interest rate swap
options. If the credit quality of the lessees changes materially, or if the
interest rate environment warrants it, AerCo may decide to purchase interest
rate swap options, or enter into other derivative transactions such as credit
derivatives as a means of managing such risk.
    
 
   
     Through the use of interest rate swap and other interest rate hedging
instruments, it is AerCo's policy not to be adversely exposed to material
movements in interest rates. We cannot assure you, however, that AerCo's
interest rate risk management strategies will be effective in this regard. Any
change to AerCo's policy with regard to its dealing in interest rate hedging
products is subject to periodic review by the rating agencies.
    
 
   
     The directors of AerCo are responsible for reviewing and approving the
overall interest rate management policies and transaction authority limits.
Specific hedging contracts are approved by administrative agent acting within
the overall policies and limits. Counterparty risk is monitored on an ongoing
basis. Counterparties are subject to the prior approval of the directors of
AerCo. AerCo's counterparties consist primarily of the affiliates of major U.S.
and European financial institutions (which may include special purpose
derivative vehicles) whose credit ratings are consistent with maintaining the
ratings of the most senior class of AerCo Notes then outstanding.
    
 
                                       80
<PAGE>   82
 
                 UNAUDITED PRO-FORMA COMBINED FINANCIAL INFORMATION
 
   
     The unaudited pro-forma combined financial information set forth below
reflects pro-forma adjustments made to the ALPS 94-1 consolidated financial
statements and the financial statements for the AerFi Transferred Aircraft (on a
combined basis) for the year ended June 30, 1998 included elsewhere in this
prospectus that are intended to give effect to:
    
 
   
     (1)  the issuance of the AerCo Notes,
    
 
   
     (2)  the refinancing of the existing financial indebtedness of ALPS 94-1,
    
 
   
     (3)  the sale by ALPS 94-1 of the Boeing 767-300ER aircraft to AerFi, and
    
 
   
     (4)  the other transactions described in "The Refinancing of ALPS 94-1 and
        Acquisition of the Transferring Companies" (collectively, the
        "TRANSACTION").
    
 
   
     As described below, such adjustments relate to, among other things,
historical indebtedness, net interest expense, selling, general and
administrative expenses and tax amounts. The Unaudited Pro-Forma Combined
Financial Information is presented on the basis that the initial aircraft have
been operated separately from ALPS 94-1 and AerFi for the year ended June 30,
1998.
    
 
   
     AerCo, which acquired ALPS 94-1 and the AerFi Transferred Aircraft on July
15, 1998 was incorporated on June 4, 1998 with US$10,000 of ordinary share
capital, and had no trading or other activities prior to that date. Accordingly,
separate data for AerCo is not presented in the pro-forma information below.
    
 
   
     The unaudited pro-forma combined financial information has been prepared in
accordance with U.K. GAAP. U.K. GAAP differ in certain respects from U.S. GAAP.
A reconciliation from U.K. GAAP to U.S. GAAP of net assets/(liabilities) and net
loss for the year ended June 30, 1998 is presented below.
    
 
   
     This unaudited pro-forma combined financial information should be read in
conjunction with and is qualified in its entirety by reference to "Management's
Discussion and Analysis of Financial Condition and Results of Operations" and
the historical consolidated financial statements of ALPS 94-1 and AerFi
Transferred Aircraft, in each case included elsewhere herein.
    
 
   
     The unaudited pro-forma combined financial information below is provided
for illustrative purposes in conformity with the requirements of the US
Securities and Exchange Commission and does not demonstrate what AerCo's results
of operations or financial position would have been had the Transaction been
completed on July 1, 1997 or predict results of operations or net assets for any
future period or at any future date.
    
 
                                       81
<PAGE>   83
 
   
     The unaudited pro-forma combined statement of operations for the year ended
June 30, 1998 set forth below gives pro-forma effect to the Transaction as if
the Transaction had occurred on July 1, 1997.
    
 
   
                                  AERCO GROUP
    
 
   
UNAUDITED PRO-FORMA COMBINED STATEMENT OF OPERATIONS FOR THE YEAR ENDED JUNE 30,
                                      1998
    
 
   
<TABLE>
<CAPTION>
                                        AUDITED HISTORICAL RESULTS
                                        ---------------------------
                                                          AERFI                                     PRO-
                                                       TRANSFERRED                                  FORMA
                                        ALPS 94-1       AIRCRAFT        PRO-FORMA       NOTE 1    COMBINED
                                        30-JUN-98       30-JUN-98     ADJUSTMENTS(1)   REFERENCE  30-JUN-98
                                        ---------      -----------    --------------   ---------  ---------
                                          $M               $M               $M                       $M
<S>                                     <C>           <C>             <C>              <C>        <C>
Revenues
  Aircraft leasing...................       102              21              (8)          (i)         115
Expenses
  Depreciation.......................       (38)            (10)              6         (i)(ii)       (42)
  Provision for permanent diminution
     in aircraft value...............        (9)             --               9          (ii)          --
  Net interest expense...............       (70)             (7)             (4)         (iii)        (81)
  Exceptional items..................       (24)             --              24          (iv)          --
  Other expenses.....................        (7)             (5)             (1)          (v)         (13)
                                          -----           -----           -----                     -----
Total expenses.......................      (148)            (22)             34                      (136)
                                          -----           -----           -----                     -----
Net loss before tax..................       (46)             (1)             26                       (21)
  Profit on sale.....................         3              --              (3)                       --
  Benefit for taxes..................        --               1               1          (vi)           2
                                          -----           -----           -----                     -----
Net loss before reduction in
  indebtedness.......................       (43)             --              24                       (19)
  Reduction in indebtedness..........        43              --             (43)         (vii)         --
                                          -----           -----           -----                     -----
Net loss for the year................        --              --             (19)                      (19)
                                          =====           =====           =====                     =====
</TABLE>
    
 
- ---------------
 
   
(1) Represents the adjustments to the combined historical statements of
     operations of ALPS 94-1 and the AerFi Transferred Aircraft to account for
     the Transaction as if it had occurred on July 1, 1997, including:
    
 
   
     (i)   Leasing revenue and depreciation have been adjusted to reflect the
           sale of one B767-300ER owned by ALPS 94-1 (in the period between
           pricing and closing of the Offering) as if the sale had occurred on
           July 1, 1997. The resulting reductions to the aircraft leasing
           revenue was $8 million and to the depreciation charge was $3 million.
    
 
   
     (ii)  The unaudited pro-forma combined statement of operations reflects
           depreciation and provision for permanent diminution in the value of
           the initial aircraft as if the Transaction had occurred on July 1,
           1997 at a cost equivalent to the appraised value at March 1, 1998 of
           the initial aircraft ($952 million). The resulting adjustments to the
           depreciation charge was a reduction of $3 million and with respect to
           the provision for permanent diminution in the value of the initial
           aircraft, a reduction of $9 million.
    
 
   
     (iii) The unaudited pro-forma combined statement of operations reflects net
           interest expense (including interest on the Subclass E-1 Notes) which
           would have been incurred had the Transaction occurred on July 1, 1997
           and had the AerCo Notes been issued on that date bearing interest at
           the assumed rates set forth in "Description of the Notes --
           Assumptions -- Interest, Expense and Operating Cost Assumptions".
           Deferred transaction costs of $2 million are also charged in net
           interest expense.
    
 
   
     (iv) The unaudited pro-forma combined statement of operations has been
          adjusted to exclude the obligations of ALPS 94-1 in relation to the
          makewhole premium amount payable on the early redemption of existing
          Notes issued by ALPS 94-1 and the termination fee payable to the
          service provider.
    
 
   
     (v)  As part of the Transaction, AerCo entered into the Servicing Agreement
          with Babcock & Brown, the Cash Management Agreement and the
          Administrative Agency Agreement with AerFi. The unaudited pro-forma
          combined statement of operations reflects the assumed fees payable
          under those agreements as calculated in accordance with the relevant
          assumption set forth in "Description of the Notes -- Assumptions --
          Interest, Expense and Operating Cost Assumptions".
    
 
                                       82
<PAGE>   84
 
   
     (vi)  The unaudited pro-forma combined statement of operations reflects the
           taxation effect of the above pro-forma adjustments.
    
 
   
     (vii) The unaudited pro-forma financial information reflects the settlement
           of existing indebtedness and the issuance of the AerCo Notes.
           Adjustments to the reduction in indebtedness arise as such reductions
           would not be recorded in respect of the AerCo Notes because of their
           terms and conditions.
    
 
   
     The unaudited pro-forma combined statement of net assets set forth below
gives pro-forma effect to the Transaction as if the Transaction had occurred on
June 30, 1998.
    
 
   
                                  AERCO GROUP
    
 
   
          UNAUDITED PRO-FORMA COMBINED BALANCE SHEET AT JUNE 30, 1998
    
 
   
<TABLE>
<CAPTION>
                                                         AERFI
                                                      TRANSFERRED                                       PRO-FORMA
                                        ALPS 94-1       AIRCRAFT         PRO-FORMA         NOTE 2       COMBINED
                                        30-JUN-98      30-JUN-98       ADJUSTMENTS(2)     REFERENCE     30-JUN-98
                                        ---------     ------------     --------------     ---------     ---------
                                          $M               $M                $M                            $M
<S>                                     <C>           <C>              <C>                <C>           <C>
Current assets
  Cash................................       88             --               (27)             (ii)           61
  Due from AerFi......................       --             24               (24)            (iii)           --
  Accounts receivable.................        2              1                --              (iv)            3
                                          -----          -----             -----                          -----
Total current assets..................       90             25               (51)                            64
Fixed assets
  Aircraft............................      800            179               (27)              (i)          952
                                          -----          -----             -----                          -----
Total assets..........................      890            204               (78)                         1,016
                                          =====          =====             =====                          =====
Liabilities
  Accrued expenses & other
     liabilities......................       47              9               (37)             (iv)           19
  Indebtedness........................      684             40                71               (v)          795
  Indebtedness to AerFi...............      102             48                42               (v)          192
  Provision for maintenance...........       44              6                --                             50
  Security deposits...................       13              3                --                             16
                                          -----          -----             -----                          -----
Total liabilities.....................      890            106                76                          1,072
Shareholders equity...................       --             --                --                             --
Net assets/liabilities................       --             98              (154)                           (56)
                                          -----          -----             -----                          -----
                                            890            204               (78)                         1,016
                                          =====          =====             =====                          =====
</TABLE>
    
 
- ---------------
 
   
(2) Represents the adjustments to the unaudited pro-forma combined balance sheet
     and statement of net assets of ALPS 94-1 and the AerFi Transferred Aircraft
     to account for the Transaction and as if it had occurred on June 30, 1998.
    
 
   
     (i)   Aircraft has been adjusted by $27 million to reflect (a) the
           reduction in the fleet of $66 million to reflect the sale of the
           B767-300ER owned by ALPS 94-1 (in the period between the pricing and
           the closing of the offering) as if the sale had occurred on July 1,
           1997 and (b) the inclusion of all remaining aircraft at the initial
           appraised value of $952 million.
    
 
   
     (ii)  The expected cash balances to be held by AerCo Group on completion of
           the Transaction are $61 million equal to the initial Liquidity
           Reserve Amount of $40 million, accrued expenses of $5 million and
           security deposits of $16 million (as of June 30, 1998). The reduction
           in the cash balance reflects the net cash outflow as a result of the
           refinancing Transaction and reflects the use of the ALPS 94-1 cash to
           repay existing noteholders of ALPS 94-1.
    
 
   
     (iii) The receivable due from AerFi of $24 million corresponds to a portion
           of the indebtedness of the relevant AerFi Transferred Aircraft that
           was repaid to AerFi on completion of the Transaction.
    
 
     (iv) Accounts receivable and accrued expenses and other liabilities reflect
          only the assets and liabilities related to the Initial Aircraft on
          completion of the Transaction.
 
   
     (v)  Adjustments have been made to reflect the settlement of the existing
          indebtedness and the issuance of the AerCo Notes. The resulting
          pro-forma indebtedness of $795 million at June 30, 1998
    
 
                                       83
<PAGE>   85
 
   
        reflects the new debt profile of the Notes net of capitalized funding
        costs of $5 million. Indebtedness to AerFi of $192 million reflects
        Subclass D-1 and Subclass E-1 Notes.
    
 
   
     The application of the proceeds from the issuance of the AerCo Notes on a
proforma basis may be summarised as follows:
    
 
   
<TABLE>
<CAPTION>
                                                                 $M      $M
                                                                ----    ----
<S>                                                             <C>     <C>
PROCEEDS ON ISSUE OF NOTES
A - C Notes (net)...........................................     795
D & E Notes.................................................     192
                                                                ----
                                                                         987
SETTLEMENT OF INDEBTEDNESS
Indebtedness to AerFi.......................................    (150)
Indebtedness................................................    (724)
                                                                ----
                                                                        (874)
OTHER MOVEMENTS
Receipt of amounts due from AerFi...........................      24
Net disposal of aircraft....................................      27
Settlement of accounts payable..............................     (37
Movement in net liabilities -- Transfer to AerFi............    (154)
                                                                ----
                                                                        (140)
                                                                        ----
                                                                         (27)
                                                                        ----
NET MOVEMENT IN CASH
Opening cash ALPS 94-1......................................      88
Closing Cash AerCo Combined.................................     (61)
                                                                ----
Proforma decrease in cash...................................              27
                                                                ----    ----
</TABLE>
    
 
RECONCILIATION OF PRO-FORMA COMBINED FINANCIAL INFORMATION AS STATED IN
ACCORDANCE WITH
U.K. GAAP TO PRO-FORMA COMBINED FINANCIAL INFORMATION IN ACCORDANCE WITH U.S.
GAAP
 
     The unaudited pro-forma combined financial information is prepared in
accordance with U.K. GAAP which differs in certain significant respects from
U.S. GAAP. The principal differences are set out below:
 
   
                                  AERCO GROUP
    
 
   
UNAUDITED PRO-FORMA COMBINED STATEMENT OF OPERATIONS FOR THE YEAR ENDED JUNE 30,
                                      1998
    
 
   
<TABLE>
<CAPTION>
                                            U.K. GAAP                                      U.S. GAAP
                                            PRO-FORMA                                      PRO-FORMA
                                            COMBINED         U.S. GAAP       NOTE 3        COMBINED
                                          JUNE 30, 1998    ADJUSTMENT(3)    REFERENCE    JUNE 30, 1998
                                          -------------    -------------    ---------    -------------
                                             $M                 $M                            $M
<S>                                       <C>              <C>              <C>          <C>
Revenues
  Aircraft leasing....................          115               --                           115
Expenses
  Depreciation........................          (42)               2            (i)            (40)
  Net interest expense................          (81)              --                           (81)
  Other expenses......................          (13)              --                           (13)
                                              -----            -----                         -----
Total expenses........................         (136)               2                          (134)
                                              =====            =====                         =====
Net loss before tax...................          (21)               2                           (19)
  Benefit for taxes...................            2               --                             2
                                              -----            -----                         -----
Net loss for the year.................          (19)               2                           (17)
                                              =====            =====                         =====
</TABLE>
    
 
                                       84
<PAGE>   86
 
   
                                  AERCO GROUP
    
 
   
          UNAUDITED PRO-FORMA COMBINED BALANCE SHEET AT JUNE 30, 1998
    
 
   
<TABLE>
<CAPTION>
                                               U.K. GAAP                                      U.S. GAAP
                                               PRO-FORMA                                      PRO-FORMA
                                               COMBINED         U.S. GAAP       NOTE 3        COMBINED
                                             JUNE 30, 1998    ADJUSTMENT(3)    REFERENCE    JUNE 30, 1998
                                             -------------    -------------    ---------    -------------
                                                $M                 $M                            $M
<S>                                          <C>              <C>              <C>          <C>
Current assets
  Cash...................................           61               --                            61
  Accounts receivable....................            3               --                             3
  Deferred financing costs...............           --                5           (ii)              5
                                                 -----            -----                         -----
Total current assets.....................           64                5                            69
Fixed assets
  Aircraft...............................          952             (141)           (i)            811
                                                 -----            -----                         -----
Total assets.............................        1,016             (136)                          880
                                                 =====            =====                         =====
Liabilities
  Accrued expenses and other
     liabilities.........................           19               --                            19
  Indebtedness...........................          795                5           (ii)            800
  Indebtedness to AerFi..................          192               --                           192
  Provision for maintenance..............           50               --                            50
  Security deposits......................           16               --                            16
                                                 -----            -----                         -----
Total liabilities........................        1,072                5                         1,077
SHAREHOLDERS EQUITY
  Ordinary shares........................           --               --                            --
  Accumulated deficit....................          (56)            (141)                         (197)
                                                 -----            -----                         -----
                                                 1,016             (136)                          880
                                                 =====            =====                         =====
</TABLE>
    
 
- ---------------
 
(3) The U.S. GAAP adjustments in the Unaudited Pro-Forma Combined Financial
    Information relate primarily to the accounting treatment of the following:
 
   
     (i)   Under U.K. GAAP, the initial aircraft are included at their appraised
           value at July 1, 1997 and depreciated from that date. For U.S. GAAP
           purposes, transfer of assets and liabilities between ALPS 94-1, AerCo
           and AerFi have been accounted for on a historical cost basis because
           all such transfers of assets and liabilities are among entities
           within a single consolidated group. The difference between the
           appraised value at March 1, 1998 and the historical cost is deemed a
           distribution to AerFi which results in a negative charge to
           shareholders equity.
    
 
   
     (ii)  Under U.K. GAAP the capitalized funding costs of completing the
           Transaction are disclosed as a reduction against the Class A-C Note
           indebtedness. Under U.S. GAAP the capitalized funding costs are
           disclosed separately as deferred financing costs.
    
 
                                       85
<PAGE>   87
 
     SELECTED RATIOS(1)(2)
 
   
<TABLE>
<CAPTION>
                                                                 YEAR ENDED
                                                                JUNE 30, 1998
                                                                -------------
                                                                 (UNAUDITED)
<S>                                                             <C>
U.K. GAAP
Pro-forma combined Ratio of earnings to fixed charges(3)....        0.741
U.S. GAAP
Pro-forma combined Ratio of earnings to fixed charges(3)....        0.765
</TABLE>
    
 
- ---------------
 
(1) For a discussion of the differences between U.S. GAAP and U.K. GAAP in
     respect of the unaudited pro-forma combined financial information, see
     reconciliation of income as stated in accordance with U.K. GAAP to income
     in accordance with U.S. GAAP set forth above.
 
   
(2) Earnings include pretax income from continuing operations plus fixed
     charges. Fixed charges are the total of (a) interest, whether expensed or
     capitalized, (b) amortization of debt expense and discount or premium
     relating to any indebtedness, whether expensed or capitalized and (c) such
     portion of rental expense as can be demonstrated to be representative of
     the interest factor in the particular expense.
    
 
   
(3) A ratio of less than one indicates that earnings are inadequate to cover
     fixed charges. The amount by which fixed charges exceeded earnings for the
     year ended June 30, 1998 was (a) $21 million under U.K. GAAP and (b) $19
     million under U.S. GAAP.
    
 
                                       86
<PAGE>   88
 
                            DESCRIPTION OF THE NOTES
 
   
     The following description is a summary of the provisions of the Notes, the
indenture, the security trust agreement, the cash management agreement and other
agreements. It does not restate these agreements in their entirety. We urge you
to read the indenture and the security trust agreement because these agreements
define your rights as holders of the Notes. We have filed these agreements and
the servicing agreement, the administrative agency agreement and the cash
management agreement as exhibits to the registration statement which includes
this prospectus. The following discussion uses defined terms that appear in the
indenture and other transaction agreements. You should refer to Appendix 1 for
an index showing the definitions of these terms as they appear in this
prospectus.
    
 
GENERAL
 
   
     We will issue the New Notes under the Indenture. The indenture will be
qualified under the Trust Indenture Act of 1939, as amended, upon effectiveness
of the registration statement. Bankers Trust Company is the trustee under the
Indenture.
    
 
   
     The terms of the New Notes will be identical to the Old Notes, except for
transfer restrictions, registration rights and increased interest rate
provisions that appear only in the Old Notes.
    
 
   
     The Notes are solely obligations of AerCo and are not secured by the
aircraft. The Notes do not represent obligations of any lessee, AerFi, the
trustee or Babcock & Brown.
    
 
     RATINGS
 
   
     Each subclass of Notes is rated as of the date of this prospectus as
follows:
    
 
<TABLE>
<CAPTION>
                                                                       RATING AGENCIES
                                                             -----------------------------------
                                                             MOODY'S    STANDARD & POOR'S    DCR
                                                             -------    -----------------    ---
<S>                                                          <C>        <C>                  <C>
Subclass A-1 Notes.......................................      Aa2              AA            AA
Subclass A-2 Notes.......................................      Aa2              AA            AA
Subclass B-1 Notes.......................................       A2               A             A
Subclass C-1 Notes.......................................       --             BBB           BBB
</TABLE>
 
   
     The ratings of the Notes address the likelihood of the timely payment of
interest and the ultimate payment of principal and premium, if any, on the
Notes. The rating agencies have not rated our ability to pay Step-Up Interest or
principal in full on any subclass of the Notes on the Expected Final Payment
Date (or on any other date prior to the Final Maturity Date). The ratings do not
address the imposition of any withholding tax on any payments under the leases,
the Notes or otherwise.
    
 
   
     A rating is not a recommendation to buy, sell or hold Notes because the
ratings do not comment as to market price or suitability for a particular
investor and may be subject to revision or withdrawal at any time by the
assigning rating agency. If a rating agency lowers, suspends or withdraws its
rating of any subclass of Notes, no person or other entity has an obligation to
support AerCo's obligations under the Notes in any way.
    
 
FORM
 
     GLOBAL NOTES
 
   
     The New Notes will be represented by global notes, each of which will be
issued in bearer form only. The global notes will be deposited with the
book-entry depositary. The book-entry depositary will issue to DTC or its
nominee certificateless depositary interests for each subclass of the New Notes,
representing the principal amount of the Global Note for the subclass. Interests
in the New Notes will therefore be shown only on, and transfers of book-entry
interests will be effected only through, records maintained in book-entry form
by DTC or its nominee and its participants (including Euroclear and Cedel). You
should refer to "Book-Entry Registration, Global Clearance and Settlement" for a
description of book-entry interests in the New Notes may be held and transferred
and new payments on them will be distributed.
    
 
                                       87
<PAGE>   89
 
     DEFINITIVE NOTES
 
   
     You will receive definitive Notes in registered form without interest
coupons in exchange for your book-entry interests only if:
    
 
   
     -  DTC notifies the book-entry depositary that it is not willing or able to
       act as depositary for the book-entry interests and the book-entry
       depositary does not appoint a successor at AerCo's request within 90 days
       of DTC's notice
    
 
   
     -  AerCo notifies the trustee that the book-entry depositary is no longer
       willing or able to act as book-entry depositary and AerCo and the trustee
       do not appoint a qualified successor within 90 days of AerCo's notice or
    
 
   
     -  after an Event of Default has occurred with respect to any class of
       Notes, holders representing 51% or more of the outstanding principal
       balance of any subclass within that class notify AerCo, the trustee, the
       book-entry depositary and DTC that continuing a book-entry system through
       DTC is no longer in their interest.
    
 
   
     If any of these events occurs, the trustee will notify the relevant holders
and will arrange for definitive Notes to be issued in exchange for the holders'
book-entry interests.
    
 
   
     You should be aware that, under current Irish tax law, the holder of a
definitive Note may become subject to Irish income tax (currently 24%) which
will be withheld on any payments of interest on the definitive notes as set
forth under "Tax Considerations -- Irish Tax Considerations". If definitive
notes are issued, AerCo will have no obligation to pay to any holder any
additional amounts for any Irish or other tax.
    
 
   
     Distributions of interest, principal and any premium on any definitive
Notes will be made by the trustee or a paying agent directly to holders of
definitive Notes in whose names the definitive Notes were registered at the
close of business on the record date. Such distributions will be made by check
mailed to the address of such holder as it appears on the register maintained by
the trustee. A Noteholder holding definitive Notes representing at least
$1,000,000 of the principal balance of any subclass may apply to have
distributions paid by wire transfer to its account at a financial institution in
New York, New York. The final payment on any such definitive Notes, however,
will be made only upon presentation and surrender of such definitive Notes at
the office or agency, specified in the notice of final distribution to
Noteholders.
    
 
   
     Definitive Notes will be freely transferable and exchangeable for
definitive Notes of the same subclass at the office of the trustee or the
offices of the co-transfer agent and the co-registrar in Luxembourg. No service
charge will be imposed for any registration of transfer or exchange, but payment
of a sum sufficient to cover any tax or other governmental charge may be
required.
    
 
   
     A Note that is mutilated, destroyed, lost or stolen may be exchanged or
replaced, at the offices of the trustee or of the co-transfer agent and the
co-registrar in Luxembourg upon presentation of the Note or satisfactory
evidence of destruction, loss or theft. An indemnity satisfactory to the trustee
or the co-transfer agent and co-registrar may be required at the expense of the
noteholder before a replacement Note will be issued. The noteholder will be
required to pay any tax or other governmental charge imposed in connection with
such exchange or replacement and any other expenses (including the fees and
expenses of the trustee and the co-transfer agent and co-registrar) connected
therewith.
    
 
   
PAYMENTS AND DISTRIBUTIONS
    
 
   
     On each payment date, the trustee will pay (or will instruct a paying agent
appointed in Luxembourg to pay) to the Noteholders all payments of interest,
principal and any premium on the Notes of each subclass, so long as the trustee
or paying agent confirms that it has received the payment by 1:00 p.m. (New York
time) on the payment date. If the trustee or the paying agent confirms receipt
of the payment after that time on the payment date, then it will make the
payment to the Noteholders on the next business day after the business day it
received the payment. Each payment on any payment date other than the final
payment date with respect to any subclass of Notes will be made by the Trustee
or paying agent to the Noteholders as of the record date immediately preceding
such payment date. The final distribution with respect to any Note,
    
                                       88
<PAGE>   90
 
   
however, will be made only upon presentation and surrender of such Note by the
Noteholder or its agent (including any holder in street name) at the office or
agency of the Trustee or paying agent. So long as the Notes are listed on the
Luxembourg Stock Exchange, AerCo must appoint and maintain a paying agent in
Luxembourg.
    
 
   
     The following table sets forth the expected weighted average life, the
Expected Final Payment Date and the Final Maturity Date for each subclass of
Notes.
    
 
          EXPECTED WEIGHTED AVERAGE LIFE, EXPECTED FINAL PAYMENT DATES
                     AND FINAL MATURITY DATES OF THE NOTES
 
<TABLE>
<CAPTION>
                                              EXPECTED
                                              WEIGHTED
                                            AVERAGE LIFE     EXPECTED FINAL
SUBCLASS OF NOTES                             IN YEARS        PAYMENT DATE       FINAL MATURITY DATE
- -----------------                           ------------    -----------------    -------------------
<S>                                         <C>             <C>                  <C>
Subclass A-1............................         2.0          July 15, 2000         July 15, 2023
Subclass A-2............................         3.8        December 15, 2005       July 15, 2023
Subclass B-1............................         7.7          July 15, 2013         July 15, 2023
Subclass C-1............................        10.5          July 15, 2013         July 15, 2023
</TABLE>
 
   
     The Expected Final Payment Date for each subclass of Notes means the date
on which the final payment of principal of and interest on such subclass of
Notes is expected to be made based on the assumptions we describe below under
"-- Assumptions". The Final Maturity Date for each subclass of Notes means the
date on which all principal not previously paid is due and payable. The actual
final payment date for each subclass of Notes is likely to occur earlier or
later than the Expected Final Payment Date as a result of numerous factors,
including that the Assumptions are unlikely to correspond to actual experience.
AerCo may also redeem or refinance the Notes before their Expected Final Payment
Date.
    
 
   
ASSUMPTIONS
    
 
   
     The assumptions and tables set forth below represent possible revenue
scenarios designed to illustrate the payment characteristics of the Notes. They
are not projections, estimates, forecasts or forward-looking statements. We
developed the tables by fixing certain of the assumptions and by varying other
Assumptions and other factors which affect AerCo's revenues and costs and
expenses. The assumptions do not represent a complete list of factors which may
affect the revenues and costs and expenses of AerCo, but rather indicate those
factors which are likely to have a material effect on AerCo's performance in
future years. More severe stresses than we have included in the table may lead
to payments of principal on the Notes being delayed or decreased or, in certain
cases, an Event of Default.
    
 
   
     You should understand that the following tables are only an illustration of
some of the payment sensitivities of the Notes to market and economic stresses.
We prepared these tables for inclusion in the offering memorandum for the Old
Notes based on information as of May 15, 1998. We have not updated or revised
the information presented to reflect changes occurring after May 15, 1998. For
example, we have sold one of the aircraft (an F100) since that date and LIBOR
rates have also changed since that time. We are not aware of any other changes
since that date that would cause the following data to be an unreliable
illustration of how the payment provisions of the Notes operate. It is highly
likely that actual experience in the future will vary from the assumptions and
the possible revenue scenarios reflected in the tables. The principal factors
that could cause AerCo Group's actual revenues to differ materially from such
scenarios are the stresses we describe below and the risks we describe under
"Risk Factors".
    
 
                                       89
<PAGE>   91
 
     REVENUE ASSUMPTIONS
 
   
     We used assumptions (1) to (12) below to determine the assumed gross
monthly revenue of AerCo Group before interest payments, principal payments,
swap payments, selling, general and administrative expenses and before lost
rental payments and expenditures required due to aircraft downtime, lessee
defaults, aircraft repossession costs, bad debts and operating costs incurred in
the ordinary course of the operating lease business. See Appendix 3 to this
prospectus for further data regarding assumed gross revenue.
    
 
   
     (1)  One month LIBOR remains constant at 5.75% per annum and the U.S.
Treasury Rate used for premium calculations is 5.5%.
    
 
   
     (2)  Six month LIBOR (the most common reference rate for the floating rate
leases) remains constant at 5.75% per annum.
    
 
   
     (3)  Funds on deposit in the Collection Account and any other cash balances
held by AerCo Group earn interest at a rate of one month LIBOR.
    
 
   
     (4)  -  Aircraft coming off-lease in the future are re-leased at a monthly
             rate that is a function of the current contracted monthly lease
             rate as of May 15, 1998 for such aircraft of that age.
    
 
   
        -  Lease rates are assumed to remain constant at the monthly lease rate
           for the first 60% of an aircraft's expected useful life, then
           declining on a straight-line basis to 40% of such lease rate over the
           remainder of its expected useful life.
    
 
   
        -  Any aircraft currently subject to a letter of intent is assumed to be
           leased on the basis of the letter of intent.
    
 
   
        -  All types of aircraft in the portfolio are assumed to have an
           expected useful life of 25 years, except that each of the two DC8-71F
           aircraft are assumed to have an expected useful life of 15 years from
           the date of its conversion to freighter service.
    
 
   
     (5)  Aircraft have no scrap value at the end of their expected useful life.
    
 
   
     (6)  AerCo Group receives all contracted and assumed future payments in
respect of the leases on the due date.
    
 
   
     (7)  Future lease terms are five years.
    
 
   
     (8)  AerCo Group grants no new purchase options to lessees and no existing
purchase options are exercised.
    
 
   
     (9)  AerCo Group grants no new lease termination or extension options to
lessees and no existing termination or extension options are exercised.
    
 
   
     (10) AerCo Group sells no aircraft.
    
 
   
     (11) AerCo Group acquires no additional aircraft.
    
 
   
     (12) AerCo Group does not enter into any tax-related dispositions.
    
 
                                       90
<PAGE>   92
 
   
     Interest, Expense and Operating Cost Assumptions:
    
 
   
     (13) AerCo issues Notes in amounts and interest rates as set forth in the
following table and makes payments according to the order of priorities set
forth under "Description of the Notes -- Payment of Principal and Interest --
Priority of Payments".
    
 
<TABLE>
<CAPTION>
SUBCLASS                                                   AMOUNT       ASSUMED INTEREST RATE
- --------                                                 -----------    ---------------------
                                                         ($MILLIONS)
<S>                                                      <C>            <C>
Subclass A-1.........................................      340.000      1 Month LIBOR + 0.19%
Subclass A-2.........................................      290.000      1 Month LIBOR + 0.32%
Subclass B-1.........................................       85.000      1 Month LIBOR + 0.60%
Subclass C-1.........................................       85.000      1 Month LIBOR + 1.35%
Subclass D-1.........................................       80.000                      8.50%
Subclass E-1.........................................      111.973                          *
                                                           -------
                                                           991.973
                                                           =======
</TABLE>
 
- ---------------
 
   
* The Class E Note Primary Interest Amount is 15%.
    
 
   
     (14) Refinancing Notes are issued and sold on the Expected Final Payment
Date of the Subclass A-1 Notes (and on expected final payment dates of any
Refinancing Notes) with the same priority, interest rate, issuance expenses and
redemption as the Notes being refinanced and with maturities and amortization
schedules paid with the application of the Minimum, Scheduled and Supplemental
Principal Payment Amounts. Issuance expenses are 0.02% per month of the
outstanding principal balance.
    
 
   
     (15) AerCo Group realizes no actual liabilities in respect of contingent
liabilities of ALPS 94-1 or its subsidiaries or any of the AerFi Transferred
Companies.
    
 
   
     (16) The servicer's fees are as described in "Management of AerCo Group --
The Servicer". The Servicer's incentive fees are assumed to be 1% of aggregate
lease rentals. The administrative agent's fee is as described in "Management of
AerCo Group -- Corporate Management". Other selling, general and administrative
expenses (including fees of the cash manager) in the amount of $2 million per
annum are deducted from gross revenue.
    
 
   
     (17) Gross revenues are reduced each year by 2% to account for operating
costs incurred in the ordinary course of the operating lease business including
insurance expenses, aircraft-related costs and leasing transaction expenses.
    
 
   
     (18) Security deposits, Modification Payments and Subordinated Swap
Payments are zero.
    
 
     Assumed Case Stress Scenario:
 
   
     (19) Gross revenues are reduced by 6% per annum for the following stresses:
lost rental payments and expenditures required because of aircraft downtime
(known in the industry as "aircraft on ground" or "AOG"), lessee defaults,
aircraft repossession costs and bad debts.
    
 
   
     The following stresses are presented for illustrative purposes and only
represent an example of a combination of stresses which result in approximately
a 6% reduction in gross revenues. Other stress combinations could result in
gross revenue reductions which exceed 6%.
    
 
   
<TABLE>
<S>    <C>                                                <C>
A:     Weighted Average Portfolio Turnover: ..........    20% per annum (see Assumption (7))
B:     Average Re-marketing Time: ....................    6 weeks (.115 years)
C:     Weighted Average Default Rate: ................    4% per annum
D:     Average Repossession Time: ....................    18 weeks (.346 years)
E:     Average Repossession Cost: ....................    $650,000 per Aircraft
F:     Weighted Average Bad Debt Expense: ............    1% per annum
</TABLE>
    
 
                                       91
<PAGE>   93
 
     AOG = (A X B) + (C X (B + D))
 
   
     Annual Repossession Expense ("ARE") = C X(E/Average Annual Gross Revenue
per Aircraft))
    
 
   
<TABLE>
<S>    <C>                                                             <C>
       AOG = (20% X .115 yrs) + (4% X (.115 yrs + .346 yrs)).......     4.2%
       ARE = (4% X 21%)............................................     0.8
       Bad Debt Expense............................................    +1.0
                                                                       -----
       Stress Related Gross Revenue Reduction......................     6.0%
       Operating costs (see Assumption (17)).......................    +2.0
                                                                       -----
       Gross Revenue Reduction in the Assumed Case.................     8.0%
                                                                       =====
</TABLE>
    
 
   
     Increasing the above stresses would result in a greater reduction in annual
gross revenues. The following table shows the effect upon gross revenues of
doubling the severity of each stress (other than average repossession cost)
outlined in the above example (in each case holding other stresses unchanged).
    
 
<TABLE>
<CAPTION>
                                                                             GROSS REVENUE
STRESS                                                        SEVERITY         REDUCTION
- ------                                                        --------       -------------
<S>                                                         <C>              <C>
Portfolio Turnover......................................    40% per annum        10.3%
Re-marketing Time.......................................    12 weeks             10.8%
Default Rate............................................    8% per annum         10.7%
Repossession Time.......................................    36 weeks              9.4%
Bad Debt Expense........................................    2% per annum          9.0%
</TABLE>
 
   
     Actual experience will likely differ from the Assumptions and the stresses.
Because of this, principal payments on certain Notes will likely occur earlier
or later than assumed. These timing differences may be significant.
    
 
                                       92
<PAGE>   94
 
     PRINCIPAL REPAYMENTS UNDER THE ASSUMED CASE
 
   
     The table below shows, for each payment date presented, the percentage of
the initial outstanding principal balance of the aggregate Class A Notes
(including refinancing Notes) and the Subclass A-1, Subclass A-2, Subclass B-1,
Subclass C-1 and Subclass D-1 Notes expected to be outstanding on the payment
date based on the Assumptions. It is highly unlikely that the Assumptions will
correspond to actual experience. Therefore, principal payments on the Notes may
occur earlier or later than as set forth in the table. AerCo may fail to pay
principal of any subclass of AerCo Notes prior to the final maturity date of
such subclass because it does not have the funds to make the payment according
to the priorities described under "-- Priority of Payments". Such a failure will
not, by itself, be an Event of Default.
    
 
                PERCENT OF INITIAL OUTSTANDING PRINCIPAL BALANCE
                     OF THE NOTES BASED ON THE ASSUMED CASE
 
   
<TABLE>
<CAPTION>
                                                               AGGREGATE CLASS A
                                                               NOTES, INCLUDING
PAYMENT DATE OCCURRING IN JULY                   A-1    A-2    REFINANCING NOTES   B-1    C-1
- ------------------------------                   ----   ----   -----------------   ----   ----
<S>                                              <C>    <C>    <C>                 <C>    <C>
1998 (July 15)................................   100%   100%         100%          100%   100%
1999..........................................   100%    87%          94%           96%   100%
2000..........................................     0%    74%          88%           91%    99%
2001..........................................     0%    62%          82%           85%    97%
2002..........................................     0%    48%          76%           79%    95%
2003..........................................     0%    34%          70%           72%    92%
2004..........................................     0%    20%          63%           64%    88%
2005..........................................     0%     6%          57%           56%    83%
2006..........................................     0%     0%          50%           48%    76%
2007..........................................     0%     0%          42%           39%    69%
2008..........................................     0%     0%          34%           31%    60%
2009..........................................     0%     0%          27%           24%    51%
2010..........................................     0%     0%          20%           16%    40%
2011..........................................     0%     0%          14%           10%    28%
2012..........................................     0%     0%           8%            4%    15%
2013..........................................     0%     0%           4%            0%     0%
2014..........................................     0%     0%           0%            0%     0%
Weighted Average Life.........................    2.0    3.8          7.8           7.7   10.5
</TABLE>
    
 
- ---------------
 
   
The weighted average life of a Note equals:
    
 
   
     P/I, where
    
 
   
     P =  the sum of the following amounts calculated for each payment date:
        (A)-(Y), where
    
 
   
        A = principal amount that is assumed to be paid on the payment date
    
 
   
        Y = number of years from the date the Note was issued to the payment
             date
    
 
   
     I =  the initial principal balance of the Note.
    
 
                                       93
<PAGE>   95
 
          DECLINING BALANCES OF THE NOTES AND ASSUMED PORTFOLIO VALUE
                           BASED ON THE ASSUMED CASE
 
                                      LOGO
 
   
     In each of the following tables, "ASSUMED MATURITY" means the period
(expressed in years) from July 15, 1998 through the Expected Final Payment Date
of the relevant Notes.
    
 
     EFFECT OF INABILITY TO REFINANCE SUBCLASS A-1 NOTES
 
   
     The table below is based on the Assumptions, except that we have assumed
that no refinancing Notes are issued. If no refinancings occur, the assumed
maturities ("EXP") and weighted average lives ("AVG") of the Notes would be as
set forth below.
    
 
             ASSUMED MATURITIES AND WEIGHTED AVERAGE LIVES OF NOTES
 
<TABLE>
<CAPTION>
                                                                      ASSUMED MATURITY/
                                                                    WEIGHTED AVERAGE LIFE
                                                              ----------------------------------
                                                               ASSUMED CASE     NO REFINANCINGS
                                                              --------------    ----------------
                                                               EXP      AVG      EXP       AVG
                                                              -----    -----    ------    ------
<S>                                                           <C>      <C>      <C>       <C>
Subclass A-1..............................................      2.0      2.0     15.8      11.3
Subclass A-2..............................................      7.4      3.8      7.4       3.8
Subclass B-1..............................................     15.0      7.7     15.0       7.7
Subclass C-1..............................................     15.0     10.5     15.0      10.5
</TABLE>
 
   
     MINIMUM REVENUE PERCENTAGE REQUIRED TO REPAY NOTES
    
 
   
     The table below shows the minimum percentage of gross revenue that will be
necessary to repay all interest and principal on each subclass of Notes by their
respective final maturity dates. If AerCo Group received actual revenues below
the percentages of gross revenue indicated below and all of the other
Assumptions occurred, AerCo would be unable to make the required payments on the
Notes, which would constitute an Event of Default.
    
 
                                       94
<PAGE>   96
 
               PERCENTAGE OF GROSS REVENUE NECESSARY TO REPAY THE
          NOTES BY THE APPLICABLE FINAL MATURITY DATE ASSUMING ACTUAL
   EXPERIENCE CORRESPONDS TO THE ASSUMED CASE UNTIL THE BEGINNING OF THE YEAR
                                     STATED
 
<TABLE>
<CAPTION>
                                                       JULY 15, 1998    YEAR 3    YEAR 6    YEAR 10
                                                       -------------    ------    ------    -------
<S>                                                    <C>              <C>       <C>       <C>
Aggregate Class A Notes............................        58.4%        57.4%     54.6%      48.7%
Subclass B-1 Notes.................................        65.8%        64.4%     60.8%      53.1%
Subclass C-1 Notes.................................        74.3%        72.9%     70.3%      61.2%
</TABLE>
 
     EFFECT OF A PERMANENT CHANGE IN GROSS REVENUE
 
   
     We have prepared the tables below based on the Assumptions, except that we
have varied the revenue received by AerCo Group from gross revenue by the
indicated percentages, beginning in years 3 and 6. If AerCo Group received
actual revenues as indicated below and all of the other Assumptions occurred,
then the assumed maturities and weighted average lives of the relevant
subclasses of Notes would be as set forth below.
    
 
             ASSUMED MATURITIES AND WEIGHTED AVERAGE LIVES OF NOTES
       ASSUMING A PERMANENT CHANGE IN GROSS REVENUE, BEGINNING IN YEAR 3
 
<TABLE>
<CAPTION>
                                                        PERMANENT CHANGE IN GROSS REVENUE
                                          +10%           0%           -8%*          -15%          -20%
                                       -----------   -----------   -----------   -----------   -----------
                                       EXP    AVG    EXP    AVG    EXP    AVG    EXP    AVG    EXP    AVG
                                       ----   ----   ----   ----   ----   ----   ----   ----   ----   ----
<S>                                    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Subclass A-1.........................   2.0    2.0    2.0    2.0    2.0    2.0    2.0    2.0    2.0    2.0
Subclass A-2.........................   6.3    3.4    7.4    3.8    7.4    3.8    8.5    3.9    8.5    4.3
Subclass B-1.........................  12.0    6.6   14.8    7.7   15.0    7.7   15.0    7.7   18.5    7.9
Subclass C-1.........................  12.9   10.1   15.0   10.5   15.0   10.5   15.0   10.5   19.8   13.6
</TABLE>
 
- ---------------
 
* Assumed case
 
             ASSUMED MATURITIES AND WEIGHTED AVERAGE LIVES OF NOTES
       ASSUMING A PERMANENT CHANGE IN GROSS REVENUE, BEGINNING IN YEAR 6
 
<TABLE>
<CAPTION>
                                                        PERMANENT CHANGE IN GROSS REVENUE
                                          +10%           0%           -8%*          -15%          -20%
                                       -----------   -----------   -----------   -----------   -----------
                                       EXP    AVG    EXP    AVG    EXP    AVG    EXP    AVG    EXP    AVG
                                       ----   ----   ----   ----   ----   ----   ----   ----   ----   ----
<S>                                    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Subclass A-1.........................   2.0    2.0    2.0    2.0    2.0    2.0    2.0    2.0    2.0    2.0
Subclass A-2.........................   7.1    3.8    7.4    3.8    7.4    3.8    8.2    3.8    8.5    3.9
Subclass B-1.........................  12.0    6.7   14.8    7.7   15.0    7.7   15.0    7.7   15.0    7.7
Subclass C-1.........................  14.0   10.4   15.0   10.5   15.0   10.5   15.0   10.5   16.0   11.0
</TABLE>
 
- ---------------
 
* Assumed case
 
                                       95
<PAGE>   97
 
     EFFECT OF PERMANENT DECLINE IN PORTFOLIO VALUE
 
   
     If the value of the portfolio, as adjusted for our appraisals, becomes
significantly less than the value of the portfolio based on the Assumptions, the
Scheduled Principal Payment Amount payable to holders of the Class A Notes may
be increased. You should refer to "-- Principal Amortization" for a description
of how these amounts are determined. Payment of this increased amount may
shorten the weighted average lives of the Class A Notes and lengthen the
weighted average lives of the subclasses of Notes that rank behind the Class A
Notes in priority of payment. The following tables show the assumed maturity and
weighted average life of each subclass of Notes if the adjusted portfolio value
permanently declined to a given percentage of the assumed portfolio value,
beginning in years 1 and 5.
    
 
             ASSUMED MATURITIES AND WEIGHTED AVERAGE LIVES OF NOTES
      ASSUMING A PERMANENT CHANGE IN PORTFOLIO VALUE, BEGINNING IN YEAR 1
 
<TABLE>
<CAPTION>
                                                        ADJUSTED PORTFOLIO VALUE AS PERCENTAGE OF
                                                      EXPECTED PORTFOLIO VALUE BEGINNING IN YEAR 1
                                                  -----------------------------------------------------
                                                     100%*          90%           80%           70%
                                                  -----------   -----------   -----------   -----------
                                                  EXP    AVG    EXP    AVG    EXP    AVG    EXP    AVG
                                                  ----   ----   ----   ----   ----   ----   ----   ----
<S>                                               <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Subclass A-1....................................   2.0    2.0    2.0    2.0    2.0    2.0    2.0    2.0
Subclass A-2....................................   7.4    3.8    7.4    3.8    6.8    3.3    6.0    3.2
Subclass B-1....................................  15.0    7.7   15.0    7.7   15.0    7.7   15.0    7.3
Subclass C-1....................................  15.0   10.5   15.0   10.5   15.0   10.6   15.0   10.8
</TABLE>
 
- ---------------
 
* Assumed Case
 
             ASSUMED MATURITIES AND WEIGHTED AVERAGE LIVES OF NOTES
      ASSUMING A PERMANENT CHANGE IN PORTFOLIO VALUE, BEGINNING IN YEAR 5
 
<TABLE>
<CAPTION>
                                                        ADJUSTED PORTFOLIO VALUE AS PERCENTAGE OF
                                                      EXPECTED PORTFOLIO VALUE BEGINNING IN YEAR 5
                                                  -----------------------------------------------------
                                                     100%*          90%           80%           70%
                                                  -----------   -----------   -----------   -----------
                                                  EXP    AVG    EXP    AVG    EXP    AVG    EXP    AVG
                                                  ----   ----   ----   ----   ----   ----   ----   ----
<S>                                               <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Subclass A-1....................................   2.0    2.0    2.0    2.0    2.0    2.0    2.0    2.0
Subclass A-2....................................   7.4    3.8    7.4    3.8    6.8    3.6    6.6    3.6
Subclass B-1....................................  15.0    7.7   15.0    7.7   15.0    7.8   15.0    7.8
Subclass C-1....................................  15.0   10.5   15.0   10.5   15.0   10.6   15.0   10.9
</TABLE>
 
- ---------------
 
* Assumed Case
 
     EFFECT OF CYCLICAL VARIATIONS IN GROSS REVENUE AND PORTFOLIO VALUE --
"RECESSION SCENARIOS"
 
   
     Historically, the aviation industry has experienced cyclical swings in the
supply and demand for aircraft. Operating lease companies, such as members of
AerCo Group, would be negatively affected by a decline in the demand for
aircraft. We have assumed that such a decline in demand or "RECESSION" (as used
in this discussion) will result in a decline in aircraft values and an increase
in defaults and downtime, and a decline in operating lease rates. In that case,
gross revenues would decline.
    
 
   
     We have prepared the following tables to show the effect on assumed
maturities and weighted average lives of the Subclass B-1 and Subclass C-1 Notes
if recessions of different lengths were to occur in the future. In preparing the
following tables, we have assumed that a recession would have the following
effect on the operations of AerCo Group:
    
 
   
     -  Aircraft values would fall on the first day of the recession to a given
        percentage of the assumed portfolio value. This decrease would trigger
        an increase in Scheduled Principal Payment Amounts being paid if amounts
        are available.
    
 
                                       96
<PAGE>   98
 
   
     - After a period of two years following the first day of the recession,
       gross revenues fall by a given percentage as aircraft are re-leased or
       lessees default. This would result in less cash flow being available to
       make payments of interest and principal on the Notes.
    
 
   
     - The recession lasts a given period of time. Afterwards, the adjusted
       portfolio value returns to the assumed portfolio value on the first day
       after the recession. Two years following the end of the recession, gross
       revenues return to the assumed case.
    
 
   
     - Actual experience will likely differ from the assumptions we have used in
       preparing the following tables. Specifically, we can give no assurance
       that periods of weak traffic growth and lower demand for aircraft will be
       followed by periods of strong growth and high demand for aircraft nor can
       it be assured that following a recession aircraft values and gross
       revenues will return to assumed case levels. Because actual experience
       will likely differ from these assumptions, the actual maturities and
       weighted average lives of the Notes will likely differ from what is shown
       in the tables below.
    
 
         ASSUMED MATURITIES AND WEIGHTED AVERAGE LIVES OF SUBCLASS B-1
                 NOTES ASSUMING A RECESSION LASTING THREE YEARS
 
<TABLE>
<S>                                                    <C>             <C>             <C>             <C>
DECLINE IN GROSS REVENUES.....................           0%              8%*             10%             20%
ADJUSTED PORTFOLIO VALUE AS A PERCENTAGE OF
  ASSUMED PORTFOLIO VALUE.....................          100%            100%*            90%             80%
</TABLE>
 
<TABLE>
<CAPTION>
                                                            EXP    AVG    EXP    AVG    EXP    AVG    EXP    AVG
                                                            ----   ----   ----   ----   ----   ----   ----   ----
<S>                                 <C>   <C>               <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Recession begins at start of
  Year...........................     1   (July 15, 1998)   15.0    7.7   15.0    7.7   15.0    7.7   15.0    7.7
                                      3                     15.0    7.7   15.0    7.7   15.0    7.7   15.0    7.7
                                      5                     15.0    7.7   15.0    7.7   15.0    7.7   15.0    7.8
                                     10                     15.0    7.7   15.0    7.7   15.0    7.7   15.0    7.7
</TABLE>
 
- ---------------
 
* Assumed case
 
         ASSUMED MATURITIES AND WEIGHTED AVERAGE LIVES OF SUBCLASS B-1
                 NOTES ASSUMING A RECESSION LASTING FIVE YEARS
 
<TABLE>
<S>                                                    <C>             <C>             <C>             <C>
DECLINE IN GROSS REVENUES.....................           0%              8%*             10%             20%
ADJUSTED PORTFOLIO VALUE AS A PERCENTAGE OF
  ASSUMED PORTFOLIO VALUE.....................          100%            100%*            90%             80%
</TABLE>
 
<TABLE>
<CAPTION>
                                                            EXP    AVG    EXP    AVG    EXP    AVG    EXP    AVG
                                                            ----   ----   ----   ----   ----   ----   ----   ----
<S>                                 <C>   <C>               <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Recession begins at start of
  Year...........................     1   (July 15, 1998)   15.0    7.7   15.0    7.7   15.0    7.7   15.0    7.8
                                      3                     15.0    7.7   15.0    7.7   15.0    7.7   15.0    7.9
                                      5                     15.0    7.7   15.0    7.7   15.0    7.7   15.0    7.9
                                     10                     14.8    7.7   15.0    7.7   15.0    7.7   15.0    7.7
</TABLE>
 
- ---------------
 
* Assumed case
 
         ASSUMED MATURITIES AND WEIGHTED AVERAGE LIVES OF SUBCLASS C-1
                 NOTES ASSUMING A RECESSION LASTING THREE YEARS
 
<TABLE>
<S>                                                    <C>             <C>             <C>             <C>
DECLINE IN GROSS REVENUES.....................           0%              8%*             10%             20%
ADJUSTED PORTFOLIO VALUE AS A PERCENTAGE OF
  ASSUMED PORTFOLIO VALUE.....................          100%            100%*            90%             80%
</TABLE>
 
                                       97
<PAGE>   99
 
<TABLE>
<CAPTION>
                                                            EXP    AVG    EXP    AVG    EXP    AVG    EXP    AVG
                                                            ----   ----   ----   ----   ----   ----   ----   ----
<S>                                 <C>   <C>               <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Recession begins at start of
  Year...........................     1   (July 15, 1998)   15.0   10.5   15.0   10.5   15.0   10.5   15.0   10.5
                                      3                     15.0   10.5   15.0   10.5   15.0   10.5   15.0   10.6
                                      5                     15.0   10.5   15.0   10.5   15.0   10.5   15.0   10.7
                                     10                     15.0   10.5   15.0   10.5   15.0   10.5   15.0   10.5
</TABLE>
 
- ---------------
 
* Assumed case
 
         ASSUMED MATURITIES AND WEIGHTED AVERAGE LIVES OF SUBCLASS C-1
                 NOTES ASSUMING A RECESSION LASTING FIVE YEARS
 
<TABLE>
<S>                                                    <C>             <C>             <C>             <C>
DECLINE IN GROSS REVENUES.....................           0%              8%*             10%             20%
ADJUSTED PORTFOLIO VALUE AS A PERCENTAGE OF
  ASSUMED PORTFOLIO VALUE.....................          100%            100%*            90%             80%
</TABLE>
 
<TABLE>
<CAPTION>
                                                            EXP    AVG    EXP    AVG    EXP    AVG    EXP    AVG
                                                            ----   ----   ----   ----   ----   ----   ----   ----
<S>                                 <C>   <C>               <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Recession begins at start of
  Year...........................     1   (July 15, 1998)   15.0   10.5   15.0   10.5   15.0   10.5   15.0   10.6
                                      3                     15.0   10.5   15.0   10.5   15.0   10.5   15.0   10.8
                                      5                     15.0   10.5   15.0   10.5   15.0   10.5   15.0   10.9
                                     10                     15.0   10.5   15.0   10.5   15.0   10.5   15.0   10.5
</TABLE>
 
- ---------------
 
* Assumed case
 
    EFFECT OF PRINCIPAL ALLOCATION ACCORDING TO THE EXTENDED POOL FACTOR ONLY
    FOR THE SUBCLASS A-2, SUBCLASS B-1, AND SUBCLASS C-1 NOTES
 
   
     If available collections on a payment date are not sufficient to pay the
principal amount that is to be paid on a class of Notes on that payment date
according to the order of priorities, then the Available Collections will be
allocated to the subclasses in that class of Notes as we describe under "--
Principal Amortization -- Allocation of Principal Among Subclasses".
    
 
   
     We have prepared this table to show the effect of this allocation on the
assumed maturities and the weighted average lives of Subclass A-2, Subclass B-1
and Subclass C-1 Notes if:
    
 
   
   -   we issue additional Notes to finance the acquisition of additional
       aircraft BUT
    
 
   
   -   AerCo Group's gross revenues are sufficient only to pay down the
       principal of these subclasses according to paragraph (1) on page [102].
    
 
   
<TABLE>
<CAPTION>
SUBCLASSES OF NOTES                                             EXP.    AVG.
- -------------------                                             ----    ----
<S>                                                             <C>     <C>
Subclass A-2................................................     8.5     4.7
Subclass B-1................................................    16.0     8.7
Subclass C-1................................................    17.0    12.5
</TABLE>
    
 
PAYMENT OF PRINCIPAL AND INTEREST
 
     GENERAL
 
   
     The Notes are direct obligations of AerCo and are not secured by the
aircraft. AerCo's only sources of payment for the Notes and its other
obligations are:
    
 
   
   -   the payments made by the lessees under the leases;
    
 
   
   -   proceeds from any sales or other dispositions of its assets;
    
 
   
   -   net payments to AerCo received under AerCo's swap agreements (and any
       other hedging instruments we may enter into);
    
 
                                       98
<PAGE>   100
 
   
   -   interest earned on the investment of cash balances; and
    
 
   
   -   net cash proceeds received from the sale of refinancing Notes.
    
 
   
     The Notes are subordinated to expenses and other obligations of AerCo Group
according to the order of priorities we described under "-- Priority of
Payments". Each class and subclass of the Notes has the priority given to it
according to the priority of payments in the indenture. AerCo may make no
payment of principal, interest or any premium on any class of Notes unless it
has made the required payments on the relevant payment date on each class of
Notes that ranks prior to that class. The subordination provisions of the
indenture may not be amended or modified unless each swap provider, each holder
of a class of Notes that is affected by the amendment or modification and each
holder of any class of Notes that ranks senior to an affected class. The
priority of the expenses and payments under swap agreements may not be amended
or modified under any circumstances.
    
 
   
     If an Event of Default occurs, then the holders of a class of Notes (except
the Class A Notes) may not give a default notice or exercise any other remedy
until all amounts owed by AerCo under the more senior classes of Notes have been
paid.
    
 
   
     Under the leases, the lessee must make rental and other payments and
Related Collateral payments directly to the rental account held in the name of
the security trustee. This amount will then be transferred, within one business
day of receipt, to the collection account, except for certain limited amounts
that must be left on deposit for local legal reasons. Any amounts received by
AerCo Group which are required to be segregated will be transferred to the
lessee funded account. Unsegregated amounts received by AerCo Group will be
transferred directly to the collection account. On the basis of the Assumptions,
we expect these amounts will be sufficient to pay the principal, interest and
any premium, on the Notes and all other amounts payable by AerCo Group to the
trustee, the swap providers, the service providers and the holders of the Class
D and Class E Notes, in each case when and as due.
    
 
     INTEREST
 
   
     Each Note bears interest on the outstanding principal balance, payable
monthly in arrears on each payment date. An interest accrual period is the
period from and including a payment date and to but excluding the next payment
date. The final interest accrual period for each subclass of Notes will end on
but exclude the Final Maturity Date or the date upon which all principal,
interest and any premium on such subclass of is paid in full. Each subclass of
Notes will bear interest for each interest accrual period at the rate per annum
set forth on the cover page of this prospectus.
    
 
   
     Interest on any subclass of Notes is calculated on the basis of a 360-day
year and the actual number of days elapsed in an interest accrual period.
    
 
   
     If AerCo does not repay the Subclass A-1 Notes in full on or before their
Expected Final Payment Date, additional interest will accrue on the Subclass A-1
Notes at the rate of 0.50% per annum (we refer to this additional interest as
step-up interest "STEP-UP INTEREST"). AerCo may also issue additional Notes or
refinancing Notes that will accrue Step-Up Interest after their Expected Final
Payment Date. Step-Up Interest will be subordinated to other amounts payable on
the Class A, B, C and D Notes, including accrued and unpaid interest, the
Minimum Principal Payment Amount and the Scheduled Principal Payment Amount. The
rating agencies did not rate AerCo's ability to pay Step-Up Interest. So long as
the Notes are listed on the Luxembourg Stock Exchange, AerCo will publish the
amount of Step-Up Interest that is payable in the manner required by the
indenture and the Luxembourg Stock Exchange.
    
 
     REFERENCE AGENCY AGREEMENT
 
   
     For the purpose of calculating the rate of interest payable on the Notes,
AerCo has entered into a reference agency agreement with the trustee, Bankers
Trust Company as reference agent and the cash manager. The reference agent
determines LIBOR for each interest accrual period following the initial interest
accrual period, on a reference date (the date that is two business days before
the payment date on which the interest accrual period begins).
    
                                       99
<PAGE>   101
 
   
     Under the reference agency agreement, the reference agent determines LIBOR
as follows:
    
 
   
     On each reference date, the reference agent will determine LIBOR as the per
annum offered rate for deposits in U.S. dollars for a period of one month that
appears on the display designated as page "3750" on the Telerate Monitor (or
such other page or service as may replace it for the purpose of displaying LIBOR
of major banks for U.S. dollar deposits) at approximately 11:00 a.m. (London
time).
    
 
   
     If this offered rate is replaced by the corresponding rates of more than
one bank, then the determination of LIBOR shall be made on the basis of the
average of the rates (being at least two) that appear. If these rates do not
appear or the Telerate page is unavailable, the reference agent will request
that each of the banks or a substitute reference bank in London provide the
reference agent with its offered quotation to prime banks for dollar deposits in
London for the next interest accrual period as at 11:00 a.m. (London time) on
the reference date. In this case, the floating rate of interest for each
subclass of Notes will be the average of the quotations received (at least two)
plus the applicable interest spread over LIBOR (and Step-Up Interest, if
payable).
    
 
   
     If, one or no reference bank provides a quotation, the reference agent will
select New York City banks who provide quotations for their U.S. dollar lending
rate to leading European banks on the reference date for the next interest
accrual period. In this case, the interest for the next interest accrual period
will be the average of these quotations plus the applicable interest spread over
LIBOR (and Step-Up Interest, if payable). If the banks selected do not provide
these quotations, the interest rate will be the rate that applied to the last
interest accrual period.
    
 
   
     Once it determines the interest rate, the reference agent will calculate
the interest amount for the interest accrual period as:
    
 
   
     (I)(P) X N/360, where
    
 
   
<TABLE>
    <S>  <C>
    I    = interest rate for the interest accrual period
    P    = outstanding principal balance of the subclass at the
         beginning of the interest accrual period, as estimated by
           the reference agent
    N    = number of days in the interest accrual period.
</TABLE>
    
 
   
     The reference agent's determination of LIBOR, the interest rate and the
interest amount for each such subclass of Notes (in the absence of negligence,
wilful default, bad faith or manifest error) will be conclusive and binding upon
all parties.
    
 
   
     The reference agent will give notice of applicable LIBOR, the payment date,
the interest rate for each subclass of Notes for the relevant interest accrual
period and the amount of interest on each subclass of Notes to AerCo, the
listing agent for the Luxembourg Stock Exchange and the cash manager.
Noteholders may obtain such information at the offices of the listing agent or
paying agent in Luxembourg or otherwise in the cash reports provided to
Noteholders by the trustee on the second business day before each payment date
and any other date for distribution of any payments with respect to the Notes.
    
 
   
     If the reference agent does not or is unable to determine the interest rate
and amount for an interest accrual period as described above, the cash manager
will determine such rate of interest or calculate such interest amount in
accordance with the provisions described above.
    
 
   
     AerCo reserves the right to terminate the appointment of the reference
agent at any time on 30 days' notice and to appoint a replacement reference
agent in its place. Notice of any such termination will be given to the holders
of the Notes. The reference agent may not be removed or resign its duties unless
a successor has been appointed.
    
 
     PRINCIPAL AMORTIZATION
 
   
     For each class of Notes, only to the extent that there are sufficient funds
in the collection account, principal will be distributed on each payment date
equal to the sum of the following amounts:
    
 
                                       100
<PAGE>   102
 
   
     -  the Minimum Principal Payment Amount
    
 
   
     -  the Scheduled Principal Payment Amount
    
 
   
     -  the Supplement Principal Payment Amount (only applicable to the Class A
       and Class B Notes)
    
 
   
     -  redeemed principal as described below in paragraphs (21) through (24)
       under "-- Priority of Payments".
    
 
   
     If AerCo issues any additional Notes or refinancing Notes, each issuance
will be a new subclass of the relevant class of Notes.
    
 
   
     MINIMUM PRINCIPAL PAYMENT AMOUNT.  For each class of Notes and the Class D
Notes, the "MINIMUM PRINCIPAL PAYMENT AMOUNT" will equal the difference, if
positive, between the Outstanding Principal Balance of such class and the
Minimum Target Principal Balance for such class on the payment date.
    
 
   
     On each payment date, the "MINIMUM TARGET PRINCIPAL BALANCE" for the Class
A and Class B Notes will equal:
    
 
   
     (MCP) X (APV), where
    
 
   
<TABLE>
    <S>    <C>
    MCP =  the "MINIMUM CLASS PERCENTAGE" as set forth in Appendices 5
           and 6 to this prospectus
    APV =  the "ASSUMED PORTFOLIO VALUE" for the payment date as
           described below.
</TABLE>
    
 
   
In the case of the Class A Note only, IF the outstanding principal balance of
the Class A Notes (including any additional Notes and refinancing Notes) is
greater than the Adjusted Portfolio Value (as described below), THEN the Minimum
Target Principal Balance of the Class A Notes will be equal to the Scheduled
Target Principal Balance of the Class A Notes (as described below). if on any
Payment Date the Outstanding Principal Balance of the Class A Notes (including
Refinancing Notes and Additional Notes) is greater than the Adjusted Portfolio
Value in respect of such Payment Date, then the Minimum Target Principal Balance
of the Class A Notes shall be equal to the Scheduled Target Principal Balance of
the Class A Notes.
    
 
   
     For each payment date, the Minimum Target Principal Balance for the Class C
and Class D Notes is set out in Appendices 7 and 8 to this prospectus.
    
 
   
     For each payment date, the "ASSUMED PORTFOLIO VALUE" for the initial
aircraft will equal the sum of the following products:
    
 
   
     (IAV) X (DF1)/(DF2), where
    
 
   
<TABLE>
    <S>    <C>
    IAV =  the Initial Appraised Value of each aircraft on the relevant
           calculation date
    DF1 =  the depreciation factor for that aircraft on the calculation
           date
    DF2 =  the depreciation factor for that aircraft on July 15, 1998.
</TABLE>
    
 
   
     "INITIAL APPRAISED VALUE" means the average of the base values of each of
the aircraft, determined, in the case of the initial aircraft as of March 1,
1998 and, in the case of any additional aircraft, as of a date not more than six
months prior to the closing date for the issue of the relevant additional notes.
    
 
   
      The depreciation factor equals: (1 - (kn)) X (1 + g)(n) but not less than
zero
    
 
   
     Where, with respect to the initial aircraft:
    
 
   
<TABLE>
         <S>    <C>
         n =    age of the aircraft expressed in years
                                    1
         k =
                -----------------------------------------
                          Expected Useful Life
         g =    0.02
</TABLE>
    
 
   
     The depreciation factors produce a "depreciation curve" that assumes that
the value of an initial aircraft will decline at an accelerating rate as the
aircraft ages. We have used the depreciation factors described above solely for
the purpose of determining repayments of principal of the Notes. They are not
intended to predict
    
 
                                       101
<PAGE>   103
 
   
or conform to actual declines in aircraft values over any period. Furthermore,
variables used to calculate the depreciation factor will change as the
composition of the portfolio changes through acquisitions and sales of
additional aircraft and initial aircraft. Finally, AerCo Group may in the future
apply different depreciation factors or alternative methodologies to express the
assumed decline in values of additional aircraft. In addition, the Minimum Class
Percentages, the Scheduled Class Percentages and the Supplemental Class
Percentages for the Class A and Class B Notes and Minimum Target Principal
Balances and Scheduled Target Principal Balances for the Class C and Class D
Notes will change as additional aircraft are acquired. The Pool Factors and the
Extended Pool Factors for each subclass that are described below will not change
as the composition of the portfolio changes.
    
 
   
     Scheduled Principal Payment Amount.  For each class of Notes and the Class
D Notes, the "SCHEDULED PRINCIPAL PAYMENT AMOUNT" on any payment date will equal
the difference, if positive, between the outstanding principal balance of such
class (after giving effect to any payment of the Minimum Principal Payment
amount for such class) and the Scheduled Target Principal Balance for such
class.
    
 
   
     On each payment date, the "SCHEDULED TARGET PRINCIPAL BALANCE" for the
Class A Notes will equal:
    
 
   
     (SCP) X (APV*), where
 
<TABLE>
    <S>   <C>
    SCP   = the "SCHEDULED CLASS PERCENTAGE" on the payment date (as
          set forth in Appendix 5 to this prospectus)
    APV*  = EITHER the Assumed Portfolio Value on the payment date OR
          105% of the Adjusted Portfolio Value on the payment date,
            WHICHEVER IS LESS.
</TABLE>
    
 
   
     For each payment date the Scheduled Target Principal Balance for the Class
B Notes will equal:
    
 
   
     (SCP) X (APV), where
 
<TABLE>
    <S>  <C>
    SCP  = the Scheduled Class Percentage on the payment date (as set
           forth in Appendix 5)
    APV  = the Assumed Portfolio Value on the payment date.
</TABLE>
    
 
   
     For each payment date, the Scheduled Target Principal Balance of the Class
C and Class D Notes is set out in Appendices 7 and 8 to this prospectus.
    
 
   
     For each payment date, the "ADJUSTED PORTFOLIO VALUE" will equal the sum of
the following amounts for each aircraft in the portfolio:
    
 
   
     (Avg. BV) X (DFI)/(DF2), where
 
<TABLE>
    <S>      <C>
    Avg. BV  = the average base value of the aircraft as determined in
               the most recent appraisal
    DF1      = the depreciation factor for the aircraft on the
               calculation date
    DF2      = the depreciation factor for the aircraft on the date of
               the most recent appraisal.
</TABLE>
    
 
   
     Supplemental Principal Payment Amount.  For the Class A and Class B Notes,
the "SUPPLEMENTAL PRINCIPAL PAYMENT AMOUNT" on any payment date will equal the
difference, if positive, between the outstanding principal balance of such class
(after giving effect to the payment of any Minimum Principal Payment Amount and
Scheduled Principal Payment Amount) and the Supplemental Target Principal
Balance for such class.
    
 
   
     On each payment date, the "SUPPLEMENTAL TARGET PRINCIPAL BALANCE" for the
Class A and Class B Notes will equal:
    
 
   
     (Supp. CP) X (APV), where
 
<TABLE>
    <S>       <C>
    Supp. CP  = the "SUPPLEMENTAL CLASS PERCENTAGE" on the payment date
              (as set forth in Appendices 5 and 6)
    APV       = the Assumed Portfolio Value on the payment date.
</TABLE>
    
 
     ALLOCATION OF PRINCIPAL AMONG SUBCLASSES OF NOTES
 
   
     On the Expected Final Payment Date of the Subclass A-1 Notes, AerCo intends
to refinance 100% of the outstanding principal balance of the Subclass A-1 Notes
by issuing refinancing Notes and selling such refinancing Notes in the capital
markets. Failure to repay any Subclass A-1 Note in full at its Expected Final
Payment Date will not result in an Event of Default.
    
 
                                       102
<PAGE>   104
 
   
     AerCo may also refinance any other subclass of Notes, at any time, at the
Redemption Price that would be payable if AerCo were to have redeemed such Notes
instead. See "-- Refinancing" and "-- Indenture Covenants -- Limitation on
Indebtedness" for a description of the Redemption Price.
    
 
   
     The terms of the Subclass A-2, Subclass B-1, Subclass C-1 and Subclass D-1
Notes will require amortization of their outstanding principal balance before
their Expected Final Payment Dates, if there are funds available in accordance
with the order of priorities set forth under "-- Priority of Payments".
    
 
   
     IF on a payment date, we must pay a principal amount on a class of Notes
according to the order of priorities but the amount of our available collections
is not sufficient to pay the amount payable to all subclasses of that class,
THEN the available amount will be allocated as follows:
    
 
   
     (1)  First, to each subclass in order of the subclass that was issued
          first, the difference, if positive, between the outstanding principal
          balance of each subclass and the following amount:
    
 
   
             (EPF) X (IPB), where
 
<TABLE>
              <S>  <C>
              EPF  = the "EXTENDED POOL FACTOR" for the subclass as set forth
                     in Appendix 10
              IPB  = the initial principal balance for the subclass at the time
                     it was issued.
</TABLE>
    
 
   
        If two or more subclasses were issued on the same date, available
        collections will be applied to each of those subclasses pro rata
        according to the result of the above calculation for the subclass.
    
 
   
     (2)  Second, to each subclass, pro rata according to the amount of but not
          more than the difference, if positive, between the outstanding
          principal balance of each subclass (after giving effect to any payment
          under clause (1) above) and the following amount:
    
 
   
             (PF) X (IPB), where
 
<TABLE>
              <S>  <C>
              PF   = the "POOL FACTOR" for the subclass as set forth in
                     Appendix 9
              IPB  = the initial principal balance of the subclass at the time
                     it was issued.
</TABLE>
    
 
   
     (3)  Third, to each subclass with an Expected Final Payment Date on or
          before the payment date, in order of the earliest issued subclass. If
          there are two or more subclasses that were issued on the same date,
          available collections will be applied to them in order of the subclass
          with the earliest Expected Final Payment Date. If two or more of those
          subclasses have the same Expected Final Payment Date, then available
          collections will be applied pro rata according to the outstanding
          principal balances of the subclasses on the payment date (after any
          payments under clauses (1) and (2) above).
    
 
   
     (4)  Fourth, to each subclass with an Excess Amortization Date on or before
          such payment date, pro rata according to the outstanding principal
          balance of each such subclass (after giving effect to any payment
          under clauses (1), (2) and (3) above) on the payment date.
    
 
   
     (5)  Fifth, to each subclass in order of the earliest Expected Final
          Payment Date. If two or more subclasses have the same Expected Final
          Payment Date, then available collections will be applied pro rata to
          those subclasses according to the outstanding principal balance of the
          subclass on the payment date (after any payments under clauses (1),
          (2) and (3) above).
    
 
     The "EXCESS AMORTIZATION DATE" for each subclass of the Notes and the
Subclass D-1 Notes is as set out below:
 
<TABLE>
<CAPTION>
SUBCLASS OF NOTES                                               EXCESS AMORTIZATION DATE
- -----------------                                               ------------------------
<S>                                                             <C>
Subclass A-1................................................    July 15, 2000
Subclass A-2................................................    August 17, 1998
Subclass B-1................................................    August 17, 1998
Subclass C-1................................................    August 17, 1998
Subclass D-1................................................    July 15, 2010
</TABLE>
 
                                       103
<PAGE>   105
 
     REFINANCING
 
   
     AerCo may repay any subclass of the Notes or the Class D Notes, in whole
but not in part, on any date with the proceeds of the issuance of any
refinancing Note issued in accordance with the "Limitation on Indebtedness"
covenant under the indenture. The amount we will repay in connection with the
refinancing of any subclass of Notes or the Class D Notes will be equal to the
redemption price for such subclass on the refinancing date plus accrued and
unpaid interest.
    
 
   
     At least five days but not more than 30 days before the proposed
refinancing date, the trustee will give notice of the refinancing (a "NOTICE OF
REFINANCING") to each holder of such subclass of Notes or the Class D Notes in
accordance with the notice provisions contained in the indenture. In connection
with any refinancing, AerCo will deposit, in the refinancing account an amount
equal to the redemption price, plus an amount sufficient to pay or provide for
all accrued and unpaid interest as of the refinancing date. Each notice of
refinancing will state.
    
 
   
     -     the applicable refinancing date;
    
 
   
     -     the Redemption Price of the Notes or the Class D Notes to be repaid
           and the amount of accrued but unpaid interest payable;
    
 
   
     -     that Notes or the Class D Notes of the subclass to be repaid must be
           surrendered; and
    
 
   
     -     that, unless AerCo defaults in the payment of the redemption price
           and any accrued and unpaid interest, interest on the subclass of
           Notes or the Class D Notes to be refinanced will cease to accrue on
           and after the refinancing date. Once a notice of refinancing is
           published, each subclass of Notes or the Class D Notes to which it
           applies will become due and payable on the refinancing date at their
           redemption price, together with accrued and unpaid interest.
    
 
     REDEMPTION
 
   
     AerCo may redeem any subclass of the Notes or the Class D Notes out of
available amounts, if any, on any payment date, in whole or in part, at the
redemption price plus accrued but unpaid interest. In addition, AerCo must
required on each payment date to redeem Notes or the Class D Notes to the extent
of any available collections in the manner described in "Principal Amortization"
above and "Priority of Payments" below at the redemption price plus accrued but
unpaid interest. Within each class or subclass of Notes or the Class D Notes
being redeemed in part, the amount of the outstanding principal balance being
prepaid will be applied in each case pro rata among all Notes or the Class D
Notes of such subclass.
    
 
   
     The redemption price on the Subclass A-1, Subclass A-2, Subclass B-1 and
Subclass C-1 Notes will be:
    
 
   
     -  IF THE REDEMPTION IS MADE WITH PROCEEDS FROM REFINANCING NOTES OR FROM
       THIRD PARTIES OR OTHER THAN FROM AVAILABLE COLLECTIONS, the outstanding
       principal balance of the subclass being redeemed multiplied by the
       redemption premium set out in the table below.
    
 
   
     -  IF THE REDEMPTION IS MADE WITH AVAILABLE COLLECTIONS, the outstanding
       principal balance of the subclass being redeemed.
    
 
   
     The redemption price of the Subclass D-1 Notes will equal:
    
 
   
     If AerCo redeems the Subclass D-1 Notes before July 15, 2003, the
redemption price will be EITHER:
    
 
   
     -  the discounted present value of the Scheduled Principal Payments and
       interest from the redemption date to July 15, 2003 PLUS the following
       amount:
    
 
   
       (RP) X (OPB), where
    
 
   
<TABLE>
    <S>   <C>
    RP    = the applicable redemption premium
    OPB   = the assumed outstanding principal balance for July 15,
          2003, discounted to the redemption date at the applicable
            Treasury Yield plus 1.00%
</TABLE>
    
 
                                       104
<PAGE>   106
 
   
     OR
    
 
   
     -  the outstanding principal balance on the redemption date,
    
 
   
     WHICHEVER IS HIGHER
    
 
   
     If AerCo redeems the Subclass D-1 Notes on or after July 15, 2003, the
redemption price will be the applicable redemption premium multiplied by the
outstanding principal balance on the redemption date.
    
 
   
<TABLE>
<CAPTION>
REDEMPTION DATE                                              REDEMPTION PREMIUM
- ---------------                         -------------------------------------------------------------
                                        SUBCLASS     SUBCLASS     SUBCLASS     SUBCLASS     SUBCLASS
                                        A-1 NOTES    A-2 NOTES    B-1 NOTES    C-1 NOTES    D-1 NOTES
                                        ---------    ---------    ---------    ---------    ---------
<S>                                     <C>          <C>          <C>          <C>          <C>
After July 15, 1998...................   100.50%      101.00%      101.50%      102.50%           --
On or after July 15, 1999.............   100.25%      100.75%      101.25%      102.25%           --
On or after July 15, 2000.............   100.00%      100.50%      101.00%      102.00%           --
On or after July 15, 2001.............                100.25%      100.75%      101.75%           --
On or after July 15, 2002.............        --      100.25%      100.50%      101.50%           --
On or after July 15, 2003.............        --      100.25%      100.25%      101.25%      105.25%
On or after July 15, 2004.............        --      100.25%      100.25%      101.00%      104.50%
On or after July 15, 2005.............        --      100.00%      100.25%      100.75%      103.75%
On or after July 15, 2006.............        --           --      100.25%      100.50%      103.00%
On or after July 15, 2007.............        --           --      100.25%      100.25%      102.25%
On or after July 15, 2008.............        --           --      100.25%      100.25%      101.50%
On or after July 15, 2009.............        --           --      100.00%      100.25%      100.75%
On or after July 15, 2010.............        --           --           --      100.25%      100.00%
On or after July 15, 2011.............        --           --           --      100.00%           --
</TABLE>
    
 
     "TREASURY YIELD" means a per annum rate (expressed as a monthly equivalent
yield) determined to be the per annum rate equal to the semiannual yield to
maturity of the 5 3/4% United States Treasury Note maturing on August 15, 2003,
as published in the most recent H.15 (519).
 
   
     "H.15 (519)" means the weekly statistical release with that number or any
successor publication, published by the Board of Governors of the Federal
Reserve System.
    
 
   
     REDEMPTION FOR TAXATION PURPOSES.  All payments of principal, interest and
premium, if any, made by AerCo in respect of the Notes or the Class D Notes or
any inter-company payments supporting the obligations under the Notes or the
Class D Notes will be made without withholding or deduction for or on account of
any present or future taxes or duties of whatever nature unless required by law.
Should such withholding or deduction be required by law, AerCo will not be
obliged to pay any additional amounts in respect of such withholding or
deduction.
    
 
     IF at any time:
 
   
     (a)  AerCo is, or on the next payment date will be, required to make any
          withholding or deduction under the laws or regulations of any
          applicable tax authority with respect to any payment in respect of any
          subclass of Notes or the Class D Notes; or
    
 
   
     (b)  AerCo is or will be subject to any circumstance (whether by reason of
          any law, regulation, regulatory requirement or double-taxation
          convention, or the interpretation or application thereof, or
          otherwise) leading to the imposition of a tax (whether by direct
          assessment or by withholding at source) or other similar imposition by
          any jurisdiction which would:
    
 
                                       105
<PAGE>   107
 
   
        (1)  materially increase the cost to AerCo of making payments in respect
             of any subclass of Notes or the Class D Notes or of complying with
             its obligations under or in connection with the Notes or the Class
             D Notes;
    
 
   
        (2)  materially increase the operating or administrative expenses of
             AerCo or the charitable trust which holds the ordinary share
             capital of AerCo; or
    
 
   
        (3)  otherwise obligate AerCo or any of its subsidiaries to make any
             material payment on, or calculated by reference to, the amount of
             any sum received or receivable by AerCo, or by the cash manager on
             behalf of AerCo as contemplated by the cash management agreement;
    
 
   
THEN AerCo will inform the trustee at such time of any such requirement or
imposition and shall use its or their best efforts to avoid the effect of the
same. AerCo shall take no action to avoid such effects unless each rating agency
has confirmed that such action will not result in the lowering or withdrawal by
it of its current rating of any subclass of AerCo Notes then outstanding.
    
 
   
     IF, after using its best efforts to avoid the adverse effect described
above, THEN AerCo or any of its subsidiaries has not avoided such effects, AerCo
may, at its election, redeem the Notes or the Class D Notes of any or all
subclasses to which such withholding or deduction applies in whole with accrued
and unpaid interest but without premium on any payment date. However, any such
redemptions may not occur more than 30 days prior to such time as the
requirement or imposition described in (a) or (b) above is to become effective.
    
 
   
     METHOD OF REDEMPTION.  If AerCo proposes to redeem any subclass of Notes
with funds other than available collections, at least 20 days but not more than
60 days before the redemption date, the trustee will give notice of such
redemption to each holder of the subclass. If a redemption is of less than all
of the Notes of any subclass, Notes of such subclass to be redeemed will be
repaid principal pro rata, to the extent funds are available in the case of any
redemption in whole (other than a Redemption resulting from taxation reasons),
AerCo will deposit in the defeasance/redemption account the redemption price,
together with an amount sufficient to pay or provide for all of the accrued and
unpaid interest as of the redemption date. If AerCo redeems all or any part of a
subclass of Notes with available collections as required by the priority of
payments, AerCo will send no notice of redemption.
    
 
   
     Each notice of redemption will state
    
 
   
     - the applicable redemption date,
    
 
   
     - the Trustee's arrangements for making payments due,
    
 
   
     - the redemption price of the Notes to be redeemed,
    
 
   
     - in the case of redemptions in whole, that Notes of the subclass to be
       redeemed must be surrendered (which action may be taken by any holder of
       the Notes or its authorized agent) to the trustee to collect the
       redemption price and accrued and unpaid interest on such Notes, and
    
 
   
     - in the case of redemptions in whole, that, unless AerCo defaults in the
       payment of the Redemption Price and any accrued and unpaid interest
       thereon, interest on the subclass of Notes called for redemption will
       cease to accrue on and after the redemption date. Once a notice of
       redemption for a redemption in whole is mailed, each subclass of Notes to
       which it applies will become due and payable on the redemption date at
       their redemption price, together with accrued and unpaid interest
       thereon.
    
 
     DEFEASANCE
 
   
     AerCo at any time may terminate all of its obligations under the Notes and
the indenture (this is known as "LEGAL DEFEASANCE"), except for those relating
to the defeasance trust and obligations to register the transfer or exchange of
the AerCo Notes, to replace mutilated, destroyed, lost or stolen AerCo Notes and
to maintain a register for the AerCo Notes. Also, AerCo at any time may
terminate its obligations under the covenants described under "Indenture
Covenants" and "Operating Covenants" and the events of default described
    
                                       106
<PAGE>   108
 
   
under "Events of Default and Remedies", other than clauses (1), (2), (3), (4)
and (5) (solely with respect to AerCo) set forth under "-- Events of Default and
Remedies" (this is known as "COVENANT DEFEASANCE").
    
 
   
     AerCo may exercise its legal defeasance options even if it has already
exercised the covenant defeasance option. If AerCo exercises its legal
defeasance options, payment of the AerCo Notes may not be accelerated because of
an Event of Default. If AerCo exercises its covenant defeasance options, payment
of the AerCo Notes may not be accelerated because of the events of default
described under "Events of Default and Remedies", other than clauses
(1),(2),(3),(4) and (5) (solely with respect to AerCo) set forth under "--
Events of Default and Remedies".
    
 
   
     In order to exercise either defeasance option, AerCo must irrevocably
deposit in trust with the trustee any combination of cash or obligations of the
U.S. Government, as will be sufficient for the payment of principal, premium (if
any), and interest on the AerCo Notes to redemption or maturity. AerCo must also
comply with other conditions, including delivering to the trustee an opinion of
counsel to the effect that holders of the AerCo Notes (1) will not recognize
income, gain or loss for United States Federal income tax purposes as a result
of the deposit and defeasance and (2) will be subject to United States Federal
income tax on the same amount and in the same manner and at the same times as
would have been the case if the deposit and defeasance had not occurred (and, in
the case of legal defeasance only, the opinion of counsel must be based on a
ruling of the Internal Revenue Service or other change in applicable United
States Federal income tax law).
    
 
     PRIORITY OF PAYMENTS
 
   
     On each payment date, the cash manager will withdraw all amounts on deposit
in the collection account and will distribute them according to the order of
priority set forth below. Any amount below will be paid only if all amounts
ranking senior to that amount are paid in full on the payment date.
    
 
   
     (1)   First, to the expense account or directly to the relevant expense
         payees, an amount equal to the Required Expense Amount;
    
 
   
     (2)   Second, the following amounts pro rata:
    
 
   
        (A) to the holders of each subclass of Class A Notes, all accrued and
             unpaid interest excluding Step-Up Interest, if applicable, on such
             subclass of Class A Notes pro rata according to the amount of
             accrued and unpaid interest on such subclass of Class A Notes; and
    
 
   
        (B)  pro rata, to any swap provider, an amount equal to any payment
             (other than Subordinated Swap Payments) due from AerCo under any
             swap agreement;
    
 
   
     (3)   Third, (1) first, to any persons providing Primary Eligible Credit
         Facilities, any amounts then payable to such persons under the terms of
         their respective Eligible Credit Facilities, and THEN, (2) retain in
         the collection account an amount, if positive, equal to (A) the Minimum
         Liquidity Reserve Amount, less (B) amounts available for drawing under
         any Primary Eligible Credit Facilities;
    
 
   
     (4)   Fourth, to the holders of Class A Notes, in the order of priority by
         subclass set forth under "-- Allocation of Principal Among Subclasses
         of Notes", an amount equal to the Minimum Principal Payment Amount with
         respect to the Class A Notes;
    
 
   
     (5)   Fifth, to the holders of each subclass of Class B Notes, all accrued
         and unpaid interest, excluding Step-Up Interest, if applicable, on such
         subclass of Class B Notes pro rata according to the amount of accrued
         and unpaid interest on such subclass of Class B Notes;
    
 
   
     (6)   Sixth, to the holders of Class B Notes, in the order of priority by
         subclass set forth under "-- Allocation of Principal Among Subclasses
         of Notes", an amount equal to the Minimum Principal Payment Amount with
         respect to the Class B Notes;
    
 
                                       107
<PAGE>   109
 
   
     (7)   Seventh, to the holders of each subclass of Class C Notes, all
         accrued and unpaid interest, excluding Step-Up Interest, if applicable,
         on such subclass of Class C Notes pro rata according to the amount of
         such accrued and unpaid interest on such subclass of Class C Notes;
    
 
   
     (8)   Eighth, to the holders of Class C Notes, in the order of priority by
         subclass set forth under "-- Allocation of Principal Among Subclasses
         of Notes", an amount equal to the Minimum Principal Payment Amount with
         respect to the Class C Notes;
    
 
   
     (9)   Ninth, to the holders of each subclass of Class D Notes, all accrued
         and unpaid interest, excluding Step-Up Interest, if applicable, on such
         subclass of Class D Notes pro rata according to the amount of such
         accrued and unpaid interest on such subclass of Class D Notes;
    
 
   
     (10)  Tenth, to the holders of Class D Notes, in the order of priority by
         subclass set forth under "-- Allocation of Principal Among Subclasses
         of Notes", an amount equal to the Minimum Principal Payment Amount with
         respect to the Class D Notes;
    
 
   
     (11)  Eleventh, (1) first, to any Persons providing any Credit Facilities
         that are not Primary Eligible Credit Facilities, any amounts then
         payable under the terms of their credit facilities and THEN, 2 retain
         in the Collection Account an amount (the "SECOND COLLECTION ACCOUNT"),
         if positive, equal to (A) the Liquidity Reserve Amount less (B) the sum
         of the amount of cash reserved under (3) above plus the amounts
         available for drawing under any Eligible Credit Facilities;
    
 
   
     (12)  Twelfth, to the holders of Class A Notes, in the order of priority by
         subclass set forth under "-- Allocation of Principal Among Subclasses
         of Notes", an amount equal to the Scheduled Principal Payment Amount
         with respect to the Class A Notes;
    
 
   
     (13)  Thirteenth, to the holders of Class B Notes, in the order of priority
         by subclass set forth under "-- Allocation of Principal Among
         Subclasses of Notes", an amount equal to the Scheduled Principal
         Payment Amount with respect to the Class B Notes;
    
 
   
     (14)  Fourteenth, to the holders of Class C Notes, in the order of priority
         by subclass set forth under "-- Allocation of Principal Among
         Subclasses of Notes", an amount equal to the Scheduled Principal
         Payment Amount with respect to the Class C Notes;
    
 
   
     (15)  Fifteenth, to the holders of Class D Notes, in the order of priority
         by subclass set forth under "-- Allocation of Principal Among
         Subclasses of Notes", an amount equal to the Scheduled Principal
         Payment Amount with respect to the Class D Notes;
    
 
   
     (16)  Sixteenth, to the Permitted Accruals balance in the expense account,
         an amount equal to Permitted Accruals in respect of any Modification
         Payments;
    
 
   
     (17)  Seventeenth, to the holders of each subclass of Notes entitled
         thereto, an amount equal to all accrued and unpaid Step-Up Interest on
         such subclass, if any, pro rata according to the amount of such accrued
         and unpaid Step-Up Interest;
    
 
   
     (18)  Eighteenth, to the holders of Class A Notes, in the order of priority
         by subclass set forth under "-- Allocation of Principal Among
         Subclasses of Notes", an amount equal to the Supplemental Principal
         Payment Amount with respect to the Class A Notes;
    
 
   
     (19)  Nineteenth, to the holders of each subclass of the Class E Notes, the
         Class E Note Primary Interest Amount, pro rata according to the amount
         due on each subclass of AerCo Group Class E Notes;
    
 
   
     (20)  Twentieth, to the holders of Class B Notes, in the order of priority
         by subclass set forth under "-- Allocation of Principal Among
         Subclasses of Notes", an amount equal to the Supplemental Principal
         Payment Amount with respect to the Class B Notes;
    
 
   
     (21)  Twenty-first, to the holders of Class A Notes, in the order of
         priority by subclass set forth under "Allocation of Principal Among
         Subclasses of Notes" an amount equal to the redemption price of the
         outstanding principal balance, if any, of the Class A Notes;
    
                                       108
<PAGE>   110
 
   
     (22)  Twenty-second, to the holders of Class B Notes, in the order of
         priority by subclass set forth under "Allocation of Principal Among
         Subclasses of Notes" an amount equal to the redemption price of the
         outstanding principal balance, if any, of the Class B Notes;
    
 
   
     (23)  Twenty-third, to the holders of Class C Notes, in the order of
         priority by subclass set forth under "Allocation of Principal Among
         Subclasses of Notes" an amount equal to the redemption price of the
         outstanding principal balance, if any, of the Class C Notes;
    
 
   
     (24)  Twenty-fourth, to the holders of Class D Notes, in the order of
         priority by subclass set forth under "Allocation of Principal Among
         Subclasses of Notes" an amount equal to the redemption price of the
         outstanding principal balance, if any, of the Class D Notes;
    
 
   
     (25)  Twenty-fifth, pro rata, to swap providers in an amount equal to any
         amounts then payable under the relevant swap agreements which are
         subordinated in accordance with their terms ("SUBORDINATED SWAP
         PAYMENTS");
    
 
   
     (26)  Twenty-sixth, to investors or other persons for obligations incurred
         in connection with Permitted Tax-Related Dispositions, if any, that are
         subordinated in accordance with the terms of the relevant Permitted
         Tax-Related Dispositions an amount equal to the amount of such
         Subordinated Tax-Related Disposition Payments then payable;
    
 
   
     (27)  Twenty-seventh, to the holders of the Class E Notes, an amount equal
         to all accrued and unpaid interest on the Class E Notes and an amount
         equal to the cash portion of the Liquidity Reserve Amount then on
         deposit in the collection account, pro rata according to the amount due
         on each subclass of AerCo Group Class E Notes;
    
 
   
     (28)  Twenty-eighth, to the holders of the Class E Notes, in the order of
         priority by subclass set forth under "-- Allocation of Principal Among
         Subclasses of Notes", an amount equal to the Outstanding Principal
         Balance of the Class E Notes; and
    
 
   
     (29)  Twenty-ninth, to the charitable trust trustee, all remaining amounts.
    
 
     PRIORITY OF PAYMENTS FOLLOWING A DEFAULT NOTICE
 
   
     If a default notice is delivered to AerCo or the cash manager or an Event
of Default described in clause (5) or (6) under "-- Events of Default and
Remedies" occurs and continues, the priority of payments described above will
not apply. Instead, amounts on deposit in the collection account and the expense
account will be applied in the following order of priority.
    
 
   
     (1)   First, to the expense account or directly to the relevant expense
         payees, an amount equal to the Required Expense Amount;
    
 
   
     (2)   Second, pro rata, to the providers of any Primary Eligible Credit
         Facilities, such amounts as are required to make any payments due to
         such providers under their Primary Eligible Credit Facilities;
    
 
   
     (3)   Third, the following amounts. (A) pro rata to the holders of each
         subclass of Class A Notes, all accrued and unpaid interest (including
         Step-Up Interest, if any) on, and all Outstanding principal of, such
         subclass and (B) pro rata to any swap provider, such amounts as are
         required to make any payments (other than Subordinated Swap Payments)
         due to such swap provider under any swap agreement;
    
 
   
     (4)   Fourth, pro rata to the holders of each subclass of Class B Notes,
         all accrued and unpaid interest (including Step-Up Interest, if any) on
         and all outstanding principal of such subclass of Class B Notes;
    
 
   
     (5)   Fifth, pro rata to the holders of each subclass of Class C Notes, all
         accrued and unpaid interest (including Step-Up Interest, if any) on and
         all outstanding principal of such subclass of Class C Notes;
    
 
                                       109
<PAGE>   111
 
   
     (6)   Sixth, pro rata to the holders of each subclass of Class D Notes, all
           accrued and unpaid interest (including Step-Up Interest, if any) on
           and all outstanding principal of such subclass of Class D Notes;
    
 
   
     (7)   Seventh, pro rata to the providers of any credit or liquidity
           enhancement facilities in favor of AerCo other than Primary Eligible
           Credit Facilities, such amounts as are required to make any payment
           due under their facilities;
    
 
   
     (8)   Eighth, pro rata to any swap provider, such amounts as are required
           to make any Subordinated Swap Payments due to such swap provider
           under any Swap Agreement;
    
 
   
     (9)   Ninth, pro rata to any investor or other person in respect of any
           obligation incurred in connection with any Permitted Tax-Related
           Disposition, such amounts as are required to make any Subordinated
           Tax-Related Disposition Payments due;
    
 
   
     (10)  Tenth, pro rata to the holders of each subclass of the Class E Notes
           all accrued and unpaid interest on and all outstanding principal of
           such subclass of Class E Notes; and
    
 
   
     (11)  Eleventh, to the charitable trust trustee, all remaining amounts.
    
 
     INDENTURE COVENANTS
 
   
     NO RELEASE OF OBLIGATIONS.  AerCo will not take, or knowingly permit any
subsidiary to take, any action which would amend, terminate (other than any
termination in connection with the replacement of such agreement with an
agreement on terms substantially no less favorable to AerCo and its subsidiaries
than the agreement being terminated) or discharge or prejudice the validity or
effectiveness of the indenture (other than as permitted therein), the security
trust agreement, the intercompany loans, the cash management agreement, the
administrative agency agreement, the deposit agreement or any servicing
agreement or permit any party to any such document to be released from such
obligations, except, in each case, as permitted or contemplated by the terms of
such document;
    
 
   
provided that such actions may be taken or permitted, and such releases may be
permitted, if AerCo shall have first obtained an authorizing resolution of the
directors of AerCo determining that such action, permitted action or release
does not materially adversely affect the interests of the Noteholders and having
given notice to the rating agencies;
    
 
and provided further, that in any case
 
   
     (1) AerCo will not take any action which would result in any amendment or
         modification to the conflicts standard or duty of care in such
         agreements; and
    
 
   
     (2)  there must be at all times an administrative agent, a cash manager
          and, unless a servicer resigns prior to the appointment of a
          replacement servicer as a result of any failure to pay amounts due and
          owing to it and notice of such resignation is given to the rating
          agencies, one or more servicers with respect to all aircraft in the
          portfolio.
    
 
   
     LIMITATION ON ENCUMBRANCES.  AerCo will not, and will not permit any
subsidiary to, create, incur, assume or suffer to exist any mortgage, pledge,
lien, encumbrance, charge or security interest (in each case, an "ENCUMBRANCE"),
including, without limitation, any conditional sale, or any sale with recourse
against the seller or any affiliate of the seller or any agreement to give any
security interest over or with respect to any of AerCo's or subsidiary's assets
(excluding Segregated Funds) (including, without limitation, all shares of
capital stock, all beneficial interests in trusts, all ordinary shares and
preferred shares, any options, warrants and other rights to acquire such shares
or interests and any Indebtedness of any subsidiary held by AerCo or a
subsidiary).
    
 
   
     However, AerCo may create, incur, assume or suffer to exist:
    
 
   
     (1)  any Permitted Encumbrance;
    
 
   
     (2)  any security interest created or required to be created under the
          security trust agreement;
    
                                       110
<PAGE>   112
 
   
     (3)  Encumbrances over rights in or derived from leases, upon confirmation
          from the rating agencies in advance that such action or event will not
          result in the lowering or withdrawal of any rating assigned by any
          rating agency to any of the AerCo Notes then Outstanding, so long as
          any transaction or series of transactions resulting in such
          Encumbrance, taken as a whole, does not materially adversely affect
          the amount of collections that would have been received by AerCo from
          such lease had such Encumbrance not been created;
    
 
   
     (4)  Encumbrances over any aircraft, leases or funds on deposit in the Tax
          Defeasance Account or investments held in that account created in
          connection with any Permitted Tax-Related Disposition; or
    
 
   
     (5)  any other Encumbrance the validity or applicability of which is being
          contested in good faith in appropriate proceedings by AerCo or any of
          its subsidiaries.
    
 
   
     "AFFILIATE" means, with respect to any person, any other person that,
directly or indirectly, controls, is controlled by or is under common control
with, such person or is a director or officer of such person. "CONTROL" of a
person means the possession, direct or indirect, of the power to direct or cause
the direction of the management and policies of such person, whether through the
ownership of voting Stock, by contract or otherwise.
    
 
   
     "PERMITTED ENCUMBRANCE" means:
    
 
   
     (1)  any lien for taxes, assessments and governmental charges or levies not
          yet due and payable or which are being contested in good faith by
          appropriate proceedings;
    
 
   
     (2)  in respect of any aircraft, any liens of a repairer, carrier or hanger
          keeper arising in the ordinary course of business by operation of law
          or any engine or parts-pooling arrangements or other similar lien;
    
 
   
     (3)  any permitted lien or encumbrance on any aircraft, engines or parts as
          defined under any lease thereof (other than liens or encumbrances
          created by the relevant lessor);
    
 
   
     (4)  any liens created by or through or arising from debt or liabilities or
          any act or omission of any lessee in each case either in contravention
          of the relevant lease (whether or not such lease has been terminated)
          or without the consent of the relevant lessor (so long as that if such
          lessor becomes aware of any such lien, such lessor shall use
          commercially reasonable efforts to have any such liens lifted);
    
 
   
     (5)  any head lease, lease, conditional sale agreement or purchase option
          existing on July 15, 1998, with respect to the initial aircraft, or,
          in the case of any additional aircraft, on the date such aircraft is
          acquired, or any aircraft agreement meeting the requirements of
          clauses (3), (5) or (6) of the second paragraph under the "Limitation
          on Aircraft Sales" covenant:
    
 
   
     (6)  any lien for air navigation authority, airport tending, gate or
          handling (or similar) charges or levies;
    
 
   
     (7)  any lien created in favor of AerCo, or any of its subsidiaries or the
          security trustee; and
    
 
   
     (8)  any lien not referred to in (1) through (7) above which would not
          adversely affect the owner's rights and does not exceed the greater of
          1% of the aggregate Initial Appraised Value of the portfolio and
          $250,000 per aircraft.
    
 
   
     LIMITATION ON RESTRICTED PAYMENTS.  AerCo will not, and will not permit any
of its subsidiaries, to:
    
 
   
     (1)  declare or pay any dividend or make any distribution on its stock held
          by persons other than AerCo or any of its subsidiaries;
    
 
   
     (2)  purchase, redeem, retire or otherwise acquire for value any shares of
          stock of AerCo or any of its subsidiaries held by and on behalf of
          persons other than AerCo, any of its subsidiaries or other persons
          permitted under the requirements of (2)(b) under the "Limitation on
          the Issuance, Delivery and Sale of Stock" covenant;
    
 
                                       111
<PAGE>   113
 
   
     (3)  make any interest, principal or premium payment, if any, on the AerCo
          Notes or make any voluntary or optional repurchase, defeasance or
          other acquisition or retirement for value of Indebtedness of AerCo or
          any of its subsidiaries that is not owed to AerCo or any of its
          subsidiaries other than in accordance with, "-- Payment of Principal
          and Interest"; or
    
 
   
     (4)  make an investments (other than Permitted Account Investments,
          investments permitted under the "Limitation on Engaging in Business
          Activities" covenant, Allowed Restructurings and investments in any
          subsidiaries that own or lease aircraft so long as written
          notification of the organization or acquisition of each such
          subsidiary shall have been given to each rating agency).
    
 
   
     The term "INVESTMENT" for purposes of the above covenant means any loan or
advance to a person or entity, any purchase or other acquisition of any capital
stock, warrants, rights, options, obligations or other securities of such person
or entity, any capital contribution to such person or entity or any other
investment in such person or entity. The term "investment" shall not include any
obligation of a purchaser of an aircraft to make deferred or installment
payments pursuant to any Aircraft Agreement specified in clauses (3), (5) or (6)
of the second paragraph under "Limitations on Aircraft Sales" below so long as
AerCo Group retains a security interest in the relevant aircraft until all such
obligations are discharged.
    
 
   
     LIMITATION ON DIVIDENDS AND OTHER PAYMENT RESTRICTIONS.  AerCo will not,
and will not permit any of its subsidiaries to, create or otherwise suffer to
exist any consensual encumbrance or restriction of any kind on the ability of
any subsidiary to:
    
 
   
     (1)  declare or pay dividends or make any other distributions permitted by
          applicable law, or purchase, redeem or otherwise acquire for value,
          the stock of AerCo or such subsidiary, as the case may be;
    
 
   
     (2)  pay any Indebtedness owed to AerCo or such subsidiary;
    
 
   
     (3)  make loans or advances to AerCo or such subsidiary; or
    
 
   
     (4)  transfer any of its property or assets to AerCo or any other
          subsidiary thereof.
    
 
   
     The foregoing restrictions shall not apply to any consensual encumbrances
or other restrictions:
    
 
   
     (1)  existing on July 15, 1998, in the case of the Initial Aircraft, or, in
          the case of any Additional Aircraft, on the date such aircraft is
          acquired, under any Related Document (including any amendments,
          extensions, refinancings, renewals or replacements of such documents)
          so long as the consensual encumbrances and restrictions in any such
          amendments, extensions, refinancings, renewals or replacements are no
          less favorable in any material respect to the holders of the AerCo
          Notes than those previously in effect; or
    
 
   
     (2)  in the case of clause (4) above;
    
 
   
        (a)  that restrict in a customary manner the subletting, assignment or
             transfer of any property or asset that is a lease, license,
             conveyance or contract or similar property or asset; or
    
 
   
        (b)  existing by virtue of any transfer of, agreement to transfer,
             option or right with respect to, or consensual encumbrance on, any
             property or assets of AerCo or any subsidiary not otherwise
             prohibited by the Indenture. This covenant shall not prevent AerCo
             or any subsidiary from creating, incurring, assuming or suffering
             to exist any Encumbrances that are not otherwise prohibited under
             the indenture.
    
 
   
     LIMITATION ON ENGAGING IN BUSINESS ACTIVITIES.  AerCo will not, and will
not permit any subsidiary to, engage in any business or activity other than:
    
 
   
     (1) purchasing or otherwise acquiring aircraft assets both directly and
         indirectly through the acquisition of aircraft-owning entities (subject
         to the limitations set forth in the "Limitation on Aircraft
         Acquisitions" covenant);
    
 
   
     (2)  owning (including, subject to the limitations set forth in the
          "Limitation on Aircraft Acquisitions" covenant, acquiring additional
          Aircraft), holding, converting, maintaining, modifying, managing,
    
 
                                       112
<PAGE>   114
 
   
operating, leasing, re-leasing and, subject to the limitations set forth in the
"Limitations on Aircraft Sales" covenant, selling or otherwise disposing of the
aircraft (including Permitted Tax-Related Dispositions);
    
 
   
     (3)  entering into all contracts and engaging in all related activities
          incidental thereto, including from time to time accepting, exchanging,
          holding or permitting any of its subsidiaries to accept, exchange or
          hold (an "ALLOWED RESTRUCTURING") promissory notes, contingent payment
          obligations or equity interests, of Lessees or their affiliates issued
          in connection with the bankruptcy, reorganization or other similar
          process, or in settlement of delinquent obligations or obligations
          anticipated to be delinquent, of such lessees or their respective
          affiliates in the ordinary course of business;
    
 
   
     (4)  providing loans to, and guaranteeing or otherwise supporting the
          obligations and liabilities of, any AerCo Group member or any future
          AerCo entity, in each case on such terms and in such manner as the
          directors see fit and (whether or not AerCo, any member of the AerCo
          Group or any future AerCo entity derives a benefit therefrom) so long
          as such loans, guarantees or other supports are provided in connection
          with the purposes set forth in clauses (1) through (3) of this
          covenant;
    
 
   
     (5)  financing or refinancing the business activities described in clauses
          (1) through (3) of this covenant through the offer, sale and issuance
          of any securities of AerCo, upon such terms and conditions as the
          directors see fit, for cash or in payment or in partial payment for
          any property purchased or otherwise acquired by AerCo Group or any
          future AerCo entity;
    
 
   
     (6)  engaging in currency and interest rate exchange transactions for the
          purposes of avoiding, reducing, minimizing, hedging against or
          otherwise managing the risk of any loss, cost, expense or liability
          arising, or which may arise, directly or indirectly, from any change
          or changes in any interest rate or currency exchange rate or in the
          price or value of any of the property or assets of AerCo or any of its
          subsidiaries within limits determined by the Directors from time to
          time and submitted to the rating agencies, (including but not limited
          to dealings, whether involving purchases, sales or otherwise, in
          foreign currency, spot and forward interest rate exchange contracts,
          forward interest rate agreements, caps, floors and collars, futures,
          options, swaps, and any other currency, interest rate and other
          similar hedging arrangements and other similar instruments).
    
 
   
        However, AerCo shall not and shall not permit any of its subsidiaries
        to, enter into any such hedging arrangements or other instruments
    
 
   
        (a)  that are primarily entered into for speculative purposes, or
    
 
   
        (b)  that are not U.S. dollar-denominated interest rate swaps,
             swaptions, caps or floors;
    
 
   
        without confirmation by the rating agencies that they will not lower or
        withdraw any rating assigned by them to any AerCo Notes outstanding;
    
 
   
     (7)  establishing, promoting and aiding in promoting, constituting, forming
          or organizing companies, syndicates or partnerships of all kinds in
          any part of the world for the purposes set forth in clauses (1)
          through (3) above; so long as that written notification shall have
          been given to each rating agency that such company, trust, syndicate
          or partnership was set up in compliance with the indenture,
    
 
   
     (8)  acquiring, holding and disposing of shares, securities and other
          interests in any such company, syndicate or partnership; and
    
 
   
     (9)  disposing of shares, securities and other interests in, or causing the
          dissolution of, any existing subsidiary so long as any disposition
          which results in the disposition of an Aircraft meets the requirements
          set forth under the "Limitation on Aircraft Sales" covenant; and
    
 
   
     (10) taking out, acquiring, surrendering and assigning policies of
          insurance and assurances with any insurance company or companies which
          AerCo or any of its subsidiaries may think fit and paying the premiums
          thereon.
    
                                       113
<PAGE>   115
 
   
     LIMITATION ON INDEBTEDNESS.  AerCo will not, and will not permit any of its
subsidiaries to, incur, create, issue, assume, guarantee or otherwise become
liable for or with respect to, or become responsible for, the payment of,
contingently or otherwise, whether present or future (in any such case, to
"INCUR"), Indebtedness, except as described below.
    
 
   
     For the purposes of the indenture, "INDEBTEDNESS" means, with respect to
any person at any date of determination (without duplication):
    
 
   
     (1)  all indebtedness of such person for borrowed money;
    
 
   
     (2)  all obligations of such person evidenced by bonds, debentures, notes
          or other similar instruments;
    
 
   
     (3)  all obligations of such person in respect of letters of credit or
          other similar instruments (including reimbursement obligations with
          respect thereto);
    
 
   
     (4)  all obligations of such person to pay the deferred and unpaid purchase
          price of property or services, which purchase price is due more than
          six months after the date of purchasing such property or service or
          taking delivery and title thereto or the completion of such services,
          and payment deferrals arranged primarily as a method of raising
          finance or financing the acquisition of such property or service;
    
 
   
     (5)  all obligations of such person under a lease of (or other agreement
          conveying the right to use) any property, whether real, personal or
          mixed, that is required to be classified and accounted for as a
          capital lease obligation under U.S. GAAP;
    
 
   
     (6)  all Indebtedness (as defined in clauses (1) through (5) of this
          paragraph) of other persons secured by a lien on any asset of such
          person, whether or not such Indebtedness is assumed by such person;
          and
    
 
   
     (7)  all Indebtedness (as defined in clauses (1) through (5) of this
          paragraph) of other persons guaranteed by such person.
    
 
   
     However, the above restriction does not apply to:
    
 
   
     (1)  Indebtedness under the Notes, the Subclass D-1 and Subclass E-1 Notes.
    
 
   
     (2)  Indebtedness under any refinancing Notes or other Indebtedness issued
          in connection with the repurchase, acquisition, defeasance or
          retirement for value of AerCo Notes other than the Class E Notes so
          long as:
    
 
   
        (a)  such refinancing Notes or other Indebtedness receive ratings from
             the rating agencies at the close of such refinancing or issuance
             equal to or higher than those of the subclass being refinanced or
             repurchased, acquired, defeased or retired (determined at the date
             of incurrence);
    
 
   
        (b)  taking into account such refinancing or repurchase, acquisition,
             defeasance or retirement for value, AerCo receives prior
             confirmation from the rating agencies that such transaction will
             not result in the lowering or withdrawal of any rating assigned by
             any rating agency to any AerCo Notes outstanding at such time; and
    
 
   
        (c)  the net proceeds of any such refinancing or issuance shall be used
             only to repay the outstanding principal balance of the subclass of
             the AerCo Notes being so refinanced or repurchased, acquired,
             defeased or retired (plus any redemption premium and transaction
             expenses relating thereto).
    
 
   
     (3)  Indebtedness under guarantees by AerCo or any subsidiary of any other
          member of AerCo Group (other than guarantees described in clause (5))
          so long as no such Indebtedness in respect of any member of AerCo
          Group, other than AerCo or any subsidiary of AerCo, may be incurred if
          it would materially adversely affect the AerCo Noteholders.
    
 
                                       114
<PAGE>   116
 
   
     (4)  Indebtedness in respect of any additional Notes incurred in connection
          with a Permitted Additional Aircraft Acquisition so long as:
    
 
   
        (a)  taking into account the incurrence of such Indebtedness, AerCo
             receives prior confirmation prior that the incurrence of such
             Indebtedness will not result in the lowering or withdrawal of any
             rating assigned by any rating agency to any subclass of the AerCo
             Notes outstanding at such time and
    
 
   
        (b)  the net proceeds of such Indebtedness shall be used only to finance
             the Permitted Additional Aircraft Acquisition and
    
 
   
        (c)  such additional Notes will be cross-collateralized with all AerCo
             Notes outstanding by the collateral under the security trust
             agreement.
    
 
   
     (5)  Indebtedness in respect of guarantees by AerCo or any subsidiary of
          Indebtedness incurred by any future AerCo entity (other than a
          subsidiary of AerCo) in connection with a Permitted Additional
          Aircraft Acquisition so long as:
    
 
   
        (a)  the future AerCo entity shall have guaranteed the AerCo Notes;
    
 
   
        (b)  the Indebtedness being guaranteed would be permitted pursuant to
             clause (2) or (4) above if such Indebtedness were incurred directly
             by AerCo or any subsidiary in connection with such Permitted
             Additional Aircraft Acquisition; and
    
 
   
        (c)  the Indebtedness being guaranteed was issued by such future AerCo
             entity under an indenture, the terms of which (including the
             covenants and other obligations of such future AerCo entity) are
             substantially similar to those of the indenture.
    
 
   
     (6)  Indebtedness to aircraft sellers under aircraft acquisition or similar
          agreements.
    
 
   
     (7)  Indebtedness under intercompany loans or any agreement between AerCo
          or any of its subsidiaries and any other members of AerCo Group. Any
          Indebtedness owed by any member of AerCo Group to AerCo must be
          evidenced by promissory notes that are pledged to the security trustee
          and written notification must be given to each rating agency of the
          incurrence of such Indebtedness.
    
 
   
     (8)  Indebtedness of AerCo Group under any credit or liquidity enhancement
          facility provided in favor of AerCo Group. Before entering into a
          Primary Eligible Credit Facility, AerCo must receive confirmation from
          the rating agencies that they will not lower or withdraw any rating
          assigned by them to any subclass of AerCo Notes outstanding.
    
 
   
     (9)  Obligations to each investor or other person in respect of the cash
          proceeds in the tax defeasance account and any Subordinated
          Tax-Related Payments under to the related Permitted Tax-Related
          Disposition and any related assignment and assumption agreements and
          documents related thereto.
    
 
   
     As used in this prospectus, "GUARANTEE" means any obligation, contingent or
otherwise, of any person directly or indirectly guaranteeing any Indebtedness or
other obligation of any other person and, without limiting the generality of the
foregoing, any obligation, direct or indirect, contingent or otherwise, of such
person:
    
 
   
     (1)  to purchase or pay (or advance or supply funds for the purchase or
          payment of) such Indebtedness or other obligation of such other
          person; or
    
 
   
     (2)  entered into for purposes of assuring in any other manner the obligee
          of such Indebtedness or other obligation of the payment thereof or to
          protect such obligee against loss in respect thereof (in whole or in
          part).
    
 
   
     The term "guarantee" does not include endorsements for collection or
deposit in the ordinary course of business. The term "guarantee" when used as a
verb has a corresponding meaning.
    
 
                                       115
<PAGE>   117
 
   
     LIMITATION ON AIRCRAFT SALES.  AerCo will not, and will not permit any of
its subsidiaries to, sell, transfer or otherwise dispose of any Aircraft or any
interest therein, except as described below.
    
 
   
     However, AerCo and any of its subsidiaries will be permitted to sell,
transfer or otherwise dispose of, directly or indirectly;
    
 
   
     (1) any engines owned on July 15, 1998 or, in the case of any additional
         Aircraft, owned on the date such aircraft is acquired, or any
         replacements or parts installed in or attached to any aircraft other
         than engines; or
    
 
   
     (2)  one or more aircraft or an interest in aircraft:
    
 
   
        (a)  under a purchase option or other similar agreements existing on
             July 15, 1998, in the case of the initial aircraft, or, in the case
             of additional Aircraft, on the date such Aircraft is acquired;
    
 
   
        (b) within or among AerCo and its subsidiaries without limitation, and
            among AerCo or any of its subsidiaries and any other member of AerCo
            Group if such sale, transfer or disposition, as the case may be,
            would not materially adversely affect the AerCo Noteholders, so long
            as that written notification shall have been given to each rating
            agency of such sale, transfer or disposition;
    
 
   
        (c)  under any aircraft agreement as long as such sale does not result
             in a Concentration Default, and the net present value of the cash
             Net Sale Proceeds is not less than the Note Target Price;
    
 
   
        (d)  in order to receive insurance proceeds in connection with an event
             of loss;
    
 
   
        (e)  under an aircraft agreement that is designed to allow a person
             unrelated to AerCo or any other member of the AerCo Group to
             realize tax benefits associated with the aircraft or other assets
             being sold (any such sale, transfer or other disposition, a
             "PERMITTED TAX-RELATED DISPOSITION") so long as AerCo receives
             confirmation prior to entering into such agreement that the
             performance of such agreement will not result in the lowering or
             withdrawal of any rating assigned by any rating agency to each
             subclass of AerCo Notes outstanding at such time and all
             obligations of AerCo or any other member of AerCo Group (other than
             the obligation to pay the Tax Defeasance Amount) under such
             agreement or to any person providing credit support for such
             obligations are payable only under Subordinated Tax-Related
             Disposition Payments as set forth under "-- Priority of Payments";
             or
    
 
   
        (f)  pursuant to an aircraft agreement and, in any one calendar year,
             not exceeding 10% of the Adjusted Portfolio Value, so long as:
    
 
   
             (1) the directors unanimously confirm that each such sale does not
                 materially adversely affect AerCo and the AerCo Noteholders and
    
 
   
             (2) such sale does not result in a Concentration Default.
    
 
   
     For the purpose of this covenant, the net present value of the cash Net
Sale Proceeds of any sale, transfer or other disposition of any aircraft shall
mean the present value of all payments received or to be received by AerCo Group
in respect of such aircraft from the date of execution or option granting date,
as the case may be, of the relevant aircraft agreement through and including the
date of transfer of title to such aircraft, discounted back to the date of
execution or option granting date, as the case may be, of such agreement at the
weighted average cost of funds of AerCo Group based on the cost of funds on the
preceding payment date (excluding for such purpose any interest paid or accrued
on the Class E Notes other than the Class E Notes Interest Amount, but taking
into account any Swap Agreements).
    
 
   
     The "NOTE TARGET PRICE" of an aircraft means 103% of the aggregate
outstanding principal balance of Class A, Class B, Class C and Class D Notes,
together with any accrued but unpaid interest and any related swap breakage
costs, allocable to such aircraft on the date of the sale agreement or purchase
option date, as
    
 
                                       116
<PAGE>   118
 
   
the case may be. On any date, the outstanding principal balance of Class A,
Class B, Class C and Class D Notes allocable to an aircraft will equal:
    
 
   
     (ABV)/(APV) X (OPB), where
    
 
   
<TABLE>
    <S>    <C>
    ABV =  the Adjusted Base Value of the aircraft
    APV =  the Adjusted Portfolio Value
    OPB =  the outstanding principal balance of the Class A, B, C and D
           Notes on the most recent payment date.
</TABLE>
    
 
   
     "AIRCRAFT AGREEMENT" means any lease, sub-lease, conditional sale
agreement, finance lease, hire purchase agreement or other agreement (other than
an agreement relating to maintenance, modification or repairs) or any purchase
option granted to a person other than AerCo or its subsidiaries or any other
member of AerCo Group to purchase an aircraft under a purchase option agreement,
in each case where a person acquires or is entitled to acquire legal title, or
the economic benefits of ownership of, such aircraft.
    
 
   
     "NET SALE PROCEEDS" means the aggregate amount of cash received or to be
received from time to time (whether as initial or deferred consideration) by or
on behalf of the seller in connection with the transaction after deducting:
    
 
   
     (1)  reasonable and customary brokers' commissions and other similar fees
          and commissions (including fees received by the servicer under the
          servicing agreement); and
    
 
   
     (2)  the amount of taxes payable in connection with or as a result of such
          transaction, in each case to the extent, but only to the extent, that
          the amounts so deducted are, at the time of receipt of such cash,
          actually paid to a person that is not an affiliate of the seller and
          are properly attributable to such transaction or to the asset that is
          the subject thereof.
    
 
   
     "CONCENTRATION DEFAULT" means an Event of Default under "Operating
Covenants -- Concentration Limits", as such covenant may be adjusted from time
to time upon approval of the rating agencies, which would arise if effect were
given to any sale, transfer or other disposition or any purchase or other
acquisition as of the date of the binding sale or purchase agreement (even if
the sale, transfer or other disposition or purchase or other acquisition is
scheduled or expected to occur after the date of the binding agreement.)
    
 
   
     LIMITATION ON AIRCRAFT ACQUISITIONS.  AerCo will not, and will not permit
any of its subsidiaries, to purchase or otherwise acquire any Aircraft other
than the Initial Aircraft or any interest therein except as described below.
    
 
   
     AerCo and any of its subsidiaries will be permitted to:
    
 
   
     (1)  purchase or otherwise acquire, directly or indirectly, additional
          Aircraft; so long as
    
 
   
        (a)  no Event of Default shall have occurred and be continuing;
    
 
   
        (b)  all Scheduled Principal Payment Amounts on the AerCo Notes have
             been paid;
    
 
   
        (c)  the acquisition does not result in a Concentration Default; and
    
 
   
        (d) after giving effect to such acquisition:
    
 
   
             -  no more than 90% of the portfolio by appraised base value
                consists of Stage 3 narrowbody aircraft and regional jets,
    
 
   
             -  no more than 50% of the portfolio consists of Stage 3 widebody
                aircraft and
    
 
   
             -  no more than 15% of the portfolio consists of Stage 2 aircraft;
                and turboprop aircraft,
    
 
   
                unless the directors of AerCo obtain advance confirmation that
                such action will not result in the lowering or withdrawal of any
                rating assigned by any rating agency to any of the AerCo Notes
                outstanding; or
    
 
                                       117
<PAGE>   119
 
   
     (2)  act as sponsor of a future AerCo entity other than a subsidiary of
          AerCo that would fund an acquisition of aircraft assets with
          indebtedness guaranteed by AerCo pursuant to the "Limitation on
          Indebtedness" covenant as described above; so long as that, if such
          acquisition of aircraft assets had been consummated directly by AerCo,
          such acquisition would have been permitted pursuant to the foregoing
          clause (1).
    
 
   
     A "PERMITTED ADDITIONAL AIRCRAFT ACQUISITION" means a transaction described
in clause (1) or (2) above.
    
 
   
     LIMITATION ON MODIFICATION PAYMENTS AND CAPITAL EXPENDITURES.  AerCo will
not, and will not permit any of its subsidiaries to, make any capital
expenditures for the purpose of effecting any optional improvement or
modification of any aircraft, or for the optional conversion of any aircraft
from a passenger aircraft to a freighter or mixed-use aircraft, for the purpose
of purchasing or otherwise acquiring any engines or parts outside of the
ordinary course of business (each such expenditure, a "MODIFICATION PAYMENT")
except as described below.
    
 
   
     AerCo may, and may permit any of its subsidiaries to, make Modification
Payments if:
    
 
   
     (1)  each Modification Payment, together with all other Modification
          Payments made after July 15, 1998 to any single aircraft, do not
          exceed the aggregate amount of funds that would be necessary to
          perform one incidence of heavy maintenance (as described in the
          applicable servicing agreement) on such aircraft, including the
          airframe and the engines;
    
 
   
     (2)  such Modification Payment is included in the annual operating budget
          of AerCo Group and approved by the directors;
    
 
   
     (3)  the amount of funds necessary to make such Modification Payment shall
          have been accrued in advance as a Permitted Accrual in the expense
          account through transfers into the expense account according to the
          indenture or is otherwise allowed to be paid as Permitted
          Indebtedness; and
    
 
   
     (4)  the aggregate amount of all Modification Payments made by members of
          AerCo Group, taken as a whole, pursuant to this covenant after July
          15, 1998, including the Modification Payment in question, shall not
          exceed 5% of the aggregate Initial Appraised Value of all aircraft
          acquired by AerCo Group.
    
 
   
     LIMITATION ON CONSOLIDATION, MERGER AND TRANSFER OF ASSETS.  AerCo will
not, and will not permit any subsidiary to, consolidate with, merge with or
into, or sell, convey, transfer, lease or otherwise dispose of its property and
assets (as an entirety or substantially an entirety in one transaction or in a
series of related transactions) to, any other person, or permit any other person
to merge with or into AerCo or any subsidiary, unless:
    
 
   
     (1)  the resulting entity is a special purpose corporation, the charter of
          which is substantially similar to the Memorandum and Articles of
          Association of AerCo or the equivalent charter document of such
          subsidiary, as the case may be, and, after such consolidation, merger,
          sale, conveyance, transfer, lease or other disposition, payments from
          such resulting entity to the holders of the AerCo Notes do not give
          rise to any withholding tax payments less favorable to the holders of
          the AerCo Notes than the amount of any withholding tax payments which
          would have been required had such event not occurred;
    
 
   
     (2)  in the case of consolidation, merger or transfer by AerCo, the
          surviving successor or transferee entity shall expressly assume all of
          the obligations of AerCo in the indenture, the AerCo Notes and each
          other Related Document;
    
 
   
     (3)  the directors shall have obtained confirmation in advance that such
          action or event will not result in the lowering or withdrawal of any
          rating assigned by any rating agency to any of the AerCo Notes;
    
 
   
     (4)  immediately after giving effect to such transaction, no Event of
          Default shall have occurred and be continuing; and
    
 
                                       118
<PAGE>   120
 
   
     (5)  AerCo delivers to the trustee an officers' certificate and an opinion
        of counsel, in each case stating that such consolidation, merger or
        transfer and such supplemental indenture comply with the above criteria
        and, if applicable, the "Limitation on Aircraft Sales" covenant and that
        all conditions precedent provided for in the Indenture relating to such
        transaction have been complied with.
    
 
   
     This covenant shall not apply to any such consolidation, merger, sale,
conveyance, transfer, lease or disposition:
    
 
   
     (1)  within and among AerCo and any of its subsidiaries and among AerCo
        Group if such consolidation, merger, sale, conveyance, transfer, lease
        or disposition, as the case may be, would not materially adversely
        affect the holders of the AerCo Notes;
    
 
   
     (2)  complying with the terms of the "Limitation on Aircraft Sales"
        covenant; or
    
 
   
     (3)  effected as part of a single transaction providing for the redemption
        or defeasance of the AerCo Notes in accordance with the terms thereof as
        described under "-- Redemption" or "--Defeasance", respectively.
    
 
   
     LIMITATION ON TRANSACTIONS WITH AFFILIATES.  AerCo will not, and will not
permit any subsidiary to, directly or indirectly, enter into, renew or extend
any transaction (including, without limitation, the purchase, sale, lease or
exchange of property or assets, or the rendering of any service) with AerFi or
any affiliate of AerCo or any subsidiary, except upon fair and reasonable terms
no less favorable to AerCo or such subsidiary than could be obtained, at the
time of such transaction or at the time of the execution of the agreement
providing therefor, in a comparable arm's-length transaction with a person that
is not such an affiliate.
    
 
   
     The foregoing limitation shall not apply to:
    
 
   
     (1)  any transaction pursuant to the terms of the Related Documents;
    
 
   
     (2)  any transaction within and among AerCo or any of its subsidiaries and
        any other member of the AerCo Group, except that no such transaction,
        other than between AerCo and any of its subsidiaries, shall be
        consummated if it would materially adversely affect the holders of the
        AerCo Notes;
    
 
   
     (3)  the payment of reasonable and customary regular fees to, and the
        provision of reasonable and customary liability insurance in respect of,
        directors;
    
 
   
     (4)  any Permitted Additional Aircraft Acquisition or any transaction
        complying with the "Limitation on Aircraft Sales" covenant;
    
 
   
     (5)  any payments of the types referred to in clauses (1) or (2) of the
        "Limitation on Restricted Payments" covenant and not prohibited
        thereunder; and
    
 
   
     (6)  entering into any transaction effected as part of a single transaction
        providing for the redemption or defeasance of the AerCo Notes according
        to their terms as described under "-- Redemption" or "-- Defeasance",
        respectively.
    
 
   
     LIMITATION ON THE ISSUANCE, DELIVERY AND SALE OF STOCK.  AerCo will not:
    
 
   
     (1)  issue, deliver or sell any shares, interests, participations or other
        equivalents (however designated, whether voting or non-voting, other
        than such shares, interests, participations or other equivalents
        existing on July 15, 1998) in equity, including without limitation, all
        ordinary shares of AerCo; or
    
 
   
     (2)  sell, or permit any subsidiary, directly or indirectly, to issue,
        deliver or sell, any shares, interests, participations or other
        equivalents (however designated, whether voting or non-voting, other
        than such shares, interests, participations or other equivalents
        existing on July 15, 1998) in equity except:
    
 
   
        (a)  to the charitable trust trustee (or its nominees);
    
                                       119
<PAGE>   121
 
   
        (b)  issuances or sales of shares of stock of foreign subsidiaries of
             AerCo to nationals in the jurisdiction of incorporation or
             organization of such subsidiary, as the case may be, to the extent
             required by applicable law or necessary in the determination of the
             Directors to avoid an adverse tax consequence in any such
             jurisdiction;
    
 
   
        (c)  the pledge of shares in AerCo's subsidiaries pursuant to the
             security trust agreement;
    
 
   
        (d)  the sale, delivery or transfer of any stock of any member of AerCo
             Group in connection with the redemption or defeasance of the AerCo
             Notes, in accordance with the terms set forth under "-- Redemption"
             or "-- Defeasance", respectively;
    
 
   
        (e)  the sale of any stock in connection with any sale of Aircraft in
             compliance with the terms of the "Limitation on Aircraft Sales"
             covenant; and
    
 
   
        (f)  the sale, delivery, transfer or pledge of any stock of any AerCo
             Group member to or for the benefit of any other AerCo Group member;
             so long as notification is given to the rating agencies.
    
 
   
     In addition, under the terms of the shareholders undertaking, the
charitable trust trustee and AerFi Group have agreed that while the AerCo Notes
are outstanding they will not, without prior written approval of the trustee and
all of the directors, take any action in their capacity as shareholders of AerCo
to alter the share capital or issue any additional shares of AerCo.
    
 
   
     BANKRUPTCY AND INSOLVENCY.  AerCo:
    
 
   
     (1)  will promptly provide the trustee and the rating agencies with notice
        of the institution of any proceeding by or against AerCo or any of its
        subsidiaries, as the case may be, seeking to adjudicate any of them a
        bankrupt or insolvent, or seeking liquidation, winding up,
        reorganization, arrangement, adjustment, protection, relief or
        composition of their debts under any law relating to bankruptcy,
        insolvency or reorganization or relief of debtors, or seeking entry of
        an order for relief or the appointment of a receiver, trustee or other
        similar official for either or for any substantial part of their
        property; and
    
 
   
     (2)  will not, without an affirmative unanimous written resolution of the
        directors take any action to waive, repeal, amend, vary, supplement or
        otherwise modify its charter documents.
    
 
   
     In addition, under the terms of the shareholders undertaking, the
charitable trust trustee and AerFi Group have agreed that while the AerCo Notes
are outstanding they will not, without prior written approval of the trustee and
all of the directors, take any action in their capacity as shareholders of
AerCo:
    
 
   
     (1)  to cause AerCo to institute any proceeding seeking liquidation or
        insolvency (or similar proceeding);
    
 
   
     (2)  in the case of any such proceeding instituted against AerCo, to
        authorize or consent to such proceedings;
    
 
   
     (3)  to terminate AerCo's corporate existence;
    
 
   
     (4)  to waive or amend the Memorandum and Articles of Association of AerCo;
        or
    
 
   
     (5)  to transfer any part of the capital stock of AerCo or any interest
        therein, unless the transferee:
    
 
   
        (a)  in the case of the capital stock held by the Nominees for the
             charitable trust trustee, is a trustee of a trust formed for
             charitable purposes substantially identical to those for which the
             charitable trust is established; and
    
 
   
        (b)  enters into an agreement substantially identical to the
             shareholders undertaking in favor of the trustee.
    
 
                                       120
<PAGE>   122
 
     OPERATING COVENANTS
 
   
     CONCENTRATION LIMITS.  Unless the directors obtain prior written
confirmation from each of the rating agencies that no lowering or withdrawal of
the then current rating of any subclass of AerCo Notes will result, AerCo will
not permit any of its subsidiaries to lease or re-lease any aircraft if entering
into such proposed lease would cause the portfolio,
    
 
   
     For purposes of this restriction, the portfolio:
    
 
   
     -  excludes any aircraft that is to be disposed of within one year from the
       effective date of the lease under a binding aircraft agreement (other
       than any aircraft that AerCo has a binding agreement to acquire and that
       the directors reasonably expect will be acquired within 180 days from the
       effective date of the agreement),
    
 
   
     -  but includes any aircraft in which a member of AerCo Group retains an
       interest in, including a right to lease rentals, finance lease payments,
       installment purchase payments or other payments,
    
 
   
to exceed any of the concentration limits set forth below (the "CONCENTRATION
LIMITS"). The indenture permits breaches of these Concentration Limits upon any
renewal, extension or restructuring of any lease.
    
 
<TABLE>
<CAPTION>
                LESSEE CONCENTRATION LIMITS                       PERCENTAGE OF
                                                              MOST RECENT APPRAISED
                                                              VALUE OF PORTFOLIO(2)
                                                              ---------------------
<S>                                                           <C>
     Single Lessees rated BBB/Baa2 (or the equivalent) or
      better................................................            15%
     Other Single Lessees...................................            10%
     Five largest Lessees...................................            35%
</TABLE>
 
<TABLE>
<CAPTION>
                COUNTRY CONCENTRATION LIMITS                      PERCENTAGE OF
                                                              MOST RECENT APPRAISED
                                                              VALUE OF PORTFOLIO(2)
                                                              ---------------------
<S>                                                           <C>
     United States..........................................            25%
     Countries rated BBB/Baa2 (or the equivalent) or
      better(1).............................................            20%
     Other..................................................            15%
</TABLE>
 
<TABLE>
<CAPTION>
                REGION CONCENTRATION LIMITS                       PERCENTAGE OF
                                                              MOST RECENT APPRAISED
                                                              VALUE OF PORTFOLIO(2)
                                                              ---------------------
<S>                                                           <C>
     Developed Market Region(3).............................            50%
     Emerging Market Region(3)..............................            25%
     Other(3)...............................................            20%(4)
     Asia/Pacific(3)........................................            55%
</TABLE>
 
     --------------------
 
   
     (1) Based on the sovereign foreign currency debt rating assigned by the
         rating agencies to the country in which a lessee is habitually based at
         the time the relevant lease is executed.
    
 
   
     (2) Percentage to be obtained by dividing the aggregate most recent
        appraised values of all aircraft operating or to be operated by lessees
        habitually based in the applicable country or region by the aggregate
        most recent appraised values of all aircraft then owned by AerCo Group.
    
 
     (3) The designations of Emerging Markets and Developed Markets are as
        determined and published by Capital International Perspective S.A.
        ("MSCI") from time to time based on, among other things, gross domestic
        product levels, regulation of foreign ownership of assets, applicable
        regulatory
 
                                       121
<PAGE>   123
 
        environment, exchange controls and perceived investment risk. The
        current designations are as set out below:
 
<TABLE>
<CAPTION>
                    REGION                                         COUNTRY
                    ------                                         -------
        <S>                              <C>
        Developed Markets
          Europe.......................  EU (except Greece and Luxembourg), Norway and Switzerland
          North America................  Canada and United States
          Pacific......................  Australia, Hong Kong, Japan, New Zealand and Singapore
 
        Emerging Markets
          Asia.........................  China, India, Indonesia, South Korea, Malaysia, Pakistan,
                                         Philippines, Sri Lanka, Taiwan and Thailand
          Europe and
             Middle East...............  Czech Republic, Greece, Hungary, Israel, Jordan, Poland,
                                         Russia and Turkey
          Latin America................  Argentina, Brazil, Chile, Colombia, Mexico, Peru and
                                         Venezuela
        Other..........................  All other countries (generally those that have small or
                                         underdeveloped capital markets, including Fiji)
</TABLE>
 
   
     (4) In addition, within the "Other" designation, no more than 10% of the
        most recent appraised value of the portfolio shall be leased to lessees
        habitually based in "Other" countries rated below BBB/Baa2 (or the
        equivalent) and no more than 5% of the most recent appraised value of
        the portfolio shall be leased to lessees habitually based in "Other"
        countries in Africa.
    
 
   
     In addition, the indenture will not permit AerCo or any subsidiary to lease
aircraft operated or to be operated by lessees domiciled in certain countries
without procuring political risk insurance. The list of prohibited countries and
countries for which political risk insurance is required may be modified from
time to time upon the approval of the rating agencies.
    
 
   
     The indenture contains no limitations on the country or region where any
sublessees of aircraft operated or to be operated are domiciled if:
    
 
   
     (1)  such sublease is permitted under the relevant lease (including by
        reason of consent or waiver, if applicable) or renewed lease (including
        by reason of consent or waiver, if applicable); and
    
 
   
     (2)  the relevant lessee is either a signatory to a lease or a renewed
        lease.
    
 
   
     COMPLIANCE WITH LAW, MAINTENANCE OF PERMITS.  AerCo will:
    
 
   
     (1)  comply, and cause each of its subsidiaries to comply, in all material
        respects with all applicable laws;
    
 
   
     (2)  obtain, and cause each of its subsidiaries to obtain, all material
        governmental (including regulatory) registrations, certificates,
        licenses, permits and authorizations required for such person's use and
        operation of the aircraft, including, without limitation, a current
        certificate of airworthiness for each aircraft (issued by the applicable
        aviation authority and in the appropriate category for the nature of
        operations of such aircraft), except that:
    
 
   
        (a)  no certificate of airworthiness shall be required for any aircraft:
    
 
   
             -  during any period when such aircraft is undergoing maintenance,
                modification or repair, and
    
 
   
             -  following the withdrawal or suspension by such applicable
                aviation authority of certificates of airworthiness in respect
                of all aircraft of the same model or period of manufacture as
                such aircraft (in which case AerCo shall comply, and cause each
                of its
    
 
                                       122
<PAGE>   124
 
                subsidiaries to comply, with all directions of such applicable
                aviation authority in connection with such withdrawal or
                suspension);
 
   
        (b)  no registration, certificates, licenses, permits or authorizations
             required for the use or operation of any aircraft need be obtained
             with respect to any period when such aircraft is not being
             operated; and
    
 
   
        (c)  no such registrations, certificates, licenses, permits or
             authorizations shall be required to be maintained for any aircraft
             that is not the subject of a lease, except to the extent required
             under applicable laws;
    
 
   
     (3)  not cause or knowingly permit, directly or indirectly, through any of
        its subsidiaries, any lessee to operate any aircraft under any lease in
        any material respect contrary to any applicable law; and
    
 
   
     (4)  not knowingly permit, directly or indirectly, through any of its
        subsidiaries, any lessee not to obtain all material governmental
        (including regulatory) registrations, certificates, licenses, permits
        and authorizations required for such lessee's use and operation of any
        aircraft under any operating lease except in the cases provided in
        clauses (2)(a) and (2)(b) above.
    
 
   
     This covenant shall not be breached by virtue of any act or omission of a
lessee or sub-lessee, or of any person which has possession of the aircraft or
any engine for the purpose of repairs, maintenance, notification or storage, or
by virtue of any requisition, seizure, or confiscation of the aircraft (other
than seizure or confiscation arising from a breach by AerCo or a subsidiary of
such covenant) (each, a "THIRD PARTY EVENT"); so long as:
    
 
   
     (1)  no member of AerCo Group consents or has consented to such Third Party
        Event; and
    
 
   
     (2)  the member of AerCo Group which is the lessor or owner of such
        aircraft promptly and diligently takes such commercially reasonable
        actions as a leading international aircraft operating lessor or owner
        would reasonably take in respect of the Third Party Event, including
        (taking into account, among other things, the laws of the jurisdictions
        in which the Aircraft are located) seeking to compel such lessee or
        other relevant person to remedy such Third Party Event or seeking to
        repossess the relevant aircraft or engine.
    
 
   
     APPRAISAL OF PORTFOLIO.  AerCo will, no earlier than 90 nor later than 30
days prior to March 31 of each year, deliver to the trustee and each rating
agency appraisals of the base value of each of the aircraft, from at least three
independent appraisers that are members of the International Society of
Transport Aircraft Trading or any similar organization. Each appraisal to be
dated within 30 days prior to its delivery to the trustee.
    
 
   
     MAINTENANCE OF ASSETS.  AerCo will:
    
 
   
     (1)  in the case of each aircraft and engine that is subject to a lease,
        cause directly or indirectly, through any of its subsidiaries, such
        aircraft and engine to be maintained in a state of repair and condition
        consistent with the requirements of reasonable commercial practice of
        leading international aircraft operating lessors with respect to similar
        aircraft under lease, taking into consideration, among other things, the
        identity of the relevant lessee (including the credit standing and
        operating experience thereof), the age and condition of the aircraft and
        the jurisdiction in which such aircraft will be operated or registered
        under such lease; and
    
 
   
     (2)  in the case of each aircraft that is not subject to a lease, maintain,
        and cause each of its subsidiaries to maintain, such aircraft in a state
        of repair and condition consistent with the reasonable commercial
        practice of leading international aircraft operating lessors with
        respect to aircraft not under lease.
    
 
   
     A Third Party Event will not cause a breach of this covenant so long as:
    
 
   
     (1)  no member of AerCo Group consents or has consented to the Third Party
        Event; and
    
 
                                       123
<PAGE>   125
 
   
     (2)  the member of AerCo Group which is the lessor or owner of such
        aircraft promptly and diligently takes such commercially reasonable
        actions as a leading international aircraft operating lessor would
        reasonably take in respect of the Third Party Event, including seeking
        to compel such lessee or other relevant person to remedy the Third Party
        Event or seeking to repossess the relevant aircraft or engine.
    
 
   
     NOTIFICATION OF TRUSTEE, CASH MANAGER AND ADMINISTRATIVE AGENT.  AerCo will
notify the trustee, cash manager and administrative agent as soon as AerCo or
any of its subsidiaries becomes aware of any loss, theft, damage or destruction
to any aircraft or engine if the potential cost of repair or replacement of such
asset (without regard to any insurance claim related thereto) may exceed
$2,000,000 and AerCo will notify the trustee of any breach of the share purchase
agreement by AerFi Group.
    
 
   
     LEASES.  AerCo shall adopt and will agree to cause the servicer to use, and
will adopt and will agree to cause any additional servicer (including any
servicer appointed for any additional Aircraft or to replace the servicer of the
Initial Aircraft, an "ADDITIONAL SERVICER") to use the pro forma lease agreement
or agreements then used by the servicer or such additional servicer, as the case
may be, in connection with its aircraft operating leasing services business
generally, as such pro forma lease agreement or agreements may be revised from
time to time by the servicer or such additional servicer (the "SERVICER'S PRO
FORMA LEASE") as a starting point in the negotiation of future leases with
persons who are not members of AerCo Group.
    
 
   
     In the case of any future lease entered into in connection with:
    
 
   
     (1)  the renewal or extension of a lease;
    
 
   
     (2)  the leasing of an aircraft to a person that is or was a lessee under a
        pre-existing lease; or
    
 
   
     (3)  the leasing of an aircraft to a person that is or was a lessee under
        an operating lease of an aircraft that is being managed or serviced by
        the servicer or such additional servicer, as the case may be (such
        Future Lease, a "RENEWAL LEASE"),
    
 
   
a form of lease substantially similar to the pre-existing lease or operating
lease (a "PRECEDENT LEASE"), may, in lieu of the Servicer's Pro Forma Lease, be
used by the Servicer or such Additional Servicer, as a starting point in the
negotiation of such future lease with persons who are not members of AerCo Group
or a future AerCo entity.
    
 
   
     If the directors determine, in an annual review of the Servicer's Pro Forma
Lease that any revision to the Servicer's Pro Forma Lease made from time to time
since the preceding review by the directors is substantially inconsistent with
the core lease provisions set forth in the indenture so as to have a material
adverse effect on the Noteholders, then the directors shall direct the servicer
not to include such revision in the Servicer's Pro Forma Lease. In making this
determination, the directors may take into account the revision and the risk
that the aircraft might not be able to be leased on the basis of the Servicer's
Pro Forma Lease. If the directors determine that any such revision to the
Servicer's Pro Forma Lease will not have a material adverse effect on the
Noteholders, then the directors shall amend the core lease provisions. The
directors will then notify the rating agencies of any future lease entered into
the terms of which are materially less favorable from the point of view of the
lessor than any of the leases to lessees with similar credit ratings then in
effect, including without limitation, such changes to the core lease provisions.
AerCo shall not enter into, and shall not permit any AerCo Group Member to enter
into, any future lease the rental payments under which are denominated in a
currency other than U.S. dollars without obtaining confirmation by the rating
agencies that they will not lower or withdraw any rating assigned by them to any
class of AerCo Notes outstanding.
    
 
   
     OPINIONS.  AerCo will not enter into, and will not permit any of its
subsidiaries to enter into, any future lease with any person that is not a
member of AerCo Group or change the jurisdiction of registration of any aircraft
that is subject to a lease, UNLESS, upon entering into such future lease or
changing the jurisdiction of registration of such Aircraft (or within a
commercially reasonable period thereafter), the servicer or additional servicer,
obtains such legal opinions, if any, with regard to compliance with the
registration requirements of the relevant jurisdiction, enforceability of the
Future Lease and such other matters customary
    
 
                                       124
<PAGE>   126
 
   
for such transactions if receiving such legal opinions is consistent with the
reasonable commercial practice of leading international aircraft operating
lessors.
    
 
   
     INSURANCE.  AerCo will maintain or cause, directly or indirectly through
its subsidiaries, to be maintained with reputable and responsible insurers or
with insurers that maintain relevant reinsurance with reputable and responsible
reinsurers:
    
 
   
     (1)  airline hull insurance for each aircraft in an amount at least equal
          to the Note Target Price for such aircraft (or the equivalent thereof
          from time to time if such insurance is denominated in a currency other
          than U.S. dollars);
    
 
   
     (2)  airline liability insurance for each aircraft and occurrence in an
          amount at least equal to the relevant amounts set forth in the
          Indenture for each model of aircraft (as amended from time to time
          with the approval of the Rating Agencies); and
    
 
   
     (3)  airline political risk insurance for each aircraft subject to a lease
          and habitually based in a jurisdiction determined in accordance with
          the political risk insurance guidelines, as set forth in the indenture
          and as amended from time to time by the directors with the approval of
          the rating agencies in an amount at least equal to the Note Target
          Price (or the equivalent thereof from time to time if such insurance
          is denominated in a currency other than U.S. dollars) for such
          aircraft.
    
 
   
     For a period commencing 60 days after July 15, 1998 to one year from July
15, 1998 (any period may be extended for up to one year if so requested in
writing by any rating agency), AerCo shall, upon request from any rating agency,
obtain political risk insurance with respect to aircraft leased to lessees
habitually based in countries other than Developed Markets that are specified by
each such rating agency.
    
 
   
     Such insurance may be subject to commercially reasonable deductibles and
self-insurance arrangements (taking into account, among other things, the
creditworthiness and experience of the lessee, if any, the type of aircraft and
market practices in the aircraft insurance industry generally). The coverage and
terms (including endorsements) of any insurance maintained for any aircraft not
subject to a lease shall be substantially consistent with the commercial
practices of leading international aircraft operating lessors regarding similar
aircraft.
    
 
   
     In determining the amount of insurance required to be maintained, AerCo may
take into account any indemnification from, or insurance provided by, any
governmental, supranational or inter-governmental authority or agency (other
than, with respect to political risk insurance, any governmental authority or
agency of any jurisdiction for which political risk insurance must be obtained),
the sovereign foreign currency debt rating of which is rated AA, or the
equivalent, by at least one of the rating agencies, against any risk with
respect to an aircraft at least in an amount which, when added to the amount of
insurance against such risk maintained by AerCo (or which AerCo has caused to be
maintained), shall be at least equal to the amount of insurance against such
risk otherwise required by the covenant (taking into account self-insurance
permitted by the covenant). Any such indemnification or insurance provided by
such government shall provide substantially similar protection as the insurance
required by the covenant. AerCo will not be required to maintain (or to cause to
be maintained) any insurance otherwise required hereunder to the extent that
such insurance is not generally available in the relevant insurance market from
time to time.
    
 
   
     INDEMNITY.  AerCo will, and will cause each of its subsidiaries to include
in each lease between a member of the AerCo Group and a person who is not a
member of the AerCo Group an indemnity in respect of the lease in respect of any
losses or liabilities arising from the use or operation of the aircraft during
the term of such lease, subject to such exceptions, limitations and
qualifications as are consistent with the reasonable commercial practices of
leading international aircraft operating lessors.
    
 
                                       125
<PAGE>   127
 
     EVENTS OF DEFAULT AND REMEDIES
 
   
     Each of the following events will be an "EVENT OF DEFAULT" with respect to
any class of AerCo Notes (except as specified below):
    
 
   
     (1)  failure to pay interest on the AerCo Notes of such class or any
          subclass thereof (other than Step-Up Interest), in each case when such
          amount becomes due, and such default continues for a period of five or
          more business days;
    
 
   
     (2)  failure to pay principal on any AerCo Notes of such class or any
          subclass thereof either on or prior to the applicable Final Maturity
          Date;
    
 
   
     (3)  failure to pay any amount (other than interest) when due and payable
          in connection with any AerCo Note of such class or any subclass
          thereof, to the extent that there are at such time Available
          Collections therefor, and such default continues for a period of five
          or more business days;
    
 
   
     (4)  failure by AerCo to comply with any of the covenants, obligations,
          conditions or provisions binding on it under the indenture or the
          AerCo Notes (other than a payment default for which provision is made
          in clause (1), (2) or (3) above) if such failure or such breach
          materially adversely affects the holders of such class of AerCo Notes
          and continues for a period of 30 days or more after written notice has
          been given to AerCo by the cash manager, the administrative agent, the
          servicer or additional servicer or by holders of at least 25% of the
          aggregate outstanding principal balance of the AerCo Notes of the
          senior class of Aer Notes outstanding;
    
 
   
     (5)  a court having jurisdiction in the premises enters a decree or order
          for:
    
 
   
        (a)  relief in respect of AerCo, or any subsidiary which owns or leases
             aircraft having an aggregate base value of more than 2% of the
             Adjusted Portfolio Value at that time (each, a "SIGNIFICANT
             SUBSIDIARY"), under any applicable law relating to bankruptcy,
             insolvency, receivership, winding-up, liquidation, reorganization,
             examination, relief of debtors or other similar law now or
             hereafter in effect;
    
 
   
        (b)  appointment of a receiver, liquidator, examiner, assignee,
             custodian, trustee, sequestrator or similar official of AerCo, or
             any Significant Subsidiary; or
    
 
   
        (c)  the winding up or liquidation of the affairs of AerCo, or any
             Significant Subsidiary and, in each case, such decree or order
             shall remain unstayed or such writ or other process shall not have
             been stayed or dismissed within 90 days from entry thereof;
    
 
   
     (6)  AerCo or any Significant Subsidiary:
    
 
   
        (a)  commences a voluntary case under any applicable law relating to
             bankruptcy, insolvency, receivership, winding-up, liquidation,
             reorganization, examination, relief of debtors or other similar law
             now or hereafter in effect, or consents to the entry of an order
             for relief in any voluntary case under any such law;
    
 
   
        (b)  consents to the appointment of or taking possession by a receiver,
             liquidator, examiner, assignee, custodian, trustee, sequestrator or
             similar official of AerCo, or any Significant Subsidiary or for all
             or substantially all of the property and assets of AerCo, or any
             Significant Subsidiary; or
    
 
   
        (c)  effects any general assignment for the benefit of creditors;
    
 
   
     (7)  any judgment or order for the payment of money in excess of 5% of the
          aggregate Adjusted Portfolio Value shall be rendered against AerCo or
          any subsidiary or any other member of AerCo Group and either:
    
 
   
        (a)  enforcement proceedings shall have been commenced by any creditor
             upon such judgment or order; or
    
 
                                       126
<PAGE>   128
 
   
        (b)  there shall be any period of 10 consecutive days during which a
             stay of enforcement of such judgment or order, by reason of a
             pending appeal or otherwise, shall not be in effect. However, any
             such judgment or order shall not be an Event of Default under the
             indenture; if and for so long as:
    
 
   
             - the amount of such judgment or order is covered by a valid and
               binding policy of insurance between the defendant and the insurer
               covering payment thereof; and
    
 
   
             - such insurer, which shall be rated at least A by A.M. Best
               Company or any similar successor entity, has been notified of,
               and has not disputed the claim made for payment of, the amount of
               such judgment or order;
    
 
   
     (8)  the constitutional documents of AerCo cease to be in full force and
          effect without replacement documents having the same terms being in
          full force and effect.
    
 
   
     If an Event of Default (other than an Event of Default under (5) or (6)
above) with respect to the senior class of AerCo Notes then outstanding shall
have occurred and be continuing, the trustee for the senior class (the "SENIOR
TRUSTEE") may, and, when instructed by the holders of 25% of the aggregate
outstanding principal balance of the senior class of AerCo Notes, shall, give a
default notice to AerCo and the cash manager declaring the outstanding principal
balance of the AerCo Notes and all accrued and unpaid interest thereon to be due
and payable.
    
 
   
     At any time after the senior trustee has declared the outstanding principal
balance of the AerCo Notes to be due and payable and before the exercise of any
other remedies under the Indenture, holders of a majority of the outstanding
principal balance of the senior class of AerCo Notes, by written notice to
AerCo, the senior trustee and the cash manager, may rescind and annul such the
declaration referred to above if:
    
 
   
     (1)  there has been paid to or deposited with the senior trustee an amount
        sufficient to pay all overdue installments of interest on the AerCo
        Notes, and the principal of and premium, if any, on the AerCo Notes that
        would have become due otherwise than by such declaration of
        acceleration;
    
 
   
     (2)  the rescission would not conflict with any judgment or decree; and
    
 
   
     (3)  all other defaults and Events of Default, other than nonpayment of
          interest and principal on the AerCo Notes that have become due solely
          because of such acceleration, have been cured or waived.
    
 
   
     If an Event of Default under clause (5) or (6) (above) occurs, the
outstanding principal balance of the AerCo Notes and all accrued and unpaid
interest thereon shall automatically become due and payable without any further
action by any party.
    
 
     After the occurrence and during the continuation of an Event of Default:
 
   
     (1)  the Class B Noteholders will not be permitted to give or direct the
          giving of a default notice or to exercise any remedy in respect of
          such Event of Default until all interest and principal on the Class A
          Notes have been paid in full;
    
 
   
     (2)  the Class C Noteholders will not be permitted to give a default notice
          or to exercise any remedy in respect of such Event of Default until
          all interest and principal on the Class A Notes and the Class B Notes
          have been paid in full;
    
 
   
     (3)  the Class D Noteholders will not be permitted to give a default notice
          or to exercise any remedy in respect of such Event of Default until
          all interest and principal on the Class A Notes, the Class B Notes and
          the Class C Notes have been paid in full; and
    
 
   
     (4)  the Class E Noteholders will not be permitted to give a default notice
          or to exercise any remedy in respect of such Event of Default until
          all interest and principal on the Class A Notes, the Class B Notes,
          the Class C Notes and the Class D Notes have been paid in full.
    
 
   
     The trustee shall provide each rating agency with a copy of any Default
Notice it receives.
    
 
                                       127
<PAGE>   129
 
   
     The indenture contains a provision entitling the trustee, subject to its
duty during a default to act with the required standard of care, to be
indemnified by the holders of any class of the Notes before proceeding to
exercise any right or power under the indenture or the cash management agreement
at the request or direction of such holders. Except in limited circumstances, no
holder of the Notes will have the right, other than through the senior trustee
acting in accordance with the indenture, to sue for recovery or take any other
actions to enforce the obligations of AerCo to pay any and all amounts due and
payable under the Notes, and no holder of the Notes will have the right to take
any steps to cause the filing for bankruptcy of AerCo. The senior trustee is
entitled to exercise any and all remedies available under the indenture.
    
 
   
     The term "DEFAULT" means the occurrence of any event which is, or after
notice or lapse of time, or both, would constitute an Event of Default.
    
 
     INTERCREDITOR RIGHTS
 
   
     The Senior Trustee will have sole discretion as to whether to direct the
cash manager to exercise and enforce any and all remedies with respect to the
Notes. The senior trustee may take various actions in respect of the Notes,
without regard to the interests of any other creditors.
    
 
     MODIFICATION AND WAIVER
 
   
     If the trustee receives a request for its consent to an amendment,
modification or waiver under the indenture, the AerCo Notes or any related
document relating to the AerCo Notes, the trustee shall mail a notice of such
proposed amendment, modification or waiver to each Noteholder requesting
direction from the Noteholders as to whether or not to consent to such
amendment, modification or waiver.
    
 
   
     The Indenture provides that, with the consent of the holders of a majority
of the outstanding principal balance of the AerCo Notes (acting as a single
class), modifications may be made to the AerCo Notes or the Indenture except
that any modification of the provisions:
    
 
   
     -  setting forth the frequency or the currency of payment of, the maturity
       of, or the method of calculation of the amount of any interest, principal
       and premium, if any, payable in respect of any subclass of AerCo Notes,
       or
    
 
   
     -  reducing the percentage of the aggregate outstanding principal balance
       of any subclass of AerCo Notes required to approve any such amendment or
       waiver, or
    
 
   
     -  altering the manner or priority of payment of such subclass of AerCo
       Notes,
    
 
   
is not permitted without the consent of any swap provider and the holder of each
outstanding AerCo Note affected. The senior trustee may also waive any Event of
Default. Any such modification approved by the required holders of any subclass
of AerCo Notes will be binding on the holders of the relevant subclass of AerCo
Notes and each party to the indenture. This provision shall not prevent AerCo or
any subsidiary from amending any lease if such amendment is otherwise permitted
by the indenture.
    
 
   
     The subordination provisions contained in the indenture may not be amended
or modified without the consent of each swap provider, each holder of the class
of AerCo Notes affected and each holder of any class of Notes ranking senior to
such AerCo Notes.
    
 
   
     Without the consent of each Noteholder, no amendment or modification of the
indenture or the cash management agreement may, among other things:
    
 
   
     (1)  modify the provisions of the indenture or the cash management
          agreement with respect to account payment instructions and the payment
          thereunder by the cash manager, or
    
 
   
     (2)  result in the sale of AerCo's assets other than pursuant to the
          provisions of "Indenture Covenants".
    
 
   
     In no event shall the provisions relating to the priority of the expenses,
swap payments or swap breakage costs in the indenture be amended or modified.
    
 
                                       128
<PAGE>   130
 
     NOTICES TO NOTEHOLDERS
 
   
     Except as provided below, any notice to the Noteholders (in the case of
Definitive Notes or Global Notes) will be valid if given:
    
 
   
     (1)  by publication in the Luxemburger Wort or, if such newspaper shall
        cease to be published in such English language newspaper or newspapers
        as the Trustee shall approve having a general circulation in Europe,
    
 
   
     (2)  by either of (a) the information contained in such notice appearing on
        the relevant page of the Reuters Screen or such other medium for the
        electronic display of data as may be approved by the Trustee and
        notified to Noteholders or (b) publication in the Financial Times and
        The Wall Street Journal (National Edition) or, if such newspaper shall
        cease to be published or timely publication is not practicable, in such
        English language newspaper or newspapers as the trustee shall approve
        having a general circulation in Europe and the United States, and
    
 
   
     (3)  until such time as any definitive Notes are issued and, so \long as
        book-entry interests are held by Euroclear and/or Cedel Bank, delivery
        of the relevant notice to DTC, Euroclear and/or Cedel Bank for
        communication by them to Noteholders.
    
 
   
     The trustee may approve some other method of giving notice to the
Noteholders if, in its opinion:
    
 
   
     (1)  the method is reasonable, having regard to the number and identity of
        the Noteholders and/or to market practice then prevailing,
    
 
   
     (2)  is in the best interests of the Noteholders, and
    
 
   
     (3)  will comply with the rules of the Luxembourg Stock Exchange or such
        other stock exchange (if any) on which the Notes are then listed.
    
 
   
     Any such notice shall be deemed to have been given on such date as the
trustee may approve so long as notice of such method is given to the Noteholders
in such manner as the trustee shall require.
    
 
     Notice specifying the interest rate and the amount of any repayment of
principal on any Notes pursuant to any optional redemption shall, for so long as
the Notes are listed on the Luxembourg Stock Exchange and so long as the rules
of the Luxembourg Stock Exchange so require, be given to the Luxembourg Stock
Exchange. Any such notice shall be deemed to have been given on the first day on
which requirements for such notification shall have been met.
 
     GOVERNING LAW AND JURISDICTION
 
   
     The indenture and the cash management agreement are governed by and
construed in accordance with the laws of the State of New York. In the indenture
and the cash management agreement, AerCo has submitted to the jurisdiction of
the United States Federal and New York State courts located in The City of New
York for all purposes in connection with the Notes and cash management agreement
and have each designated a person in The City of New York to accept service of
any process on its behalf.
    
 
THE SUBCLASS D-1 NOTES
 
   
     The Subclass D-1 Notes are direct obligations of AerCo under the indenture.
They were issued in an aggregate principal amount of $80 million in fully
certificated form. The Subclass D-1 Notes will accrue interest for each interest
accrual period at a rate of 8.50% per annum, payable monthly in arrears on each
payment date. The Subclass D-1 Notes have been rated BB or the equivalent by one
or more nationally recognized statistical rating agencies.
    
 
   
     All of the Subclass D-1 Notes were initially issued to AerFi Group in a
transaction exempt from the registration requirements of the Securities Act.
AerCo has granted to AerFi Group registration rights with respect to the
Subclass D-1 Notes owned by it. Under the registration rights agreement, AerFi
Group has the right to require AerCo to file a registration statement with the
Commission to register the resale of the
    
 
                                       129
<PAGE>   131
 
   
Subclass D-1 Notes under the Securities Act. If AerCo issues any additional
Notes, AerCo also expects to issue at the same time one or more additional
subclasses of Class D Notes, which may be initially issued to AerFi Group or its
subsidiaries on the basis described above or to other purchasers in transactions
that are either registered under the Securities Act or exempt from the
registration requirements.
    
 
   
     Holders of the Class D Notes will not be permitted to give a default notice
with or to exercise any remedy if any such Event of Default occurs until all
amounts owing under each other class of the Notes have been paid in full.
    
 
THE SUBCLASS E-1 NOTES
 
   
     The Subclass E-1 Notes are direct obligations of AerCo under the indenture.
They were issued in an aggregate principal amount of approximately $112 million.
The Subclass E-1 Notes were initially issued to AerFi Group in a transaction
exempt from the registration requirements of the Securities Act. If AerCo issues
any additional Notes, AerCo also expects to issue at the same time one or more
additional subclasses of Class E Notes.
    
 
   
     Under the subordination provisions of the indenture and the Subclass E-1
Notes, payments on the Subclass E-1 Notes, other than the Class E Note Primary
Interest Amount are subordinated to all payments of interest and principal on
the Notes and the Class D Notes (as set forth in "-- Priority of Payments").
Holders of the Subclass E-1 Notes will not be permitted to give a default notice
or to exercise any remedy if an Event of Default occurs until all amounts owing
under each other class of the AerCo Notes have been paid in full.
    
 
   
     The Subclass E-1 Notes will accrue interest for each interest accrual
period at a rate of 20% per annum, payable monthly in arrears on each payment
date. The stated interest rate on the Subclass E-1 Notes is adjusted by
reference to the U.S. Consumer Price Index. Except for the Class E Note Primary
Interest Amount (as described below), no interest is payable on the Subclass E-1
Notes until all of the interest, principal and premium, if any, on the AerCo
Notes have been repaid in full.
    
 
   
     The Class E Note Primary Interest Amount will be paid at the rate of 15%
per annum on the initial principal balance of the Subclass E-1 Notes. It will be
paid on each payment date only to the extent that AerCo Group has available
collections sufficient to make such payment after paying or providing for each
of the items ranking prior to such payment in the order of priority described
under "-- Priority of Payments". To the extent that available collections are
insufficient to pay the Class E Note Primary Interest Amount on any payment
date, the unpaid portion of the Class E Note Primary Interest Amount will not be
payable as part of the Class E Note Primary Interest Amount on any later payment
date. The Class E Note Accrued Interest Amount will accrue interest at the rate
described above and will be payable in the order of priority described under "--
Priority of Payments" at the twenty-seventh priority level.
    
 
   
     Principal of the Subclass E-1 Notes will not be payable until the
outstanding principal balance of the AerCo Notes and the Class D Notes is
reduced to zero.
    
 
   
     The terms of the Subclass E-1 Notes require, among other things, that the
Subclass E-1 Noteholders pay over to the cash manager any money (including
principal or interest) paid to them in the event that the cash manager, acting
in good faith, determines subsequently that such monies were not paid in
accordance with the priority of payment obligations described above under "--
Priority of Payments" or as a result of any other mistake of fact or law on the
part of the cash manager in making such payment.
    
 
   
     Under AerCo's Articles of Association, the holder or holders of a majority
in aggregate principal amount of the Class E Notes have the right to appoint two
of AerCo's directors while the Class E Notes are outstanding. AerFi Group, as
holder of a majority of the initial aggregate principal amount of the Class E
Notes, appointed Edward Hansom and Rose Hynes as directors.
    
 
                                       130
<PAGE>   132
 
THE CASH MANAGEMENT AGREEMENT
 
   
     The following is a summary description of the cash management agreement it
is not complete. We urge you to read the cash management agreement, which we
have filed as an exhibit to the registration statement.
    
 
   
     Each payment of cash in respect of any subclass of Notes and all other
payments to be received by AerCo or made by AerCo pursuant to the indenture will
be directed by the cash management agreement.
    
 
   
     The cash management agreement appoints the cash manager (1) to establish
and administer the accounts described below (2) to prepare reports with respect
to such performance and (3) to perform certain other specified administrative
tasks on behalf of AerCo. The cash manager shall ensure that the proceeds of the
AerCo assets are deposited in the collection account.
    
 
THE ACCOUNTS
 
   
     The cash manager, acting on behalf of the security trustee, has established
the following accounts:
    
 
   
     (1)  the collection account;
    
 
   
     (2)  the lessee funded account;
    
 
   
     (3)  the initial rental accounts;
    
 
   
     (4)  the expense account;
    
 
   
     (5)  the aircraft purchase account;
    
 
   
     (6)  the refinancing account; and
    
 
   
     (7)  the defeasance/redemption account.
    
 
   
     Each of the collection account, the rental accounts, the expense account,
the lessee funded account and the aircraft purchase account has been established
at a bank having:
    
 
   
     (1)  a long-term unsecured debt rating of not less than AA, or the
          equivalent, by the rating agencies; or
    
 
   
     (2)  a certificate of deposit rating of A-1+ by Standard & Poor's and P-1
          by Moody's and that is acceptable to the other rating agency.
    
 
   
     Where required by the terms of the relevant leases, rental accounts may be
established at banks having ratings of less than AA, or the equivalent, by the
rating agencies, or a certificate of deposit rating of less than A-1+ by
Standard & Poor's and P-1 by Moody's. Except where local legal or regulatory
reasons do not permit, all of such accounts will be held in the name of the
security trustee, who will have sole dominion and control over the accounts,
including, among other things, the sole power to direct withdrawals from or
transfers among such accounts. Subject to limited conditions set forth in the
cash management agreement, the security trustee will delegate such authority
over the accounts to the cash manager. The security trustee will not be
responsible for the acts or omissions of the cash manager.
    
 
   
     For as long as any AerCo Notes remain outstanding, funds on deposit in the
accounts (other than the tax defeasance account) will be invested and reinvested
by the cash manager at AerCo's written direction (or, following delivery to
AerCo or the cash manager of a default notice or if any Event of Default
described in clause (5) or (6) under "-- Events of Default and Remedies" shall
have occurred and be continuing, at the security trustee's written direction.
These investments must be Permitted Account Investments maturing, in the case of
the Collection Account and Expense Account, such that sufficient funds shall be
available to make required payments on the first succeeding scheduled Payment
Date after such Permitted Account Investments are made. Investment and
reinvestment of funds in the lessee funded account must be made in a manner and
with maturities that conform to the requirements of the related leases or
aircraft agreements. Investment earnings on funds deposited in any account, net
of losses and investment expenses, will, if permitted by the terms of the
related leases or aircraft agreements in the case of such funds in the lessee
funded account, be deposited in the collection account and treated as
collections.
    
 
                                       131
<PAGE>   133
 
     RENTAL ACCOUNTS
 
   
     The lessees will make all payments under the Leases directly into the
applicable rental accounts. The cash manager will transfer all funds deposited
into the rental accounts into the collection account as collections within one
business day of receipt thereof (other than certain limited amounts, if any,
required to be left on deposit for local legal or regulatory reasons).
    
 
     THE COLLECTION ACCOUNT
 
   
     Collections include all amounts received by AerCo Group, including:
    
 
   
     (1) rental payments;
    
 
   
     (2) payments under any letter of credit, letter of comfort, letter of
         guarantee or other assurance in respect of a lessee's obligations under
         a lease;
    
 
   
     (3) the Liquidity Reserve Amount (as described below) deposited into the
         collection account on July 15, 1998 and on the closing date of any
         acquisition of additional aircraft;
    
 
   
     (4) amounts received in respect of claims for damages or in respect of any
         breach of contract for nonpayment of any of the foregoing (including
         any amounts received from any AerCo subsidiary, whether by way of
         distribution, dividend, repayment of a loan or otherwise and any
         proceeds received in connection with any Allowed Restructuring);
    
 
   
     (5) net proceeds of any aircraft sale or amounts received under any
         aircraft agreement;
    
 
   
     (6) proceeds of any insurance payments in respect of any aircraft or any
         indemnification proceeds;
    
 
   
     (7) certain amounts transferred from the lessee funded account to the
         collection account;
    
 
   
     (8) net payments to AerCo under any swap agreement;
    
 
   
     (9) investment income, if any, on all amounts on deposit in the accounts
         (in each case to the extent consistent with the terms of applicable
         related Leases);
    
 
   
     (10) the portion of the purchase price or other net proceeds from any
          Permitted Tax-Related Disposition that is not required to be retained
          in the tax defeasance account; and
    
 
   
     (11) any other amounts received by any member of the AerCo Group other than
          segregated funds, certain funds to be applied in connection with a
          redemption, certain funds received in connection with a refinancing
          and other amounts required to be paid over to any third-party pursuant
          to any Related Document.
    
 
   
     Collections on deposit in the collection account will be calculated by the
cash manager on the calculation date. The portion of the Required Expense Amount
that has not been paid directly by the cash manager to expense payees will be
transferred into the expense account on each payment date and the cash manager
may, from time to time, transfer other amounts into the expense account in
respect of unanticipated expenses falling due and payable within such interest
accrual period. If funds are available on any payment date, the cash manager
will also transfer amounts in respect of expenses and costs that are not
regular, monthly recurring expenses anticipated to become due and payable in any
future Interest Accrual Period ("PERMITTED ACCRUALS"). Amounts received for
segregated security deposits and maintenance reserves (as described below) will
be transferred directly into the lessee funded account.
    
 
     LIQUIDITY RESERVE AMOUNT
 
   
     All collections received by AerCo will either be transferred to another
account as described above and below, paid to the appropriate third party on
behalf of AerCo or held in the collection account as a part of the cash portion
of the Liquidity Reserve Amount. The "Liquidity Reserve Amount" is the minimum
balance AerCo must maintain in the collection account under the indenture. The
Liquidity Reserve Amount is intended to provide liquidity for AerCo Group to
meet its aircraft maintenance obligations and its lessee security deposit
repayment obligations and to provide for certain other contingencies that may
arise in the course of AerCo Group's activities. The Liquidity Reserve Amount
may be funded with cash in the collection account and with letters of credit,
guarantees or other credit support instruments ("ELIGIBLE CREDIT FACILITIES")
provided by, or supported with credit support instruments provided by, a person
whose short-term
    
 
                                       132
<PAGE>   134
 
unsecured debt is rated P-1 by Moody's, A-1+ by Standard & Poor's and D-1+ by
DCR. There are currently no Eligible Credit Facilities in place.
 
   
     The initial Liquidity Reserve Amount is equal to $40 million plus the
amount of security deposits AerCo and its subsidiaries holds (currently $16
million). The Liquidity Reserve Amount may be increased or decreased from time
to time for any reason (including upon acquisitions of additional aircraft by an
action of the board in light of significant changes in, the condition of the
aircraft, the terms and conditions of future leases, the financial condition of
the lessees or prevailing industry conditions). AerCo must obtain confirmation
in advance in writing from the rating agencies that any proposed reduction in
the Liquidity Reserve Amount will not result in a lowering or withdrawal by the
rating agencies of their respective ratings of any subclass of AerCo Notes.
    
 
   
     If the balance of cash on deposit in the collection account, together with
the amount available for drawing under any Eligible Credit Facilities, should
fall below the Liquidity Reserve Amount at any time, AerCo may continue to make
all payments, and any credit or liquidity enhancement facilities may be drawn to
fund such payments, including required payments on the Notes, which rank prior
to or equally with, payments of accrued and unpaid interest on the Class D Notes
under "-- Priority of Payments" and any Permitted Accruals other than those for
Modification Payments. Except as described below, the balance of funds in the
collection account, together with the amount available for drawing under any
Eligible Credit Facilities, does not fall below the Minimum Liquidity Reserve
Amount at its then current level. The balance of funds in the collection
account, together with the amount available for drawing under any Eligible
Credit Facilities, may fall below the Minimum Liquidity Reserve Amount at its
then current level and AerCo may continue to make payments of all accrued and
unpaid interest on any subclass of the most senior class of Notes then
outstanding to avoid an Event of Default, and, on the Final Maturity Date of any
subclass, principal of such subclass of the most senior class of Notes then
outstanding to avoid an Event of Default.
    
 
     Amounts drawn under any Eligible Credit Facility will either be repayable
at the third level in the priority of payments, as set forth in "Description of
the Notes -- Priority of Payments", before the First Collection Account Top-Up
(any such facility, a "PRIMARY ELIGIBLE CREDIT FACILITY") or at the eleventh
level in the priority of payments, as set forth in "Description of the Notes --
Payment of Principal and Interest -- Priority of Payments", before the Second
Collection Account Top-Up (any such facility, a "SECONDARY ELIGIBLE CREDIT
FACILITY").
 
   
     At such time as the aggregate outstanding principal balance of the Notes is
less than or equal to the Liquidity Reserve Amount, the balance of funds, if
any, in the collection account will be distributed in accordance with the
priority of payments.
    
 
     THE LESSEE FUNDED ACCOUNT
 
   
     Under the terms of the leases, certain lessee security deposits and
supplemental rent payments to provide for maintenance reserves may be required
to be segregated from other AerCo funds. Amounts received from lessees in
respect of such security deposits and maintenance obligations will be held in
the lessee funded account. Amounts on deposit in the lessee funded account will
be accounted for, and, if required by any lease, segregated, on a per lease
basis. Funds on deposit in the lessee funded account will be used to make
certain maintenance and security deposit repayment related payments (or such
other payments as may be required or permitted under the terms of the relevant
leases) or may be applied against maintenance-related payments otherwise
required to be made by the lessee during the term of the related lease. These
funds will not be used to make payments in respect of the Notes at any time,
including after the delivery of a default notice. In circumstances where lessees
relinquish their rights to receive certain maintenance and security deposit
payments upon the expiration of a lease, surplus funds may be credited from the
lessee funded account to the collection account.
    
 
     THE EXPENSE ACCOUNT
 
   
     On each payment date, the cash manager will withdraw from the funds
deposited in the collection account, in the priority of payments established for
the Notes, an amount equal to the required expense amount. This amount will then
be used to pay the Expenses. If the required expense amount has not been paid
    
 
                                       133
<PAGE>   135
 
   
directly by the cash manager to expense payees, the required expense amount will
be deposited into the expense account. In addition, in the period between
payment dates, the cash manager may make further withdrawals of cash from the
collection account in order to satisfy expenses due and payable prior to the
next payment date that were not previously anticipated to become so due and
payable on the previous payment date. If funds on deposit in the collection
account are less than the required expense amount on any payment date, AerCo
Group will be unable to pay the required expense amount in full on such date,
which may lead to a default under one or more of the Related Documents or
AerCo's various service agreements. All available collections remaining in the
collection account will be used by the Cash Manager to make payments on the
AerCo Notes, in accordance with the priority of payments established therefor
under "-- Priority of Payments".
    
 
     THE TAX DEFEASANCE ACCOUNT
 
   
     If AerCo enters into any Permitted Tax-Related Disposition, one or more tax
defeasance accounts may be established. The tax defeasance account will be
established at either:
    
 
   
     (1)  the bank where the collection account, the lessee funded account and
          the expense account are held, or
    
 
   
     (2)  a bank whose credit rating is equal to or greater than the credit
          rating of the most senior class of AerCo Notes outstanding.
    
 
   
     The purchase price for, or other proceeds from, any Permitted Tax-Related
Disposition will be deposited in the tax defeasance account. On each payment
date, the cash manager will withdraw from the funds deposited in the tax
defeasance account an amount equal to the excess, if any, of (1) such purchase
price or other proceeds over (2) the amount necessary to meet the obligations of
AerCo under the head lease or other relevant aircraft agreement such that the
ability of AerCo and the Lessee of such Aircraft to perform their respective
obligations and receive their respective benefits under the relevant lease is
not impaired. This amount will be deposited in the collection account.
    
 
   
THE TRUSTEE
    
 
   
     AerCo will pay the fees and expenses of the trustee. AerCo will also
indemnify and hold the trustee harmless against, any loss, liability or expenses
incurred by the trustee (other than through its own wilful misconduct, bad faith
or negligence or by reason of a breach of any of the trustee's representations
or warranties in the indenture).
    
 
   
     The trustee may resign for any subclass of AerCo Notes at any time upon at
least 90 days' prior written notice. If the trustee resigns, AerCo must appoint
a successor trustee for the subclass of AerCo Notes. Noteholders of each
subclass may have divergent or conflicting interests from the Noteholders of
other subclasses. Therefore, the trustee may be forced to resign if a conflict
of interest arises on the part of the trustee in respect of one or more subclass
of Notes.
    
 
   
     If the trustee ceases to be eligible to continue as trustee with respect to
any subclass of AerCo Notes, becomes incapable of acting as Trustee or becomes
insolvent, AerCo may remove the trustee. In addition, in that case, any AerCo
Noteholder of the applicable subclass who has been a AerCo Noteholder in good
faith for at least six months may, on behalf of itself and all other AerCo
Noteholders of the same subclass, petition any court of competent jurisdiction
for the removal of such trustee and the appointment of a successor trustee.
Holders evidencing not less than a majority in aggregate outstanding principal
balance of any subclass of AerCo Notes may also at any time remove the trustee
with respect to the subclass without cause by delivering written notice of such
removal in writing to AerCo, the cash manager and the trustee. Any resignation
or removal of the trustee and appointment of a successor trustee will not become
effective until acceptance of the appointment by the successor trustee. As a
result of these provisions, it is possible that a different trustee could be
appointed to act as the successor trustee with respect to each subclass of AerCo
Notes. All references in this prospectus to the "TRUSTEE" should be read to
include the trustee and any successor trustee appointed in the event of such a
resignation or removal.
    
 
                                       134
<PAGE>   136
 
                             REPORTS TO NOTEHOLDERS
 
   
     On each payment date and any other date for distribution of any payments on
each subclass of outstanding Notes the trustee will include a monthly report,
with the following information:
    
 
   
<TABLE>
    <S>   <C>                                                           <C>
    (1)   For each Payment Date:
          (a) the balances on deposit on the calculation date
          immediately preceding the prior payment date,
          (b) the aggregate amounts of deposits and withdrawals
          between such calculation date and the calculation date
              immediately preceding the payment date, and
          (c) the balances on deposit in the expense account,
          collection account, the aircraft purchase account, and
              lessee funded account on the calculation date
              immediately preceding such payment date.
    (2)   Analysis of Expense Account Activity:
          (a) Balance on preceding calculation date,
          (b) Net transfer to the expense account between the prior
          calculation date and the current calculation date,
          (c) Payments between prior calculation date and the current
          calculation date:
          (-) Payments on prior payment date
          (-) Other payments,
          (d) Balance on relevant calculation date.
    (3)   Analysis of Collection Account Activity
          (a) Balance on preceding calculation date:
          - Required Expense Amount (including on preceding payment
          date)
          - Net Transfer to lessee funded accounts during period
          - Collections during period
          - Transfer from the aircraft purchase account
          - Transfer from the tax defeasance account
          - Drawings under credit or liquidity enhancement facilities
          - Aggregate Note payments
          - Swap payments/receipts
          - Repayments of drawings under credit or liquidity
          enhancement facilities,
          (b) Balance on relevant calculation date (separately stating
          the components of the Liquidity Reserve Amount),
          (c) Analysis of current payment date distributions.
    (4)   Payments on the Notes:
          (a) Floating Rate Notes (by subclass):
          - Applicable LIBOR for the current interest accrual period
          - Applicable margin for the current interest accrual period
          - Applicable interest rate for the current interest accrual
          period
          - Interest amount payable
          - Step-Up Interest
          - Opening outstanding principal balance
          - Minimum Principal Payment Amount
          - Scheduled Principal Payment Amount
          - Supplemental Principal Payment Amount
          - Redemption amount
          - amount allocable to principal
          - amount allocable to premium
          - Closing outstanding principal balance,
</TABLE>
    
 
                                       135
<PAGE>   137
   
<TABLE>
    <S>   <C>                                                           <C>
          (b) Fixed Rate Notes (by class and, if applicable,
          subclass):
          - Applicable interest rate,
          - Interest amount payable.
    (5)   Floating Rate Note information for next interest accrual
          period
          (by subclass):
          (a) Applicable LIBOR,
          (b) Applicable margin,
          (c) Applicable interest rate.
    (6)   Payments per $100,000 initial outstanding principal balance
          of Notes
          (by subclass):
          (a) Opening outstanding principal balance,
          (b) Total principal payments,
          (c) Closing outstanding principal balance,
          (d) Total interest,
          (e) Total premium.
</TABLE>
    
 
   
     Following effectiveness of the registration statement, we will furnish any
monthly reports and quarterly reports to the Commission in a report on Form 6-K.
We expect to furnish the quarterly reports within 45 days of the end of each of
our fiscal quarters.
    
 
   
     After the end of each calendar year, the trustee will furnish to each
person who was a holder of any subclass of Notes during the year, a statement
containing the sum of the amounts determined under clause (6) above for the
subclass for the calendar year or the applicable portion of the calendar year.
The trustee will also include any additional information that you may request as
being necessary for the preparation of your U.S. federal income tax returns, if
the information is available to the trustee. So long as the Notes of any class
or subclass are registered in the name of DTC or its nominee, the report and any
other items will be prepared on the basis of information supplied to the trustee
by DTC and the DTC participants, and will be delivered by the trustee to the DTC
participants to be available for forwarding by the DTC participants to you as
described above.
    
 
   
     The trustee will publish following each payment date and other date
specified above in a daily newspaper in Luxembourg (expected to be the
Luxemburger Wort) a notice that the monthly and quarterly reports and the other
information described above will be available for review at the main office of
the Listing Agent for the Notes in Luxembourg, Banque Internationale a
Luxembourg S.A., 69 route d'Esch, L-1470 Luxembourg. The Luxembourg Stock
Exchange will receive notice promptly following each payment date. In addition,
the Trustee will provide the information to Bloomberg Financial Markets promptly
following each payment date for publication on the BLOOMBERG.
    
 
   
     If the Notes are ever issued as definitive Notes, the trustee will prepare
and deliver the information described above to each holder of record of a
definitive Note.
    
 
                                       136
<PAGE>   138
 
                             AVAILABLE INFORMATION
 
   
     AerCo has filed with the Securities and Exchange Commission (the
"COMMISSION") a registration statement on Form F-4 (including all amendments,
exhibits and schedules, for the New Notes. This prospectus is part of the
registration statement. When the registration statement becomes effective, AerCo
will become subject to the information reporting requirements of the Securities
Exchange Act of 1934, as amended (the "EXCHANGE ACT") as applicable to "foreign
private issuers". As a foreign private issuer, AerCo will be exempt from
provisions of the Exchange Act which prescribe the furnishing and content of
proxy statements to shareholders and which relate to short swing profits
reporting and liability. AerCo will also make certain monthly and quarterly
reports available to holders of the Notes. See "Reports to Noteholders". Any
reports and other information filed by AerCo with the Commission may be
inspected and copied at the public reference facilities maintained by the
Commission at Room 1024, Judiciary Plaza, 450 Fifth Street, N.W., Washington,
D.C. 20549 and will also be available for inspection and copying at the regional
offices of the Commission located at 7 World Trade Center, New York, New York
10048 and at Northwestern Atrium Center, 500 West Madison Street (Suite 1400),
Chicago, Illinois 60661 at prescribed rates. The Commission maintains a Web site
(http://www.sec.gov) that contains reports and other information, including the
registration statement filed by AerCo.
    
 
   
     This prospectus does not contain all the information in the registration
statement and the related exhibits and schedules, certain portions of which have
been omitted as permitted by the rules and regulations of the Commission. If you
need additional information with respect to AerCo and the securities offered by
this prospectus, please refer to the registration statement and the exhibits
filed or incorporated as a part of the registration statement, which are on file
at the offices of the Commission and may be obtained upon payment of the fee
prescribed by the Commission, or may be examined without charge at the offices
of the Commission. Statements contained in this prospectus as to the contents of
any documents referred to are not necessarily complete, and, in each such
instance, are qualified in all respects by reference to the applicable documents
filed with the Commission.
    
 
   
     This prospectus contains forward-looking statements that involve risks and
uncertainties. The actual results of AerCo Group could differ materially from
those discussed. Factors that could cause or contribute to such differences
include those discussed under "Risk Factors" and elsewhere in this prospectus.
    
 
     The Old Notes were listed on the Luxembourg Stock Exchange on July 15,
1998, and the New Notes will be listed upon issuance, subject only to notice of
issuance. The constitutive documents of AerCo and the legal notice relating to
the issuance of the Notes have been deposited with the Registrar of the District
Court in Luxembourg (Greffier en Chef du Tribunal d'Arrondissement de et a
Luxembourg) where such documents will be available for inspection and where such
documents will be obtainable upon request. Copies of the Prospectus, the annual
report of independent public accountants and the reports to Noteholders referred
to under "Reports to Noteholders" are available at the office of the listing
agent (the "LISTING AGENT") in Luxembourg: Banque Internationale a Luxembourg,
69, route d'Esch, L-1470 Luxembourg. Financial information regarding AerCo will
be included in AerCo's Quarterly Reports on Form 6-K and Annual Reports on Form
20-F and will be available at the office of the Listing Agent in Luxembourg
after the respective reports are filed with the Commission.
 
   
     Unless otherwise stated, all monetary amounts are expressed herein in
United States dollars ("$"). Various percentages set out in this prospectus have
been rounded and accordingly may not total exactly.
    
 
   
     Until           , 1999 (90 days after commencement of the exchange offer),
all dealers effecting transactions in the registered securities, whether or not
participating in this distribution, may be required to deliver a prospectus.
This is in addition to the obligation of dealers to deliver a prospectus when
acting as underwriters and with respect to their unsold allotments or
subscriptions.
    
 
   
     No person has been authorized to give any information or to make any
representations other than as contained herein, and, if given or made, such
information or representation must not be relied upon as having been authorized
by AerCo. This prospectus does not constitute an offer to sell or a solicitation
of an offer to buy by any person in any jurisdiction in which it is unlawful for
such person to make such an offer or
    
 
                                       137
<PAGE>   139
 
   
solicitation. Neither the delivery of this prospectus nor any sale made
hereunder shall under any circumstances create any implication that the
information contained herein is correct as of any time subsequent to its date.
    
 
   
     The consent of the Jersey Financial Services Commission under the Control
of Borrowing (Jersey) Order 1958 (as amended) (the "1958 ORDER") has been
obtained to the issue of the Old Notes and New Notes by AerCo.
    
 
   
     When this document is circulated there will have been delivered a copy
thereof to the Registrar of Companies in Jersey in accordance with Article 6 of
the Companies (General Provisions) (Jersey) Order 1992 and the consent of the
Registrar of Companies to its circulation will have been given and not
withdrawn. It must be distinctly understood that, in giving these consents,
neither the Registrar of Companies nor the Jersey Financial Services Commission
takes any responsibility for the financial soundness of AerCo or for the
correctness of any statements made, or opinions expressed, with regard to it.
    
 
                                       138
<PAGE>   140
 
            BOOK-ENTRY REGISTRATION, GLOBAL CLEARANCE AND SETTLEMENT
 
BOOK-ENTRY REGISTRATION; DEPOSIT AGREEMENT
 
   
     The Global Notes will be deposited with Bankers Trust Company, as
book-entry depositary under the deposit agreement. The book-entry depositary
will issue certificateless depositary interests for each subclass of New Notes
to DTC or its nominee, representing the aggregate principal amount of the Global
Note for that subclass. Until book-entry interests are exchanged for definitive
Notes, the certificateless depositary interests held by DTC may not be
transferred except as a whole by DTC to its nominee or by a nominee of DTC to
DTC or another of its nominees or by DTC or any such nominee to a successor of
DTC or a nominee of such successor.
    
 
   
     Book-entry interests will be shown only on, and transfers of book-entry
interests will be effected only through, records maintained in book-entry form
by DTC or its nominee and its participants, including Euroclear and Cedel.
    
 
   
     So long as the book-entry depositary is the holder of the global notes, the
book-entry depositary will be considered the sole holder of the global notes for
all purposes under the indenture. Until book-entry interests are exchanged for
definitive Notes, all references in this prospectus to actions by Noteholders
will refer to actions taken by the book-entry depositary upon instructions of
DTC or its nominee, acting in accordance with the procedures of DTC, and all
references in this prospectus to distributions, notices, reports and statements
to Noteholders will refer to distributions, notices, reports and statements to
the book-entry depositary for further distribution to DTC and DTC participants,
including Euroclear and Cedel, in accordance with the deposit agreement and the
procedures of DTC and DTC participants. Holders of book-entry interests will be
entitled to receive definitive Notes in exchange for book-entry interests only
in the limited circumstances described in "Description of the Notes -- Form --
Definitive Notes". Accordingly, each person owning a book-entry interest must
rely on the procedures of the book-entry depositary and DTC and, if such person
is not a participant in DTC, on the procedures of the participant through which
such person owns its interest, to exercise any rights and obligations of a
holder under the Indenture.
    
 
     ACTION BY OWNERS OF BOOK-ENTRY INTERESTS
 
   
     Not later than 10 days after receipt by the book-entry depositary of notice
of any solicitation of consents or request for a waiver or other action by the
book-entry depositary as Noteholder, the book-entry depositary will mail to DTC
a notice containing:
    
 
   
     -  the information as is contained in the notice,
    
 
   
     -  a statement that at the close of business on a specified record date DTC
        will be entitled to instruct the book-entry depositary as to the
        consent, waiver or other action, if any, pertaining to the
        certificateless depositary interests or the Global Notes, and
    
 
   
     -  a statement as to the manner in which such instructions may be given.
    
 
   
     Upon the written request of DTC, which shall have solicited instructions
from the registered owners of book-entry interests in accordance with its rules
and procedures, the book-entry depositary shall take such action regarding the
requested consent, waiver or other action on the global notes in accordance with
any instruction set forth in such request. The book-entry depositary will not
exercise any discretion in the granting of consents or waivers or the taking of
any other action on the certificateless depositary interests or the global
notes.
    
 
     REPORTS
 
   
     The book-entry depositary will immediately, and no later than 10 days from
receipt, send to DTC a copy of any notices, reports and other communications
received relating to AerCo or the Notes.
    
 
                                       139
<PAGE>   141
 
     ACTION BY BOOK-ENTRY DEPOSITARY
 
   
     Subject to certain limitations, upon the occurrence of a default with
respect to the Notes, or in connection with any other right of a holder of Notes
under the indenture or the deposit agreement, if requested in writing by DTC,
the book-entry depositary will take any such action as shall be requested in
such notice.
    
 
     CHARGES OF BOOK-ENTRY DEPOSITARY
 
   
     AerCo has agreed to pay all charges of the book-entry depositary under the
deposit agreement. AerCo has also agreed to indemnify the book-entry depositary
against certain liabilities incurred by it under the deposit agreement.
    
 
     AMENDMENT AND TERMINATION
 
   
     The deposit agreement may be amended by agreement between AerCo and the
book-entry depositary. The consent of DTC will not be required for any amendment
to the deposit agreement:
    
 
   
     -  to cure any inconsistency, omission, defect or ambiguity in such
        agreement;
    
 
   
     -  to add to the covenants and agreements of the book-entry depositary or
        AerCo;
    
 
   
     -  to evidence succession of another person to AerCo in accordance with the
        indenture;
    
 
   
     -  to effectuate the assignment of the book-entry depositary's rights and
        duties to a qualified successor;
    
 
   
     -  to comply with the Securities Act, the Exchange Act, the U.S. Investment
        Company Act of 1940, as amended, or the Trust Indenture Act of 1939, as
        amended; or
    
 
   
     -  to modify, alter, amend or supplement the deposit agreement in any other
        manner that is not adverse to DTC or the owners of book-entry interests.
    
 
   
     Except as listed above, no amendment that adversely affects DTC or the
owners of book-entry interests may be made to the deposit agreement or the
book-entry interests without the consent of DTC or the owners of book-entry
interests corresponding to a majority in principal amount at maturity of the
Notes.
    
 
   
     Upon the issuance of definitive Notes in exchange for all of the global
notes and satisfaction of certain other conditions, the deposit agreement will
terminate. The provisions of the deposit agreement may be terminated upon the
resignation of the book-entry depositary if no successor has been appointed
within 90 days as described under "-- Resignation or Removal of Book-Entry
Depositary" below.
    
 
     RESIGNATION OR REMOVAL OF BOOK-ENTRY DEPOSITARY
 
   
     The book-entry depositary may resign at any time by written notice to AerCo
and the Trustee, any resignation to take effect when AerCo appoints a successor
book-entry depositary and the successor book-entry depositary's acceptance of
the appointment. If at the end of 90 days after delivery of the notice, AerCo
has not appointed a successor book-entry depositary and the successor book-entry
depositary has not accepted the appointment, the book-entry depositary may
terminate the deposit agreement.
    
 
     OBLIGATIONS OF BOOK-ENTRY DEPOSITARY
 
   
     The book-entry depositary will assume no obligation or liability under the
deposit agreement other than to use good faith and reasonable care in the
performance of its duties.
    
 
GLOBAL CLEARANCE AND SETTLEMENT
 
     DTC
 
   
     Transfers of book-entry interests between DTC participants will occur in
accordance with DTC rules. Transfers between participating organizations whose
securities are held by Cedel Bank and participants in
    
 
                                       140
<PAGE>   142
 
   
Euroclear will occur in accordance with the applicable rules and operating
procedures of Cedel and Euroclear.
    
 
   
     Cedel Bank and Euroclear will hold omnibus positions of book-entry
interests on behalf of their participants through customers' securities accounts
in Cedel Bank's and Morgan Guaranty's names on the books of their depositaries
which, in turn, will hold such positions in customers' securities accounts in
the depositaries' names on the books of DTC. Citibank, N.A. will act as
depositary for Cedel Bank and Morgan Guaranty Trust Company of New York will act
as depositary for Euroclear.
    
 
   
     Cross-market transfers between persons holding through DTC participants and
through Cedel participants will be effected by DTC in accordance with DTC rules
on behalf of Cedel or Euroclear by its depositary. Cross-market transactions
between persons holding through DTC participants and Euroclear participants will
be effected in accordance with DTC rules on behalf of Euroclear by its
depositary. However, any cross-market transactions will require delivery of
instructions to Cedel or Euroclear by the counterparty in accordance with its
rules and procedures and within its established deadlines. If the transaction
meets its settlement requirements, Cedel Bank or Euroclear will deliver
instructions to its depositary to take action to effect final settlement on its
behalf by delivering or receiving securities in DTC, and making or receiving
payment in accordance with normal procedures for same-day funds settlement
applicable to DTC. Cedel participants and Euroclear participants may not deliver
instructions directly to the Depositaries.
    
 
   
     Because of time-zone differences, credits of book-entry interests received
in Cedel Bank or Euroclear as a result of a transaction with a DTC participant
will be made during the securities settlement processing day dated the business
day following the DTC settlement date. Such credits or any transactions in such
book-entry interests settled during such processing will be reported to the
relevant Cedel participant or Euroclear participant on such business day. Cash
received in Cedel Bank or Euroclear as a result of sales of book-entry interests
by or through a Cedel participant or Euroclear participant to a DTC participant
will be received with value on the DTC settlement date but will be available in
the relevant Cedel or Euroclear cash account only as of the business day
following settlement in DTC.
    
 
   
     DTC is a limited purpose trust company organized under the laws of the
State of New York, a member of the Federal Reserve System, a "clearing
corporation" within the meaning of the New York Uniform Commercial Code and a
"clearing agency" registered under the provisions of Section 17A of the Exchange
Act. DTC was created to hold securities for DTC participants and to facilitate
the clearance and settlement of securities transactions between DTC participants
through electronic book-entry changes in accounts of DTC participants,
eliminating the need for physical movement of certificates. DTC participants
include securities brokers and dealers, banks, trust companies and clearing
corporations and may in the future include certain other organizations. Indirect
access to the DTC system also is available to others such as banks, brokers,
dealers and trust companies that clear through or maintain a custodial
relationship with a DTC participant either directly or indirectly. Owners of
book-entry interests who are not DTC participants but desire to purchase, sell
or otherwise transfer ownership of, or other interests in, the book-entry
interests may do so only through DTC participants. Indirect participants are
required to effect transfers through a DTC participant.
    
 
   
     Payments on the book-entry interests will be made to DTC and are the
responsibility of AerCo. Owners of book-entry interests will receive all
distributions on the book-entry interests from the trustee or other paying agent
through DTC participants and indirect participants. Disbursement of any payments
to DTC participants will be the responsibility of DTC and disbursement of any
payments to the owners of book-entry interests will be the responsibility of DTC
participants and indirect participants. DTC's practice is to credit DTC
participants' accounts on the payment date in accordance with their respective
holdings shown on DTC's records unless DTC has reason to believe that it will
not receive payment on such payment date. Payments by DTC participants to owners
of book-entry interests will be governed by standing instructions and customary
practices, as is the case with securities held for the accounts of customers in
bearer form or registered in "street name," and will be the responsibility of
such DTC participant. Unless definitive Notes are exchanged for book-entry
interests, owners of book-entry interests, Noteholders will be permitted to
exercise the rights of holders under the indenture only indirectly through DTC
and DTC participants.
    
 
                                       141
<PAGE>   143
 
   
     Under the rules, regulations and procedures governing DTC and its
operations, DTC is required to make book-entry transfers of book-entry interests
among the DTC participants on whose behalf it acts with respect to book-entry
interests and to receive and transmit distributions on the book-entry interests.
DTC participants and indirect participants with which holders have accounts for
the book-entry interests similarly are required to make book-entry transfers and
receive and transmit any payments on behalf of their book-entry interests. The
DTC rules provide a mechanism by which holders will receive payments and will be
able to transfer their interests.
    
 
   
     DTC has advised AerCo that it will take any action permitted to be taken by
a holder on each subclass of book-entry interests under the Indenture only at
the direction of one or more DTC participants to whose accounts that class or
subclass of book-entry interests is credited. Additionally, DTC has advised
AerCo that it will take such actions with respect to any percentage of the
outstanding principal amount of any subclass of book-entry interests only at the
direction of and on behalf of the DTC participants whose holders own such
outstanding principal amount. DTC may take conflicting actions with respect to
different classes or subclasses of Notes to the extent that such actions are
taken on behalf of DTC participants whose holdings include such different
subclasses of book-entry interests.
    
 
   
     DTC'S YEAR 2000 EFFORTS.  DTC management is aware that some computer
applications, systems, and the like for processing data that are dependent upon
calendar dates, including dates before, on and after January 1, 2000, may
encounter Year 2000 problems. DTC has informed its participants and other
members of the financial community that it has developed and is implementing a
program so that its systems, as they relate to the timely payment of
distributions to securityholders, book-entry deliveries, and settlement of
trades within DTC, continue to function appropriately. This program includes a
technical assessment and a remediation plan, each of which is complete.
Additionally, DTC's plan includes a testing phase, which is expected to be
completed within appropriate time frames.
    
 
   
     However, DTC's ability to perform its services properly is also dependent
upon other parties, including issuers and their agents, as well as third party
vendors from whom DTC licenses software and hardware, and third party vendors on
whom DTC relies for information or the provision of services, including
telecommunication and electrical utility service providers. DTC has informed its
participants and members of the financial community that it is contacting third
party vendors from whom DTC acquires services to emphasize the importance of
their services being Year 2000 compliant and determine the extent of their
efforts for Year 2000 remediation of their services. In addition, DTC is
developing any contingency plans as it deems appropriate.
    
 
   
     According to DTC, the information above has been provided to its
participants and members of the financial community for informational purposes
only and is not intended to serve as a representation, warranty, or contract
modification of any kind.
    
 
     CEDEL
 
   
     Distributions on book-entry interests held through Cedel will be credited
to cash accounts of Cedel participants in accordance with Cedel's rules and
procedures, to the extent received by its depositary. Cedel will take any other
action permitted to be taken by a Noteholder under the Indenture on behalf of a
Cedel participant only in accordance with its rules and procedures and subject
to its depositary's ability to effect such actions on its behalf through DTC.
    
 
     EUROCLEAR
 
   
     Securities clearance accounts and cash accounts with the Euroclear operator
are governed by the Terms and Conditions Governing Use of Euroclear and the
related Operating Procedures of the Euroclear System and applicable Belgian law.
The Euroclear terms and conditions govern transfers of securities and cash
within Euroclear, withdrawals of securities and cash from Euroclear and receipts
of payments with respect to securities in Euroclear. All securities of a
particular class or subclass in Euroclear are held on a fungible basis without
attribution of specific certificates to specific securities clearance accounts.
The Euroclear operator
    
 
                                       142
<PAGE>   144
 
   
acts under the Euroclear terms and conditions only on behalf of Euroclear
participants, and has no record of or relationship with persons holding through
Euroclear participants.
    
 
   
     Distributions on book-entry interests held through Euroclear will be
credited to the cash accounts of Euroclear participants in accordance with the
Euroclear terms and conditions, to the extent received by its depositary. The
Euroclear Operator will take any other action permitted to be taken by a
Noteholder under the Indenture on behalf of a Euroclear participant only in
accordance with the Euroclear terms and conditions and subject to its
depositary's ability to effect such actions on its behalf through DTC.
    
 
   
     Although DTC, Cedel and Euroclear have agreed to the procedures described
above in order to facilitate transfers of book-entry interests among
participants of DTC, Cedel and Euroclear, they are under no obligation to
perform or continue to perform those procedures and may be discontinue them at
any time.
    
 
CUSIP, ISIN AND COMMON CODE NUMBERS
 
   
     The book-entry interests in the New Notes have been accepted for clearance
through Euroclear and Cedel. The CUSIP numbers, International Securities
Identification Numbers ("ISIN") and the Common Code Numbers ("CCN") are set
forth in the table below.
    
 
   
<TABLE>
<CAPTION>
SUBCLASS                                                   CUSIP        ISIN          CCN
- --------                                                 ---------    ---------    ---------
<S>                                                      <C>          <C>          <C>
Subclass A-1.........................................
Subclass A-2.........................................
Subclass B-1.........................................
Subclass C-1.........................................
</TABLE>
    
 
                                       143
<PAGE>   145
 
   
                               TAX CONSIDERATIONS
    
 
   
IRISH TAX CONSIDERATIONS
    
 
   
     The following summary is based on an opinion of McCann FitzGerald on
principles of Irish taxation law. These principles depend on interpretation of
current law, regulations, rulings and decisions and Revenue practice, and
reliance on Revenue confirmations obtained prior to the issue of, and in
connection with the Old Notes, all of which are subject to change. Any such
change may be applied retroactively and may adversely affect the principles of
Irish tax on which the opinion is based. This summary does not address all Irish
tax principles that may apply to all categories of potential investors, some of
which may be subject to special rules.
    
 
     IRISH INCOME AND WITHHOLDING TAXES ON PAYMENTS ON THE NOTES
 
   
     In the opinion of McCann FitzGerald, there will be no withholding or
deduction for Irish taxes on principal and interest paid by AerCo on the Global
Notes or any payment of the principal and interest on the Book-Entry Interests.
The foregoing opinion, insofar as it relates to interest, is based on certain
assumptions, including that the Notes (including the Global Notes) are listed on
the Luxembourg Stock Exchange or on another stock exchange which is recognized
for relevant purpose of Irish law and that interest on the Global and Book-Entry
Notes is paid by a paying agent outside of Ireland.
    
 
   
     The issuance of Definitive Notes may cause interest payments to be subject
to Irish withholding tax at the standard income tax rate (currently 24%). If any
Irish withholding tax is imposed, noteholders and holders of Book-Entry
Interests should note that AerCo will not make any additional payments for any
withholding tax. In this regard, Ireland has tax treaties with a number of
jurisdictions which, under certain circumstances, reduce the rate of Irish
withholding tax on payments of interest to persons resident in those
jurisdictions. A holder of a Definitive Note who is entitled to the benefit of
Article 11 of the income tax treaty between the United States and Ireland (the
"TREATY") (such a holder a "U.S. HOLDER") will normally be eligible to recover
in full any Irish tax withheld from payments of interest to which such U.S.
Holder is beneficially entitled by making a claim under the Treaty on the
appropriate form. Alternatively, a claim may be made by a U.S. Holder in advance
of a payment of interest. If the claim is accepted by the Irish Revenue, it will
normally authorize subsequent payments to that U.S. Holder to be made without
withholding for Irish tax.
    
 
   
     Noteholders who are not ordinarily resident in Ireland will not be subject
to Irish income tax on interest paid by AerCo on the Notes so long as the
interest payments are made by AerCo in the course of carrying on relevant
trading operations under its Shannon certificate ("SHANNON CERTIFIED
OPERATIONS"). For additional information on Shannon Certified Operations and
their termination in 2005 and factors which might lead to their earlier
termination see "Irish Taxation of the AerCo Group" below. After December 2005
or on earlier termination of AerCo Shannon Certified Operations, the exemption
from Irish tax described above currently enjoyed by Noteholders who are not
ordinarily resident in Ireland will terminate, absent a change in law in the
intervening period.
    
 
   
     Interest payments made by AerCo have an Irish source and whether or not
paid gross are, under existing Irish tax law, chargeable to Irish income tax by
self-assessment, subject, however, to such relief as may be afforded by the
provisions of any applicable double tax treaty. However, as a matter of
practice, the Irish tax authorities do not pursue collection of any such
liability for Irish tax for persons who are not resident in Ireland except where
such persons:
    
 
   
     -  receive payments of interest through a person (including a trustee) or
       in the name of an agent or branch in Ireland having the management and
       control of the interest; or
    
 
   
     -  seek to claim relief and/or repayment of tax deducted at source in
       respect of taxed income from Irish sources; or
    
 
   
     -  are chargeable to Irish corporation tax on the income of an Irish branch
       or agency or to income tax on the profits of a trade carried on in
       Ireland to which the interest is attributable.
    
 
                                       144
<PAGE>   146
 
   
     The termination of the legislative provisions dealing with Shannon
Certified Operations on December 31, 2005 will not affect the exemption from
Irish withholding tax described above.
    
 
     TAXATION OF CAPITAL GAINS
 
     Capital gains tax is chargeable at the rate of 20% on taxable capital gains
with allowance being made for inflation adjusted acquisition costs and
enhancement expenditure. The Notes are chargeable assets for Irish capital gains
tax purposes. However, non-resident holders are only liable for capital gains
tax on the disposal of the Notes where the Notes are unquoted and derive their
value or the greater part of their value from land and buildings or mineral
rights situated in Ireland.
 
     IRISH CAPITAL ACQUISITION TAX
 
   
     Irish capital acquisitions tax ("CAT") on individuals applies to gifts and
inheritances where the donor is domiciled in Ireland at the date of the gift or
inheritance or to the extent that the property of which the gift or inheritance
consists is situated in Ireland at the date of the gift or inheritance. The
donee is primarily liable to pay the CAT. Persons who are secondarily liable
include the donor, his personal representative and an agent, trustee or other
person in whose care the property constituting the gift or inheritance or the
income from the property is placed. All taxable gifts and inheritances received
by an individual since June 2, 1982 [December 1, 1988] are aggregated and only
the excess over a certain tax-free threshold is taxed. The tax-free threshold
depends on the relationship between the donor and donee and the aggregation of
all previous gifts and inheritances. The current tax-free threshold amounts are:
    
 
   
     - IRL12,860 for gift and inheritances between persons who are not related
       to one another,
    
 
   
     - IRL25,720 for gifts and inheritances received from a brother, sister or
       from a brother or sister of a parent or from a grandparent, and
    
 
   
     - IRL192,900 for gifts and inheritances received from a parent.
    
 
   
     Gifts and inheritances between spouses are exempt from CAT. CAT is charged
at progressive rates ranging from 15% to 30% for gifts and from 20% to 40% for
inheritances. The Notes may constitute property situated in Ireland for CAT
purposes. There is no gift and inheritance tax convention between the United
States and Ireland. Although an estate tax convention between the two countries
was ratified in 1951, estate duty was abolished in Ireland in 1975, and it is
not clear whether the estate tax convention is applicable to Irish gift and
inheritance taxes that replaced the former estate duty.
    
 
     PROBATE TAX
 
   
     A 2% Irish probate tax is payable on the value of any Notes passing under
the will or intestacy of an individual. No probate tax is payable on
inheritances from spouses. Since probate tax was only introduced in 1993, it is
not clear whether credit relief would be available under the estate tax
convention discussed above.
    
 
     IRISH STAMP DUTY
 
     No stamp duty, stamp duty reserve tax or issue, documentary, registration
or other similar tax imposed by any government department or other taxing
authority of or in Ireland (collectively "IRISH STAMP DUTY") will be payable by
Noteholders on the creation, initial issue or delivery of Notes.
 
   
     Since the Global Notes are bearer securities, they will not be charged with
Irish stamp duty, if transferred by delivery. The Global Notes will be exempt
from Irish stamp duty under section 106 of the Finance Act, 1993 if the issue
price is not less than ninety percent of their nominal value and if transferred
by a written instrument. If that exemption was not applicable and in the absence
of any other applicable exemption such instrument in writing would be chargeable
with Irish stamp duty if either the instrument was executed in Ireland or,
wherever executed, related to any property situated in Ireland (which would
include Notes physically located in Ireland) or any matter or thing done or to
be done in Ireland. Transfers of book-entry interests in the Notes which are not
effected by written instrument will not be chargeable with Irish stamp
    
 
                                       145
<PAGE>   147
 
   
duty. Any Irish stamp duty charged on such an instrument would be at the rate of
one per cent on the amount of the consideration for the transfer or, if greater,
the market value of the Notes.
    
 
IRISH TAXATION OF THE AERCO GROUP
 
   
     The following discussion of the Irish taxation of the AerCo Group is based
on the advice of KPMG, AerCo's tax advisor.
    
 
   
     AerCo, AerCo Ireland and AerCo Ireland II will be entitled to certain
corporate tax benefits for Shannon, Ireland certified companies including a
preferential corporate taxation rate of 10% through December 2005. AerCo, AerCo
Ireland, and AerCo Ireland II may become subject to Irish corporate taxation at
general Irish statutory rates (currently 28%) if:
    
 
   
     - AerFi Group were to be liquidated or were to cease to hold its 5%
       shareholding in AerCo;
    
 
   
     - AerFi Group or GECAS were to reduce or relocate their respective
       operations for any reason such that either party failed to maintain,
       among other things, certain employment levels at Shannon, Ireland; or
    
 
   
     - AerFi Administrative Services Limited or AerFi Cash Manager II Limited
       were to resign or be terminated as administrative agent or cash manager
       of AerCo Group.
    
 
   
     Upon the scheduled termination of the Irish preferential 10% tax rate on
December 31, 2005, AerCo and the other Irish tax-resident members of the AerCo
Group will become subject to Irish corporate tax on their net trading income at
a 12.50% rate as announced by the Minister for Finance of Ireland on December 3,
1997. According to the announcement non-trading income will be taxed at 25%.
There can be no assurance that the announced rates will be adopted as law in
Ireland or that, if adopted, such rates will not thereafter be changed.
    
 
   
     A company will not be subject to Irish income tax provided that it is not
Irish tax resident, has no branch or agency in Ireland and has no Irish-source
income. ALPS 94-1 and AerCo USA have adopted certain operational provisions in
their organizational documents regarding the management and operation of their
businesses designed to minimize the likelihood of Irish taxation of their
income. In the opinion of KPMG, Irish tax advisor to AerCo, neither ALPS 94-1
nor AerCo USA will be subject to Irish income tax on their non-Irish source
income. However, there can be no assurance that ALPS 94-1 or AerCo USA will not
be subject to Irish tax on some or all of their income.
    
 
     IRISH VALUE-ADDED TAX
 
   
     Ireland generally imposes Value Added Tax (VAT) on the supply of goods and
services. Any Irish VAT that may become payable by an AerCo Group company in
connection with any management services performed by Babcock & Brown will be
eligible to be reclaimed by that company on the assumption that invoices
addressed to any AerCo Group company relate to costs attributable to a business
activity of that company which is considered to be a supply of goods or services
by that company (regardless of whether such supply of goods or services has an
Irish place of supply for VAT purposes) and that business activity is not one
which would be considered VAT exempt under Irish VAT law.
    
 
   
     Some or all of the services provided to AerCo Group by the cash manager may
be exempt from Irish VAT. To the extent that any Irish VAT is payable on
services provided to an AerCo Group company by the cash manager or by the
administrative agent such VAT will be eligible to be reclaimed by that company
on the same assumption as set out in the preceding paragraph.
    
 
   
     Payments by the lessees to AerCo and its Irish-resident subsidiary
companies will not be subject to Irish VAT in any case where the aircraft are
used or to be used by a transport undertaking operating for reward chiefly on
international routes.
    
 
                                       146
<PAGE>   148
 
CERTAIN JERSEY TAX CONSIDERATIONS
 
   
     The following summary is based upon the opinion of Mourant du Feu & Jeune
("JERSEY TAX COUNSEL") on the tax treatment under Jersey law of AerCo and ALPS
94-1 and the tax treatment under Jersey law for the purchase, ownership and
disposition of the Notes. The discussion is based on an interpretation of laws,
regulations, rulings and decisions, including certain letters from the
Comptroller of Income Tax in Jersey and the Director of the Jersey Financial
Services Department (the functions of which were taken over by the Jersey
Financial Services Commission with effect from July 1, 1998), all of which are
currently in effect and are subject to change. Any such change may be applied
retroactively and may adversely affect the Jersey tax consequences described
herein. Unless otherwise noted, the term "Note" refers to both the actual Global
Notes and the interest in the Global Notes held indirectly through DTC, Cedel or
Euroclear.
    
 
     INCOME TAXES
 
     AerCo will qualify as an "exempt company" under Article 123A of the Income
Tax (Jersey) Law 1961 as amended (the "1961 LAW") as long as it makes the
returns of information and pays the fees (currently L600 per annum) as required
by that Article and, subject to the concession referred to below, as long as no
Jersey resident has a beneficial interest (for purposes of the 1961 Law) in
AerCo. As an exempt company, AerCo will be treated for purposes of the 1961 Law
as not resident in Jersey and will pay no Jersey income tax other than on income
arising in Jersey (but, by long standing concession, excluding bank deposit
interest arising in Jersey) and on profits of its trade (if any) carried on
through an established place of business in Jersey. For purposes of the 1961 Law
the Comptroller of Income Tax in Jersey, among other things, has:
 
   
     -  granted a concession that the holders of AerCo Notes will not be
        regarded as having a beneficial interest (for the purposes of Article
        123A of the 1961 Law) in AerCo;
    
 
   
     -  confirmed that the holding of the shares in the capital of AerCo by or
        on behalf of the Charitable Trust Trustee and AerFi Group will not
        prejudice the exempt company status of AerCo;
    
 
   
     -  confirmed that the income generated by the activities undertaken by
        AerCo as described herein will not be treated as income arising in
        Jersey; and
    
 
   
     -  confirmed that the administration in and from Jersey of the business
        undertaken by AerCo as described herein will not constitute the carrying
        on of a trade through an established place of business in Jersey.
    
 
   
     Accordingly in the opinion of Jersey Tax Counsel, AerCo will not be subject
to Jersey income tax.
    
 
     WITHHOLDING TAXES
 
   
     In general, Jersey imposes a withholding tax at the rate of 20% on interest
and other amounts paid to non-residents of Jersey on a debt obligation of a
company resident in Jersey. However, no such withholding tax is imposed with
respect to an exempt company (as defined above). Accordingly, based upon AerCo's
qualification as an exempt company, in the opinion of Jersey Tax Counsel, no
withholding tax will be deducted from interest and other amounts paid on the
Notes on account of Jersey taxes.
    
 
     In the event that any Jersey withholding tax is imposed, Noteholders should
note that there is no income tax treaty between the United States and Jersey
that would apply to reduce or eliminate such withholding. Noteholders should
note further that AerCo will not be obligated under the terms of the Notes to
make any additional payments in respect of any such withholding tax.
Accordingly, in the event that withholding were to be required on account of
Jersey taxes, distributions to Noteholders may be less than those which would be
made on the Notes in the absence of any such withholding tax.
 
     OTHER TAXES
 
     There is no taxation of capital gains (other than with respect to certain
tax avoidance transactions) in Jersey. As a result, the capital gains of AerCo
on its investments and the capital gains of Noteholders on a sale or transfer of
their Notes will not be subject to taxation in Jersey. There is no value added
tax or other
                                       147
<PAGE>   149
 
relevant taxation in Jersey. No stamp duty, stamp duty reserve tax or issue,
documentary, registration or other similar tax imposed by any governmental
department or other taxing authority of or in Jersey is payable in connection
with the creation, initial issue, delivery or transfer inter vivos of the Notes.
 
     In the event that on the death of a sole individual holder of Notes who is
a non-resident of Jersey, such Notes are situated in Jersey (by virtue of their
being held on a register in Jersey or in bearer form and held in Jersey at the
date of death or otherwise deemed to be situated under applicable rules of
private international law), a grant of probate or letters of administration
would have to be obtained in Jersey and a duty of up to 1% of the value of the
assets of the deceased situated in Jersey would be payable.
 
     ALPS 94-1
 
     ALPS 94-1 will qualify as an exempt company under the 1961 Law as long as
AerCo also qualifies as an exempt company and as long as ALPS 94-1 makes the
returns of information and pays the fees as required by Article 123A of the 1961
Law (as described above). As an exempt company, ALPS 94-1 will be treated for
the purposes of the 1961 Law in the same way as AerCo. Accordingly, in the
opinion of Jersey Tax Counsel, no withholding tax will be deducted from any
amounts paid by ALPS 94-1 to AerCo as described herein on account of Jersey
taxes.
 
   
UNITED STATES TAXATION
    
 
   
     In the opinion of Davis, Polk & Wardwell, the following discussion sets
forth the material U.S. federal income tax consequences of the purchase,
ownership and disposition of Notes. This discussion deals only with Notes held
as capital assets by United States Holders (defined below) who purchased Notes
in the Offering at their "issue" price (which will be the price at which a
substantial amount of the Notes was sold to persons other than bond houses,
brokers or similar persons acting in the capacity of underwriters, placement
agents or wholesalers), and not with special classes of holders, including
without limitation, dealers in securities or currencies, banks, tax-exempt
organisations, life insurance companies, financial institutions, broker-dealers,
persons that hold securities that are a hedge or that are hedged against
currency or interest rate risks or that are part of a straddle or conversion
transaction, certain U.S. expatriates, persons that are not United States
Holders or persons whose functional currency for U.S. federal income tax
purposes is not the U.S. dollar. United States Holders who purchased Notes at a
price other than the issue price should consult their tax advisors as to the
possible applicability to them of the amortizable bond premium or market
discount rules. Further, this discussion does not address the effect of any U.S.
state or local tax laws on a United States Holder of Notes. The discussion is
based on the Internal Revenue Code of 1986, as amended (the "CODE"), its
legislative history, existing and proposed regulations thereunder, published
rulings and court decisions, all as currently in effect and all subject to
change at any time, possibly with retroactive effect.
    
 
     Purchasers of the Notes should consult their own tax advisors concerning
the consequences, in their particular circumstances, under the U.S. federal
income tax laws and the laws of any relevant state, local or other foreign
taxing jurisdiction, of ownership of the Notes.
 
   
     For purposes of this discussion, a "UNITED STATES HOLDER" means a
beneficial owner of Notes that is for U.S. federal income tax purposes a citizen
or resident of the United States, a U.S. corporation, or an estate or trust the
income of which is subject to U.S. federal income tax regardless of its source.
    
 
     PAYMENTS OF INTEREST
 
     The gross amount of interest paid on a Note will be includible in the gross
income of a U.S. Holder as ordinary interest income at the time it is received
or accrued, depending on the Holder's method of accounting for U.S. federal
income tax purposes. Interest paid by AerCo on the Notes will be income from
sources outside the United States, and, with certain exceptions, will be treated
separately, together with other items of "passive" income or, in certain cases,
"financial services" income, for purposes of computing the foreign tax credit
allowable under U.S. federal income tax laws.
 
                                       148
<PAGE>   150
 
     SALE, RETIREMENT AND OTHER DISPOSITION OF THE NOTES
 
   
     Except as noted below, upon the sale, exchange or retirement of a Note, a
United States Holder will generally recognise taxable gain or loss equal to the
difference between the amount realised (not including any amounts received that
are attributable to accrued and unpaid interest not taken into income, which
will be taxable as ordinary interest income in accordance with the United States
Holder's method of accounting as described above) and the United States Holder's
tax basis in the Note. A United States Holder's tax basis in a Note generally
will be its cost. Such gain or loss recognized on the sale or retirement of a
Note will be capital gain or loss. Prospective investors should consult their
tax advisors regarding the treatment of capital gains (which may be taxed at
lower rates than ordinary income for certain taxpayers who are individuals) and
losses (the deductibility of which is subject to limitations).
    
 
   
     An exchange of Old Notes for New Notes will not be treated as a taxable
exchange for U.S. federal income tax purposes. Accordingly, United States
Holders who exchange their Old Notes for New Notes will not recognize income,
gain or loss for United States federal income tax purposes. A United States
Holder's tax basis in the New Notes will be equal to its adjusted basis in the
Old Notes and its holding period will include the period during which it held
the Notes.
    
 
     INFORMATION REPORTING AND BACKUP WITHHOLDING
 
     Payments of principal and interest on the Notes held by certain
non-corporate holders and the proceeds of a disposition of such Notes may be
subject to U.S. information reporting requirements. Such payments also may be
subject to U.S. backup withholding at a rate of 31% if the holder does not
provide a taxpayer identification number or otherwise establish an exemption.
The holder may credit the amounts withheld against its U.S. federal income tax
liability and claim a refund for amounts withheld in excess of its tax
liability. Recently finalized regulations which are applicable to payments made
after December 31, 1999 will change the requirements for establishing an
exemption from information reporting and backup withholding.
 
                                       149
<PAGE>   151
 
                              ERISA CONSIDERATIONS
 
   
     Any Plan that proposes to purchase Notes should consult with its counsel
about the potential consequences of such investment under the fiduciary
responsibility provisions of ERISA and the prohibited transaction provisions of
ERISA and the Code.
    
 
     ERISA and the Code impose certain requirements on employee benefit plans
and certain other retirement plans and arrangements, including individual
retirement accounts and annuities, that are subject to ERISA and/or the Code
(all of which are hereinafter referred to as "PLANS") and or persons who are
fiduciaries with respect to such Plans. A person who exercises discretionary
authority or control with respect to the management or assets of a Plan will be
considered a fiduciary of the Plan under ERISA. In accordance with ERISA's
general fiduciary standards, before investing in a Note, a Plan fiduciary should
determine whether such an investment is permitted under the governing Plan
instruments and is appropriate for the Plan in view of its overall investment
policy and the composition and diversification of its portfolio, taking into
account the limited liquidity of the Notes. Other provisions of ERISA and the
Code prohibit certain transactions involving the assets of a Plan and persons
who have certain specified relationships to the Plan ("PARTIES IN INTEREST"
within the meaning of ERISA or "DISQUALIFIED PERSONS" within the meaning of the
Code). Thus, a Plan fiduciary considering an investment in Notes should also
consider whether such an investment might constitute or give rise to a
prohibited transaction under ERISA or the Code and whether an administrative
exemption might be applicable to such investment.
 
     Any prohibited transaction could be treated as exempt under ERISA and the
Code if the Notes were acquired pursuant to and in accordance with one or more
"class exemptions" issued by the DOL, such as Prohibited Transaction Class
Exemption ("PTCE") 75-1 (an exemption for certain transactions involving
employee benefit plans and broker dealers (such as an Underwriter), reporting
dealers and banks), PTCE 84-14 (an exemption for certain transactions determined
by an independent qualified professional asset manager), PTCE 91-38 (an
exemption for certain transactions involving bank collective investment funds),
PTCE 90-1 (an exemption for certain transactions involving insurance company
pooled separate accounts), PTCE 95-60 (an exemption for certain transactions
involving insurance company general accounts) or PTCE 96-23 (an exemption for
certain transactions determined by in-house asset managers).
 
     ERISA also prohibits a fiduciary of a Plan from maintaining the indicia of
ownership of any assets of the Plan outside the jurisdiction of the district
courts of the United States except under certain circumstances. Before investing
in a Note, a Plan fiduciary should consider whether its acquisition and holding
of a Note would satisfy such indicia of ownership rules.
 
     A PLAN FIDUCIARY CONSIDERING THE PURCHASE OF NOTES SHOULD CONSULT ITS TAX
AND/OR LEGAL ADVISORS REGARDING UNDER WHAT CIRCUMSTANCES THE ASSETS OF THE TRUST
WOULD BE CONSIDERED PLAN ASSETS, THE AVAILABILITY, IF ANY, OF EXEMPTIVE RELIEF
FROM ANY POTENTIAL PROHIBITED TRANSACTION AND OTHER FIDUCIARY ISSUES AND THEIR
POTENTIAL CONSEQUENCES.
 
                              PLAN OF DISTRIBUTION
 
   
     Each broker-dealer that receives New Notes for its own account under the
exchange offer must acknowledge that it will deliver a prospectus in connection
with any resale of the New Notes. This prospectus, as it may be amended or
supplemented from time to time, may be used by a broker-dealer in resales of New
Notes received in exchange for Old Notes where the Old Notes were acquired as a
result of market-making activities or other trading activities. AerCo has agreed
that, starting on the expiration date and ending on the close of business on the
180th day following the expiration date, it will make this prospectus, as
amended or supplemented, available to any broker-dealer for use with any resale
of New Notes.
    
 
   
     AerCo will not receive any proceeds from any sale of New Notes by
broker-dealers. New Notes received by broker-dealers for their own account under
the exchange offer may be sold in one or more transactions in the
over-the-counter market, in negotiated transactions, through the writing of
options on the New Notes or a combination of such methods of resale, at market
prices prevailing at the time of resale, at prices related to such prevailing
market prices or negotiated prices. Any such resale may be made directly to
purchasers or to
    
                                       150
<PAGE>   152
 
   
or through brokers or dealers who may receive compensation in the form of
commissions or concessions from any such broker-dealer and/or the purchasers of
any such New Notes. Any broker-dealer that resells New Notes that were received
by it for its own account pursuant to the exchange offer and any broker or
dealer that participates in a distribution of such New Notes may be deemed to be
an "underwriter" within the meaning of the Securities Act and any profit on any
such resale of New Notes and any commissions or concessions received by any such
persons may be deemed to be underwriting compensation under the Securities Act.
The letter of transmittal states that by acknowledging that it will deliver and
by delivering a prospectus, a broker-dealer will not be deemed to admit that it
is an "underwriter" within the meaning of the Securities Act.
    
 
   
     For a period of 180 days after the expiration date, AerCo will promptly
send additional copies of this prospectus and any amendment or supplement to
this prospectus to any broker-dealer that requests such documents in the letter
of transmittal. AerCo has agreed to pay all expenses incident to the exchange
offer (including the expenses of one counsel for the holders of the Old Notes)
other than commissions or concessions of any brokers or dealers and will
indemnify the holders of the Old Notes (including any broker-dealers) against
certain liabilities, including liabilities under the Securities Act.
    
 
                                 LEGAL MATTERS
 
   
     Certain legal matters relating to the New Notes offered in this prospectus
will be passed upon for AerCo by Davis Polk & Wardwell, New York, New York,
special United States counsel for AerCo and Mourant du Feu & Jeune, special
Jersey counsel to AerCo.
    
 
   
     In accordance with the rules of the Luxembourg Stock Exchange, AerCo states
that there has been no material adverse change in its financial position since
the date of its formation. AerCo is not a party to any material legal
proceedings.
    
 
                                    EXPERTS
 
   
     On September 9, 1998 AerCo appointed KPMG, Chartered Accountants, 5
George's Dock, IFSC Dublin 1, Ireland, as new independent auditors for the
fiscal year ending June 30, 1998 and subsequent periods. The financial
statements of ALPS 94-1 included in this prospectus at and for the year ended
June 30, 1998 and the financial statements of the AerFi Transferred Aircraft
included in this prospectus at and for the year ended June 30, 1998 have been
audited by KPMG as indicated in their report thereon included herein in reliance
upon such report given upon the authority of such firm as experts in accounting
and auditing.
    
 
   
     The financial statements of ALPS 94-1 as of June 30, 1997 and for each of
the years in the two year period ended June 30, 1997 included in this prospectus
have been audited by Arthur Andersen -- Forum House, Grenville Street, St.
Helier, Jersey, Channel Islands, independent public accountants as indicated in
their report thereon included herein in reliance upon such report given upon the
authority of such firm as experts in accounting and auditing.
    
 
   
     With respect to certain matters, AerCo and AerFi are not represented by
separate counsel and are not expected to be unless it is agreed that separate
representation is required to satisfy the professional responsibilities of
counsel. Also, certain professionals, appraisers and experts who perform
services for AerCo have performed services for Babcock & Brown and AerFi and
certain of their respective affiliates in the past and may do so again in the
future.
    
 
     Valuations of the Aircraft have been made by three expert aircraft
appraisers: Aircraft Information Services, Inc., BK Associates, Inc. and
Airclaims Limited. These valuations are discussed in detail elsewhere in this
Prospectus and are included herein in reliance upon the authority of such firms
as experts in giving such appraisals.
 
                                       151
<PAGE>   153
 
                                  AERCO GROUP
 
   
                   INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
    
 
   
<TABLE>
<CAPTION>
                                                                PAGE
                                                                ----
<S>                                                             <C>
A.  HISTORICAL CONSOLIDATED FINANCIAL STATEMENTS FOR ALPS
  94-1
     Independent auditors' report...........................     F-2
     Consolidated balance sheets............................     F-6
     Consolidated statements of operations..................     F-7
     Consolidated statements of cash flows..................     F-8
     Statements of changes in shareholders' equity..........     F-9
     Statement of accounting policies.......................    F-10
     Notes to the consolidated financial statements.........    F-14
B.  HISTORICAL FINANCIAL STATEMENTS FOR AERFI TRANSFERRED
  AIRCRAFT
     Independent auditors' report...........................    F-28
     Statement of net assets................................    F-29
     Statement of operations................................    F-30
     Statement of cash flows................................    F-31
     Statement of changes in net assets.....................    F-32
     Statement of accounting policies.......................    F-33
     Notes to the financial statements......................    F-35
</TABLE>
    
 
     COMPANY DEFINITIONS
 
     "AerCo"                 AerCo Limited, a special purpose limited liability
                             company incorporated under the laws of Jersey with
                             its registered office located at 22 Grenville
                             Street, St. Helier, Jersey, JE4 8PX, Channel
                             Islands.
 
   
     "ALPS 94-1"             Aircraft Lease Portfolio Securitization 94-1
                             Limited, a special purpose limited liability
                             company incorporated under the laws of Jersey in
                             1994 to purchase 27 aircraft from AerFi.
    
 
   
     "AerFi"                 AerFi Group plc and its subsidiary undertakings.
    
 
                                       F-1
<PAGE>   154
 
                          INDEPENDENT AUDITORS' REPORT
 
   
TO THE BOARD OF DIRECTORS AND SHAREHOLDERS OF
AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED ("ALPS 94-1")
    
 
   
     We have audited the accompanying consolidated balance sheet of ALPS 94-1 as
of June 30, 1998 and the related consolidated statement of operations and cash
flows for the year then ended.
    
 
RESPECTIVE RESPONSIBILITIES OF DIRECTORS AND AUDITORS
 
   
     The directors of ALPS 94-1 are required to prepare consolidated financial
statements for each financial year which give a true and fair view of the state
of affairs of ALPS 94-1 and its consolidated subsidiaries and of the results of
ALPS 94-1 and its consolidated subsidiaries for that year. In preparing those
consolidated financial statements, the directors are required to select suitable
accounting policies and apply them consistently, make judgements and estimates
that are prudent and reasonable and to prepare the consolidated financial
statements on the going concern basis unless it is not appropriate to assume
that ALPS 94-1 and its consolidated subsidiaries will continue in business. The
directors are responsible for keeping proper accounting records which disclose
with reasonable accuracy at any time the financial position of ALPS 94-1 and its
consolidated subsidiaries and which enable them to ensure that the annual
statutory financial statements comply with the Companies (Jersey) Law 1991. They
are also responsible for safeguarding the assets of ALPS 94-1 and hence for
taking reasonable steps for the prevention and detection of fraud and other
irregularities.
    
 
   
     It is our responsibility to form an independent opinion, based on our
audit, on those financial statements and to report our opinion to you. The
consolidated financial statements of ALPS 94-1 and subsidiaries as of June 30,
1997 and 1996 were audited by other auditors whose report dated December 2, 1997
expressed an unqualified opinion on those statements.
    
 
BASIS OF OPINION
 
     We conducted our audit in accordance with Auditing Standards issued by the
U.K. Auditing Practices Board which do not differ significantly from U.S.
generally accepted auditing standards.
 
   
     An audit includes examination, on a test basis, of evidence relevant to the
amounts and disclosures in the consolidated financial statements. It also
includes an assessment of the significant estimates and judgements made by the
directors in the preparation of the consolidated financial statements and of
whether the accounting policies are appropriate to the circumstances of ALPS
94-1 and its consolidated subsidiaries, consistently applied and adequately
disclosed.
    
 
     We planned and performed our audit so as to obtain all the information and
explanations which we considered necessary in order to provide us with
sufficient evidence to give reasonable assurance that the consolidated financial
statements are free from material misstatement, whether caused by fraud or other
irregularity or error. In forming our opinion, we also evaluated the overall
adequacy of the presentation of information in the consolidated financial
statements.
 
OPINION
 
   
     In our opinion the 1998 consolidated financial statements referred to above
give a true and fair view of the state of affairs of ALPS 94-1 and its
consolidated subsidiaries as at June 30, 1998 and of the income and cash flows
for the year ended June 30, 1998 and have been properly prepared in accordance
with U.K. generally accepted accounting principles.
    
 
                                       F-2
<PAGE>   155
                  INDEPENDENT AUDITORS' REPORT -- (CONTINUED)
 
   
     Generally accepted accounting principles in the United Kingdom vary in
certain significant respects from generally accepted accounting principles in
the United States. Application of generally accepted accounting principles in
the United States would have affected the result of operations for the year
ended June 30, 1998 and the shareholders' equity as of June 30, 1998 to the
extent summarized in Notes 23, 24 and 25 of the consolidated financial
statements.
    
 
   
KPMG
    
   
CHARTERED ACCOUNTANTS
    
   
5 George's Dock
    
   
IFSC
    
   
Dublin 1
    
   
Ireland
    
 
   
November 23, 1998
    
 
                                       F-3
<PAGE>   156
 
   
                          INDEPENDENT AUDITORS' REPORT
    
 
   
TO THE BOARD OF DIRECTORS AND SHAREHOLDERS OF
AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED ("ALPS 94-1")
    
 
   
     We have audited the accompanying consolidated balance sheet of ALPS 94-1 as
of June 30, 1997 and the related consolidated statement of operations and cash
flows for the years ended June 30, 1996 and June 30, 1997.
    
 
   
RESPECTIVE RESPONSIBILITIES OF DIRECTORS AND AUDITORS
    
 
   
     The directors of ALPS 94-1 are required to prepare consolidated financial
statements for each financial year which give a true and fair view of the state
of affairs of ALPS 94-1 and its consolidated subsidiaries and of the results of
ALPS 94-1 and its consolidated subsidiaries for that year. In preparing those
consolidated financial statements, the directors are required to select suitable
accounting policies and apply them consistently, make judgements and estimates
that are prudent and reasonable and to prepare the consolidated financial
statements on the going concern basis unless it is not appropriate to assume
that ALPS 94-1 and its consolidated subsidiaries will continue in business. The
directors are responsible for keeping proper accounting records which disclose
with reasonable accuracy at any time the financial position of ALPS 94-1 and its
consolidated subsidiaries and which enable them to ensure that the annual
statutory financial statements comply with the Companies (Jersey) Law 1991. They
are also responsible for safeguarding the assets of ALPS 94-1 and hence for
taking reasonable steps for the prevention and detection of fraud and other
irregularities.
    
 
   
     It is our responsibility to form an independent opinion, based on our
audit, on those financial statements and to report our opinion to you.
    
 
   
BASIS OF OPINION
    
 
   
     We conducted our audit in accordance with Auditing Standards issued by the
U.K. Auditing Practices Board which do not differ significantly from U.S.
generally accepted auditing standards.
    
 
   
     An audit includes examination, on a test basis, of evidence relevant to the
amounts and disclosures in the consolidated financial statements. It also
includes an assessment of the significant estimates and judgements made by the
directors in the preparation of the consolidated financial statements and of
whether the accounting policies are appropriate to the circumstances of ALPS
94-1 and its consolidated subsidiaries, consistently applied and adequately
disclosed.
    
 
   
     We planned and performed our audit so as to obtain all the information and
explanations which we considered necessary in order to provide us with
sufficient evidence to give reasonable assurance that the consolidated financial
statements are free from material misstatement, whether caused by fraud or other
irregularity or error. In forming our opinion, we also evaluated the overall
adequacy of the presentation of information in the consolidated financial
statements.
    
 
   
OPINION
    
 
   
     In our opinion the consolidated financial statements give a true and fair
view of the state of affairs of ALPS 94-1 and its consolidated subsidiaries as
at June 30, 1997 and of the income and cash flows for the years ended June 30,
1996 and June 30, 1997 and have been properly prepared in accordance with U.K.
generally accepted accounting principles.
    
 
                                       F-4
<PAGE>   157
   
                  INDEPENDENT AUDITORS' REPORT -- (CONTINUED)
    
 
   
     Generally accepted accounting principles in the United Kingdom vary in
certain significant respects from generally accepted accounting principles in
the United States. Application of generally accepted accounting principles in
the United States would have affected the result of operations for the years
ended June 30, 1997 and 1996 and the shareholders' equity and aircraft values as
of June 30, 1997 to the extent summarized in Notes 23, 24 and 25 of the
consolidated financial statements.
    
 
   
ARTHUR ANDERSEN
    
   
CHARTERED ACCOUNTANTS
    
   
Forum House
    
   
Grenville Street
    
   
St. Helier
    
   
Jersey J2E 4UF
    
   
Channel Islands
    
 
   
December 2, 1997
    
 
                                       F-5
<PAGE>   158
 
              AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED
                                AND SUBSIDIARIES
 
   
                          CONSOLIDATED BALANCE SHEETS
    
 
   
<TABLE>
<CAPTION>
                                                              NOTES    JUNE 30, 1998    JUNE 30, 1997
                                                              -----    -------------    -------------
                                                                       U.S.$'000          U.S.$'000
<S>                                                           <C>      <C>              <C>
ASSETS
CURRENT ASSETS
Cash........................................................    1          51,608            51,474
Commercial paper............................................    1          36,686            39,821
Accounts receivable.........................................    2           2,322             3,142
                                                                          -------         ---------
TOTAL CURRENT ASSETS........................................               90,616            94,437
FIXED ASSETS
Aircraft, net...............................................    3         800,090           854,596
                                                                          -------         ---------
TOTAL ASSETS................................................              890,706           949,033
                                                                          =======         =========
LIABILITIES & SHAREHOLDERS' EQUITY
LIABILITIES
Accrued expenses and other liabilities......................    5          47,003            16,089
Indebtedness................................................    6         786,139           871,495
Provision for maintenance...................................    7          44,309            46,247
Security deposits...........................................    8          13,255            15,202
                                                                          -------         ---------
TOTAL LIABILITIES...........................................              890,706           949,033
Share capital...............................................    9              --                --
Accumulated profit..........................................                   --                --
                                                                          -------         ---------
Shareholders' equity........................................                   --                --
                                                                          -------         ---------
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY..................              890,706           949,033
                                                                          =======         =========
</TABLE>
    
 
   
The accompanying notes, including the statement of accounting policies on pages
F-10 to F-13, are an integral part of the consolidated financial statements.
    
 
                                       F-6
<PAGE>   159
 
              AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED
                                AND SUBSIDIARIES
 
   
                     CONSOLIDATED STATEMENTS OF OPERATIONS
    
 
   
<TABLE>
<CAPTION>
                                                            YEAR ENDED      YEAR ENDED      YEAR ENDED
                                                   NOTES   JUNE 30, 1998   JUNE 30, 1997   JUNE 30, 1996
                                                   -----   -------------   -------------   -------------
                                                             U.S.$'000       U.S.$'000       U.S.$'000
<S>                                                <C>     <C>             <C>             <C>
REVENUES
Aircraft leasing.................................   10        101,513         102,121         102,022
EXPENSES
Depreciation.....................................    3        (37,826)        (38,062)        (17,978)
  Exceptional item -- additional depreciation....    3             --         (34,385)             --
Provision for permanent diminution in value of
  aircraft.......................................   11         (8,720)             --         (12,000)
Net interest expense.............................   12        (69,785)        (71,037)        (73,576)
  Exceptional item -- makewhole premium..........   11        (11,603)             --              --
Other expenses...................................   13         (6,599)         (5,053)         (5,581)
  Exceptional item -- termination fee............   11        (12,700)             --              --
                                                             --------        --------        --------
Total expenses...................................            (147,233)       (148,537)       (109,135)
                                                             --------        --------        --------
NET LOSS FROM OPERATIONS.........................             (45,720)        (46,416)         (7,113)
Profit on sale of aircraft.......................    3          2,426              --              --
Reduction in indebtedness........................    6         43,327          46,273           6,647
                                                             --------        --------        --------
NET INCOME/(LOSS) BEFORE PROVISION FOR TAXES.....   14             33            (143)           (466)
(Provision)/benefit for taxes....................   15            (33)            143            (200)
                                                             --------        --------        --------
NET LOSS FOR THE YEAR............................                  --              --            (666)
Dividends........................................                  --              --              --
                                                             --------        --------        --------
LOSS FOR THE YEAR................................                  --              --            (666)
RETAINED INCOME BROUGHT FORWARD..................                  --              --             666
                                                             --------        --------        --------
RETAINED INCOME CARRIED FORWARD..................                  --              --              --
BASIC LOSS PER ORDINARY SHARE....................   16             --              --           (66.6)
                                                             --------        --------        --------
WEIGHTED AVERAGE NUMBER OF ORDINARY SHARES
  OUTSTANDING....................................   16             10              10              10
                                                             ========        ========        ========
</TABLE>
    
 
All recognised gains and losses are included in the consolidated statement of
operations above.
 
   
There is no material difference between the net income for the year or prior
years, and the historical cost equivalent.
    
 
   
The results for the year are derived from continuing operations.
    
 
   
The accompanying notes, including the statement of accounting policies on pages
F-10 to F-13, are an integral part of the consolidated financial statements.
    
 
                                       F-7
<PAGE>   160
 
              AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED
                                AND SUBSIDIARIES
 
   
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
    
 
   
<TABLE>
<CAPTION>
                                                        YEAR ENDED       YEAR ENDED       YEAR ENDED
                                                       JUNE 30, 1998    JUNE 30, 1997    JUNE 30, 1996
                                                       -------------    -------------    -------------
                                                       U.S.$'000          U.S.$'000        U.S.$'000
<S>                                                    <C>              <C>              <C>
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss for the year..............................            --               --             (666)
ADJUSTMENTS TO RECONCILE NET LOSS TO NET CASH
  PROVIDED BY OPERATING ACTIVITIES
  Depreciation charge for the year.................        37,826           38,062           17,978
  Exceptional item: additional depreciation
     charge........................................            --           34,385               --
  Provision for permanent diminution in value of
     aircraft......................................         8,720               --           12,000
  Changes in operating assets and liabilities
     Accounts receivable...........................           820             (184)          (1,451)
     Accrued interest on E Note....................        17,079           14,532           12,907
     Exceptional items -- makewhole premium........        11,603               --               --
                        -- termination fee.........        12,700               --               --
     Accrued expenses and other liabilities........         4,185            1,369            2,383
     Reduction in indebtedness.....................       (43,327)         (46,273)          (6,647)
Net maintenance (expenditure)/receipts.............        (1,938)           6,703            9,694
Net security deposits repaid.......................        (1,947)          (3,475)            (666)
                                                         --------         --------         --------
NET CASH PROVIDED BY OPERATING ACTIVITIES..........        45,721           45,119           45,532
                                                         --------         --------         --------
INVESTING ACTIVITIES
Purchase of aircraft...............................        (1,132)              --               --
Sale of aircraft...................................        11,518               --               --
                                                         --------         --------         --------
MANAGEMENT OF LIQUID RESOURCES
Net sale/(purchase) of commercial paper............         3,135           (4,511)         (35,310)
                                                         --------         --------         --------
FINANCING ACTIVITIES
Indebtedness repaid................................       (59,108)         (43,494)         (36,025)
NET CASH OUTFLOW FROM FINANCING ACTIVITIES.........       (59,108)         (43,494)         (36,025)
                                                         --------         --------         --------
NET INCREASE/(DECREASE) IN CASH....................           134           (2,886)         (25,803)
CASH AT BEGINNING OF YEAR..........................        51,474           54,360           80,163
                                                         --------         --------         --------
CASH AT END OF YEAR................................        51,608           51,474           54,360
                                                         ========         ========         ========
</TABLE>
    
 
   
Supplemental disclosure of cash flow information is set out in Note 20.
    
 
   
The accompanying notes, including the statement of accounting policies on pages
F-10 to F-13, are an integral part of the consolidated financial statements.
    
 
                                       F-8
<PAGE>   161
 
              AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED
                                AND SUBSIDIARIES
 
   
                 STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY
    
 
   
<TABLE>
<CAPTION>
                                                        ISSUE OF SHARES    RETAINED PROFIT      TOTAL
                                                        ---------------    ---------------    ---------
                                                        U.S.$'000             U.S.$'000       U.S.$'000
<S>                                              <C>    <C>                <C>                <C>
Balance at June 30, 1995.....................     10           --                666             666
NET LOSS FOR THE YEAR........................     --           --               (666)           (666)
                                                 ---         ----               ----            ----
Balance at June 30, 1996.....................     10           --                 --              --
NET INCOME FOR THE YEAR......................     --           --                 --              --
                                                 ---         ----               ----            ----
Balance at June 30, 1997.....................     10           --                 --              --
NET INCOME FOR THE YEAR......................     --           --                 --              --
                                                 ---         ----               ----            ----
Balance at June 30, 1998.....................     10           --                 --              --
                                                 ===         ====               ====            ====
</TABLE>
    
 
   
The accompanying notes, including the statement of accounting policies on pages
F-10 to F-13, are an integral part of the consolidated financial statements.
    
 
                                       F-9
<PAGE>   162
 
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
                        STATEMENT OF ACCOUNTING POLICIES
 
     Incorporation
 
   
     ALPS 94-1 was incorporated in Jersey, Channel Islands on 2 June 1994. The
initial accounting period was from 2 June 1994 to June 30, 1995.
    
 
     Basis of preparation
 
   
     The accounting policies followed in the preparation of the accompanying
consolidated financial statements conform with generally accepted accounting
principles in the United Kingdom and comply with financial reporting standards
of the Accounting Standards Board in the United Kingdom as promulgated by the
Institute of Chartered Accountants in England and Wales, other than as explained
in 'Indebtedness' below. Generally accepted accounting principles in Ireland and
the United Kingdom differ in certain significant respects from generally
accepted accounting principles in the United States. A summary of these
differences are set out in Notes 23, 24 and 25.
    
 
   
     The consolidated financial statements are prepared on the going concern
basis and under the historic cost convention and are stated in U.S. dollars,
which is the principal operating currency of ALPS 94-1 and of the aviation
industry.
    
 
     Basis of consolidation
 
   
     The consolidated financial statements include the results of ALPS 94-1 and
all subsidiaries. All intercompany profits, transactions and account balances
have been eliminated.
    
 
     Revenue recognition
 
   
     Revenue from aircraft on operating leases is recognised as income on a
straight line basis over the period of the leases. Where rentals are adjusted to
reflect increases or decreases in prevailing interest rates such adjustments are
accounted for as they arise. This includes rental income earned on aircraft for
the period prior to delivery (see Accounting policies -- Aircraft). Lease
rentals received in advance are deferred and recognized over the period to which
they relate.
    
 
     Interest income
 
   
     Interest earned during the year has been credited to the statement of
operations.
    
 
     Provision for maintenance
 
   
     Under the lease contracts the lessee has the obligation for maintenance
costs on airframes and engines which arise during the term of the lease and in
many lease contracts the lessee makes a full or partial prepayment, calculated
at an hourly rate, into a fund from which maintenance expenditures for major
checks are disbursed. The balance of these funds are included in the provision
for maintenance.
    
 
     Taxation
 
   
     ALPS 94-1 has been granted exempt company status by the Jersey taxation
authorities. It pays an exempt company fee of STGL600 per annum. Taxation is
provided on the profits of the subsidiaries at the current rates.
    
 
     Aircraft
 
   
     In the period ended June 30, 1995 ALPS 94-1 committed to purchase and AerFi
Group plc and its subsidiaries ('AerFi') committed to sell, subject to certain
conditions, 27 aircraft on operating leases.
    
                                      F-10
<PAGE>   163
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
                STATEMENT OF ACCOUNTING POLICIES -- (CONTINUED)
 
   
ALPS 94-1 agreed to purchase the aircraft on August 24, 1994 (the Closing Date)
for a price equal to the Initial Appraised Value of the aircraft. It was agreed
that the aircraft would be delivered to ALPS 94-1 at agreed dates (the Delivery
Dates) at which time the purchase price was paid.
    
 
   
     In the period from the Closing Date to the Delivery Date ALPS 94-1 received
full credit for the rental income receivable under each operating lease and
AerFi received full credit for the investment earnings on the purchase price of
the aircraft. The amounts were settled through an adjustment in the funds paid
by ALPS 94-1 to AerFi at the time of aircraft delivery. The net effect is that
at the time the aircraft were delivered both ALPS 94-1 and AerFi were in the
same financial position as they would have been had the aircraft been delivered
on the Closing Date.
    
 
   
     The purchase of the aircraft was deemed to occur at the Closing Date rather
than on the Delivery Date when the change in legal ownership took place
reflecting the commercial substance of this transaction outlined above. Under
U.S. GAAP the purchase of the aircraft is deemed to occur on Delivery Date when
the change in legal ownership takes place (see Notes 22 to 25 for the
reconciliation between U.K. and U.S. GAAP).
    
 
   
     Aircraft are stated at cost less accumulated depreciation less permanent
diminutions in value. Cost comprises the net purchase price of the aircraft
acquired by ALPS 94-1.
    
 
   
     Under U.S. GAAP, transfers of assets and liabilities between ALPS 94-1 and
AerFi have all been accounted for on a historical cost basis, because all such
transfers of assets and liabilities are among entities within a single
consolidated group. Accordingly the aircraft are recorded at AerFi's amortised
cost at the Delivery Date (Amortised Cost). The difference between the Initial
Appraised Value and Amortised Cost is considered to be a distribution to AerFi.
    
 
   
     In the year ended June 30, 1997 the company changed its estimates of
depreciation rates to more accurately reflect the allocation of the cost of the
asset purchases over the estimated useful economic life of these assets. In
prior periods, aircraft were depreciated at rates calculated to write-off the
cost of the assets to the company to a Nil residual value over their estimated
economic useful lives of 25 years from the Closing Date. Depreciation rates for
aircraft of 2% for the first 15 years and 7% thereafter were applied. The
revised method of calculating depreciation is to depreciate aircraft at rates
calculated to write off the cost of the assets to ALPS 94-1 to a residual value
of 15%, on a straight line basis, over their estimated economic useful lives of
25 years from the date of manufacture.
    
 
   
     The changes in these estimates were considered necessary because of
developments in the industry at that time, including the bankruptcy of one major
manufacturer, the expected acquisition of MDC by Boeing, significant
manufacturer discounting of new aircraft and the announcement of a new
generation of Boeing aircraft. As a result of these developments the directors
considered that (i) the allocation of cost should be revised to a straight line
basis (rather than the previous lower allocations in earlier years) and (ii)
additional depreciation reflecting the impact of adopting the revised estimates,
should be charged reflecting the permanent impairment in value of the aircraft
because of the effect of industry circumstances referred to above on ALPS 94-1's
fleet.
    
 
   
     Under U.S. GAAP, for all periods, aircraft are depreciated on a straight
line basis so as to write-off the cost of the assets to a residual value of 15%
over a period of 25 years from the date of manufacture.
    
 
     Where purchase option agreements exist to the benefit of the lessee,
aircraft are depreciated to the purchase option price on a straight-line basis
provided that this would result in a higher depreciation charge than that
arrived at by applying the standard method.
 
                                      F-11
<PAGE>   164
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
                STATEMENT OF ACCOUNTING POLICIES -- (CONTINUED)
 
     Additional charges are made to reduce the book value of specific assets to
fair market value where a permanent diminution in value is considered to have
occurred. Where fair market value is greater than book value no adjustment is
made.
 
   
     Fair market value is assessed by the directors, consistent with the going
concern basis of preparation of the financial statements, and reflects the
underlying economic value of aircraft and engines in normal market conditions
(where supply and demand are in reasonable equilibrium) and assumes adequate
time for a sale and a willing buyer and seller. Short-term fluctuations in the
market place are disregarded and it is assumed that there is no necessity to
dispose of a significant number of aircraft simultaneously or to dispose of
aircraft quickly. In forming their assessment of fair market value the directors
have taken into consideration independent valuations of aircraft in the
portfolio, together with the directors' assessment of aircrafts' current
maintenance status and maintenance reserves.
    
 
   
     For US GAAP purposes, ALPS 94-1 adopted FASB Statement No. 121 "Accounting
for the Impairment of Long-lived Assets and for Long-lived Assets to be disposed
of" as of July 1, 1996. FASB Statement No. 121 requires that long-lived assets
and certain identifiable intangibles to be held and used by an entity be
reviewed for impairment whenever events or changes in circumstances indicate
that the carrying amount of an asset may not be recoverable. In performing the
review for recoverability, the directors' estimated the future cash flows
expected to result from the use of the asset and its eventual disposition. If
the sum of the expected future cash flows (undiscounted and without interest
charges) is less than the carrying amount of the asset, an impairment loss is
recognised. This statement did not materially change the carrying value of ALPS
94-1's assets in the period when it was first applied or in previous periods.
    
 
   
     Cash and liquid resources
    
 
   
     Substantially all of ALPS 94-1's cash and commercial paper balances are
held for specific purposes under the terms of the Deed of Charge.
    
 
   
     For the purposes of the cash flow statements cash represents amounts
available on demand and liquid resources comprise other cash and commercial
paper.
    
 
   
     While the cash balances held by ALPS 94-1 are held for specific purposes
they may be applied for these purposes on demand and are classified as cash in
the cash flow statement.
    
 
     Indebtedness
 
   
     Repayment of principal amounts of the Class E Note and accrued interest
thereon are dependent upon funds being available to meet such liabilities as
they fall due. In addition the Class E Note has a premium interest rate attached
to it to capture any potential profits made by ALPS 94-1. Any losses are borne
by the Noteholders and, accordingly an amount equivalent to such losses,
including the diminution in value of aircraft, has been released from the
carrying value of the debt and credited to the statement of operations. Such
amounts are included as contingent liabilities (see Note 29).
    
 
   
     New Accounting Standards not yet effective
    
 
   
     The company will be required to adopt the provisions of Financial Reporting
Standard No. 12 "Provisions, Contingent Liabilities and Contingent Assets" for
all financial periods ending on or after March 23, 1999. Management are
currently assessing the impact, if any, that this Standard will have on its
adoption by the company.
    
 
                                      F-12
<PAGE>   165
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
                STATEMENT OF ACCOUNTING POLICIES -- (CONTINUED)
 
     Under Jersey company law, the financial statements are required to present
a true and fair view in accordance with generally accepted accounting
principles. The Foreword to accounting standards used by the United Kingdom
Accounting Standards Board states that the requirements of an accounting
standard should be departed from to the extent necessary to give a true and fair
view.
 
   
     Under Financial Reporting Standard 4 (FRS4), ALPS 94-1 would be required to
maintain the liabilities for the principal and interest contingently payable
until such time as the obligation is extinguished. The directors of ALPS 94-1
believe that the adoption of this aspect of FRS4 would result in the financial
statements not presenting a true and fair view. The capital structure of ALPS
94-1 incorporates various levels of debt with a minimal equity share capital,
the intention being from the outset that the equity shareholders would not bear
any of the losses which ALPS 94-1 may suffer on sales of the aircraft and other
assets, these losses being borne by the various debt holders. The financial
effect of this departure is as detailed in Note 6 and Note 29.
    
 
   
     Under U.S. GAAP, the liability for principal and interest remains until
such time as the obligation is extinguished. (See Notes 22 to 25 for the
reconciliation between U.K. and U.S. GAAP.)
    
 
                                      F-13
<PAGE>   166
 
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
                 NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
 
   
1  CASH AND COMMERCIAL PAPER
    
 
   
<TABLE>
<CAPTION>
                                                                30 JUNE, 1998    30 JUNE, 1997
                                                                -------------    -------------
                                                                U.S.$'000          U.S.$'000
<S>                                                             <C>              <C>
Cash........................................................       51,608           51,474
Commercial paper............................................       36,686           39,821
                                                                    -----            -----
                                                                   88,294           91,295
                                                                    =====            =====
</TABLE>
    
 
   
     Substantially all of the cash and commercial paper balances at June 30,
1997 and 1998 are held for specific purposes under the terms of the Deed of
Charge.
    
 
   
2  ACCOUNTS RECEIVABLE
    
 
   
<TABLE>
<CAPTION>
                                                                30 JUNE, 1998    30 JUNE, 1997
                                                                -------------    -------------
                                                                U.S.$'000          U.S.$'000
<S>                                                             <C>              <C>
Trade receivables...........................................        2,040            2,405
Non-trade receivables.......................................          282              737
                                                                    -----            -----
                                                                    2,322            3,142
                                                                    =====            =====
</TABLE>
    
 
     Trade receivables comprise amounts in respect of rent and maintenance
payments due from lessees.
 
   
     As at June 30, 1998 two lessees accounted for 73% (1997: 38%) and 19%
(1997: 3%) respectively of trade receivables. No other lessee accounted for
greater than 10% of trade receivables at June 30, 1998 and June 30, 1997.
    
 
     Non-trade receivables comprise prepayments.
 
                                      F-14
<PAGE>   167
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
   
3  AIRCRAFT
    
 
   
<TABLE>
<CAPTION>
                                                                JUNE 30, 1998    JUNE 30, 1997
                                                                -------------    -------------
                                                                U.S.$'000          U.S.$'000
<S>                                                             <C>              <C>
COST
Beginning of year...........................................       975,179          975,179
Additions...................................................         1,132               --
Disposals...................................................       (27,023)              --
                                                                  --------         --------
End of year.................................................       949,288          975,179
                                                                  --------         --------
DEPRECIATION
Beginning of year...........................................      (108,583)         (36,136)
Charge for the year.........................................       (37,826)         (38,062)
Additional charge in year...................................            --          (34,385)
Disposal....................................................         5,931               --
                                                                  --------         --------
End of year.................................................      (140,478)        (108,583)
                                                                  --------         --------
PROVISION FOR PERMANENT DIMINUTION IN VALUE
Beginning of year...........................................       (12,000)         (12,000)
Charge for the year.........................................        (8,720)              --
Disposal....................................................        12,000               --
                                                                  --------         --------
End of year.................................................        (8,720)         (12,000)
                                                                  --------         --------
NET BOOK VALUE
Beginning of year...........................................       854,596          927,043
                                                                  --------         --------
End of year.................................................       800,090          854,596
                                                                  ========         ========
</TABLE>
    
 
   
     Cost represents the purchase price of aircraft acquired by ALPS 94-1 which
was based on the independent appraisal values of the portfolio of 27 aircraft at
August 24, 1994.
    
 
   
     The directors of ALPS 94-1 determine on an annual basis whether a permanent
diminution in value of ALPS 94-1's aircraft has occurred. Where a permanent
diminution in value is considered to have occurred provision is made based upon
market appraisals of the individual aircraft prepared by three professional
appraisal firms, together with other factors such as maintenance reserves held
by ALPS 94-1, the creditworthiness of particular lessees, current rental values
compared to open market and the length of remaining lease term.
    
 
   
     In the year ended June 30, 1998, the directors made a provision of
U.S.$8.72 million to reflect a permanent diminution in value against a
particular aircraft type.
    
 
   
     In the year ended June 30, 1997, additional depreciation was charged of
U.S.$34.4 million as explained in "Statement of Accounting Policies: Aircraft".
    
 
   
     In the year ended June 30, 1996, the directors made a provision of $12
million to reflect a permanent diminution in value against a particular aircraft
in its fleet. This aircraft was disposed of to AerFi during the year and this
provision was included in determining the profit on the disposal of this
aircraft of U.S.$2.4 million.
    
 
   
     ALPS 94-1's aircraft, along with ALPS 94-1's other assets, have charges
attached to them such that they represent security for the Notes issued (see
Note 6).
    
 
                                      F-15
<PAGE>   168
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
   
4  OPERATING LEASES
    
 
   
     All the aircraft are leased on operating leases to 19 lessees as at June
30, 1998 (1997: 19). Rentals on certain of the leases are variable in accordance
with prevailing interest rates.
    
 
   
     The following is a schedule of contracted future rentals, by years, on
operating leases as of June 30, 1998. The interest rates prevailing at June 30,
1998 have been applied in determining rentals that are variable in accordance
with prevailing interest rates.
    
 
   
<TABLE>
<CAPTION>
                    YEAR ENDING JUNE 30                       U.S.$'000
                    -------------------                       ---------
<S>                                                           <C>
1999........................................................    83,622
2000........................................................    51,021
2001........................................................    28,467
2002........................................................    20,858
2003........................................................    10,013
                                                               -------
                                                               193,981
                                                               =======
</TABLE>
    
 
     There are no contingent rentals.
 
     The leases have charges attached to them such that they represent security
for the Notes issued.
 
   
     Contracted future rentals for the year ended 30 June 1998 was $97,590,000.
Actual revenue earned was $101,513,000. The principal reason for the difference
is due to new leases executed during the year and changes in the interest rates.
    
 
   
5  ACCRUED EXPENSES AND OTHER LIABILITIES
    
 
   
<TABLE>
<CAPTION>
                                                                JUNE 30, 1998    JUNE 30, 1997
                                                                -------------    -------------
                                                                U.S.$'000            U.S.$'000
<S>                                                             <C>              <C>
Accrued expenses and other liabilities comprise:
Deferred income.............................................        7,791            5,382
Interest on Notes...........................................        7,241            5,574
Exceptional item -- makewhole premium (Note 11).............       11,603               --
Exceptional item -- termination fee (Note 11)...............       12,700               --
Taxation....................................................          (17)             (50)
Other accruals..............................................        7,685            5,183
                                                                   ------           ------
                                                                   47,003           16,089
                                                                   ======           ======
</TABLE>
    
 
                                      F-16
<PAGE>   169
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
   
6  INDEBTEDNESS
    
 
     a) Principal
 
   
     The purchase of the aircraft was funded by the sale of Trust Notes and the
sale of Subordinated Notes (together the 'Notes'). The Notes are secured by a
first priority security interest in ALPS 94-1's assets, which consist of the
aircraft, the leases and amounts on deposit in certain accounts.
    
 
   
<TABLE>
<CAPTION>
                                                          JUNE 30, 1998    JUNE 30, 1997    AT ISSUE
                                                          -------------    -------------    ---------
                                                           U.S.$'000           U.S.$'000    U.S.$'000
<S>                                                       <C>              <C>              <C>
TRUST NOTES
  Class A-1 Notes.....................................        98,349          121,944        172,000
  Class A-2 Notes.....................................        73,108          101,372        139,404
  Class A-3 Notes.....................................       156,167          156,167        156,167
  Class A-4 Notes.....................................       140,122          140,122        140,122
  Class B-1 Notes.....................................        43,770           43,770         44,106
  Class B-2 Notes.....................................        43,994           43,994         44,106
  Class C Notes.......................................        86,171           86,171         86,610
SUBORDINATED NOTES
  Class D Note........................................        42,739           49,988         71,185
  Class E Note and capitalised E note interest........       197,966          180,887        144,451
  Less: restricted by income availability.............       (90,989)         (47,662)            --
  Less: extinguished by a permanent loss..............        (5,258)          (5,258)            --
                                                             -------          -------        -------
  Net Class E Note Principal..........................       101,719          127,967        144,451
                                                             -------          -------        -------
                                                             786,139          871,495        998,151
                                                             =======          =======        =======
</TABLE>
    
 
   
     Repayments of principal on the Trust Notes and Class D Note principal are
made monthly and commenced in October 1994. As a consequence of the ALPS 94-1
refinancing which was completed on July 15, 1998 the Notes are classified as
repayable within one year (see Note 30).
    
 
   
     The repayment of principal on the Trust Notes and the Class D Note is
dependent upon the cash available at the monthly payment date and is governed by
the Deed of Charge of Assignment and Priorities entered into by ALPS 94-1 on the
Closing Date (the 'Deed of Charge').
    
 
     The repayment of Class E Note principal is not due until the Trust Notes
and Class D Note have been fully repaid.
 
   
     In addition the Class E Note has a premium interest rate attached to it to
capture any potential profits made by ALPS 94-1. Consequently, the equity
shareholders will not participate in any losses of ALPS 94-1 beyond the share
capital, and, accordingly an amount equivalent to such losses, including the
diminution in value of aircraft, has been released from the carrying value of
the debt and credited to the statement of operations. In addition, the provision
for a permanent diminution in value in aircraft values is treated as a permanent
loss under the Deed of Charge and a proportion of the Class E Note principal is
extinguished based upon the terms of the Deed of Charge.
    
 
                                      F-17
<PAGE>   170
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
   
6  INDEBTEDNESS (CONTINUED)
    
     b) Interest
 
     Class A-1 Notes bear interest at LIBOR plus 0.48%, payable monthly in
arrears.
 
   
    Class A-2 Notes bear interest at 7.15%, payable monthly in arrears,
    increased to 9.15% from November 1997 onwards.
    
 
    Class A-3 Notes bear interest at LIBOR plus 0.45%, payable monthly in
    arrears.
 
     Class A-4 Notes bear interest at 7.80%, payable monthly in arrears.
 
     Class B-1 Notes bear interest at LIBOR plus 1.15%, payable monthly in
arrears.
 
     Class B-2 Notes bear interest at 8.20%, payable monthly in arrears.
 
     Class C Notes bear interest at 9.35%, payable monthly in arrears.
 
     The Class D Note bears interest at LIBOR plus 5.50%. Interest is payable
monthly in arrears and commenced in October 1994, subject to available cash.
Interest accrued but not paid will be added to the principal outstanding and
will accrue interest until paid.
 
     The Class E Note bears interest at 10.00%. The interest accrues monthly in
arrears. With the exception of certain circumstances the Class E permitted
interest amount will not be paid until the payment date following the fourth
anniversary of the Closing Date.
 
     c) Debt maturity
 
     Upon the Final Maturity Date, the cash available will be applied to
principal in the following order:
 
     1. Class A Notes principal
 
     2. Class B Notes principal
 
     3. Class C Notes principal
 
     4. Class D Note principal
 
     5. Class E Note principal
 
   
7  PROVISION FOR MAINTENANCE
    
 
   
<TABLE>
<CAPTION>
                                                                JUNE 30, 1998    JUNE 30, 1997
                                                                -------------    -------------
                                                                U.S.$'000          U.S.$'000
<S>                                                             <C>              <C>
Opening balance.............................................       46,247           39,544
Receivable during year......................................        8,021           12,558
Repaid during year..........................................       (9,959)          (5,855)
                                                                   ------           ------
Closing balance.............................................       44,309           46,247
                                                                   ------           ------
Due within one year.........................................        6,512            1,604
Due after one year..........................................       37,797           44,643
                                                                   ------           ------
                                                                   44,309           46,247
                                                                   ======           ======
</TABLE>
    
 
                                      F-18
<PAGE>   171
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
   
8  SECURITY DEPOSITS
    
 
   
     Security deposits of U.S.$13,255,000 (1997: U.S.$15,202,000) are held as
security for obligations in accordance with the terms of certain leases. The
deposits are held as cash or commercial paper and are included within the cash
and commercial paper balances (see Note 1).
    
 
   
9  SHARE CAPITAL
    
 
     Called up share capital comprises:
 
   
<TABLE>
<CAPTION>
                                                                JUNE 30, 1998    JUNE 30, 1997
                                                                -------------    -------------
                                                                    U.S.$            U.S.$
<S>                                                             <C>              <C>
AUTHORISED
15,000 ordinary shares of U.S.$1 each.......................       15,000           15,000
                                                                   ------           ------
ISSUED AND FULLY PAID
10 ordinary shares of U.S.$1 each...........................           10               10
                                                                   ------           ------
</TABLE>
    
 
   
     ALPS 94-1 issued 10 ordinary shares at $1 each on June 3, 1994.
    
 
   
10  REVENUES AND CONCENTRATION OF CREDIT RISK
    
 
     a) Distribution of revenues by geographic area
 
   
<TABLE>
<CAPTION>
                                            YEAR ENDED           YEAR ENDED           YEAR ENDED
                                           JUNE 30, 1998        JUNE 30, 1997        JUNE 30, 1996
                                         -----------------    -----------------    -----------------
                                         U.S.$'000     %      U.S.$'000     %      U.S.$'000     %
<S>                                      <C>          <C>     <C>          <C>     <C>          <C>
Europe...............................      45,351     44.7      44,927     43.9      46,164     45.2
North America........................       4,328      4.3       3,693      3.6       3,673      3.6
South/Central America................      22,232     21.9      19,296     18.9      14,324     14.0
Asia/Pacific.........................      29,602     29.1      34,205     33.6      37,861     37.2
                                          -------     ----     -------     ----     -------     ----
                                          101,513      100     102,121      100     102,022      100
                                          =======     ====     =======     ====     =======     ====
</TABLE>
    
 
     All revenues are derived from aircraft leasing.
 
     b) Concentration of credit risk
 
     Credit risk with respect to trade accounts receivable is generally
mitigated due to the number of lessees and their dispersal across different
geographic areas.
 
   
     ALPS 94-1 manages its exposure to particular countries in part through
obtaining security from lessees by way of deposits, letters of credit and
guarantees. In addition ALPS 94-1 maintains Political Risk Insurance in respect
of certain lessees.
    
 
   
     ALPS 94-1 continually evaluates the financial position of lessees and,
based on this evaluation, the amounts outstanding and the available security,
makes an appropriate provision for doubtful debts.
    
 
   
     As at June 30, 1998, one lessee accounted for 15% (1997: 12%; 1996: 12%) of
ALPS 94-1's lease revenues and another accounted for 12% (1997: 11%) of lease
revenues. No other lessee accounted for greater than 10% of ALPS 94-1's revenues
for the years ended June 30, 1998, 1997 and 1996.
    
 
                                      F-19
<PAGE>   172
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
   
11  EXCEPTIONAL ITEMS
    
 
   
<TABLE>
<CAPTION>
                                                        YEAR ENDED       YEAR ENDED       YEAR ENDED
                                                       JUNE 30, 1998    JUNE 30, 1997    JUNE 30, 1996
                                                       -------------    -------------    -------------
                                                       U.S.$'000          U.S.$'000        U.S.$'000
<S>                                                    <C>              <C>              <C>
Additional depreciation(i).........................           --           34,385               --
Provision for permanent diminution in value of
  aircraft (Note 3)................................        8,720               --           12,000
Makewhole premium(ii)..............................       11,603               --               --
Termination fee(ii)................................       12,700               --               --
                                                          ------           ------           ------
                                                          33,023           34,385           12,000
                                                          ======           ======           ======
</TABLE>
    
 
- ---------------
 
   
(i) The additional depreciation charge in the year ended June 30, 1997 related
     to a change in calculating depreciation estimates as explained in
     "Statement of Accounting Policies: Aircraft".
    
 
   
(ii) Prior to the year end the directors approved a transaction involving the
     sale of the capital stock of ALPS 94-1 (see Note 30). In connection with
     this transaction, ALPS 94-1 has accrued obligations which the directors had
     committed ALPS 94-1 to before the year end in relation to the makewhole
     premium attaching to the early redemption of existing Notes issued by ALPS
     94-1 and the termination fee payable to the service provider.
    
 
   
12  NET INTEREST EXPENSE
    
 
   
<TABLE>
<CAPTION>
                                                        YEAR ENDED       YEAR ENDED       YEAR ENDED
                                                       JUNE 30, 1998    JUNE 30, 1997    JUNE 30, 1996
                                                       -------------    -------------    -------------
                                                       U.S.$'000          U.S.$'000        U.S.$'000
<S>                                                    <C>              <C>              <C>
Interest expense on Notes..........................       73,560           73,975           76,587
Net interest income................................       (3,775)          (2,938)          (3,011)
                                                          ------           ------           ------
                                                          69,785           71,037           73,576
                                                          ======           ======           ======
</TABLE>
    
 
   
     The interest rate payable on the Class A-2 Notes increased to 9.15% from
November 15, 1997, the expected final payment date for such Class.
    
 
   
13  OTHER EXPENSES
    
 
   
<TABLE>
<CAPTION>
                                                        YEAR ENDED       YEAR ENDED       YEAR ENDED
                                                       JUNE 30, 1998    JUNE 30, 1997    JUNE 30, 1996
                                                       -------------    -------------    -------------
                                                       U.S.$'000          U.S.$'000        U.S.$'000
<S>                                                    <C>              <C>              <C>
Servicer's fees....................................        2,894            2,899            2,893
Political Risk Insurance...........................          425              737            1,210
Administration fees................................          412              441              503
Aircraft leasing costs.............................        1,914               --               --
Legal and professional fees........................          440              402              323
Directors' and Officers' Insurance.................          295              350              391
Directors' fees and expenses.......................          100              122              150
Cash manager's fees................................           76               66               41
Audit and tax fees.................................           43               36               70
                                                          ------           ------           ------
                                                           6,599            5,053            5,581
                                                          ======           ======           ======
</TABLE>
    
 
                                      F-20
<PAGE>   173
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
   
14  NET INCOME/(LOSS) BEFORE PROVISION FOR TAXES
    
 
   
     a) Net income/(loss) before provision for taxes is stated after charging:
    
 
   
<TABLE>
<CAPTION>
                                                        YEAR ENDED       YEAR ENDED       YEAR ENDED
                                                       JUNE 30, 1998    JUNE 30, 1997    JUNE 30, 1996
                                                       -------------    -------------    -------------
                                                       U.S.$'000          U.S.$'000        U.S.$'000
<S>                                                    <C>              <C>              <C>
Directors' remuneration............................          100              100              100
                                                          ------           ------           ------
                                                             100              100              100
                                                          ======           ======           ======
</TABLE>
    
 
     b) Directors and Officers' Insurance
 
   
     As approved at an Extraordinary General Meeting of ALPS 94-1, Directors'
and Officers' Insurance has been implemented. Directors also have the protection
of an unsecured indemnity from ALPS 94-1 in respect of claims relating to them
in their capacity as directors.
    
 
   
15  (PROVISION)/BENEFIT FOR TAXES
    
 
   
<TABLE>
<CAPTION>
                                                        YEAR ENDED       YEAR ENDED       YEAR ENDED
                                                       JUNE 30, 1998    JUNE 30, 1997    JUNE 30, 1996
                                                       -------------    -------------    -------------
                                                       U.S.$'000          U.S.$'000        U.S.$'000
<S>                                                    <C>              <C>              <C>
Corporation tax -- (provision)/benefit.............         (33)             143             (200)
                                                            ===              ===             ====
</TABLE>
    
 
   
     Taxation provisions shown relate to the activities of subsidiaries, levied
by local jurisdictions. The tax benefit in the year ended June 30, 1997 relates
to a subsequent approval of a lower prior period tax charge levied by one
jurisdiction.
    
 
   
16  BASIC LOSS PER ORDINARY SHARE
    
 
   
     The calculation of basic loss per ordinary share has been computed by
dividing the profit or loss for the year of U.S.$Nil (1997: Nil; 1996: loss of
U.S.$666,000) by the weighted average number of ordinary shares outstanding
during the year of 10 shares for all periods.
    
 
   
17  STAFF COSTS AND NUMBERS
    
 
   
     ALPS 94-1 has no employees.
    
 
   
18  SUBSIDIARY COMPANIES
    
 
   
     ALPS 94-1 has the following subsidiary companies:
    
 
<TABLE>
<CAPTION>
                                  COUNTRY OF                                             % OF SHARES
NAME                              INCORPORATION                    BUSINESS                 HELD
- ----                              -------------                    --------              -----------
<S>                               <C>                  <C>                               <C>
Pergola Limited................   Ireland              Aircraft leasing and sub-leasing     100%
ALPS 94-1 (Belgium) N.V........   Belgium              Aircraft leasing and sub-leasing     100%
ALPS 94-1 (France) S.A.R.L. ...   France               Dormant                              100%
</TABLE>
 
   
19  DIVIDENDS
    
 
   
     Under the Articles of Association, the shareholders are entitled to receive
a fixed cumulative preferential dividend of U.S.$1,500 per annum out of the
profits of ALPS 94-1. This dividend has not been declared in the current year.
    
 
                                      F-21
<PAGE>   174
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
   
20  SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
    
 
   
<TABLE>
<CAPTION>
                                                        YEAR ENDED       YEAR ENDED       YEAR ENDED
                                                       JUNE 30, 1998    JUNE 30, 1997    JUNE 30, 1996
                                                       -------------    -------------    -------------
                                                       U.S.$'000          U.S.$'000        U.S.$'000
<S>                                                    <C>              <C>              <C>
Cash paid in respect of:
Interest -- Trust Notes............................       49,191           50,574           53,558
Interest -- Subordinated Notes.....................        5,624            9,298           10,444
Income taxes.......................................           --               --              174
                                                          ------           ------           ------
                                                          54,815           59,872           64,176
                                                          ======           ======           ======
</TABLE>
    
 
   
21  COMMITMENTS
    
 
   
     ALPS 94-1 has no long-term contracts other than those with its service
providers (see Note 28) and lessees (see Note 4).
    
 
   
22  SUMMARY OF DIFFERENCES BETWEEN UNITED KINGDOM AND UNITED STATES GENERALLY
    ACCEPTED ACCOUNTING PRINCIPLES
    
 
     The consolidated financial statements are prepared in accordance with U.K.
GAAP which differ significantly in certain respects from U.S. GAAP. These
significant differences are described below:
 
     a) Aircraft
 
   
     The consolidated financial statements are prepared applying Financial
Reporting Standard No. 5 'Reporting the Substance of Transactions'. This
accounting standard defines assets as the right or other access to future
economic benefits controlled by an entity arising as a result of transactions or
events. ALPS 94-1 has rights to access future economic benefits arising from the
aircraft at the Closing Date even though it does not become the legal owner of
the aircraft until they are delivered. Therefore the aircraft are included at
their initial valuation or purchase price at the Closing Date and depreciated
from that date. Similarly, rental income has been recognised as receivable from
the Closing Date.
    
 
   
     The accounting treatment under U.S. GAAP (as explained under Statement of
Accounting Policies: Aircraft) would be to record the cost of the aircraft at
AerFi's Amortised Cost at the Delivery Date and to depreciate the aircraft and
recognize rental income from the Delivery Date. Effective from 1 July 1996 the
method of depreciation is the same for both U.K. and U.S. GAAP. Prior to that
date under U.K. GAAP, depreciation was provided at 2% for the first 15 years and
7% thereafter whereas under U.S. GAAP prior to 1997, the aircraft are
depreciated on a straight-line basis so as to write-off the cost of the assets
over a period of 25 years. Under U.K. GAAP, a provision for additional
depreciation was made in 1997 to reflect the impact of adopting the revised
estimates of accumulated depreciation in respect of prior periods. Under U.S.
GAAP, no such additional depreciation charge arises.
    
 
     The differences between income recorded under U.K. GAAP and U.S. GAAP
therefore relate to:
 
     1. Depreciation from the Closing Date to Delivery Date.
 
     2. Rental income from the Closing Date to Delivery Date.
 
     3. Investment income earned from the Closing Date to Delivery Date.
 
     4. Difference in depreciation of Amortised Cost of aircraft under U.S. GAAP
        and initial appraised value under U.K. GAAP.
 
                                      F-22
<PAGE>   175
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
   
22  SUMMARY OF DIFFERENCES BETWEEN UNITED KINGDOM AND UNITED STATES GENERALLY
    ACCEPTED ACCOUNTING PRINCIPLES (CONTINUED)
    
   
     5. Difference in depreciation under U.S. GAAP and U.K. GAAP.
    
 
   
     6. Difference in additional depreciation resulting from the change in the
        depreciation method under U.K. GAAP.
    
 
   
     7. Difference in cost of aircraft disposed under U.S. GAAP and U.K. GAAP.
    
 
   
     b) Cash flows
    
 
   
     In accordance with U.K. GAAP, ALPS 94-1 complies with Financial Reporting
Standard No. 1 (Revised) "Cash flow Statements" ("FRS 1"). Its objective and
principles are similar to those set out in SFAS No. 95 "Statement of Cash
Flows". The principal difference between the standards is in respect of
classification. Under FRS1, ALPS 94-1 presents its cash flows for: (a) operating
activities; (b) return on investments and servicing of finance; (c) taxation;
(d) capital expenditure and financial investment; (e) acquisitions and
disposals; (f) management of liquid resources and (g) financing activities. SFAS
No. 95 requires only three categories of cash flow activity; (a) operating; (b)
investing; and (c) financing.
    
 
     Cash flows arising from taxation and returns on investments and servicing
of finance under FRS1 are included as operating activities under SFAS No. 95.
Cash flows arising from capital expenditure under FRS1 are included as investing
activities under SFAS No. 95.
 
   
     For the purposes of cash flows under U.S. GAAP, ALPS 94-1 considers all
highly liquid deposits with maturity of three months or less to be cash
equivalents. Under U.K. GAAP, cash represents amounts available on demand and
liquid resources comprise other cash and commercial paper.
    
 
     c) Indebtedness
 
   
     The principal repayment of the Class E Note and accrued interest thereon is
dependent upon cash available. In addition the Class E Note has a premium
interest rate attached to it to capture any potential profits made by ALPS 94-1
and consequently, the equity shareholders will not participate in any losses of
ALPS 94-1 beyond the share capital. Such losses are borne by the Noteholders
and, accordingly an amount equivalent to such losses, including the diminution
in value of aircraft, has been released from the carrying value of the debt and
credited to the statement of operations under U.K. GAAP. Such amounts are
included as contingent liabilities (see Note 29). Under U.S. GAAP the liability
for the principal amount remains until such time as the obligation is
extinguished.
    
 
     d) Shareholders' equity
 
   
     The differences between shareholders' equity under U.K. GAAP and U.S. GAAP
relate to the recording of the aircraft at Amortised Cost. The difference
between the Initial Appraised Value and the Amortised Cost is deemed a
distribution to AerFi on the Closing Date, which results in a negative charge to
shareholders' equity.
    
 
                                      F-23
<PAGE>   176
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
   
23  RECONCILIATION OF INCOME AS STATED IN ACCORDANCE WITH U.K. GAAP TO NET
    INCOME IN ACCORDANCE WITH U.S. GAAP
    
 
   
<TABLE>
<CAPTION>
                                                        YEAR ENDED       YEAR ENDED       YEAR ENDED
                                                       JUNE 30, 1998    JUNE 30, 1997    JUNE 30, 1996
                                                       -------------    -------------    -------------
                                                        U.S.$'000           U.S.$'000        U.S.$'000
<S>                                                    <C>              <C>              <C>
Retained loss in accordance with U.K. GAAP.........            --               --             (666)
ITEMS HAVING THE EFFECT OF INCREASING REPORTED
  INCOME...........................................
  Depreciation from the Closing Date to the
     Delivery Date.................................            --               --              141
  Investment income earned from the Closing Date to
     Delivery Date.................................            --               --              374
  Exceptional item: additional depreciation
     charge........................................            --           34,385               --
  Difference in depreciation of amortised cost of
     aircraft......................................         5,773            5,723          (14,501)
  Difference in permanent diminution in value of
     aircraft......................................         8,200               --               --
ITEMS HAVING THE EFFECT OF DECREASING REPORTED
  INCOME
  Difference in book value of aircraft sold........        (2,226)              --               --
  Rental from the Closing Date to the Delivery
     Date..........................................            --               --             (729)
  Reduction in indebtedness........................       (43,327)         (41,015)          (6,647)
                                                          -------         --------         --------
Net loss in accordance with U.S. GAAP..............       (31,580)            (907)         (22,028)
Accumulated deficit at beginning of year...........       (37,785)         (36,878)         (14,850)
                                                          -------         --------         --------
Accumulated deficit at end of year.................       (69,365)         (37,785)         (36,878)
Loss per ordinary share for the year as so
  adjusted.........................................        (3,158)           (90.7)        (2,202.8)
                                                          -------         --------         --------
Weighted average number of ordinary shares
  outstanding......................................            10               10               10
                                                          -------         --------         --------
</TABLE>
    
 
   
24  RECONCILIATION OF SHAREHOLDERS' EQUITY AS STATED IN ACCORDANCE WITH U.K.
    GAAP TO SHAREHOLDERS' EQUITY IN ACCORDANCE WITH U.S. GAAP
    
 
   
<TABLE>
<CAPTION>
                                                        YEAR ENDED       YEAR ENDED       YEAR ENDED
                                                      JUNE 30, 1998     JUNE 30, 1997    JUNE 30, 1996
                                                      --------------    -------------    -------------
                                                        U.S.$'000           U.S.$'000        U.S.$'000
<S>                                                   <C>               <C>              <C>
Shareholders' equity in accordance with U.K.
  GAAP............................................             --               --               --
ITEMS HAVING THE EFFECT OF AMENDING SHAREHOLDERS'
  EQUITY
  Distribution to AerFi at Closing Date...........       (147,588)        (147,588)        (147,588)
  Cumulative difference in net income between U.K.
     GAAP and U.S. GAAP (see Note 23).............        (69,365)         (37,785)         (36,878)
                                                         --------         --------         --------
Shareholders' equity in accordance with U.S.
  GAAP............................................       (216,953)        (185,373)        (184,466)
                                                         --------         --------         --------
</TABLE>
    
 
                                      F-24
<PAGE>   177
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
   
25  RECONCILIATION OF AIRCRAFT STATED IN ACCORDANCE WITH U.K. GAAP TO AIRCRAFT
    STATED IN ACCORDANCE WITH U.S. GAAP
    
 
   
<TABLE>
<CAPTION>
                                                    U.S. GAAP                         U.K. GAAP
                                          ------------------------------    ------------------------------
                                          JUNE 30, 1998    JUNE 30, 1997    JUNE 30, 1998    JUNE 30, 1997
                                          -------------    -------------    -------------    -------------
                                          U.S.$'000          U.S.$'000        U.S.$'000        U.S.$'000
<S>                                       <C>              <C>              <C>              <C>
COST
Cost....................................     975,179          975,179          975,179          975,179
Step up cost............................    (147,588)        (147,588)              --               --
                                            --------         --------         --------         --------
Beginning of year.......................     827,591          827,591          975,179          975,179
Additions...............................       1,132               --            1,132               --
Disposal................................     (29,086)              --          (27,023)              --
                                            --------         --------         --------         --------
End of year.............................     799,637          827,591          949,288          975,179
                                            --------         --------         --------         --------
DEPRECIATION
Beginning of year.......................     (81,119)         (48,780)        (108,583)         (36,136)
Provision in year.......................     (32,053)         (32,339)         (37,826)         (38,062)
Additional charge in year...............          --               --               --          (34,385)
Disposal................................       5,768               --            5,931               --
                                            --------         --------         --------         --------
End of year.............................    (107,404)         (81,119)        (140,478)        (108,583)
                                            --------         --------         --------         --------
PROVISION FOR PERMANENT DIMINUTION IN VALUE
Beginning of year.......................     (12,000)         (12,000)         (12,000)         (12,000)
Provision in year.......................        (520)              --           (8,720)              --
Disposal................................      12,000               --           12,000               --
                                            --------         --------         --------         --------
End of year.............................        (520)         (12,000)          (8,720)         (12,000)
                                            --------         --------         --------         --------
NET BOOK VALUE
Beginning of year.......................     734,472          766,811          854,596          927,043
                                            --------         --------         --------         --------
End of year.............................     691,713          734,472          800,090          854,596
                                            --------         --------         --------         --------
</TABLE>
    
 
   
26  FAIR VALUE OF FINANCIAL INSTRUMENTS
    
 
   
     ALPS 94-1 estimates that the fair value of its cash and cash equivalents
and other receivables and payables at June 30, 1998 approximate to the amounts
at which these items are reflected in ALPS 94-1's balance sheet. This is due to
the relatively short-term nature of the instruments and the frequency at which
they reprice.
    
 
   
     The fair value of the A, B and C Notes issued by ALPS 94-1 outstanding at
June 30, 1995, 1996, 1997 and 1998 was $760 million, $729 million, $694 million
and $642 million respectively. The fair value of the D and E Notes cannot be
determined as no public market existed for these Notes. The D Notes were held by
the servicer and the E Notes, which are based on the appraised value of the
aircraft at the Closing Date, represent the holders' residual interest in the
aircraft owned by ALPS 94-1.
    
 
   
27  FOREIGN CURRENCY TRANSACTIONS
    
 
   
     ALPS 94-1's foreign currency transactions are not significant as all
revenues and most costs are denominated in U.S. dollars.
    
 
                                      F-25
<PAGE>   178
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
   
28  RELATED PARTY TRANSACTIONS
    
 
     a) GE Capital Aviation Services Limited (GECAS)
 
   
     GECAS acts as lease manager to ALPS 94-1. In addition to managing ALPS
94-1's aircraft GECAS also manages aircraft owned by GE Capital and its
affiliates and other third parties, including AerFi from whom ALPS 94-1's
aircraft were purchased. GECAS may from time to time have conflicts of interest
in performing its obligations to ALPS 94-1 and other entities to which it
provides management, marketing and other services.
    
 
   
     GECAS receives an annual fee as lease manager which amounted to
U.S.$2,894,000 (1997: U.S.$2,899,000); for the year ended June 30, 1998. GECAS
is an affiliate of GE Capital which holds the Class D Note and has a right to
appoint a representative to the board. GE Capital has not yet indicated any
intention to make such an appointment.
    
 
   
     As explained in Note 1, the GECAS servicing agreement was terminated and a
termination fee of $12,700,000 was paid to GECAS.
    
 
   
     b) On July 15, 1998 AerFi was appointed as Administrative Agent and Cash
Manager to ALPS 94-1.
    
 
   
     c) Mr. E.J. Hansom (Director)
    
 
   
     Mr. E.J. Hansom is the Chief Financial Officer of AerFi and is one of the
representatives on the board appointed by AerFi, as holder of the Class E Note.
ALPS 94-1 purchased its aircraft from AerFi.
    
 
   
     d) Mr. G.A. Robinson (Director)
    
 
   
     Mr. G.A. Robinson performs consulting services from time to time for Air
2000, one of the lessees. Included in aircraft leasing revenue is an amount of
U.S.$5,202,000 (1997: U.S.$5,097,000) in respect of this lessee.
    
 
   
29  CONTINGENT LIABILITIES
    
 
     Principal
 
   
     As detailed in Note 6, certain principal amounts are restricted by
available cash. At the year end certain amounts were restricted by cash and the
liability has been reduced. The amounts represent contingent liabilities which
will become due dependent upon future cash flows.
    
 
   
<TABLE>
<CAPTION>
                                                       JUNE 30, 1998    JUNE 30, 1997    JUNE 30, 1996
                                                       -------------    -------------    -------------
                                                         U.S.$'000        U.S.$'000        U.S.$'000
<S>                                                    <C>              <C>              <C>
Class E Note.......................................       90,989           47,662            6,647
                                                          ------           ------           ------
</TABLE>
    
 
   
30  SUBSEQUENT EVENTS
    
 
   
     Prior to the year end the directors approved a transaction involving the
sale of the capital stock of ALPS 94-1 to a new company, AerCo Limited, and the
early redemption of the existing Notes issued by ALPS 94-1. On June 23, 1998,
AerCo Limited issued an Offering Memorandum in connection with this transaction
and on July 15, 1998, AerCo Limited issued $800 million of Notes in four classes
and used part of the proceeds to acquire the capital stock of ALPS 94-1. As part
of this transaction all of the existing indebtedness of ALPS 94-1 was repaid
including the Class E Note.
    
 
                                      F-26
<PAGE>   179
     AIRCRAFT LEASE PORTFOLIO SECURITIZATION 94-1 LIMITED AND SUBSIDIARIES
 
         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
   
30  SUBSEQUENT EVENTS (CONTINUED)
    
   
     Certain costs attributable to the refinancing of existing Notes issued by
ALPS 94-1 have been accrued in these financial statements (see Note 11)
reflecting the directors commitment to the transaction at the year end. The full
financial effect of this transaction will be dealt with in the financial
statements for the period ended March 31, 1999.
    
 
                                      F-27
<PAGE>   180
 
                          INDEPENDENT AUDITORS' REPORT
 
   
TO THE BOARD OF DIRECTORS OF AERCO GROUP
    
 
   
     We have audited the accompanying balance sheet of the entity as of June 30,
1998 and the related statement of operations and cash flows for the year then
ended.
    
 
RESPECTIVE RESPONSIBILITIES OF DIRECTORS AND AUDITORS
 
   
     The directors of AerCo Group are required to prepare financial statements
for each financial year to give a true and fair view of the statement of net
assets of the entity and of the income and cash flows of the entity for that
year. In preparing the financial statements, the directors are required to
select suitable accounting policies and apply them consistently, make judgements
and estimates that are prudent and reasonable and to prepare the financial
statements on the going concern basis unless it is not appropriate to assume
that the entity will continue in business.
    
 
     It is our responsibility to form an independent opinion, based on our
audit, on those financial statements and to report our opinion to you.
 
BASIS OF OPINION
 
     We conducted our audit in accordance with Auditing Standards issued by the
U.K. Auditing Practices Board which do not differ significantly from U.S.
generally accepted auditing standards.
 
     An audit includes examination, on a test basis, of evidence relevant to the
amounts and disclosures in the financial statements. It also includes an
assessment of the significant estimates and judgements made by the directors in
the preparation of the financial statements and of whether the accounting
policies are appropriate to the circumstances of the entity, consistently
applied and adequately disclosed.
 
     We planned and performed our audit so as to obtain all the information and
explanations which we considered necessary in order to provide us with
sufficient evidence to give reasonable assurance that the financial statements
are free from material misstatement, whether caused by fraud or other
irregularity or error. In forming our opinion, we also evaluated the overall
adequacy of the presentation of information in the financial statements.
 
OPINION
 
   
     In our opinion the financial statements present fairly the statement of net
assets of the entity as at June 30, 1998 and of the income and cash flows for
the year ended June 30, 1998 of the entity and have been properly prepared in
accordance with U.K. generally accepted accounting principles.
    
 
   
     Generally accepted accounting principles in the United Kingdom vary in
certain significant respects from generally accepted accounting principles in
the United States. Application of generally accepted accounting principles in
the United States would have no significant effect on the statement of
operations for the year ended June 30, 1998 and the statement of net assets as
at June 30, 1998.
    
 
   
KPMG
    
CHARTERED ACCOUNTANTS
   
5 George's Dock
    
   
IFSC
    
   
Dublin 1
    
   
Ireland
    
   
November 23, 1998
    
                                      F-28
<PAGE>   181
 
   
                           AERFI TRANSFERRED AIRCRAFT
    
 
                            STATEMENT OF NET ASSETS
 
   
<TABLE>
<CAPTION>
                                                              NOTES    JUNE 30, 1998
                                                              -----    -------------
                                                                       U.S.$'000
<S>                                                           <C>      <C>
ASSETS
CURRENT ASSETS
Due from AerFi..............................................               24,376
Accounts receivable.........................................    2             772
                                                                          -------
TOTAL CURRENT ASSETS........................................               25,148
FIXED ASSETS
Aircraft....................................................    3         179,220
                                                                          -------
TOTAL ASSETS................................................              204,368
                                                                          =======
LIABILITIES
Accrued expenses and other liabilities......................    5           3,671
Indebtedness................................................    6          88,345
Provision for maintenance...................................    7           6,469
Security deposits...........................................    8           2,900
Deferred income tax.........................................   12           5,153
                                                                          -------
TOTAL LIABILITIES...........................................              106,538
NET ASSETS..................................................               97,830
                                                                          =======
</TABLE>
    
 
   
The accompanying notes, including the statement of accounting policies on pages
F-33 to F-34, are an integral part of the financial statements.
    
 
                                      F-29
<PAGE>   182
 
   
                           AERFI TRANSFERRED AIRCRAFT
    
 
                            STATEMENT OF OPERATIONS
 
   
<TABLE>
<CAPTION>
                                                                        YEAR ENDED
                                                              NOTES    JUNE 30, 1998
                                                              -----       -------
                                                                       U.S.$'000
<S>                                                           <C>      <C>
REVENUES
Aircraft leasing............................................    9          21,109
EXPENSES
Depreciation................................................    3         (10,215)
Provision for permanent diminution in value of aircraft.....    3              --
Net interest expense........................................   10          (6,612)
Other expenses..............................................   11          (4,804)
                                                                          -------
                                                                          (21,631)
                                                                          -------
NET LOSS FROM OPERATIONS BEFORE PROVISION FOR TAXES.........                 (522)
Benefit for taxes...........................................   12             501
                                                                          -------
NET LOSS FOR THE YEAR.......................................                  (21)
                                                                          =======
</TABLE>
    
 
All recognised gains and losses are included in the statement of operations
above.
 
There is no material difference between the net loss for the year, and its
historical cost equivalent.
 
The results for the year are derived from continuing operations.
 
   
The accompanying notes, including the statement of accounting policies on pages
F-33 to F-34, are an integral part of the financial statements.
    
 
                                      F-30
<PAGE>   183
 
   
                           AERFI TRANSFERRED AIRCRAFT
    
 
   
                            STATEMENT OF CASH FLOWS
    
 
   
<TABLE>
<CAPTION>
                                                               YEAR ENDED
                                                              JUNE 30, 1998
                                                                 -------
                                                              U.S.$'000
<S>                                                           <C>
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss for the year.......................................         (21)
ADJUSTMENTS TO RECONCILE NET LOSS TO NET CASH PROVIDED BY
  OPERATING ACTIVITIES
Depreciation charge for the year............................      10,215
Deferred income tax.........................................        (501)
Changes in operating assets and liabilities
  Accounts receivable and due from AerFi....................       2,960
  Accrued expenses and other liabilities....................      (3,366)
  Net maintenance expenditure...............................      (6,477)
  Net security deposits repaid..............................         (30)
                                                                 -------
NET CASH PROVIDED BY OPERATING ACTIVITIES...................       2,780
                                                                 -------
INVESTING ACTIVITIES
Purchase of aircraft........................................     (11,585)
                                                                 -------
FINANCING ACTIVITIES
Contributions from AerFi....................................      35,504
Reduction in Indebtedness...................................     (26,699)
                                                                 -------
NET CASH INFLOW FROM FINANCING ACTIVITIES...................       8,805
                                                                 -------
NET INCREASE IN CASH........................................          --
CASH AT BEGINNING OF YEAR...................................          --
                                                                 -------
CASH AT END OF YEAR.........................................          --
                                                                 =======
</TABLE>
    
 
Supplemental disclosure of cash flow information is set out in Note 14.
 
   
The accompanying notes, including the statement of accounting policies on pages
F-33 to F-34, are an integral part of the financial statements.
    
 
                                      F-31
<PAGE>   184
 
   
                           AERFI TRANSFERRED AIRCRAFT
    
 
                       STATEMENT OF CHANGES IN NET ASSETS
 
   
<TABLE>
<CAPTION>
                                                                  TOTAL
                                                                ---------
                                                                U.S.$'000
<S>                                                             <C>
Balance at June 30, 1997....................................     62,347
Net contribution from AerFi.................................     35,504
NET LOSS FOR THE YEAR.......................................        (21)
                                                                 ------
Balance at June 30, 1998....................................     97,830
                                                                 ======
</TABLE>
    
 
   
The accompanying notes, including the statement of accounting policies on pages
F-33 to F-34, are an integral part of the financial statements.
    
 
                                      F-32
<PAGE>   185
 
   
                           AERFI TRANSFERRED AIRCRAFT
    
 
                        STATEMENT OF ACCOUNTING POLICIES
 
   
     Introduction and basis of preparation
    
 
   
     These financial statements present the statement of operations and the cash
flows for the year ended June 30, 1998 and the statement of net assets at June
30, 1998 of the aircraft (the "AERFI TRANSFERRED AIRCRAFT") acquired by AerCo
from AerFi pursuant to a secured financing transaction on July 15, 1998.
    
 
   
     Under the transaction AerCo acquired all of the capital stock of ALPS 94-1,
a company which owns 25 aircraft and related leases, and also acquired 10
aircraft and related leases from AerFi. The further details of the Transaction
and of the basis of preparation of these financial statements for the AerFi
Transferred Aircraft are set out in Note 1.
    
 
     The accounting policies followed in the preparation of the accompanying
financial statements conform with generally accepted accounting principles in
the United Kingdom and comply with financial reporting standards of the
Accounting Standards Board in the United Kingdom as promulgated by the Institute
of Chartered Accountants in England and Wales.
 
     The financial statements are prepared on the going concern basis and under
the historic cost convention and are stated in US dollars, which is the
principal operating currency of the entity and of the aviation industry.
 
     Revenue recognition
 
   
     Revenue from aircraft on operating leases is recognised as income on a
straight line basis over the period of the leases. Where rentals are adjusted to
reflect increases or decreases in prevailing interest rates such adjustments are
accounted for as they arise. Lease rentals received in advance are deferred and
recognised over the period to which they relate.
    
 
     Interest income
 
   
     Interest earned during the year has been credited to the statement of
operations.
    
 
     Provision for maintenance
 
   
     Under the lease contracts the lessee has the obligation for maintenance
costs on airframes and engines which arise during the term of the lease and in
many lease contracts the lessee makes a full or partial prepayment, calculated
at an hourly rate, into a fund held by the entity from which maintenance
expenditures for major checks are disbursed. The balance of these funds are
included in the provision for maintenance.
    
 
     Taxation
 
     Corporation tax is provided based on the results for the year. Deferred
income tax assets and liabilities recognize the future tax consequences
attributable to differences between the financial statement carrying amounts of
existing assets and liabilities and their respective tax bases. Deferred income
tax assets and liabilities are measured using enacted tax rates expected to
apply to taxable income in the year in which those temporary differences are
expected to be recovered or settled. The effect on deferred income tax assets
and liabilities of a change in tax rates is recognized in the period that
includes the enactment date.
 
   
     Aircraft
    
 
   
     Aircraft are stated at cost less accumulated depreciation less permanent
diminutions in value. Cost comprises the net purchase price of the aircraft when
originally acquired by AerFi.
    
 
                                      F-33
<PAGE>   186
                           AERFI TRANSFERRED AIRCRAFT
 
                STATEMENT OF ACCOUNTING POLICIES -- (CONTINUED)
 
     Aircraft -- (Continued)
     Cost comprises the invoiced cost net of manufacturer's discounts.
Depreciation is calculated on a straight line basis. The estimates of useful
lives and residual values are reviewed periodically. The current estimates for
residual values are generally 15% of cost and for useful lives are as follows:
 
<TABLE>
<CAPTION>
                                                                YEARS           FROM
                                                                -----           ----
<S>                                                             <C>      <C>
Refurbished and upgraded aircraft -- converted to
  freighters................................................     20      Conversion Date
All other aircraft..........................................     25      Manufacture Date
</TABLE>
 
     Where purchase option agreements exist to the benefit of the lessee,
aircraft are depreciated to the purchase option price on a straight-line basis
provided that this would result in a higher depreciation charge than that
arrived at by applying the standard method.
 
     Additional charges are made to reduce the book value of specific assets to
fair market value where a permanent diminution in value is considered to have
occurred. Where fair market value is greater than book value no adjustment is
made.
 
   
     Fair market value is assessed by the directors, consistent with the going
concern basis of preparation of the financial statements, and reflects the
underlying economic value of aircraft and engines in normal market conditions
(where supply and demand are in reasonable equilibrium) and assumes adequate
time for a sale and a willing buyer and seller. Short-term fluctuations in the
market place are disregarded and it is assumed that there is no necessity either
to dispose of a significant number of aircraft simultaneously or to dispose of
aircraft quickly. In forming their assessment of fair market value the directors
have taken into consideration independent valuations of aircraft in the
portfolio, together with the directors' assessment of aircrafts' current
maintenance status and maintenance reserves.
    
 
   
     AerFi adopted FASB Statement No. 121 "Accounting for the Impairment of
Long-lived Assets and for Long-lived Assets to be disposed of" as of July 1,
1996. FASB Statement No. 121 requires that long-lived assets and certain
identifiable intangibles to be held and used by an entity be reviewed for
impairment whenever events or changes in circumstances indicate that the
carrying amount of an asset may not be recoverable. In performing the review for
recoverability, the directors' estimated the future cash flows expected to
result from the use of the asset and its eventual disposition. If the sum of the
expected future cash flows (undiscounted and without interest charges) is less
than the carrying amount of the asset, an impairment loss is recognized. This
statement did not materially change the carrying value of the entity's assets in
the period when it was first applied or in previous periods.
    
 
   
     New Accounting Standards not yet effective
    
 
   
     The entity will be required to adopt the provisions of Financial Reporting
Standard No. 12 "Provisions, Contingent Liabilities and Contingent Assets" for
all financial periods ending on or after March 23, 1999. Management are
currently assessing the impact, if any, that this Standard will have on its
adoption by the entity.
    
 
                                      F-34
<PAGE>   187
 
   
                           AERFI TRANSFERRED AIRCRAFT
    
 
                       NOTES TO THE FINANCIAL STATEMENTS
 
   
1  BASIS OF PREPARATION
    
 
   
     Under a refinancing transaction of July 15, 1998, AerCo acquired 100% of
the capital stock of ALPS 94-1 and thereby acquired 25 aircraft and related
leases and acquired directly or indirectly 10 aircraft and related leases from
AerFi (collectively the "AerFi Transferred Aircraft"). The Transaction was
effected by transferring ALPS 94-1 and subsidiaries and the existing AerFi
subsidiaries that own the AerFi Transferred Aircraft to AerCo.
    
 
   
     Simultaneously with such transfers, AerCo issued approximately $800 million
in aggregate principal amount of Notes in four subclasses: Subclass A-1,
Subclass A-2, Subclass B-1 and Subclass C-1 ("NOTES"). AerCo also issued two
additional subclasses of notes, the Subclass D-1 Notes and the Subclass E-1
Notes, which are initially held by AerFi. In addition, as part of the
Transaction a subsidiary of AerFi surrendered its holding of its existing Class
E Note of ALPS 94-1. AerCo used the proceeds of the issuance of the Notes, the
Subclass D-1 Notes and Subclass E-1 Notes to finance the repayment of all of
ALPS 94-1's existing financial indebtedness and to acquire or to finance the
acquisition by the Transferring Companies of the Transferring Aircraft from
AerFi.
    
 
   
     These financial statements present, on the bases and assumptions set out
below, the results of operations, assets and liabilities relating to the
aircraft to be transferred to AerCo from AerFi, reflecting the nine aircraft
owned by AerFi during the year ended June 30, 1998 and the acquisition in April
1998 of the A300-B4-200 aircraft by AerFi from ALPS 94-1. The financial
statements have been prepared by AerFi Administrative Services Limited on behalf
of the directors of AerCo.
    
 
   
     (i) The financial statements are presented on a historical cost basis as if
the AerFi Transferred Aircraft had been organized as single economic entity for
the year ended June 30, 1998.
    
 
     (ii) The Transaction is approved as planned and is completed such that
AerCo is a going concern with adequate capital and finance in place.
 
   
     (iii) For the purposes of these financial statements, an allocation of
certain costs such as selling, general and administrative expenses of AerFi to
the AerFi Transferred Aircraft has been made. The most significant element of
these costs relate to aircraft management fees, substantially all of which are
asset based fees calculated as an annual percentage of a reference net book
value of aircraft under management. The balance of such costs have been
calculated based on AerFi's estimate of the other overhead costs incurred in
managing the fleet of aircraft for the year. Management believes that the basis
for these allocations are reasonable.
    
 
   
     (iv) During the year two of the aircraft were financed by finance leases to
AerFi and one aircraft was financed by Notes issued by AerFi. For these aircraft
the financial lease obligations, the liabilities under the Notes and related
cash flows and interest costs are reflected in these financial statements.
    
 
   
     In the case of the remaining aircraft, no separate identifiable financing
was in place. These aircraft are assumed to have been financed by intercompany
indebtedness to AerFi at levels based on the ratio of AerFi's overall net debt
to aircraft net book value of 51.87% at June 30, 1997 and 42.06% at June 30,
1998 and repayments to AerFi are assumed to have been made accordingly during
the year.
    
 
   
     (v) The interest charged on the assumed indebtedness to AerFi is based on
AerFi's average cost of debt of 9.59% for the year ended June 30, 1998.
    
 
   
     (vi) Cash generated from or absorbed by the activities of the AerFi
Transferred Aircraft during the year is reflected through the intercompany
account as distributions to or transfers from AerFi. This includes
    
 
                                      F-35
<PAGE>   188
   
                           AERFI TRANSFERRED AIRCRAFT
    
 
                NOTES TO THE FINANCIAL STATEMENTS -- (CONTINUED)
 
   
1  BASIS OF PREPARATION (CONTINUED)
    
   
restricted cash held by AerFi with respect to AerFi Transferred Aircraft. No
separate cash balances existed for the AerFi Transferred Aircraft.
    
 
   
     (vii) The tax provisions and deferred income tax assets and liabilities of
the AerFi Transferred Aircraft have been determined as if the aircraft had been
owned by taxable entities separate from AerFi.
    
 
2  ACCOUNTS RECEIVABLE
 
   
<TABLE>
<CAPTION>
                                                              JUNE 30, 1998
                                                              -------------
                                                              U.S.$'000
<S>                                                           <C>
Trade receivables...........................................       366
Non-trade receivables.......................................       406
                                                                   ---
                                                                   772
                                                                   ===
</TABLE>
    
 
   
     Trade receivables are stated net of bad debt provision of $0.6 million and
comprise amounts in respect of rent and maintenance payments due from lessees.
As at June 30, 1998 one lessee accounted for 99% of trade receivables.
    
 
   
     Non-trade receivables comprise prepayments of French VAT.
    
 
3  AIRCRAFT
 
   
<TABLE>
<CAPTION>
                                                              JUNE 30, 1998
                                                              -------------
                                                              U.S.$'000
<S>                                                           <C>
COST
Beginning of year...........................................     272,128
Additions during the year...................................      11,585
                                                                --------
End of year.................................................     283,713
                                                                --------
DEPRECIATION
Beginning of year...........................................     (90,278)
Charge for the year.........................................     (10,215)
                                                                --------
End of year.................................................    (100,493)
                                                                --------
Provision for permanent diminution in value.................      (4,000)
                                                                --------
NET BOOK VALUE
Beginning of year...........................................     177,850
                                                                --------
End of year.................................................     179,220
                                                                --------
</TABLE>
    
 
   
     Cost represents the net purchase price of the aircraft when originally
acquired by AerFi.
    
 
   
     The directors of AerCo determine on an annual basis whether a permanent
diminution in value of the AerFi Transferred Aircraft has occurred. Where a
permanent diminution in value is considered to have occurred provision is made
based upon market appraisals of the individual aircraft prepared by three
professional appraisal firms, together with other factors such as maintenance
reserves held by the entity, the creditworthiness of particular lessees, current
rental values compared to open market and the length of remaining lease term.
    
 
                                      F-36
<PAGE>   189
   
                           AERFI TRANSFERRED AIRCRAFT
    
 
                NOTES TO THE FINANCIAL STATEMENTS -- (CONTINUED)
 
4  OPERATING LEASES
 
     All the aircraft are held for operating lease. Rentals on certain of the
leases are variable in accordance with prevailing interest rates.
 
   
     The following is a schedule of contracted future rentals, by years, on
operating leases as of June 30, 1998. The interest rates prevailing at June 30,
1998 have been applied in determining rentals that are variable in accordance
with prevailing interest rates.
    
 
   
<TABLE>
<CAPTION>
YEAR ENDING JUNE 30                                             U.S.$'000
- -------------------                                             ---------
<S>                                                             <C>
1999........................................................      22,729
2000........................................................      26,233
2001........................................................      17,644
2002........................................................      13,315
2003........................................................      15,399
Thereafter..................................................       9,704
                                                                 -------
                                                                 105,024
                                                                 =======
</TABLE>
    
 
5  ACCRUED EXPENSES AND OTHER LIABILITIES
 
   
<TABLE>
<CAPTION>
                                                                JUNE 30, 1998
                                                                -------------
                                                                    U.S.$'000
<S>                                                             <C>
Accrued expenses and other liabilities comprise:
Deferred income.............................................              839
Interest....................................................               50
Other accruals..............................................            2,782
                                                                        -----
                                                                        3,671
                                                                        -----
                                                                        -----
</TABLE>
    
 
6  INDEBTEDNESS
 
   
<TABLE>
<CAPTION>
                                                                JUNE 30, 1998
                                                                -------------
                                                                    U.S.$'000
<S>                                                             <C>
Finance lease obligations(i)................................           18,774
AerFi Notes(i)..............................................           20,993
Due to AerFi(ii)............................................           48,578
                                                                       ------
                                                                       88,345
                                                                       ------
                                                                       ------
</TABLE>
    
 
     The basis and assumptions under which indebtedness has been reflected in
these financial statements is set out in Note 1.
 
   
     (i)   The finance lease obligations and the AerFi Notes issued comprise the
        amounts raised by AerFi to finance three of the AerFi Transferred
        Aircraft. As part of the completion of the Transaction these amounts
        will be repaid in full (and accordingly no future maturity analysis is
        presented). The AerFi Notes are secured on one of the aircraft which has
        a net book value of $25.1 million (1997: $26.2 million) and the Notes
        carried interest at a rate of 7.21% (1997: 7.21%) during the financial
        year.
    
 
   
     (ii)  As explained in Note 1 it has been assumed that the remaining
        aircraft had been financed with indebtedness due to AerFi.
    
 
                                      F-37
<PAGE>   190
   
                           AERFI TRANSFERRED AIRCRAFT
    
 
                NOTES TO THE FINANCIAL STATEMENTS -- (CONTINUED)
 
6  INDEBTEDNESS (CONTINUED)
   
     (iii) Repayments of principal during the year on the finance lease
        obligations and the AerFi Notes were in accordance with their respective
        contractual terms. The repayments of principal on the aircraft which
        were assumed to be financed by AerFi were assumed to be made in
        accordance with changes in AerFi's aircraft net book value to net debt
        ratio during the financial year.
    
 
7  PROVISION FOR MAINTENANCE
 
   
<TABLE>
<CAPTION>
                                                                JUNE 30, 1998
                                                                -------------
                                                                    U.S.$'000
<S>                                                             <C>
Opening balance.............................................           12,946
Receivable during year......................................            2,654
Expenditure.................................................           (9,131)
                                                                       ------
Closing Balance.............................................            6,469
                                                                       ------
                                                                       ------
Due within one year.........................................              743
Due after one year..........................................            5,726
                                                                       ------
                                                                        6,469
                                                                       ------
                                                                       ------
</TABLE>
    
 
   
8  SECURITY DEPOSITS
    
 
   
     Security deposits received from lessees of U.S.$2.9 million are held as
security for obligations in accordance with the terms of certain leases.
    
 
9  REVENUES AND CONCENTRATION OF CREDIT RISK
 
     a) Distribution of revenues by geographic area
 
   
<TABLE>
<CAPTION>
                                                                    YEAR ENDED
                                                                   JUNE 30, 1998
                                                                -------------------
                                                                U.S.$'000      %
                                                                ---------    ------
<S>                                                             <C>          <C>
Europe......................................................     12,950       61.36
North America...............................................      4,195       19.87
South/Central America.......................................      3,727       17.65
Asia/Pacific................................................        237        1.12
                                                                 ------      ------
                                                                 21,109      100.00
                                                                 ======      ======
</TABLE>
    
 
     All revenues are derived from aircraft leasing.
 
     b) Concentration of credit risk
 
     Credit risk with respect to trade accounts receivable is generally
mitigated due to the number of lessees and their dispersal across different
geographic areas.
 
     The entity manages its exposure to particular countries in part through
obtaining security from lessees by way of deposits, letters of credit and
guarantees. In addition the entity maintains Political Risk Insurance in respect
of certain lessees.
 
     The entity continually evaluates the financial position of lessees and,
based on this evaluation, the amounts outstanding and the available security,
makes an appropriate provision for doubtful debts.
 
                                      F-38
<PAGE>   191
   
                           AERFI TRANSFERRED AIRCRAFT
    
 
                NOTES TO THE FINANCIAL STATEMENTS -- (CONTINUED)
 
9  REVENUES AND CONCENTRATION OF CREDIT RISK (CONTINUED)
   
     As at June 30, 1998, five lessees accounted for 18%, 16%, 15%, 15% and 14%
of the entity's lease revenues. No other lessee accounted for greater than 10%
of the entity's lease revenues for the year ended June 30, 1998.
    
 
10  NET INTEREST EXPENSE
 
   
<TABLE>
<CAPTION>
                                                                 YEAR ENDED
                                                              JUNE 30, 1998
                                                              -------------
                                                                  U.S.$'000
<S>                                                           <C>
Interest payable on finance lease obligations...............          2,076
Interest payable on AerFi Notes.............................          1,596
Interest payable on indebtedness due to AerFi...............          4,902
Net interest income on amounts due from AerFi...............         (1,962)
                                                                      -----
                                                                      6,612
                                                                      -----
                                                                      -----
</TABLE>
    
 
11  OTHER EXPENSES
 
   
<TABLE>
<CAPTION>
                                                                 YEAR ENDED
                                                              JUNE 30, 1998
                                                              -------------
                                                                  U.S.$'000
<S>                                                           <C>
Servicer's fees.............................................          1,201
Aircraft leasing costs......................................          3,348
Political risk insurance....................................           (145)
Administration fees.........................................             40
Legal and professional fees.................................            100
Deferred expenditure........................................             --
Cash manager's fees.........................................            210
Audit and tax fees..........................................             50
                                                                      -----
                                                                      4,804
                                                                      -----
                                                                      -----
</TABLE>
    
 
12  BENEFIT FOR TAXES
 
   
<TABLE>
<CAPTION>
                                                                 YEAR ENDED
                                                              JUNE 30, 1998
                                                              -------------
                                                                  U.S.$'000
<S>                                                           <C>
Tax benefit of the AerFi Transferred Aircraft consists of
  the following:
Deferred income tax benefit.................................            501
                                                                      -----
                                                                        501
                                                                      -----
                                                                      -----
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                                                   YEAR ENDED
                                                                JUNE 30, 1998
                                                                -------------
                                                                    U.S.$'000
<S>                                                             <C>
Deferred tax assets and liabilities of the AerFi Transferred
  Aircraft:
Deferred tax assets relating to losses......................           (5,415)
Deferred tax liability relating to aircraft.................           10,568
                                                                       ------
                                                                        5,153
                                                                       ------
                                                                       ------
</TABLE>
    
 
                                      F-39
<PAGE>   192
                           AERFI TRANSFERRED AIRCRAFT
 
                NOTES TO THE FINANCIAL STATEMENTS -- (CONTINUED)
 
12  BENEFIT FOR TAXES (CONTINUED)
   
     The AerFi Transferred Aircraft's income from approved activities in Ireland
is taxable at a rate of 10% until December 31, 2005. US Federal and State tax is
provided at a rate of 35%.
    
 
   
     Two aircraft, for tax purposes, are treated as being leased from third
parties under US "safe harbour lease" tax rules. Under existing laws, certain
events could reverse the cumulative effect of this tax treatment, in which case
the entity would be required to make payments to third parties under the tax
indemnification clauses included in the lease agreements. As of June 30, 1998
the maximum potential exposure under this provision is $0.9 million. The
directors of AerCo believe that no events have taken place which would cause
such payments to become due.
    
 
13  STAFF COSTS AND NUMBERS
 
     The entity has no employees.
 
14  SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
 
   
<TABLE>
<CAPTION>
                                                                   YEAR ENDED
                                                                JUNE 30, 1998
                                                                -------------
                                                                    U.S.$'000
<S>                                                             <C>
Cash paid in respect of:
Interest -- Individual financings...........................            4,902
Interest -- AerFi Notes.....................................            1,600
Interest -- Indebtedness to AerFi...........................            2,076
                                                                        -----
                                                                        8,578
                                                                        -----
                                                                        -----
</TABLE>
    
 
15  COMMITMENTS
 
     The entity has no long-term contracts other than those with its service
providers (see Note 19).
 
16  SUMMARY OF DIFFERENCES BETWEEN UNITED KINGDOM AND UNITED STATES GENERALLY
    ACCEPTED ACCOUNTING PRINCIPLES
 
   
     The financial statements are prepared in accordance with generally accepted
accounting principles applicable in the United Kingdom ('U.K. GAAP') which
differ significantly in certain respects from those generally accepted in the
United States ('U.S. GAAP'). There were no significant differences arising in
respect of the AerFi Transferred Aircraft for the year to June 30, 1998.
    
 
17  FAIR VALUE OF FINANCIAL INSTRUMENTS
 
   
     The entity estimates that the fair value of its cash and other receivables
and payables at June 30, 1998 approximate to the amounts at which these items
are reflected in the entity's statement of net assets. This is due to the
relatively short-term nature of the instruments and the frequency at which they
reprice.
    
 
18  FOREIGN CURRENCY TRANSACTIONS
 
     The entity's foreign currency transactions are not significant as all
revenues and most costs are denominated in U.S. dollars.
 
                                      F-40
<PAGE>   193
                           AERFI TRANSFERRED AIRCRAFT
 
                NOTES TO THE FINANCIAL STATEMENTS -- (CONTINUED)
 
19  RELATED PARTY TRANSACTIONS
 
     GE Capital Aviation Services Limited (GECAS)
 
   
     During the year GECAS acted as lease manager for AerFi Transferred
Aircraft. In addition to managing the entity's aircraft GECAS also manages
aircraft owned by GE Capital and its affiliates and other third parties,
including AerFi. GECAS may from time to time have conflicts of interest in
performing its obligations to the entity and other entities to which it provides
management, marketing and other services.
    
 
   
     GECAS receives an annual fee from AerFi as lease manager of certain of its
aircraft -- U.S.$1,201,000 of this fee is attributed to these aircraft for the
year ended June 30, 1998.
    
 
                                      F-41
<PAGE>   194
 
                                   APPENDIX 1
 
                             INDEX OF DEFINED TERMS
 
   
<TABLE>
<CAPTION>
                                      PAGE
                                     -------
<S>                                  <C>
1958 Order.........................      138
1961 Law...........................      147
additional servicer................      124
Adjusted Portfolio Value...........      102
ADs................................       58
AerCo..............................        8
AerCo Group........................       12
AerFi..............................       34
AerFi Transferred Aircraft.........       12
Aer Lingus.........................       42
affiliate..........................      111
Air 2000...........................       42
Aircraft Agreement.................      117
Air France.........................       42
Air Pacific........................       42
Airtours...........................       42
Allowed Restructuring..............      113
AOG................................       91
ARE................................       92
Asiana.............................       42
assumed maturity...................       94
Assumed Portfolio Value............      101
ATOP...............................       30
Available Collections..............       15
Avianca............................       42
Babcock & Brown....................        8
Babcock & Brown Group..............       35
BAX Global.........................       42
British Midland....................       42
Canadian...........................       42
CAT................................      145
CCN................................      143
Charitable Trust...................       34
Charitable Trust Trustee...........       60
Chicago Convention.................       40
China Southwest....................       42
Code...............................      148
Commission.........................      137
Concentration Default..............      117
Concentration Limits...............      121
control............................      111
covenant defeasance................      107
DCR................................        8
default............................      127
disqualified persons...............      150
Eligible Credit Facilities.........      132
Encumbrance........................      110
ERISA..............................       26
Event of Default...................      125
Excess Amortization Date...........      103
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                      PAGE
                                     -------
<S>                                  <C>
Exchange Act.......................      137
Expected Final Payment Date........       79
Extended Pool Factor...............      138
FEAT...............................       42
GECAS..............................       34
guarantee..........................      115
H.15 (519).........................      105
incur..............................      114
Indebtedness.......................      114
Indian.............................       42
Initial Appraised Value............      101
investment.........................      112
Irish stamp duty...................      145
ISIN...............................      143
Jersey Tax Counsel.................      147
Lan Chile..........................       42
legal defeasance...................      106
Listing Agent......................      137
Malev..............................       42
Minimum Class Percentage...........      101
Minimum Principal Payment Amount...      101
Minimum Target Principal Balance...      101
Modification Payment...............      118
Monarch............................       42
Morgan Stanley.....................      170
MSCI...............................      121
Net Sale Proceeds..................      117
New Notes..........................    Cover
Notes..............................    Cover
Note Target Price..................      116
Notice of Refinancing..............      104
Old Notes..........................    Cover
Outstanding Principal Balance......       79
PAL................................       42
parties in interest................      150
Pegasus............................       42
permitted account investments......       67
Permitted Accruals.................      132
Permitted Encumbrance..............      111
Permitted Tax-Related
  Disposition......................      116
Plans..............................      150
Pool Factor........................      103
Portfolio..........................        6
Portugalia.........................       42
precedent lease....................      124
Primary Eligible Credit Facility...      133
PTCE...............................      150
recession..........................       96
Renewal Lease......................      124
Required Expense Amount............       15
</TABLE>
    
 
                                       A-1
<PAGE>   195
 
   
<TABLE>
<CAPTION>
                                      PAGE
                                     -------
<S>                                  <C>
RPMs...............................       55
Scheduled Class Percentage.........      102
Scheduled Principal Payment
  Amount...........................      102
Scheduled Target Principal
  Balance..........................      102
Second Collection Account..........      108
Secondary Eligible Credit
  Facility.........................      133
Senior trustee.....................      126
Servicer's Pro Forma Lease.........      124
Shannon Certified Operations.......      144
Significant Subsidiary.............      126
Spanair............................       42
Stage 3 aircraft...................       40
Step-Up Interest...................       99
Subordinated Swap Payments.........      109
Sun Express........................       42
Supplemental Class Percentage......      102
Supplemental Principal Payment
  Amount...........................      102
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                      PAGE
                                     -------
<S>                                  <C>
Supplemental Target Principal
  Balance..........................      102
TAM................................       42
Third Party Event..................      123
THY................................       42
Tower..............................       42
Transaction........................       81
Treasury Yield.....................      105
Treaty.............................   27&144
U.K. GAAP..........................       13
Unaudited Pro-Forma Combined
  Financial Information............       81
U.S. GAAP..........................       13
U.S. Holder........................      144
United States Holder...............      148
Yunnan.............................       42
</TABLE>
    
 
                                       A-2
<PAGE>   196
 
                                   APPENDIX 2
 
                             AIRCRAFT TYPES DATA(1)
 
<TABLE>
<CAPTION>
                                                               NO. &       STAGE 3
                                 NARROW/                      MFR. OF       NOISE                    CURRENT    ON       NO. OF
TYPE & VARIANT                   WIDEBODY   TYPICAL SEATS     ENGINES     COMPLIANCE   PROD. YEARS    FLEET    ORDER   OPERATORS
- --------------                   --------   -------------   ------------  ----------   -----------   -------   -----   ----------
<S>                              <C>        <C>             <C>           <C>          <C>           <C>       <C>     <C>
Airbus A300-B4.................   Wide        250            2 X GE/PW     Yes           1975-88       129        0        30
Airbus A320-200................  Narrow       150           2 X CFM/IAE    Yes            1988-        553      166        60
Boeing 737-300.................  Narrow       130             2 X CFM      Yes            1984-        971       54        89
Boeing 737-400.................  Narrow       150             2 X CFM      Yes            1988-        421       28        53
Boeing 737-500.................  Narrow       110             2 X CFM      Yes            1990-        330       37        36
Boeing 747-200.................   Wide        370           4 X GE/PW/RR   Yes           1970-89       397        0        69
Boeing 757-200.................  Narrow       180            2 X RR/PW     Yes            1982-        758       91        68
Boeing 767-300ER...............   Wide        250           2 X GE/PW/RR   Yes            1988-        340       61        51
MDC MD83(2)....................  Narrow       150              2 X PW      Yes            1984-        246        0        31
MDC DC8-70F....................  Narrow        --             4 X CFM      Yes         Conversions     101        0        12
Fokker 100.....................  Narrow       100              2 X RR      Yes           1988-96       258        0        26
</TABLE>
 
- ---------------
 
(1) Data is at April 30, 1998.
 
(2) Boeing has announced that production of these aircraft types is expected to
     end in 1999.
 
                                       A-3
<PAGE>   197
 
                                   APPENDIX 3
 
                MONTHLY GROSS REVENUES BASED ON THE ASSUMPTIONS
 
<TABLE>
<CAPTION>
                             GROSS
          MONTH             REVENUES
- -------------------------  ----------
                              ($)
<S>                        <C>
August 1998..............   8,266,830
September 1998...........   9,570,151
October 1998.............  10,352,892
November 1998............   9,571,995
December 1998............   9,560,995
January 1999.............  10,217,795
February 1999............   9,452,240
March 1999...............  10,295,540
April 1999...............  10,218,280
May 1999.................   9,484,193
June 1999................   9,534,193
July 1999................  10,299,993
August 1999..............   9,534,068
September 1999...........   9,553,596
October 1999.............  10,319,638
November 1999............   9,531,369
December 1999............   9,531,369
January 2000.............   9,788,333
February 2000............   9,788,333
March 2000...............   9,788,333
April 2000...............   9,788,036
May 2000.................   9,789,642
June 2000................   9,779,642
July 2000................   9,779,642
August 2000..............   9,779,642
September 2000...........   9,779,642
October 2000.............   9,779,642
November 2000............   9,781,245
December 2000............   9,781,245
January 2001.............   9,780,252
February 2001............   9,780,252
March 2001...............   9,780,252
April 2001...............   9,780,252
May 2001.................   9,781,854
June 2001................   9,767,665
July 2001................   9,767,665
August 2001..............   9,767,665
September 2001...........   9,767,665
October 2001.............   9,767,665
November 2001............   9,769,272
December 2001............   9,769,272
January 2002.............   9,769,272
February 2002............   9,769,272
March 2002...............   9,769,272
April 2002...............   9,769,272
May 2002.................   9,770,875
June 2002................   9,770,875
July 2002................   9,770,875
August 2002..............   9,770,875
September 2002...........   9,765,060
October 2002.............   9,765,060
November 2002............   9,766,662
December 2002............   9,766,662
January 2003.............   9,766,662
February 2003............   9,766,662
</TABLE>
 
<TABLE>
<CAPTION>
                             GROSS
          MONTH             REVENUES
- -------------------------  ----------
                              ($)
<S>                        <C>
March 2003...............   9,766,662
April 2003...............   9,759,239
May 2003.................   9,759,239
June 2003................   9,759,239
July 2003................   9,759,239
August 2003..............   9,669,650
September 2003...........   9,669,650
October 2003.............   9,669,650
November 2003............   9,669,650
December 2003............   9,669,650
January 2004.............   9,669,650
February 2004............   9,669,650
March 2004...............   9,669,650
April 2004...............   9,553,544
May 2004.................   9,552,272
June 2004................   9,552,272
July 2004................   9,552,272
August 2004..............   9,551,836
September 2004...........   9,551,836
October 2004.............   9,551,836
November 2004............   9,550,505
December 2004............   9,550,505
January 2005.............   9,550,505
February 2005............   9,550,505
March 2005...............   9,550,505
April 2005...............   9,548,787
May 2005.................   9,548,787
June 2005................   9,548,787
July 2005................   9,548,787
August 2005..............   9,548,787
September 2005...........   9,548,787
October 2005.............   9,548,787
November 2005............   9,548,787
December 2005............   9,548,787
January 2006.............   9,536,623
February 2006............   9,536,623
March 2006...............   9,534,823
April 2006...............   9,527,527
May 2006.................   9,489,093
June 2006................   9,448,220
July 2006................   9,448,220
August 2006..............   9,448,220
September 2006...........   9,448,220
October 2006.............   9,448,220
November 2006............   9,448,220
December 2006............   9,448,220
January 2007.............   9,448,220
February 2007............   9,448,220
March 2007...............   9,448,220
April 2007...............   9,448,220
May 2007.................   9,448,220
June 2007................   9,440,120
July 2007................   9,438,444
August 2007..............   9,438,444
September 2007...........   9,435,575
</TABLE>
 
<TABLE>
<CAPTION>
<S>                        <C>
                             GROSS
          MONTH             REVENUES
- -------------------------  ----------
                              ($)
<S>                        <C>
October 2007.............   9,435,575
November 2007............   9,364,232
December 2007............   9,347,271
January 2008.............   9,334,624
February 2008............   9,334,624
March 2008...............   9,334,624
April 2008...............   9,329,576
May 2008.................   9,329,576
June 2008................   9,308,134
July 2008................   9,308,134
August 2008..............   9,022,681
September 2008...........   8,996,014
October 2008.............   8,980,884
November 2008............   8,980,884
December 2008............   8,980,884
January 2009.............   8,953,777
February 2009............   8,950,139
March 2009...............   8,950,139
April 2009...............   8,646,352
May 2009.................   8,589,123
June 2009................   8,589,123
July 2009................   8,549,622
August 2009..............   8,471,080
September 2009...........   8,391,928
October 2009.............   8,391,928
November 2009............   8,259,471
December 2009............   8,259,471
January 2010.............   8,219,213
February 2010............   8,219,213
March 2010...............   8,219,213
April 2010...............   7,912,796
May 2010.................   7,873,573
June 2010................   7,873,573
July 2010................   7,873,573
August 2010..............   7,873,573
September 2010...........   7,873,573
October 2010.............   7,873,573
November 2010............   7,873,573
December 2010............   7,873,573
January 2011.............   7,818,835
February 2011............   7,818,835
March 2011...............   7,737,835
April 2011...............   7,550,213
May 2011.................   7,468,824
June 2011................   7,398,886
July 2011................   7,398,886
August 2011..............   7,398,886
September 2011...........   7,398,886
October 2011.............   7,398,886
November 2011............   7,398,886
December 2011............   7,398,886
January 2012.............   7,398,886
February 2012............   7,398,886
March 2012...............   7,398,886
April 2012...............   7,398,886
</TABLE>
 
                                       A-4
<PAGE>   198
         MONTHLY GROSS REVENUES BASED ON THE ASSUMPTIONS -- (CONTINUED)
 
<TABLE>
<CAPTION>
                             GROSS
          MONTH             REVENUES
- -------------------------  ----------
                              ($)
<S>                        <C>
May 2012.................   7,398,886
June 2012................   7,346,814
July 2012................   7,271,394
August 2012..............   7,271,394
September 2012...........   7,142,264
October 2012.............   7,142,264
November 2012............   7,055,496
December 2012............   6,972,980
January 2013.............   6,891,680
February 2013............   6,891,680
March 2013...............   6,891,680
April 2013...............   6,761,879
May 2013.................   6,761,879
June 2013................   6,704,272
July 2013................   6,704,272
August 2013..............   6,704,272
September 2013...........   6,584,272
October 2013.............   6,504,172
November 2013............   6,504,172
December 2013............   6,504,172
January 2014.............   6,439,972
February 2014............   6,346,426
March 2014...............   6,346,426
April 2014...............   6,181,480
May 2014.................   6,049,220
June 2014................   6,049,220
July 2014................   5,951,818
August 2014..............   5,768,990
September 2014...........   5,591,769
October 2014.............   5,591,769
November 2014............   5,373,241
December 2014............   5,373,241
January 2015.............   5,296,152
February 2015............   5,296,152
March 2015...............   5,296,152
April 2015...............   4,838,833
May 2015.................   4,752,733
June 2015................   4,752,733
July 2015................   4,752,733
August 2015..............   4,752,733
September 2015...........   4,752,733
October 2015.............   4,752,733
November 2015............   4,752,733
December 2015............   4,752,733
January 2016.............   4,637,175
</TABLE>
 
<TABLE>
<CAPTION>
                             GROSS
          MONTH             REVENUES
- -------------------------  ----------
                              ($)
<S>                        <C>
February 2016............   4,637,175
March 2016...............   4,449,975
April 2016...............   4,019,487
May 2016.................   3,868,014
June 2016................   3,868,014
July 2016................   3,868,014
August 2016..............   3,868,014
September 2016...........   3,868,014
October 2016.............   3,868,014
November 2016............   3,868,014
December 2016............   3,868,014
January 2017.............   3,868,014
February 2017............   3,868,014
March 2017...............   3,868,014
April 2017...............   3,868,014
May 2017.................   3,868,014
June 2017................   3,754,612
July 2017................   3,580,308
August 2017..............   3,580,308
September 2017...........   3,281,874
October 2017.............   3,281,874
November 2017............   3,150,758
December 2017............   2,975,183
January 2018.............   2,798,130
February 2018............   2,798,130
March 2018...............   2,798,130
April 2018...............   2,500,307
May 2018.................   2,500,307
June 2018................   2,387,333
July 2018................   2,387,333
August 2018..............   2,387,333
September 2018...........   2,134,000
October 2018.............   1,962,230
November 2018............   1,962,230
December 2018............   1,962,230
January 2019.............   1,839,537
February 2019............   1,624,901
March 2019...............   1,624,901
April 2019...............   1,358,922
May 2019.................   1,358,922
June 2019................   1,358,922
July 2019................   1,171,153
August 2019..............   1,171,153
September 2019...........     836,791
October 2019.............     836,791
</TABLE>
 
<TABLE>
<CAPTION>
<S>                        <C>
                             GROSS
          MONTH             REVENUES
- -------------------------  ----------
                              ($)
<S>                        <C>
November 2019............     722,349
December 2019............     722,349
January 2020.............     582,732
February 2020............     582,732
March 2020...............     582,732
April 2020...............     161,677
May 2020.................           0
June 2020................           0
July 2020................           0
August 2020..............           0
September 2020...........           0
October 2020.............           0
November 2020............           0
December 2020............           0
January 2021.............           0
February 2021............           0
March 2021...............           0
April 2021...............           0
May 2021.................           0
June 2021................           0
July 2021................           0
August 2021..............           0
September 2021...........           0
October 2021.............           0
November 2021............           0
December 2021............           0
January 2022.............           0
February 2022............           0
March 2022...............           0
April 2022...............           0
May 2022.................           0
June 2022................           0
July 2022................           0
August 2022..............           0
September 2022...........           0
October 2022.............           0
November 2022............           0
December 2022............           0
January 2023.............           0
February 2023............           0
March 2023...............           0
April 2023...............           0
May 2023.................           0
June 2023................           0
July 2023................           0
</TABLE>
 
                                       A-5
<PAGE>   199
 
                                   APPENDIX 4
 
               ASSUMED PORTFOLIO VALUES FOR THE INITIAL PORTFOLIO
 
<TABLE>
<CAPTION>
                           EXPECTED
        MONTH           PORTFOLIO VALUE
- ----------------------  ---------------
                         ($ MILLIONS)
<S>                     <C>
Closing...............       951.97
August 1998...........       949.16
September 1998........       945.90
October 1998..........       942.63
November 1998.........       939.35
December 1998.........       936.05
January 1999..........       932.74
February 1999.........       929.41
March 1999............       926.07
April 1999............       922.72
May 1999..............       919.35
June 1999.............       915.97
July 1999.............       912.58
August 1999...........       909.17
September 1999........       905.75
October 1999..........       902.32
November 1999.........       898.87
December 1999.........       895.41
January 2000..........       891.93
February 2000.........       888.44
March 2000............       884.94
April 2000............       881.42
May 2000..............       877.89
June 2000.............       874.34
July 2000.............       870.78
August 2000...........       867.21
September 2000........       863.62
October 2000..........       860.02
November 2000.........       856.40
December 2000.........       852.77
January 2001..........       849.13
February 2001.........       845.47
March 2001............       841.79
April 2001............       838.10
May 2001..............       834.40
June 2001.............       830.68
July 2001.............       826.95
August 2001...........       823.20
September 2001........       819.44
October 2001..........       815.67
November 2001.........       811.87
December 2001.........       808.07
January 2002..........       804.25
February 2002.........       800.41
March 2002............       796.56
April 2002............       792.70
May 2002..............       788.82
June 2002.............       784.92
July 2002.............       781.01
August 2002...........       777.09
September 2002........       773.15
October 2002..........       769.19
November 2002.........       765.22
December 2002.........       761.24
January 2003..........       757.24
</TABLE>
 
<TABLE>
<CAPTION>
                           EXPECTED
        MONTH           PORTFOLIO VALUE
- ----------------------  ---------------
                         ($ MILLIONS)
<S>                     <C>
February 2003.........       753.22
March 2003............       749.19
April 2003............       745.14
May 2003..............       741.08
June 2003.............       737.00
July 2003.............       732.91
August 2003...........       728.80
September 2003........       724.68
October 2003..........       720.54
November 2003.........       716.38
December 2003.........       712.21
January 2004..........       708.02
February 2004.........       703.82
March 2004............       699.60
April 2004............       695.37
May 2004..............       691.12
June 2004.............       686.85
July 2004.............       682.57
August 2004...........       678.27
September 2004........       673.96
October 2004..........       669.63
November 2004.........       665.28
December 2004.........       660.92
January 2005..........       656.54
February 2005.........       652.14
March 2005............       647.73
April 2005............       643.30
May 2005..............       638.86
June 2005.............       634.40
July 2005.............       629.92
August 2005...........       625.43
September 2005........       620.92
October 2005..........       616.39
November 2005.........       611.85
December 2005.........       607.29
January 2006..........       602.71
February 2006.........       598.12
March 2006............       593.57
April 2006............       589.15
May 2006..............       584.71
June 2006.............       580.25
July 2006.............       575.78
August 2006...........       571.29
September 2006........       566.79
October 2006..........       562.39
November 2006.........       558.23
December 2006.........       554.05
January 2007..........       549.85
February 2007.........       545.64
March 2007............       541.42
April 2007............       537.18
May 2007..............       532.92
June 2007.............       528.65
July 2007.............       524.36
August 2007...........       520.06
</TABLE>
 
<TABLE>
<CAPTION>
<S>                     <C>
                           EXPECTED
        MONTH           PORTFOLIO VALUE
- ----------------------  ---------------
                         ($ MILLIONS)
<S>                     <C>
September 2007........       515.74
October 2007..........       511.41
November 2007.........       507.06
December 2007.........       502.69
January 2008..........       498.31
February 2008.........       493.92
March 2008............       489.50
April 2008............       485.13
May 2008..............       480.90
June 2008.............       476.74
July 2008.............       472.57
August 2008...........       468.39
September 2008........       464.19
October 2008..........       459.97
November 2008.........       455.74
December 2008.........       451.49
January 2009..........       447.23
February 2009.........       442.96
March 2009............       438.66
April 2009............       434.36
May 2009..............       430.03
June 2009.............       425.69
July 2009.............       421.34
August 2009...........       416.97
September 2009........       412.59
October 2009..........       408.19
November 2009.........       403.77
December 2009.........       399.34
January 2010..........       394.89
February 2010.........       390.43
March 2010............       385.95
April 2010............       381.45
May 2010..............       376.94
June 2010.............       372.41
July 2010.............       367.87
August 2010...........       363.31
September 2010........       358.74
October 2010..........       354.15
November 2010.........       349.54
December 2010.........       344.92
January 2011..........       340.28
February 2011.........       335.62
March 2011............       330.95
April 2011............       326.26
May 2011..............       321.55
June 2011.............       316.83
July 2011.............       312.10
August 2011...........       307.34
September 2011........       302.57
October 2011..........       297.78
November 2011.........       292.98
December 2011.........       288.16
January 2012..........       283.32
February 2012.........       278.47
March 2012............       273.59
</TABLE>
 
                                       A-6
<PAGE>   200
       ASSUMED PORTFOLIO VALUES FOR THE INITIAL PORTFOLIO -- (CONTINUED)
 
<TABLE>
<CAPTION>
                           EXPECTED
        MONTH           PORTFOLIO VALUE
- ----------------------  ---------------
                         ($ MILLIONS)
<S>                     <C>
April 2012............       268.71
May 2012..............       263.80
June 2012.............       258.88
July 2012.............       253.94
August 2012...........       248.99
September 2012........       244.01
October 2012..........       239.02
November 2012.........       234.02
December 2012.........       228.99
January 2013..........       223.95
February 2013.........       218.89
March 2013............       213.81
April 2013............       208.72
May 2013..............       203.61
June 2013.............       198.48
July 2013.............       193.34
August 2013...........       188.17
September 2013........       182.99
October 2013..........       177.85
November 2013.........       172.82
December 2013.........       167.76
January 2014..........       162.75
February 2014.........       157.84
March 2014............       152.92
April 2014............       148.03
May 2014..............       143.23
June 2014.............       138.41
July 2014.............       133.58
August 2014...........       128.78
September 2014........       124.07
October 2014..........       119.39
November 2014.........       114.79
December 2014.........       110.22
January 2015..........       105.69
February 2015.........       101.21
March 2015............        96.90
April 2015............        92.67
May 2015..............        88.48
June 2015.............        84.40
July 2015.............        80.31
August 2015...........        76.20
September 2015........        72.08
October 2015..........        67.94
November 2015.........        63.80
December 2015.........        59.63
January 2016..........        55.46
</TABLE>
 
<TABLE>
<CAPTION>
                           EXPECTED
        MONTH           PORTFOLIO VALUE
- ----------------------  ---------------
                         ($ MILLIONS)
<S>                     <C>
February 2016.........        51.47
March 2016............        48.06
April 2016............        45.08
May 2016..............        42.21
June 2016.............        39.32
July 2016.............        36.42
August 2016...........        33.59
September 2016........        30.92
October 2016..........        28.32
November 2016.........        25.71
December 2016.........        23.14
January 2017..........        20.66
February 2017.........        18.17
March 2017............        15.68
April 2017............        13.28
May 2017..............        11.08
June 2017.............         9.03
July 2017.............         7.41
August 2017...........         6.21
September 2017........         5.35
October 2017..........         4.50
November 2017.........         3.70
December 2017.........         3.04
January 2018..........         2.38
February 2018.........         1.87
March 2018............         1.68
April 2018............         1.49
May 2018..............         1.30
June 2018.............         1.10
July 2018.............         0.91
August 2018...........         0.72
September 2018........         0.52
October 2018..........         0.33
November 2018.........         0.13
December 2018.........         0.00
January 2019..........         0.00
February 2019.........         0.00
March 2019............         0.00
April 2019............         0.00
May 2019..............         0.00
June 2019.............         0.00
July 2019.............         0.00
August 2019...........         0.00
September 2019........         0.00
October 2019..........         0.00
</TABLE>
 
<TABLE>
<CAPTION>
<S>                     <C>
                           EXPECTED
        MONTH           PORTFOLIO VALUE
- ----------------------  ---------------
                         ($ MILLIONS)
<S>                     <C>
November 2019.........         0.00
December 2019.........         0.00
January 2020..........         0.00
February 2020.........         0.00
March 2020............         0.00
April 2020............         0.00
May 2020..............         0.00
June 2020.............         0.00
July 2020.............         0.00
August 2020...........         0.00
September 2020........         0.00
October 2020..........         0.00
November 2020.........         0.00
December 2020.........         0.00
January 2021..........         0.00
February 2021.........         0.00
March 2021............         0.00
April 2021............         0.00
May 2021..............         0.00
June 2021.............         0.00
July 2021.............         0.00
August 2021...........         0.00
September 2021........         0.00
October 2021..........         0.00
November 2021.........         0.00
December 2021.........         0.00
January 2022..........         0.00
February 2022.........         0.00
March 2022............         0.00
April 2022............         0.00
May 2022..............         0.00
June 2022.............         0.00
July 2022.............         0.00
August 2022...........         0.00
September 2022........         0.00
October 2022..........         0.00
November 2022.........         0.00
December 2022.........         0.00
January 2023..........         0.00
February 2023.........         0.00
March 2023............         0.00
April 2023............         0.00
May 2023..............         0.00
June 2023.............         0.00
July 2023.............         0.00
</TABLE>
 
                                       A-7
<PAGE>   201
 
                                   APPENDIX 5
 
                           CLASS A CLASS PERCENTAGES
 
<TABLE>
<CAPTION>
                        CLASS A      CLASS A       CLASS A
                        MINIMUM     SCHEDULED    SUPPLEMENTAL
    PAYMENT DATE         CLASS        CLASS         CLASS
    OCCURRING IN       PERCENTAGE   PERCENTAGE    PERCENTAGE
    ------------       ----------   ----------   ------------
<S>                    <C>          <C>          <C>
Closing..............    66.31%       66.31%        66.31%
August 1998..........    66.31%       66.31%        65.69%
September 1998.......    66.31%       66.31%        65.64%
October 1998.........    66.31%       66.31%        65.50%
November 1998........    66.31%       66.31%        65.45%
December 1998........    66.31%       66.31%        65.39%
January 1999.........    66.31%       66.31%        65.27%
February 1999........    66.31%       66.31%        65.22%
March 1999...........    66.30%       66.30%        65.05%
April 1999...........    66.30%       66.30%        64.93%
May 1999.............    66.30%       66.30%        64.96%
June 1999............    66.30%       66.30%        64.90%
July 1999............    66.30%       66.29%        64.76%
August 1999..........    66.29%       66.29%        64.70%
September 1999.......    66.29%       66.29%        64.64%
October 1999.........    66.28%       66.28%        64.49%
November 1999........    66.28%       66.28%        64.44%
December 1999........    66.27%       66.27%        64.36%
January 2000.........    66.27%       66.27%        64.28%
February 2000........    66.26%       66.26%        64.19%
March 2000...........    66.26%       66.25%        64.07%
April 2000...........    66.25%       66.24%        63.99%
May 2000.............    66.24%       66.23%        64.01%
June 2000............    66.23%       66.22%        63.92%
July 2000............    66.22%       66.21%        63.82%
August 2000..........    66.21%       66.20%        63.72%
September 2000.......    66.20%       66.19%        63.63%
October 2000.........    66.19%       66.18%        63.53%
November 2000........    66.18%       66.16%        63.44%
December 2000........    66.16%       66.15%        63.33%
January 2001.........    66.15%       66.13%        63.23%
February 2001........    66.13%       66.11%        63.14%
March 2001...........    66.12%       66.09%        63.00%
April 2001...........    66.10%       66.07%        62.90%
May 2001.............    66.08%       66.05%        62.92%
June 2001............    66.06%       66.03%        62.82%
July 2001............    66.04%       66.01%        62.72%
August 2001..........    66.02%       65.99%        62.62%
September 2001.......    66.00%       65.96%        62.52%
October 2001.........    65.98%       65.93%        62.40%
November 2001........    65.95%       65.90%        62.30%
December 2001........    65.93%       65.88%        62.18%
January 2002.........    65.90%       65.84%        62.08%
February 2002........    65.87%       65.81%        61.97%
March 2002...........    65.85%       65.78%        61.82%
April 2002...........    65.82%       65.74%        61.70%
May 2002.............    65.78%       65.71%        61.71%
June 2002............    65.75%       65.67%        61.60%
July 2002............    65.72%       65.63%        61.46%
August 2002..........    65.68%       65.59%        61.35%
September 2002.......    65.65%       65.55%        61.23%
October 2002.........    65.61%       65.50%        61.10%
November 2002........    65.57%       65.46%        60.98%
December 2002........    65.53%       65.41%        60.84%
</TABLE>
 
<TABLE>
<CAPTION>
                        CLASS A      CLASS A       CLASS A
                        MINIMUM     SCHEDULED    SUPPLEMENTAL
    PAYMENT DATE         CLASS        CLASS         CLASS
    OCCURRING IN       PERCENTAGE   PERCENTAGE    PERCENTAGE
    ------------       ----------   ----------   ------------
<S>                    <C>          <C>          <C>
January 2003.........    65.49%       65.36%        60.72%
February 2003........    65.45%       65.31%        60.59%
March 2003...........    65.41%       65.26%        60.42%
April 2003...........    65.36%       65.20%        60.30%
May 2003.............    65.31%       65.15%        60.30%
June 2003............    65.27%       65.09%        60.17%
July 2003............    65.22%       65.03%        60.03%
August 2003..........    65.16%       64.97%        59.90%
September 2003.......    65.11%       64.90%        59.78%
October 2003.........    65.06%       64.84%        59.64%
November 2003........    65.00%       64.77%        59.50%
December 2003........    64.94%       64.70%        59.36%
January 2004.........    64.89%       64.63%        59.23%
February 2004........    64.82%       64.56%        59.09%
March 2004...........    64.76%       64.48%        58.92%
April 2004...........    64.70%       64.40%        58.79%
May 2004.............    64.63%       64.32%        58.80%
June 2004............    64.57%       64.24%        58.67%
July 2004............    64.50%       64.16%        58.52%
August 2004..........    64.43%       64.07%        58.38%
September 2004.......    64.35%       63.98%        58.25%
October 2004.........    64.28%       63.89%        58.09%
November 2004........    64.20%       63.80%        57.94%
December 2004........    64.13%       63.70%        57.79%
January 2005.........    64.05%       63.61%        57.64%
February 2005........    63.97%       63.51%        57.49%
March 2005...........    63.88%       63.41%        57.30%
April 2005...........    63.80%       63.30%        57.14%
May 2005.............    63.71%       63.19%        57.12%
June 2005............    63.62%       63.08%        56.96%
July 2005............    63.53%       62.97%        56.78%
August 2005..........    63.44%       62.86%        56.61%
September 2005.......    63.35%       62.74%        56.44%
October 2005.........    63.25%       62.62%        56.24%
November 2005........    63.15%       62.50%        56.05%
December 2005........    63.05%       62.38%        55.84%
January 2006.........    62.95%       62.25%        55.65%
February 2006........    62.84%       62.12%        55.45%
March 2006...........    62.74%       61.99%        55.21%
April 2006...........    62.63%       61.85%        54.98%
May 2006.............    62.52%       61.71%        54.91%
June 2006............    62.40%       61.57%        54.69%
July 2006............    62.29%       61.43%        54.45%
August 2006..........    62.17%       61.28%        54.21%
September 2006.......    62.05%       61.13%        53.97%
October 2006.........    61.93%       60.98%        53.70%
November 2006........    61.81%       60.83%        53.40%
December 2006........    61.68%       60.67%        50.87%
January 2007.........    61.55%       60.51%        50.55%
February 2007........    61.42%       60.35%        50.22%
March 2007...........    61.29%       60.18%        49.89%
April 2007...........    61.16%       60.01%        49.56%
May 2007.............    61.02%       59.84%        49.22%
June 2007............    60.88%       59.66%        48.88%
</TABLE>
 
                                       A-8
<PAGE>   202
                    CLASS A CLASS PERCENTAGES -- (CONTINUED)
 
<TABLE>
<CAPTION>
                        CLASS A      CLASS A       CLASS A
                        MINIMUM     SCHEDULED    SUPPLEMENTAL
    PAYMENT DATE         CLASS        CLASS         CLASS
    OCCURRING IN       PERCENTAGE   PERCENTAGE    PERCENTAGE
    ------------       ----------   ----------   ------------
<S>                    <C>          <C>          <C>
July 2007............    60.74%       59.48%        48.54%
August 2007..........    60.59%       59.30%        48.19%
September 2007.......    60.45%       59.12%        47.83%
October 2007.........    60.30%       58.93%        47.48%
November 2007........    60.15%       58.74%        47.12%
December 2007........    59.99%       58.55%        46.75%
January 2008.........    59.84%       58.35%        46.39%
February 2008........    59.68%       58.15%        46.02%
March 2008...........    59.52%       57.94%        45.64%
April 2008...........    59.36%       57.74%        45.26%
May 2008.............    59.19%       57.53%        44.88%
June 2008............    59.02%       57.31%        44.49%
July 2008............    58.85%       57.10%        44.10%
August 2008..........    58.68%       56.88%        43.71%
September 2008.......    58.50%       56.65%        43.31%
October 2008.........    58.32%       56.43%        42.91%
November 2008........    58.14%       56.20%        42.50%
December 2008........    57.96%       55.96%        42.09%
January 2009.........    57.77%       55.72%        41.68%
February 2009........    57.58%       55.48%        41.26%
March 2009...........    57.39%       55.24%        40.84%
April 2009...........    57.19%       54.99%        40.41%
May 2009.............    57.00%       54.74%        39.98%
June 2009............    56.80%       54.48%        39.55%
July 2009............    56.60%       54.22%        39.11%
August 2009..........    56.39%       53.96%        38.67%
September 2009.......    56.18%       53.70%        38.23%
October 2009.........    55.97%       53.43%        37.78%
November 2009........    55.76%       53.15%        37.32%
December 2009........    55.54%       52.88%        36.87%
January 2010.........    55.32%       52.59%        36.41%
February 2010........    55.10%       52.31%        35.94%
March 2010...........    54.88%       52.02%        35.48%
April 2010...........    54.65%       51.73%        35.00%
May 2010.............    54.42%       51.43%        34.53%
June 2010............    54.18%       51.13%        34.05%
July 2010............    53.95%       50.83%        33.56%
August 2010..........    53.71%       50.52%        33.07%
September 2010.......    53.47%       50.21%        32.58%
October 2010.........    53.22%       49.89%        32.09%
November 2010........    52.97%       49.57%        31.59%
December 2010........    52.72%       49.25%        31.08%
January 2011.........    52.47%       48.92%        30.57%
February 2011........    52.21%       48.59%        30.06%
March 2011...........    51.95%       48.25%        29.55%
April 2011...........    51.69%       47.91%        29.03%
May 2011.............    51.42%       47.57%        28.50%
June 2011............    51.15%       47.22%        27.97%
July 2011............    50.88%       46.86%        27.44%
August 2011..........    50.60%       46.51%        26.91%
September 2011.......    50.32%       46.15%        26.37%
October 2011.........    50.04%       45.78%        25.82%
November 2011........    49.76%       45.41%        25.27%
December 2011........    49.47%       45.04%        24.72%
January 2012.........    49.18%       44.66%        24.17%
February 2012........    48.88%       44.27%        23.61%
March 2012...........    48.58%       43.89%        23.04%
</TABLE>
 
<TABLE>
<CAPTION>
                        CLASS A      CLASS A       CLASS A
                        MINIMUM     SCHEDULED    SUPPLEMENTAL
    PAYMENT DATE         CLASS        CLASS         CLASS
    OCCURRING IN       PERCENTAGE   PERCENTAGE    PERCENTAGE
    ------------       ----------   ----------   ------------
<S>                    <C>          <C>          <C>
April 2012...........    48.28%       43.50%        22.47%
May 2012.............    47.98%       43.10%        21.90%
June 2012............    47.67%       42.70%        21.32%
July 2012............    47.36%       42.30%        20.74%
August 2012..........    47.04%       41.89%        20.16%
September 2012.......    46.73%       41.47%        19.57%
October 2012.........    46.41%       41.05%        18.98%
November 2012........    46.08%       40.63%        18.38%
December 2012........    45.75%       40.20%        17.78%
January 2013.........    45.42%       39.77%        17.18%
February 2013........    45.09%       39.33%        16.57%
March 2013...........    44.75%       38.89%        15.95%
April 2013...........    44.41%       38.45%        15.34%
May 2013.............    44.07%       38.00%        14.71%
June 2013............    43.72%       37.54%        14.09%
July 2013............    43.37%       37.08%        13.46%
August 2013..........    43.01%       36.62%        12.83%
September 2013.......    42.65%       36.15%        12.19%
October 2013.........    42.29%       35.67%        11.25%
November 2013........    41.93%       35.19%         9.85%
December 2013........    41.56%       34.71%         8.37%
January 2014.........    41.18%       34.22%         6.81%
February 2014........    40.81%       33.73%         5.18%
March 2014...........    40.43%       33.23%         3.43%
April 2014...........    40.05%       32.73%         1.65%
May 2014.............    39.66%       32.22%         0.00%
June 2014............    39.27%       31.70%         0.00%
July 2014............    38.87%       31.19%         0.00%
August 2014..........    38.48%       30.66%         0.00%
September 2014.......    38.07%       30.13%         0.00%
October 2014.........    37.67%       29.60%         0.00%
November 2014........    37.26%       29.06%         0.00%
December 2014........    36.85%       28.52%         0.00%
January 2015.........    36.43%       27.97%         0.00%
February 2015........    36.01%       27.41%         0.00%
March 2015...........    35.59%       26.86%         0.00%
April 2015...........    35.16%       26.29%         0.00%
May 2015.............    34.73%       25.72%         0.00%
June 2015............    34.29%       25.15%         0.00%
July 2015............    33.85%       24.57%         0.00%
August 2015..........    33.41%       23.98%         0.00%
September 2015.......    32.97%       23.39%         0.00%
October 2015.........    32.51%       22.79%         0.00%
November 2015........    32.06%       22.19%         0.00%
December 2015........    31.60%       21.59%         0.00%
January 2016.........    31.14%       20.97%         0.00%
February 2016........    30.67%       20.36%         0.00%
March 2016...........    30.20%       19.73%         0.00%
April 2016...........    29.73%       19.11%         0.00%
May 2016.............    29.25%       18.47%         0.00%
June 2016............    28.77%       17.83%         0.00%
July 2016............    28.28%       17.19%         0.00%
August 2016..........    27.79%       16.54%         0.00%
September 2016.......    27.30%       15.88%         0.00%
October 2016.........    26.80%       15.22%         0.00%
November 2016........    26.30%       14.55%         0.00%
December 2016........    25.80%       13.88%         0.00%
</TABLE>
 
                                       A-9
<PAGE>   203
                    CLASS A CLASS PERCENTAGES -- (CONTINUED)
 
<TABLE>
<CAPTION>
                        CLASS A      CLASS A       CLASS A
                        MINIMUM     SCHEDULED    SUPPLEMENTAL
    PAYMENT DATE         CLASS        CLASS         CLASS
    OCCURRING IN       PERCENTAGE   PERCENTAGE    PERCENTAGE
    ------------       ----------   ----------   ------------
<S>                    <C>          <C>          <C>
January 2017.........    25.29%       13.20%         0.00%
February 2017........    24.77%       12.52%         0.00%
March 2017...........    24.25%       11.83%         0.00%
April 2017...........    23.73%       11.13%         0.00%
May 2017.............    23.20%       10.43%         0.00%
June 2017............    22.67%        9.72%         0.00%
July 2017............    22.14%        9.01%         0.00%
August 2017..........    21.60%        8.29%         0.00%
September 2017.......    21.06%        7.57%         0.00%
October 2017.........    20.51%        6.84%         0.00%
November 2017........    19.96%        6.10%         0.00%
December 2017........    19.40%        5.36%         0.00%
January 2018.........    18.84%        4.61%         0.00%
February 2018........    18.28%        3.86%         0.00%
March 2018...........    17.71%        3.10%         0.00%
April 2018...........    17.14%        2.33%         0.00%
May 2018.............    16.56%        1.56%         0.00%
June 2018............    15.98%        0.78%         0.00%
July 2018............    15.39%        0.00%         0.00%
August 2018..........    14.80%        0.00%         0.00%
September 2018.......    14.21%        0.00%         0.00%
October 2018.........    13.61%        0.00%         0.00%
November 2018........    13.01%        0.00%         0.00%
December 2018........    12.40%        0.00%         0.00%
January 2019.........    11.79%        0.00%         0.00%
February 2019........    11.17%        0.00%         0.00%
March 2019...........    10.55%        0.00%         0.00%
April 2019...........     9.92%        0.00%         0.00%
May 2019.............     9.29%        0.00%         0.00%
June 2019............     8.66%        0.00%         0.00%
July 2019............     8.02%        0.00%         0.00%
August 2019..........     7.38%        0.00%         0.00%
September 2019.......     6.73%        0.00%         0.00%
October 2019.........     6.08%        0.00%         0.00%
November 2019........     5.42%        0.00%         0.00%
December 2019........     4.76%        0.00%         0.00%
January 2020.........     4.09%        0.00%         0.00%
February 2020........     3.42%        0.00%         0.00%
March 2020...........     2.75%        0.00%         0.00%
April 2020...........     2.07%        0.00%         0.00%
</TABLE>
 
<TABLE>
<CAPTION>
                        CLASS A      CLASS A       CLASS A
                        MINIMUM     SCHEDULED    SUPPLEMENTAL
    PAYMENT DATE         CLASS        CLASS         CLASS
    OCCURRING IN       PERCENTAGE   PERCENTAGE    PERCENTAGE
    ------------       ----------   ----------   ------------
<S>                    <C>          <C>          <C>
May 2020.............     1.38%        0.00%         0.00%
June 2020............     0.69%        0.00%         0.00%
July 2020............     0.00%        0.00%         0.00%
August 2020..........     0.00%        0.00%         0.00%
September 2020.......     0.00%        0.00%         0.00%
October 2020.........     0.00%        0.00%         0.00%
November 2020........     0.00%        0.00%         0.00%
December 2020........     0.00%        0.00%         0.00%
January 2021.........     0.00%        0.00%         0.00%
February 2021........     0.00%        0.00%         0.00%
March 2021...........     0.00%        0.00%         0.00%
April 2021...........     0.00%        0.00%         0.00%
May 2021.............     0.00%        0.00%         0.00%
June 2021............     0.00%        0.00%         0.00%
July 2021............     0.00%        0.00%         0.00%
August 2021..........     0.00%        0.00%         0.00%
September 2021.......     0.00%        0.00%         0.00%
October 2021.........     0.00%        0.00%         0.00%
November 2021........     0.00%        0.00%         0.00%
December 2021........     0.00%        0.00%         0.00%
January 2022.........     0.00%        0.00%         0.00%
February 2022........     0.00%        0.00%         0.00%
March 2022...........     0.00%        0.00%         0.00%
April 2022...........     0.00%        0.00%         0.00%
May 2022.............     0.00%        0.00%         0.00%
June 2022............     0.00%        0.00%         0.00%
July 2022............     0.00%        0.00%         0.00%
August 2022..........     0.00%        0.00%         0.00%
September 2022.......     0.00%        0.00%         0.00%
October 2022.........     0.00%        0.00%         0.00%
November 2022........     0.00%        0.00%         0.00%
December 2022........     0.00%        0.00%         0.00%
January 2023.........     0.00%        0.00%         0.00%
February 2023........     0.00%        0.00%         0.00%
March 2023...........     0.00%        0.00%         0.00%
April 2023...........     0.00%        0.00%         0.00%
May 2023.............     0.00%        0.00%         0.00%
June 2023............     0.00%        0.00%         0.00%
July 2023............     0.00%        0.00%         0.00%
</TABLE>
 
                                      A-10
<PAGE>   204
 
                                   APPENDIX 6
 
                           CLASS B CLASS PERCENTAGES
 
<TABLE>
<CAPTION>
                        CLASS B      CLASS B       CLASS B
                        MINIMUM     SCHEDULED    SUPPLEMENTAL
    PAYMENT DATE         CLASS        CLASS         CLASS
    OCCURRING IN       PERCENTAGE   PERCENTAGE    PERCENTAGE
    ------------       ----------   ----------   ------------
<S>                    <C>          <C>          <C>
Closing..............    8.95%        8.95%         8.95%
August 1998..........    8.95%        8.95%         8.95%
September 1998.......    8.95%        8.95%         8.95%
October 1998.........    8.95%        8.95%         8.94%
November 1998........    8.95%        8.95%         8.94%
December 1998........    8.95%        8.94%         8.94%
January 1999.........    8.95%        8.94%         8.94%
February 1999........    8.95%        8.94%         8.94%
March 1999...........    8.95%        8.94%         8.93%
April 1999...........    8.95%        8.94%         8.93%
May 1999.............    8.95%        8.94%         8.92%
June 1999............    8.95%        8.94%         8.92%
July 1999............    8.95%        8.93%         8.91%
August 1999..........    8.95%        8.93%         8.91%
September 1999.......    8.95%        8.93%         8.90%
October 1999.........    8.95%        8.93%         8.89%
November 1999........    8.95%        8.92%         8.88%
December 1999........    8.95%        8.92%         8.87%
January 2000.........    8.94%        8.91%         8.86%
February 2000........    8.94%        8.91%         8.85%
March 2000...........    8.94%        8.91%         8.84%
April 2000...........    8.94%        8.90%         8.83%
May 2000.............    8.94%        8.89%         8.82%
June 2000............    8.94%        8.89%         8.80%
July 2000............    8.94%        8.88%         8.79%
August 2000..........    8.94%        8.88%         8.78%
September 2000.......    8.94%        8.87%         8.76%
October 2000.........    8.94%        8.86%         8.74%
November 2000........    8.94%        8.85%         8.73%
December 2000........    8.94%        8.84%         8.71%
January 2001.........    8.94%        8.84%         8.69%
February 2001........    8.94%        8.83%         8.67%
March 2001...........    8.94%        8.82%         8.65%
April 2001...........    8.93%        8.81%         8.63%
May 2001.............    8.93%        8.80%         8.60%
June 2001............    8.93%        8.79%         8.58%
July 2001............    8.93%        8.77%         8.56%
August 2001..........    8.93%        8.76%         8.53%
September 2001.......    8.93%        8.75%         8.51%
October 2001.........    8.93%        8.74%         8.48%
November 2001........    8.92%        8.72%         8.45%
December 2001........    8.92%        8.71%         8.42%
January 2002.........    8.92%        8.69%         8.39%
February 2002........    8.92%        8.68%         8.36%
March 2002...........    8.91%        8.66%         8.33%
April 2002...........    8.91%        8.65%         8.30%
May 2002.............    8.91%        8.63%         8.27%
June 2002............    8.91%        8.61%         8.23%
July 2002............    8.90%        8.60%         8.20%
August 2002..........    8.90%        8.58%         8.16%
September 2002.......    8.90%        8.56%         8.13%
October 2002.........    8.89%        8.54%         8.09%
November 2002........    8.89%        8.52%         8.05%
December 2002........    8.89%        8.50%         8.01%
January 2003.........    8.88%        8.48%         7.97%
February 2003........    8.88%        8.46%         7.93%
March 2003...........    8.87%        8.44%         7.89%
</TABLE>
 
<TABLE>
<CAPTION>
                        CLASS B      CLASS B       CLASS B
                        MINIMUM     SCHEDULED    SUPPLEMENTAL
    PAYMENT DATE         CLASS        CLASS         CLASS
    OCCURRING IN       PERCENTAGE   PERCENTAGE    PERCENTAGE
    ------------       ----------   ----------   ------------
<S>                    <C>          <C>          <C>
April 2003...........    8.87%        8.41%         7.84%
May 2003.............    8.86%        8.39%         7.80%
June 2003............    8.86%        8.37%         7.76%
July 2003............    8.85%        8.34%         7.71%
August 2003..........    8.85%        8.32%         7.66%
September 2003.......    8.84%        8.29%         7.61%
October 2003.........    8.84%        8.26%         7.56%
November 2003........    8.83%        8.24%         7.51%
December 2003........    8.82%        8.21%         7.46%
January 2004.........    8.82%        8.18%         7.41%
February 2004........    8.81%        8.15%         7.36%
March 2004...........    8.80%        8.12%         7.30%
April 2004...........    8.79%        8.09%         7.25%
May 2004.............    8.79%        8.06%         7.19%
June 2004............    8.78%        8.03%         7.14%
July 2004............    8.77%        8.00%         7.08%
August 2004..........    8.76%        7.97%         7.02%
September 2004.......    8.75%        7.93%         6.96%
October 2004.........    8.74%        7.90%         6.90%
November 2004........    8.73%        7.87%         6.84%
December 2004........    8.72%        7.83%         6.77%
January 2005.........    8.71%        7.80%         6.71%
February 2005........    8.70%        7.76%         6.64%
March 2005...........    8.69%        7.72%         6.58%
April 2005...........    8.68%        7.68%         6.51%
May 2005.............    8.67%        7.65%         6.44%
June 2005............    8.66%        7.61%         6.37%
July 2005............    8.65%        7.57%         6.30%
August 2005..........    8.63%        7.53%         6.23%
September 2005.......    8.62%        7.48%         6.16%
October 2005.........    8.61%        7.44%         6.08%
November 2005........    8.59%        7.40%         6.01%
December 2005........    8.58%        7.36%         5.93%
January 2006.........    8.56%        7.31%         5.85%
February 2006........    8.55%        7.27%         5.78%
March 2006...........    8.53%        7.22%         5.70%
April 2006...........    8.52%        7.17%         5.62%
May 2006.............    8.50%        7.13%         5.53%
June 2006............    8.48%        7.08%         5.45%
July 2006............    8.47%        7.03%         5.37%
August 2006..........    8.45%        6.98%         5.28%
September 2006.......    8.43%        6.93%         5.20%
October 2006.........    8.41%        6.88%         5.11%
November 2006........    8.39%        6.83%         5.02%
December 2006........    8.37%        6.78%         4.93%
January 2007.........    8.35%        6.72%         4.84%
February 2007........    8.33%        6.67%         4.75%
March 2007...........    8.31%        6.62%         4.66%
April 2007...........    8.29%        6.56%         4.56%
May 2007.............    8.27%        6.50%         4.47%
June 2007............    8.25%        6.45%         4.37%
July 2007............    8.22%        6.39%         4.28%
August 2007..........    8.20%        6.33%         4.18%
September 2007.......    8.18%        6.27%         4.08%
October 2007.........    8.15%        6.21%         3.98%
November 2007........    8.13%        6.15%         3.88%
December 2007........    8.10%        6.09%         3.77%
</TABLE>
 
                                      A-11
<PAGE>   205
                    CLASS B CLASS PERCENTAGES -- (CONTINUED)
 
<TABLE>
<CAPTION>
                        CLASS B      CLASS B       CLASS B
                        MINIMUM     SCHEDULED    SUPPLEMENTAL
    PAYMENT DATE         CLASS        CLASS         CLASS
    OCCURRING IN       PERCENTAGE   PERCENTAGE    PERCENTAGE
    ------------       ----------   ----------   ------------
<S>                    <C>          <C>          <C>
January 2008.........    8.07%        6.03%         3.67%
February 2008........    8.05%        5.96%         3.56%
March 2008...........    8.02%        5.90%         3.46%
April 2008...........    7.99%        5.84%         3.35%
May 2008.............    7.96%        5.77%         3.24%
June 2008............    7.93%        5.70%         3.13%
July 2008............    7.90%        5.64%         3.02%
August 2008..........    7.87%        5.57%         2.91%
September 2008.......    7.84%        5.50%         2.80%
October 2008.........    7.81%        5.43%         2.68%
November 2008........    7.77%        5.36%         2.57%
December 2008........    7.74%        5.29%         2.45%
January 2009.........    7.71%        5.22%         2.33%
February 2009........    7.67%        5.14%         2.21%
March 2009...........    7.64%        5.07%         2.09%
April 2009...........    7.60%        4.99%         1.97%
May 2009.............    7.56%        4.92%         1.85%
June 2009............    7.53%        4.84%         1.72%
July 2009............    7.49%        4.76%         1.60%
August 2009..........    7.45%        4.69%         1.47%
September 2009.......    7.41%        4.61%         1.34%
October 2009.........    7.37%        4.53%         1.21%
November 2009........    7.33%        4.45%         1.08%
December 2009........    7.29%        4.37%         0.95%
January 2010.........    7.24%        4.28%         0.82%
February 2010........    7.20%        4.20%         0.69%
March 2010...........    7.16%        4.12%         0.55%
April 2010...........    7.11%        4.03%         0.42%
May 2010.............    7.07%        3.94%         0.28%
June 2010............    7.02%        3.86%         0.14%
July 2010............    6.97%        3.77%         0.00%
August 2010..........    6.92%        3.68%         0.00%
September 2010.......    6.87%        3.59%         0.00%
October 2010.........    6.82%        3.50%         0.00%
November 2010........    6.77%        3.41%         0.00%
December 2010........    6.72%        3.32%         0.00%
January 2011.........    6.67%        3.23%         0.00%
February 2011........    6.62%        3.13%         0.00%
March 2011...........    6.56%        3.04%         0.00%
April 2011...........    6.51%        2.94%         0.00%
May 2011.............    6.45%        2.84%         0.00%
June 2011............    6.39%        2.75%         0.00%
July 2011............    6.34%        2.65%         0.00%
August 2011..........    6.28%        2.55%         0.00%
September 2011.......    6.22%        2.45%         0.00%
October 2011.........    6.16%        2.35%         0.00%
November 2011........    6.09%        2.24%         0.00%
December 2011........    6.03%        2.14%         0.00%
January 2012.........    5.97%        2.04%         0.00%
February 2012........    5.90%        1.93%         0.00%
March 2012...........    5.84%        1.83%         0.00%
April 2012...........    5.77%        1.72%         0.00%
May 2012.............    5.70%        1.61%         0.00%
June 2012............    5.63%        1.50%         0.00%
July 2012............    5.56%        1.39%         0.00%
August 2012..........    5.49%        1.28%         0.00%
September 2012.......    5.42%        1.17%         0.00%
October 2012.........    5.35%        1.06%         0.00%
November 2012........    5.28%        0.94%         0.00%
December 2012........    5.20%        0.83%         0.00%
</TABLE>
 
<TABLE>
<CAPTION>
                        CLASS B      CLASS B       CLASS B
                        MINIMUM     SCHEDULED    SUPPLEMENTAL
    PAYMENT DATE         CLASS        CLASS         CLASS
    OCCURRING IN       PERCENTAGE   PERCENTAGE    PERCENTAGE
    ------------       ----------   ----------   ------------
<S>                    <C>          <C>          <C>
January 2013.........    5.12%        0.71%         0.00%
February 2013........    5.05%        0.60%         0.00%
March 2013...........    4.97%        0.48%         0.00%
April 2013...........    4.89%        0.36%         0.00%
May 2013.............    4.81%        0.24%         0.00%
June 2013............    4.73%        0.12%         0.00%
July 2013............    4.64%        0.00%         0.00%
August 2013..........    4.56%        0.00%         0.00%
September 2013.......    4.47%        0.00%         0.00%
October 2013.........    4.39%        0.00%         0.00%
November 2013........    4.30%        0.00%         0.00%
December 2013........    4.21%        0.00%         0.00%
January 2014.........    4.12%        0.00%         0.00%
February 2014........    4.03%        0.00%         0.00%
March 2014...........    3.94%        0.00%         0.00%
April 2014...........    3.85%        0.00%         0.00%
May 2014.............    3.75%        0.00%         0.00%
June 2014............    3.65%        0.00%         0.00%
July 2014............    3.56%        0.00%         0.00%
August 2014..........    3.46%        0.00%         0.00%
September 2014.......    3.36%        0.00%         0.00%
October 2014.........    3.26%        0.00%         0.00%
November 2014........    3.15%        0.00%         0.00%
December 2014........    3.05%        0.00%         0.00%
January 2015.........    2.95%        0.00%         0.00%
February 2015........    2.84%        0.00%         0.00%
March 2015...........    2.73%        0.00%         0.00%
April 2015...........    2.62%        0.00%         0.00%
May 2015.............    2.51%        0.00%         0.00%
June 2015............    2.40%        0.00%         0.00%
July 2015............    2.29%        0.00%         0.00%
August 2015..........    2.17%        0.00%         0.00%
September 2015.......    2.06%        0.00%         0.00%
October 2015.........    1.94%        0.00%         0.00%
November 2015........    1.82%        0.00%         0.00%
December 2015........    1.70%        0.00%         0.00%
January 2016.........    1.58%        0.00%         0.00%
February 2016........    1.45%        0.00%         0.00%
March 2016...........    1.33%        0.00%         0.00%
April 2016...........    1.20%        0.00%         0.00%
May 2016.............    1.08%        0.00%         0.00%
June 2016............    0.95%        0.00%         0.00%
July 2016............    0.82%        0.00%         0.00%
August 2016..........    0.68%        0.00%         0.00%
September 2016.......    0.55%        0.00%         0.00%
October 2016.........    0.41%        0.00%         0.00%
November 2016........    0.28%        0.00%         0.00%
December 2016........    0.14%        0.00%         0.00%
January 2017.........    0.00%        0.00%         0.00%
February 2017........    0.00%        0.00%         0.00%
March 2017...........    0.00%        0.00%         0.00%
April 2017...........    0.00%        0.00%         0.00%
May 2017.............    0.00%        0.00%         0.00%
June 2017............    0.00%        0.00%         0.00%
July 2017............    0.00%        0.00%         0.00%
August 2017..........    0.00%        0.00%         0.00%
September 2017.......    0.00%        0.00%         0.00%
October 2017.........    0.00%        0.00%         0.00%
November 2017........    0.00%        0.00%         0.00%
December 2017........    0.00%        0.00%         0.00%
</TABLE>
 
                                      A-12
<PAGE>   206
                    CLASS B CLASS PERCENTAGES -- (CONTINUED)
 
<TABLE>
<CAPTION>
                        CLASS B      CLASS B       CLASS B
                        MINIMUM     SCHEDULED    SUPPLEMENTAL
    PAYMENT DATE         CLASS        CLASS         CLASS
    OCCURRING IN       PERCENTAGE   PERCENTAGE    PERCENTAGE
    ------------       ----------   ----------   ------------
<S>                    <C>          <C>          <C>
January 2018.........    0.00%        0.00%         0.00%
February 2018........    0.00%        0.00%         0.00%
March 2018...........    0.00%        0.00%         0.00%
April 2018...........    0.00%        0.00%         0.00%
</TABLE>
 
<TABLE>
<CAPTION>
                        CLASS B      CLASS B       CLASS B
                        MINIMUM     SCHEDULED    SUPPLEMENTAL
    PAYMENT DATE         CLASS        CLASS         CLASS
    OCCURRING IN       PERCENTAGE   PERCENTAGE    PERCENTAGE
    ------------       ----------   ----------   ------------
<S>                    <C>          <C>          <C>
May 2018.............    0.00%        0.00%         0.00%
June 2018............    0.00%        0.00%         0.00%
July 2018............    0.00%        0.00%         0.00%
</TABLE>
 
                                      A-13
<PAGE>   207
 
                                   APPENDIX 7
 
                       CLASS C TARGET PRINCIPAL BALANCES
 
<TABLE>
<CAPTION>
                                    CLASS C      CLASS C
                                    MINIMUM     SCHEDULED
                                     TARGET       TARGET
          PAYMENT DATE             PRINCIPAL    PRINCIPAL
          OCCURRING IN              BALANCE      BALANCE
          ------------             ----------   ----------
<S>                                <C>          <C>
Closing..........................  85,000,000   85,000,000
August 1998......................  84,999,964   84,999,416
September 1998...................  84,999,771   84,997,144
October 1998.....................  84,999,323   84,992,775
November 1998....................  84,998,536   84,986,041
December 1998....................  84,997,339   84,976,736
January 1999.....................  84,995,662   84,964,685
February 1999....................  84,993,444   84,949,741
March 1999.......................  84,990,625   84,931,771
April 1999.......................  84,987,146   84,910,655
May 1999.........................  84,982,954   84,886,285
June 1999........................  84,977,996   84,858,559
July 1999........................  84,972,219   84,827,383
August 1999......................  84,965,574   84,792,671
September 1999...................  84,958,013   84,754,338
October 1999.....................  84,949,488   84,712,306
November 1999....................  84,939,954   84,666,501
December 1999....................  84,929,364   84,616,851
January 2000.....................  84,917,675   84,563,288
February 2000....................  84,904,843   84,505,748
March 2000.......................  84,890,826   84,444,168
April 2000.......................  84,875,580   84,378,486
May 2000.........................  84,859,065   84,308,645
June 2000........................  84,841,240   84,234,589
July 2000........................  84,822,065   84,156,262
August 2000......................  84,801,501   84,073,613
September 2000...................  84,779,508   83,986,589
October 2000.....................  84,756,047   83,895,140
November 2000....................  84,731,081   83,799,219
December 2000....................  84,704,572   83,698,778
January 2001.....................  84,676,483   83,593,770
February 2001....................  84,646,776   83,484,152
March 2001.......................  84,615,416   83,369,877
April 2001.......................  84,582,367   83,250,905
May 2001.........................  84,547,592   83,127,193
June 2001........................  84,511,057   82,998,699
July 2001........................  84,472,726   82,865,384
August 2001......................  84,432,564   82,727,207
September 2001...................  84,390,539   82,584,131
October 2001.....................  84,346,614   82,436,118
November 2001....................  84,300,757   82,283,129
December 2001....................  84,252,934   82,125,129
January 2002.....................  84,203,111   81,962,082
February 2002....................  84,151,257   81,793,952
March 2002.......................  84,097,337   81,620,705
April 2002.......................  84,041,319   81,442,306
May 2002.........................  83,983,172   81,258,722
June 2002........................  83,922,863   81,069,920
July 2002........................  83,860,361   80,875,867
August 2002......................  83,795,633   80,676,532
September 2002...................  83,728,649   80,471,882
October 2002.....................  83,659,377   80,261,886
November 2002....................  83,587,786   80,046,514
December 2002....................  83,513,846   79,825,736
January 2003.....................  83,437,525   79,599,522
February 2003....................  83,358,794   79,367,841
</TABLE>
 
<TABLE>
<CAPTION>
                                    CLASS C      CLASS C
                                    MINIMUM     SCHEDULED
                                     TARGET       TARGET
          PAYMENT DATE             PRINCIPAL    PRINCIPAL
          OCCURRING IN              BALANCE      BALANCE
          ------------             ----------   ----------
<S>                                <C>          <C>
March 2003.......................  83,277,622   79,130,666
April 2003.......................  83,193,980   78,887,966
May 2003.........................  83,107,836   78,639,715
June 2003........................  83,019,163   78,385,884
July 2003........................  82,927,929   78,126,445
August 2003......................  82,834,106   77,861,372
September 2003...................  82,737,664   77,590,636
October 2003.....................  82,638,575   77,314,211
November 2003....................  82,536,809   77,032,072
December 2003....................  82,432,338   76,744,191
January 2004.....................  82,325,133   76,450,543
February 2004....................  82,215,165   76,151,103
March 2004.......................  82,102,407   75,845,845
April 2004.......................  81,986,829   75,534,744
May 2004.........................  81,868,404   75,217,776
June 2004........................  81,747,104   74,894,916
July 2004........................  81,622,901   74,566,140
August 2004......................  81,495,768   74,231,423
September 2004...................  81,365,676   73,890,743
October 2004.....................  81,232,598   73,544,076
November 2004....................  81,096,508   73,191,397
December 2004....................  80,957,377   72,832,685
January 2005.....................  80,815,178   72,467,917
February 2005....................  80,669,886   72,097,069
March 2005.......................  80,521,472   71,720,119
April 2005.......................  80,369,909   71,337,046
May 2005.........................  80,215,173   70,947,826
June 2005........................  80,057,234   70,552,439
July 2005........................  79,896,069   70,150,862
August 2005......................  79,731,649   69,743,075
September 2005...................  79,563,948   69,329,055
October 2005.....................  79,392,941   68,908,782
November 2005....................  79,218,601   68,482,234
December 2005....................  79,040,903   68,049,391
January 2006.....................  78,859,821   67,610,233
February 2006....................  78,675,328   67,164,738
March 2006.......................  78,487,399   66,712,887
April 2006.......................  78,296,008   66,254,660
May 2006.........................  78,101,131   65,790,036
June 2006........................  77,902,741   65,318,996
July 2006........................  77,700,813   64,841,519
August 2006......................  77,495,323   64,357,587
September 2006...................  77,286,244   63,867,181
October 2006.....................  77,073,552   63,370,280
November 2006....................  76,857,221   62,866,866
December 2006....................  76,637,227   62,356,919
January 2007.....................  76,413,546   61,840,422
February 2007....................  76,186,151   61,317,355
March 2007.......................  75,955,019   60,787,699
April 2007.......................  75,720,125   60,251,437
May 2007.........................  75,481,444   59,708,550
June 2007........................  75,238,952   59,159,020
July 2007........................  74,992,625   58,602,829
August 2007......................  74,742,437   58,039,958
September 2007...................  74,488,366   57,470,390
October 2007.....................  74,230,387   56,894,107
</TABLE>
 
                                      A-14
<PAGE>   208
                CLASS C TARGET PRINCIPAL BALANCES -- (CONTINUED)
 
<TABLE>
<CAPTION>
                                    CLASS C      CLASS C
                                    MINIMUM     SCHEDULED
                                     TARGET       TARGET
          PAYMENT DATE             PRINCIPAL    PRINCIPAL
          OCCURRING IN              BALANCE      BALANCE
          ------------             ----------   ----------
<S>                                <C>          <C>
November 2007....................  73,968,475   56,311,092
December 2007....................  73,702,607   55,721,328
January 2008.....................  73,432,759   55,124,795
February 2008....................  73,158,907   54,521,479
March 2008.......................  72,881,027   53,911,361
April 2008.......................  72,599,095   53,294,424
May 2008.........................  72,313,087   52,670,651
June 2008........................  72,022,981   52,040,026
July 2008........................  71,728,752   51,402,532
August 2008......................  71,430,377   50,758,152
September 2008...................  71,127,832   50,106,869
October 2008.....................  70,821,094   49,448,668
November 2008....................  70,510,141   48,783,531
December 2008....................  70,194,947   48,111,443
January 2009.....................  69,875,491   47,432,387
February 2009....................  69,551,750   46,746,347
March 2009.......................  69,223,699   46,053,307
April 2009.......................  68,891,317   45,353,252
May 2009.........................  68,554,580   44,646,166
June 2009........................  68,213,465   43,932,032
July 2009........................  67,867,949   43,210,836
August 2009......................  67,518,010   42,482,561
September 2009...................  67,163,626   41,747,192
October 2009.....................  66,804,772   41,004,714
November 2009....................  66,441,427   40,255,112
December 2009....................  66,073,568   39,498,370
January 2010.....................  65,701,172   38,734,473
February 2010....................  65,324,218   37,963,406
March 2010.......................  64,942,682   37,185,154
April 2010.......................  64,556,543   36,399,702
May 2010.........................  64,165,777   35,607,036
June 2010........................  63,770,364   34,807,140
July 2010........................  63,370,280   34,000,000
August 2010......................  62,965,503   33,185,601
September 2010...................  62,556,011   32,363,929
October 2010.....................  62,141,783   31,534,970
November 2010....................  61,722,796   30,698,708
December 2010....................  61,299,028   29,855,129
January 2011.....................  60,870,458   29,004,220
February 2011....................  60,437,063   28,145,966
March 2011.......................  59,998,821   27,280,353
April 2011.......................  59,555,712   26,407,366
May 2011.........................  59,107,712   25,526,993
June 2011........................  58,654,801   24,639,218
July 2011........................  58,196,957   23,744,029
August 2011......................  57,734,158   22,841,410
September 2011...................  57,266,383   21,931,349
October 2011.....................  56,793,609   21,013,832
November 2011....................  56,315,817   20,088,846
December 2011....................  55,832,984   19,156,376
January 2012.....................  55,345,088   18,216,409
February 2012....................  54,852,110   17,268,931
March 2012.......................  54,354,026   16,313,931
April 2012.......................  53,850,817   15,351,393
May 2012.........................  53,342,460   14,381,305
June 2012........................  52,828,936   13,403,653
July 2012........................  52,310,221   12,418,425
August 2012......................  51,786,296   11,425,607
September 2012...................  51,257,140   10,425,186
</TABLE>
 
<TABLE>
<CAPTION>
                                    CLASS C      CLASS C
                                    MINIMUM     SCHEDULED
                                     TARGET       TARGET
          PAYMENT DATE             PRINCIPAL    PRINCIPAL
          OCCURRING IN              BALANCE      BALANCE
          ------------             ----------   ----------
<S>                                <C>          <C>
October 2012.....................  50,722,731    9,417,150
November 2012....................  50,183,048    8,401,485
December 2012....................  49,638,071    7,378,179
January 2013.....................  49,087,778    6,347,218
February 2013....................  48,532,150    5,308,590
March 2013.......................  47,971,164    4,262,282
April 2013.......................  47,404,800    3,208,282
May 2013.........................  46,833,038    2,146,576
June 2013........................  46,255,857    1,077,153
July 2013........................  45,673,236            0
August 2013......................  45,085,154            0
September 2013...................  44,491,591            0
October 2013.....................  43,892,527            0
November 2013....................  43,287,940            0
December 2013....................  42,677,811            0
January 2014.....................  42,062,119            0
February 2014....................  41,440,843            0
March 2014.......................  40,813,963            0
April 2014.......................  40,181,459            0
May 2014.........................  39,543,311            0
June 2014........................  38,899,498            0
July 2014........................  38,250,000            0
August 2014......................  37,594,797            0
September 2014...................  36,933,868            0
October 2014.....................  36,267,194            0
November 2014....................  35,594,755            0
December 2014....................  34,916,529            0
January 2015.....................  34,232,499            0
February 2015....................  33,542,642            0
March 2015.......................  32,846,940            0
April 2015.......................  32,145,372            0
May 2015.........................  31,437,919            0
June 2015........................  30,724,560            0
July 2015........................  30,005,277            0
August 2015......................  29,280,048            0
September 2015...................  28,548,854            0
October 2015.....................  27,811,676            0
November 2015....................  27,068,494            0
December 2015....................  26,319,288            0
January 2016.....................  25,564,038            0
February 2016....................  24,802,726            0
March 2016.......................  24,035,330            0
April 2016.......................  23,261,832            0
May 2016.........................  22,482,212            0
June 2016........................  21,696,451            0
July 2016........................  20,904,529            0
August 2016......................  20,106,427            0
September 2016...................  19,302,124            0
October 2016.....................  18,491,603            0
November 2016....................  17,674,843            0
December 2016....................  16,851,826            0
January 2017.....................  16,022,531            0
February 2017....................  15,186,940            0
March 2017.......................  14,345,034            0
April 2017.......................  13,496,792            0
May 2017.........................  12,642,197            0
June 2017........................  11,781,228            0
July 2017........................  10,913,867            0
August 2017......................  10,040,094            0
</TABLE>
 
                                      A-15
<PAGE>   209
                CLASS C TARGET PRINCIPAL BALANCES -- (CONTINUED)
 
<TABLE>
<CAPTION>
                                    CLASS C      CLASS C
                                    MINIMUM     SCHEDULED
                                     TARGET       TARGET
          PAYMENT DATE             PRINCIPAL    PRINCIPAL
          OCCURRING IN              BALANCE      BALANCE
          ------------             ----------   ----------
<S>                                <C>          <C>
September 2017...................  9,159,891             0
October 2017.....................  8,273,238             0
November 2017....................  7,380,117             0
December 2017....................  6,480,508             0
January 2018.....................  5,574,392             0
February 2018....................  4,661,751             0
</TABLE>
 
<TABLE>
<CAPTION>
                                    CLASS C      CLASS C
                                    MINIMUM     SCHEDULED
                                     TARGET       TARGET
          PAYMENT DATE             PRINCIPAL    PRINCIPAL
          OCCURRING IN              BALANCE      BALANCE
          ------------             ----------   ----------
<S>                                <C>          <C>
March 2018.......................  3,742,566             0
April 2018.......................  2,816,816             0
May 2018.........................  1,884,485             0
June 2018........................    945,552             0
July 2018........................          0             0
</TABLE>
 
                                      A-16
<PAGE>   210
 
                                   APPENDIX 8
 
                       CLASS D TARGET PRINCIPAL BALANCES
 
<TABLE>
<CAPTION>
                                    CLASS D      CLASS D
                                    MINIMUM     SCHEDULED
                                     TARGET       TARGET
          PAYMENT DATE             PRINCIPAL    PRINCIPAL
          OCCURRING IN              BALANCE      BALANCE
          ------------             ----------   ----------
                                       $            $
<S>                                <C>          <C>
Closing..........................  80,000,000   80,000,000
August 1998......................  80,000,000   80,000,000
September 1998...................  80,000,000   80,000,000
October 1998.....................  80,000,000   80,000,000
November 1998....................  80,000,000   80,000,000
December 1998....................  80,000,000   80,000,000
January 1999.....................  80,000,000   80,000,000
February 1999....................  80,000,000   80,000,000
March 1999.......................  80,000,000   80,000,000
April 1999.......................  80,000,000   80,000,000
May 1999.........................  80,000,000   80,000,000
June 1999........................  80,000,000   80,000,000
July 1999........................  80,000,000   80,000,000
August 1999......................  80,000,000   80,000,000
September 1999...................  80,000,000   80,000,000
October 1999.....................  80,000,000   80,000,000
November 1999....................  80,000,000   80,000,000
December 1999....................  80,000,000   80,000,000
January 2000.....................  80,000,000   80,000,000
February 2000....................  80,000,000   80,000,000
March 2000.......................  80,000,000   80,000,000
April 2000.......................  80,000,000   80,000,000
May 2000.........................  80,000,000   80,000,000
June 2000........................  80,000,000   80,000,000
July 2000........................  80,000,000   80,000,000
August 2000......................  80,000,000   80,000,000
September 2000...................  80,000,000   80,000,000
October 2000.....................  80,000,000   80,000,000
November 2000....................  80,000,000   80,000,000
December 2000....................  80,000,000   80,000,000
January 2001.....................  80,000,000   80,000,000
February 2001....................  80,000,000   80,000,000
March 2001.......................  80,000,000   80,000,000
April 2001.......................  80,000,000   80,000,000
May 2001.........................  80,000,000   80,000,000
June 2001........................  80,000,000   80,000,000
July 2001........................  80,000,000   80,000,000
August 2001......................  80,000,000   80,000,000
September 2001...................  80,000,000   80,000,000
October 2001.....................  80,000,000   80,000,000
November 2001....................  80,000,000   80,000,000
December 2001....................  80,000,000   80,000,000
January 2002.....................  80,000,000   80,000,000
February 2002....................  80,000,000   80,000,000
March 2002.......................  80,000,000   80,000,000
April 2002.......................  80,000,000   80,000,000
May 2002.........................  80,000,000   80,000,000
June 2002........................  80,000,000   80,000,000
July 2002........................  80,000,000   80,000,000
August 2002......................  80,000,000   80,000,000
September 2002...................  80,000,000   80,000,000
October 2002.....................  80,000,000   80,000,000
November 2002....................  80,000,000   80,000,000
December 2002....................  80,000,000   80,000,000
January 2003.....................  80,000,000   80,000,000
</TABLE>
 
<TABLE>
<CAPTION>
                                       $            $
                                    CLASS D      CLASS D
                                    MINIMUM     SCHEDULED
                                     TARGET       TARGET
          PAYMENT DATE             PRINCIPAL    PRINCIPAL
          OCCURRING IN              BALANCE      BALANCE
          ------------             ----------   ----------
<S>                                <C>          <C>
February 2003....................  80,000,000   80,000,000
March 2003.......................  80,000,000   80,000,000
April 2003.......................  80,000,000   80,000,000
May 2003.........................  80,000,000   80,000,000
June 2003........................  80,000,000   80,000,000
July 2003........................  80,000,000   80,000,000
August 2003......................  80,000,000   80,000,000
September 2003...................  80,000,000   80,000,000
October 2003.....................  80,000,000   80,000,000
November 2003....................  80,000,000   80,000,000
December 2003....................  80,000,000   80,000,000
January 2004.....................  80,000,000   80,000,000
February 2004....................  80,000,000   80,000,000
March 2004.......................  80,000,000   80,000,000
April 2004.......................  80,000,000   80,000,000
May 2004.........................  80,000,000   80,000,000
June 2004........................  80,000,000   80,000,000
July 2004........................  80,000,000   80,000,000
August 2004......................  80,000,000   80,000,000
September 2004...................  80,000,000   80,000,000
October 2004.....................  80,000,000   80,000,000
November 2004....................  80,000,000   80,000,000
December 2004....................  80,000,000   80,000,000
January 2005.....................  80,000,000   80,000,000
February 2005....................  80,000,000   80,000,000
March 2005.......................  80,000,000   80,000,000
April 2005.......................  80,000,000   80,000,000
May 2005.........................  80,000,000   80,000,000
June 2005........................  80,000,000   80,000,000
July 2005........................  80,000,000   80,000,000
August 2005......................  80,000,000   80,000,000
September 2005...................  80,000,000   80,000,000
October 2005.....................  80,000,000   80,000,000
November 2005....................  80,000,000   80,000,000
December 2005....................  80,000,000   80,000,000
January 2006.....................  80,000,000   80,000,000
February 2006....................  80,000,000   80,000,000
March 2006.......................  80,000,000   80,000,000
April 2006.......................  80,000,000   80,000,000
May 2006.........................  80,000,000   80,000,000
June 2006........................  80,000,000   80,000,000
July 2006........................  80,000,000   80,000,000
August 2006......................  80,000,000   80,000,000
September 2006...................  80,000,000   80,000,000
October 2006.....................  80,000,000   80,000,000
November 2006....................  80,000,000   80,000,000
December 2006....................  80,000,000   80,000,000
January 2007.....................  80,000,000   79,774,880
February 2007....................  80,000,000   79,328,760
March 2007.......................  80,000,000   78,873,970
April 2007.......................  80,000,000   78,410,461
May 2007.........................  80,000,000   77,938,186
June 2007........................  80,000,000   77,457,096
July 2007........................  80,000,000   76,967,146
August 2007......................  80,000,000   76,468,290
</TABLE>
 
                                      A-17
<PAGE>   211
                CLASS D TARGET PRINCIPAL BALANCES -- (CONTINUED)
 
<TABLE>
<CAPTION>
                                    CLASS D      CLASS D
                                    MINIMUM     SCHEDULED
                                     TARGET       TARGET
          PAYMENT DATE             PRINCIPAL    PRINCIPAL
          OCCURRING IN              BALANCE      BALANCE
          ------------             ----------   ----------
                                       $            $
<S>                                <C>          <C>
September 2007...................  80,000,000   75,960,480
October 2007.....................  80,000,000   75,443,671
November 2007....................  80,000,000   74,917,819
December 2007....................  80,000,000   74,382,876
January 2008.....................  80,000,000   73,838,800
February 2008....................  80,000,000   73,285,546
March 2008.......................  80,000,000   72,723,068
April 2008.......................  80,000,000   72,151,325
May 2008.........................  80,000,000   71,570,271
June 2008........................  80,000,000   70,979,864
July 2008........................  80,000,000   70,380,061
August 2008......................  80,000,000   69,770,819
September 2008...................  80,000,000   69,152,097
October 2008.....................  80,000,000   68,523,851
November 2008....................  80,000,000   67,886,040
December 2008....................  80,000,000   67,238,622
January 2009.....................  80,000,000   66,581,557
February 2009....................  80,000,000   65,914,803
March 2009.......................  80,000,000   65,238,319
April 2009.......................  80,000,000   64,552,065
May 2009.........................  80,000,000   63,856,000
June 2009........................  80,000,000   63,150,085
July 2009........................  80,000,000   62,434,280
August 2009......................  80,000,000   61,708,545
September 2009...................  80,000,000   60,972,841
October 2009.....................  80,000,000   60,227,129
November 2009....................  80,000,000   59,471,369
December 2009....................  80,000,000   58,705,524
January 2010.....................  80,000,000   57,929,554
February 2010....................  80,000,000   57,143,422
March 2010.......................  80,000,000   56,347,089
April 2010.......................  80,000,000   55,540,518
May 2010.........................  80,000,000   54,723,670
June 2010........................  80,000,000   53,896,510
July 2010........................  80,000,000   53,058,998
August 2010......................  80,000,000   52,211,100
September 2010...................  80,000,000   51,352,776
October 2010.....................  80,000,000   50,483,992
November 2010....................  80,000,000   49,604,710
December 2010....................  80,000,000   48,714,894
January 2011.....................  80,000,000   47,814,508
February 2011....................  80,000,000   46,903,516
March 2011.......................  80,000,000   45,981,883
April 2011.......................  80,000,000   45,049,573
May 2011.........................  80,000,000   44,106,550
June 2011........................  79,765,353   43,152,779
July 2011........................  79,419,181   42,188,226
August 2011......................  79,067,271   41,212,855
September 2011...................  78,709,580   40,226,632
October 2011.....................  78,346,069   39,229,522
November 2011....................  77,976,695   38,221,491
December 2011....................  77,601,419   37,202,504
January 2012.....................  77,220,200   36,172,528
February 2012....................  76,832,996   35,131,528
March 2012.......................  76,439,767   34,079,471
April 2012.......................  76,040,472   33,016,323
May 2012.........................  75,635,072   31,942,051
June 2012........................  75,223,524   30,856,621
</TABLE>
 
<TABLE>
<CAPTION>
                                       $            $
                                    CLASS D      CLASS D
                                    MINIMUM     SCHEDULED
                                     TARGET       TARGET
          PAYMENT DATE             PRINCIPAL    PRINCIPAL
          OCCURRING IN              BALANCE      BALANCE
          ------------             ----------   ----------
<S>                                <C>          <C>
July 2012........................  74,805,790   29,760,000
August 2012......................  74,381,829   28,652,155
September 2012...................  73,951,600   27,533,054
October 2012.....................  73,515,063   26,402,663
November 2012....................  73,072,179   25,260,950
December 2012....................  72,622,907   24,107,883
January 2013.....................  72,167,207   22,943,429
February 2013....................  71,705,040   21,767,555
March 2013.......................  71,236,366   20,580,230
April 2013.......................  70,761,145   19,381,423
May 2013.........................  70,279,337   18,171,100
June 2013........................  69,790,903   16,949,231
July 2013........................  69,295,804   15,715,783
August 2013......................  68,793,999   14,470,726
September 2013...................  68,285,450   13,214,028
October 2013.....................  67,770,118   11,945,658
November 2013....................  67,247,962   10,000,000
December 2013....................  66,718,944    8,000,000
January 2014.....................  66,183,025    6,000,000
February 2014....................  65,640,166    4,000,000
March 2014.......................  65,090,327    2,000,000
April 2014.......................  64,533,470            0
May 2014.........................  63,969,557            0
June 2014........................  63,398,547            0
July 2014........................  62,820,403            0
August 2014......................  62,235,085            0
September 2014...................  61,642,556            0
October 2014.....................  61,042,777            0
November 2014....................  60,435,708            0
December 2014....................  59,821,312            0
January 2015.....................  59,199,551            0
February 2015....................  58,570,385            0
March 2015.......................  57,933,778            0
April 2015.......................  57,289,689            0
May 2015.........................  56,638,083            0
June 2015........................  55,978,919            0
July 2015........................  55,312,161            0
August 2015......................  54,637,770            0
September 2015...................  53,955,709            0
October 2015.....................  53,265,939            0
November 2015....................  52,568,422            0
December 2015....................  51,863,122            0
January 2016.....................  51,150,000            0
February 2016....................  50,429,018            0
March 2016.......................  49,700,140            0
April 2016.......................  48,963,327            0
May 2016.........................  48,218,541            0
June 2016........................  47,465,747            0
July 2016........................  46,704,905            0
August 2016......................  45,935,979            0
September 2016...................  45,158,931            0
October 2016.....................  44,373,724            0
November 2016....................  43,580,322            0
December 2016....................  42,778,686            0
January 2017.....................  41,968,780            0
February 2017....................  41,150,566            0
March 2017.......................  40,324,009            0
April 2017.......................  39,489,069            0
</TABLE>
 
                                      A-18
<PAGE>   212
                CLASS D TARGET PRINCIPAL BALANCES -- (CONTINUED)
 
<TABLE>
<CAPTION>
                                    CLASS D      CLASS D
                                    MINIMUM     SCHEDULED
                                     TARGET       TARGET
          PAYMENT DATE             PRINCIPAL    PRINCIPAL
          OCCURRING IN              BALANCE      BALANCE
          ------------             ----------   ----------
                                       $            $
<S>                                <C>          <C>
May 2017.........................  38,645,712            0
June 2017........................  37,793,899            0
July 2017........................  36,933,595            0
August 2017......................  36,064,762            0
September 2017...................  35,187,363            0
October 2017.....................  34,301,362            0
November 2017....................  33,406,723            0
December 2017....................  32,503,408            0
January 2018.....................  31,591,381            0
February 2018....................  30,670,606            0
March 2018.......................  29,741,046            0
April 2018.......................  28,802,664            0
May 2018.........................  27,855,425            0
June 2018........................  26,899,292            0
July 2018........................  25,934,229            0
August 2018......................  24,960,199            0
September 2018...................  23,977,166            0
October 2018.....................  22,985,094            0
November 2018....................  21,983,948            0
December 2018....................  20,973,690            0
January 2019.....................  19,954,285            0
February 2019....................  18,925,698            0
March 2019.......................  17,887,891            0
April 2019.......................  16,840,829            0
May 2019.........................  15,784,476            0
June 2019........................  14,718,796            0
July 2019........................  13,643,754            0
August 2019......................  12,559,314            0
September 2019...................  11,465,440            0
October 2019.....................  10,362,096            0
November 2019....................  9,249,247             0
December 2019....................  8,126,857             0
January 2020.....................  6,994,890             0
February 2020....................  5,853,312             0
March 2020.......................  4,702,086             0
April 2020.......................  3,541,177             0
May 2020.........................  2,370,550             0
June 2020........................  1,190,170             0
</TABLE>
 
<TABLE>
<CAPTION>
                                       $            $
                                    CLASS D      CLASS D
                                    MINIMUM     SCHEDULED
                                     TARGET       TARGET
          PAYMENT DATE             PRINCIPAL    PRINCIPAL
          OCCURRING IN              BALANCE      BALANCE
          ------------             ----------   ----------
<S>                                <C>          <C>
July 2020........................          0             0
August 2020......................          0             0
September 2020...................          0             0
October 2020.....................          0             0
November 2020....................          0             0
December 2020....................          0             0
January 2021.....................          0             0
February 2021....................          0             0
March 2021.......................          0             0
April 2021.......................          0             0
May 2021.........................          0             0
June 2021........................          0             0
July 2021........................          0             0
August 2021......................          0             0
September 2021...................          0             0
October 2021.....................          0             0
November 2021....................          0             0
December 2021....................          0             0
January 2022.....................          0             0
February 2022....................          0             0
March 2022.......................          0             0
April 2022.......................          0             0
May 2022.........................          0             0
June 2022........................          0             0
July 2022........................          0             0
August 2022......................          0             0
September 2022...................          0             0
October 2022.....................          0             0
November 2022....................          0             0
December 2022....................          0             0
January 2023.....................          0             0
February 2023....................          0             0
March 2023.......................          0             0
April 2023.......................          0             0
May 2023.........................          0             0
June 2023........................          0             0
July 2023........................          0             0
</TABLE>
 
                                      A-19
<PAGE>   213
 
                                   APPENDIX 9
 
                                  POOL FACTORS
 
<TABLE>
<CAPTION>
    PAYMENT DATE       SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS
    OCCURRING IN         A-1        A-2        B-1        C-1        D-1
    ------------       --------   --------   --------   --------   --------
<S>                    <C>        <C>        <C>        <C>        <C>
Closing..............  100.00%    100.00%    100.00%    100.00%    100.00%
August 1998..........  100.00%     99.21%     99.94%    100.00%    100.00%
September 1998.......  100.00%     98.10%     99.60%    100.00%    100.00%
October 1998.........  100.00%     96.70%     99.25%     99.99%    100.00%
November 1998........  100.00%     95.58%     98.91%     99.98%    100.00%
December 1998........  100.00%     94.44%     98.45%     99.97%    100.00%
January 1999.........  100.00%     93.11%     98.10%     99.96%    100.00%
February 1999........  100.00%     92.00%     97.75%     99.94%    100.00%
March 1999...........  100.00%     90.50%     97.40%     99.92%    100.00%
April 1999...........  100.00%     89.35%     97.05%     99.89%    100.00%
May 1999.............  100.00%     88.69%     96.69%     99.87%    100.00%
June 1999............  100.00%     87.75%     96.34%     99.83%    100.00%
July 1999............  100.00%     86.55%     95.87%     99.80%    100.00%
August 1999..........  100.00%     85.60%     95.52%     99.76%    100.00%
September 1999.......  100.00%     84.65%     95.16%     99.71%    100.00%
October 1999.........  100.00%     83.42%     94.80%     99.66%    100.00%
November 1999........  100.00%     82.49%     94.33%     99.61%    100.00%
December 1999........  100.00%     81.48%     93.97%     99.55%    100.00%
January 2000.........  100.00%     80.46%     93.50%     99.49%    100.00%
February 2000........  100.00%     79.41%     93.13%     99.42%    100.00%
March 2000...........  100.00%     78.27%     92.76%     99.35%    100.00%
April 2000...........  100.00%     77.25%     92.29%     99.27%    100.00%
May 2000.............  100.00%     76.53%     91.82%     99.19%    100.00%
June 2000............  100.00%     75.48%     91.45%     99.10%    100.00%
July 2000............  100.00%     74.39%     90.97%     99.01%    100.00%
August 2000..........  100.00%     73.31%     90.60%     98.91%    100.00%
September 2000.......  100.00%     72.25%     90.12%     98.81%    100.00%
October 2000.........  100.00%     71.16%     89.64%     98.70%    100.00%
November 2000........  100.00%     70.10%     89.17%     98.59%    100.00%
December 2000........  100.00%     68.99%     88.69%     98.47%    100.00%
January 2001.........  100.00%     67.90%     88.31%     98.35%    100.00%
February 2001........  100.00%     66.84%     87.83%     98.22%    100.00%
March 2001...........  100.00%     65.63%     87.35%     98.08%    100.00%
April 2001...........  100.00%     64.54%     86.87%     97.94%    100.00%
May 2001.............  100.00%     63.79%     86.38%     97.80%    100.00%
June 2001............  100.00%     62.70%     85.90%     97.65%    100.00%
July 2001............  100.00%     61.61%     85.32%     97.49%    100.00%
August 2001..........  100.00%     60.51%     84.84%     97.33%    100.00%
September 2001.......  100.00%     59.42%     84.35%     97.16%    100.00%
October 2001.........  100.00%     58.27%     83.87%     96.98%    100.00%
November 2001........  100.00%     57.17%     83.29%     96.80%    100.00%
December 2001........  100.00%     56.02%     82.80%     96.62%    100.00%
January 2002.........  100.00%     54.92%     82.22%     96.43%    100.00%
February 2002........  100.00%     53.80%     81.74%     96.23%    100.00%
March 2002...........  100.00%     52.56%     81.16%     96.02%    100.00%
April 2002...........  100.00%     51.41%     80.67%     95.81%    100.00%
May 2002.............  100.00%     50.61%     80.09%     95.60%    100.00%
June 2002............  100.00%     49.49%     79.51%     95.38%    100.00%
July 2002............  100.00%     48.28%     79.02%     95.15%    100.00%
August 2002..........  100.00%     47.15%     78.44%     94.91%    100.00%
September 2002.......  100.00%     46.00%     77.86%     94.67%    100.00%
October 2002.........  100.00%     44.82%     77.28%     94.43%    100.00%
November 2002........  100.00%     43.67%     76.70%     94.17%    100.00%
December 2002........  100.00%     42.46%     76.12%     93.91%    100.00%
January 2003.........  100.00%     41.31%     75.55%     93.65%    100.00%
February 2003........  100.00%     40.13%     74.97%     93.37%    100.00%
</TABLE>
 
<TABLE>
<CAPTION>
    PAYMENT DATE       SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS
    OCCURRING IN         A-1        A-2        B-1        C-1        D-1
    ------------       --------   --------   --------   --------   --------
<S>                    <C>        <C>        <C>        <C>        <C>
March 2003...........  100.00%     38.85%     74.39%     93.09%    100.00%
April 2003...........  100.00%     37.70%     73.73%     92.81%    100.00%
May 2003.............  100.00%     36.85%     73.15%     92.52%    100.00%
June 2003............  100.00%     35.67%     72.57%     92.22%    100.00%
July 2003............  100.00%     34.47%     71.91%     91.91%    100.00%
August 2003..........  100.00%     33.29%     71.34%     91.60%    100.00%
September 2003.......  100.00%     32.14%     70.68%     91.28%    100.00%
October 2003.........  100.00%     30.94%     70.02%     90.96%    100.00%
November 2003........  100.00%     29.74%     69.45%     90.63%    100.00%
December 2003........  100.00%     28.54%     68.79%     90.29%    100.00%
January 2004.........  100.00%     27.37%     68.14%     89.94%    100.00%
February 2004........  100.00%     26.17%     67.48%     89.59%    100.00%
March 2004...........  100.00%     24.90%     66.83%     89.23%    100.00%
April 2004...........  100.00%     23.73%     66.18%     88.86%    100.00%
May 2004.............  100.00%     22.89%     65.53%     88.49%    100.00%
June 2004............  100.00%     21.72%     64.89%     88.11%    100.00%
July 2004............  100.00%     20.50%     64.24%     87.72%    100.00%
August 2004..........  100.00%     19.30%     63.60%     87.33%    100.00%
September 2004.......  100.00%     18.13%     62.88%     86.93%    100.00%
October 2004.........  100.00%     16.89%     62.24%     86.52%    100.00%
November 2004........  100.00%     15.68%     61.60%     86.11%    100.00%
December 2004........  100.00%     14.46%     60.88%     85.69%    100.00%
January 2005.........  100.00%     13.25%     60.25%     85.26%    100.00%
February 2005........  100.00%     12.04%     59.54%     84.82%    100.00%
March 2005...........  100.00%     10.74%     58.83%     84.38%    100.00%
April 2005...........  100.00%      9.51%     58.12%     83.93%    100.00%
May 2005.............  100.00%      8.59%     57.50%     83.47%    100.00%
June 2005............  100.00%      7.36%     56.80%     83.00%    100.00%
July 2005............  100.00%      6.09%     56.10%     82.53%    100.00%
August 2005..........  100.00%      4.85%     55.41%     82.05%    100.00%
September 2005.......  100.00%      3.60%     54.64%     81.56%    100.00%
October 2005.........  100.00%      2.30%     53.95%     81.07%    100.00%
November 2005........  100.00%      1.01%     53.27%     80.57%    100.00%
December 2005........   99.74%      0.00%     52.58%     80.06%    100.00%
January 2006.........   98.65%      0.00%     51.83%     79.54%    100.00%
February 2006........   97.55%      0.00%     51.16%     79.02%    100.00%
March 2006...........   96.39%      0.00%     50.42%     78.49%    100.00%
April 2006...........   95.27%      0.00%     49.70%     77.95%    100.00%
May 2006.............   94.43%      0.00%     49.05%     77.40%    100.00%
June 2006............   93.34%      0.00%     48.33%     76.85%    100.00%
July 2006............   92.21%      0.00%     47.62%     76.28%    100.00%
August 2006..........   91.09%      0.00%     46.91%     75.71%    100.00%
September 2006.......   89.97%      0.00%     46.21%     75.14%    100.00%
October 2006.........   88.82%      0.00%     45.52%     74.55%    100.00%
November 2006........   87.67%      0.00%     44.86%     73.96%    100.00%
December 2006........   86.32%      0.00%     44.19%     73.36%    100.00%
January 2007.........   85.07%      0.00%     43.47%     72.75%     99.72%
February 2007........   83.85%      0.00%     42.82%     72.14%     99.16%
March 2007...........   82.57%      0.00%     42.17%     71.51%     98.59%
April 2007...........   81.36%      0.00%     41.46%     70.88%     98.01%
May 2007.............   80.43%      0.00%     40.75%     70.25%     97.42%
June 2007............   79.20%      0.00%     40.12%     69.60%     96.82%
July 2007............   77.95%      0.00%     39.42%     68.94%     96.21%
August 2007..........   76.72%      0.00%     38.73%     68.28%     95.59%
September 2007.......   75.48%      0.00%     38.04%     67.61%     94.95%
October 2007.........   74.22%      0.00%     37.36%     66.93%     94.30%
</TABLE>
 
                                      A-20
<PAGE>   214
                          POOL FACTORS -- (CONTINUED)
 
<TABLE>
<CAPTION>
    PAYMENT DATE       SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS
    OCCURRING IN         A-1        A-2        B-1        C-1        D-1
    ------------       --------   --------   --------   --------   --------
<S>                    <C>        <C>        <C>        <C>        <C>
November 2007........   72.99%      0.00%     36.69%     66.25%     93.65%
December 2007........   71.74%      0.00%     36.02%     65.55%     92.98%
January 2008.........   70.50%      0.00%     35.35%     64.85%     92.30%
February 2008........   69.27%      0.00%     34.63%     64.14%     91.61%
March 2008...........   67.99%      0.00%     33.98%     63.43%     90.90%
April 2008...........   66.73%      0.00%     33.33%     62.70%     90.19%
May 2008.............   65.77%      0.00%     32.64%     61.97%     89.46%
June 2008............   64.52%      0.00%     31.97%     61.22%     88.72%
July 2008............   63.23%      0.00%     31.36%     60.47%     87.98%
August 2008..........   62.04%      0.00%     30.69%     59.72%     87.21%
September 2008.......   60.85%      0.00%     30.04%     58.95%     86.44%
October 2008.........   59.64%      0.00%     29.38%     58.17%     85.65%
November 2008........   58.44%      0.00%     28.74%     57.39%     84.86%
December 2008........   57.22%      0.00%     28.10%     56.60%     84.05%
January 2009.........   56.01%      0.00%     27.47%     55.80%     83.23%
February 2009........   54.82%      0.00%     26.79%     55.00%     82.39%
March 2009...........   53.56%      0.00%     26.16%     54.18%     81.55%
April 2009...........   52.43%      0.00%     25.50%     53.36%     80.69%
May 2009.............   51.57%      0.00%     24.89%     52.52%     79.82%
June 2009............   50.44%      0.00%     24.24%     51.68%     78.94%
July 2009............   49.30%      0.00%     23.60%     50.84%     78.04%
August 2009..........   48.18%      0.00%     23.01%     49.98%     77.14%
September 2009.......   47.08%      0.00%     22.38%     49.11%     76.22%
October 2009.........   45.97%      0.00%     21.75%     48.24%     75.28%
November 2009........   44.89%      0.00%     21.14%     47.36%     74.34%
December 2009........   43.80%      0.00%     20.53%     46.47%     73.38%
January 2010.........   42.73%      0.00%     19.88%     45.57%     72.41%
February 2010........   41.65%      0.00%     19.29%     44.66%     71.43%
March 2010...........   40.53%      0.00%     18.71%     43.75%     70.43%
April 2010...........   39.52%      0.00%     18.09%     42.82%     69.43%
May 2010.............   38.78%      0.00%     17.47%     41.89%     68.40%
June 2010............   37.76%      0.00%     16.91%     40.95%     67.37%
July 2010............   36.74%      0.00%     16.32%     40.00%     66.32%
August 2010..........   35.72%      0.00%     15.73%     39.04%     65.26%
September 2010.......   34.69%      0.00%     15.15%     38.08%     64.19%
October 2010.........   33.65%      0.00%     14.58%     37.10%     63.10%
November 2010........   32.61%      0.00%     14.02%     36.12%     62.01%
December 2010........   31.56%      0.00%     13.47%     35.12%     60.89%
January 2011.........   30.59%      0.00%     12.93%     34.12%     59.77%
February 2011........   29.67%      0.00%     12.36%     33.11%     58.63%
March 2011...........   28.76%      0.00%     11.84%     32.09%     57.48%
April 2011...........   27.86%      0.00%     11.28%     31.07%     56.31%
May 2011.............   27.14%      0.00%     10.74%     30.03%     55.13%
June 2011............   26.18%      0.00%     10.25%     28.99%     53.94%
July 2011............   25.22%      0.00%      9.73%     27.93%     52.74%
August 2011..........   24.33%      0.00%      9.22%     26.87%     51.52%
September 2011.......   23.47%      0.00%      8.72%     25.80%     50.28%
October 2011.........   22.61%      0.00%      8.23%     24.72%     49.04%
November 2011........   21.78%      0.00%      7.72%     23.63%     47.78%
December 2011........   20.95%      0.00%      7.25%     22.54%     46.50%
January 2012.........   20.14%      0.00%      6.80%     21.43%     45.22%
February 2012........   19.34%      0.00%      6.32%     20.32%     43.91%
March 2012...........   18.54%      0.00%      5.89%     19.19%     42.60%
April 2012...........   17.76%      0.00%      5.44%     18.06%     41.27%
May 2012.............   16.99%      0.00%      5.00%     16.92%     39.93%
June 2012............   16.23%      0.00%      4.57%     15.77%     38.57%
July 2012............   15.49%      0.00%      4.15%     14.61%     37.20%
August 2012..........   14.76%      0.00%      3.75%     13.44%     35.82%
</TABLE>
 
<TABLE>
<CAPTION>
    PAYMENT DATE       SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS
    OCCURRING IN         A-1        A-2        B-1        C-1        D-1
    ------------       --------   --------   --------   --------   --------
<S>                    <C>        <C>        <C>        <C>        <C>
September 2012.......   14.05%      0.00%      3.36%     12.26%     34.42%
October 2012.........   13.34%      0.00%      2.98%     11.08%     33.00%
November 2012........   12.65%      0.00%      2.59%      9.88%     31.58%
December 2012........   11.97%      0.00%      2.24%      8.68%     30.13%
January 2013.........   11.32%      0.00%      1.87%      7.47%     28.68%
February 2013........   10.67%      0.00%      1.55%      6.25%     27.21%
March 2013...........   10.03%      0.00%      1.21%      5.01%     25.73%
April 2013...........    9.42%      0.00%      0.88%      3.77%     24.23%
May 2013.............    8.81%      0.00%      0.57%      2.53%     22.71%
June 2013............    8.23%      0.00%      0.28%      1.27%     21.19%
July 2013............    7.65%      0.00%      0.00%      0.00%     19.64%
August 2013..........    6.76%      0.00%      0.00%      0.00%     18.09%
September 2013.......    5.90%      0.00%      0.00%      0.00%     16.52%
October 2013.........    5.05%      0.00%      0.00%      0.00%     14.93%
November 2013........    4.39%      0.00%      0.00%      0.00%     12.50%
December 2013........    3.74%      0.00%      0.00%      0.00%     10.00%
January 2014.........    3.11%      0.00%      0.00%      0.00%      7.50%
February 2014........    2.40%      0.00%      0.00%      0.00%      5.00%
March 2014...........    1.54%      0.00%      0.00%      0.00%      2.50%
April 2014...........    0.72%      0.00%      0.00%      0.00%      0.00%
May 2014.............    0.00%      0.00%      0.00%      0.00%      0.00%
June 2014............    0.00%      0.00%      0.00%      0.00%      0.00%
July 2014............    0.00%      0.00%      0.00%      0.00%      0.00%
August 2014..........    0.00%      0.00%      0.00%      0.00%      0.00%
September 2014.......    0.00%      0.00%      0.00%      0.00%      0.00%
October 2014.........    0.00%      0.00%      0.00%      0.00%      0.00%
November 2014........    0.00%      0.00%      0.00%      0.00%      0.00%
December 2014........    0.00%      0.00%      0.00%      0.00%      0.00%
January 2015.........    0.00%      0.00%      0.00%      0.00%      0.00%
February 2015........    0.00%      0.00%      0.00%      0.00%      0.00%
March 2015...........    0.00%      0.00%      0.00%      0.00%      0.00%
April 2015...........    0.00%      0.00%      0.00%      0.00%      0.00%
May 2015.............    0.00%      0.00%      0.00%      0.00%      0.00%
June 2015............    0.00%      0.00%      0.00%      0.00%      0.00%
July 2015............    0.00%      0.00%      0.00%      0.00%      0.00%
August 2015..........    0.00%      0.00%      0.00%      0.00%      0.00%
September 2015.......    0.00%      0.00%      0.00%      0.00%      0.00%
October 2015.........    0.00%      0.00%      0.00%      0.00%      0.00%
November 2015........    0.00%      0.00%      0.00%      0.00%      0.00%
December 2015........    0.00%      0.00%      0.00%      0.00%      0.00%
January 2016.........    0.00%      0.00%      0.00%      0.00%      0.00%
February 2016........    0.00%      0.00%      0.00%      0.00%      0.00%
March 2016...........    0.00%      0.00%      0.00%      0.00%      0.00%
April 2016...........    0.00%      0.00%      0.00%      0.00%      0.00%
May 2016.............    0.00%      0.00%      0.00%      0.00%      0.00%
June 2016............    0.00%      0.00%      0.00%      0.00%      0.00%
July 2016............    0.00%      0.00%      0.00%      0.00%      0.00%
August 2016..........    0.00%      0.00%      0.00%      0.00%      0.00%
September 2016.......    0.00%      0.00%      0.00%      0.00%      0.00%
October 2016.........    0.00%      0.00%      0.00%      0.00%      0.00%
November 2016........    0.00%      0.00%      0.00%      0.00%      0.00%
December 2016........    0.00%      0.00%      0.00%      0.00%      0.00%
January 2017.........    0.00%      0.00%      0.00%      0.00%      0.00%
February 2017........    0.00%      0.00%      0.00%      0.00%      0.00%
March 2017...........    0.00%      0.00%      0.00%      0.00%      0.00%
April 2017...........    0.00%      0.00%      0.00%      0.00%      0.00%
May 2017.............    0.00%      0.00%      0.00%      0.00%      0.00%
June 2017............    0.00%      0.00%      0.00%      0.00%      0.00%
</TABLE>
 
                                      A-21
<PAGE>   215
                          POOL FACTORS -- (CONTINUED)
 
<TABLE>
<CAPTION>
    PAYMENT DATE       SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS
    OCCURRING IN         A-1        A-2        B-1        C-1        D-1
    ------------       --------   --------   --------   --------   --------
<S>                    <C>        <C>        <C>        <C>        <C>
July 2017............    0.00%      0.00%      0.00%      0.00%      0.00%
August 2017..........    0.00%      0.00%      0.00%      0.00%      0.00%
September 2017.......    0.00%      0.00%      0.00%      0.00%      0.00%
October 2017.........    0.00%      0.00%      0.00%      0.00%      0.00%
November 2017........    0.00%      0.00%      0.00%      0.00%      0.00%
December 2017........    0.00%      0.00%      0.00%      0.00%      0.00%
January 2018.........    0.00%      0.00%      0.00%      0.00%      0.00%
</TABLE>
 
<TABLE>
<CAPTION>
    PAYMENT DATE       SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS
    OCCURRING IN         A-1        A-2        B-1        C-1        D-1
    ------------       --------   --------   --------   --------   --------
<S>                    <C>        <C>        <C>        <C>        <C>
February 2018........    0.00%      0.00%      0.00%      0.00%      0.00%
March 2018...........    0.00%      0.00%      0.00%      0.00%      0.00%
April 2018...........    0.00%      0.00%      0.00%      0.00%      0.00%
May 2018.............    0.00%      0.00%      0.00%      0.00%      0.00%
June 2018............    0.00%      0.00%      0.00%      0.00%      0.00%
July 2018............    0.00%      0.00%      0.00%      0.00%      0.00%
</TABLE>
 
                                      A-22
<PAGE>   216
 
                                  APPENDIX 10
 
                             EXTENDED POOL FACTORS
 
<TABLE>
<CAPTION>
    PAYMENT DATE       SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS
    OCCURRING IN         A-1        A-2        B-1        C-1        D-1
    ------------       --------   --------   --------   --------   --------
<S>                    <C>        <C>        <C>        <C>        <C>
Closing..............  100.00%    100.43%    100.00%    100.00%    100.00%
August 1998..........  100.00%     99.79%    100.00%    100.00%    100.00%
September 1998.......  100.00%     99.04%    100.00%    100.00%    100.00%
October 1998.........  100.00%     98.30%    100.00%    100.00%    100.00%
November 1998........  100.00%     97.54%    100.00%    100.00%    100.00%
December 1998........  100.00%     96.79%    100.00%    100.00%    100.00%
January 1999.........  100.00%     96.03%    100.00%    100.00%    100.00%
February 1999........  100.00%     95.27%    100.00%    100.00%    100.00%
March 1999...........  100.00%     94.48%    100.00%    100.00%    100.00%
April 1999...........  100.00%     93.71%    100.00%    100.00%    100.00%
May 1999.............  100.00%     92.94%    100.00%    100.00%    100.00%
June 1999............  100.00%     92.17%    100.00%    100.00%    100.00%
July 1999............  100.00%     91.39%    100.00%    100.00%    100.00%
August 1999..........  100.00%     90.58%     99.94%    100.00%    100.00%
September 1999.......  100.00%     89.80%     99.60%    100.00%    100.00%
October 1999.........  100.00%     88.99%     99.25%    100.00%    100.00%
November 1999........  100.00%     88.20%     98.91%    100.00%    100.00%
December 1999........  100.00%     87.38%     98.45%    100.00%    100.00%
January 2000.........  100.00%     86.58%     98.10%    100.00%    100.00%
February 2000........  100.00%     85.75%     97.75%    100.00%    100.00%
March 2000...........  100.00%     84.95%     97.40%    100.00%    100.00%
April 2000...........  100.00%     84.12%     97.05%    100.00%    100.00%
May 2000.............  100.00%     83.28%     96.69%    100.00%    100.00%
June 2000............  100.00%     82.44%     96.34%    100.00%    100.00%
July 2000............  100.00%     81.60%     95.87%    100.00%    100.00%
August 2000..........  100.00%     80.75%     95.52%    100.00%    100.00%
September 2000.......  100.00%     79.90%     95.16%    100.00%    100.00%
October 2000.........  100.00%     79.05%     94.80%     99.99%    100.00%
November 2000........  100.00%     78.20%     94.33%     99.98%    100.00%
December 2000........  100.00%     77.31%     93.97%     99.97%    100.00%
January 2001.........  100.00%     76.45%     93.50%     99.96%    100.00%
February 2001........  100.00%     75.55%     93.13%     99.94%    100.00%
March 2001...........  100.00%     74.69%     92.76%     99.92%    100.00%
April 2001...........  100.00%     73.79%     92.29%     99.89%    100.00%
May 2001.............  100.00%     72.89%     91.82%     99.87%    100.00%
June 2001............  100.00%     71.98%     91.45%     99.83%    100.00%
July 2001............  100.00%     71.07%     90.97%     99.80%    100.00%
August 2001..........  100.00%     70.16%     90.60%     99.76%    100.00%
September 2001.......  100.00%     69.25%     90.12%     99.71%    100.00%
October 2001.........  100.00%     68.34%     89.64%     99.66%    100.00%
November 2001........  100.00%     67.39%     89.17%     99.61%    100.00%
December 2001........  100.00%     66.47%     88.69%     99.55%    100.00%
January 2002.........  100.00%     65.52%     88.31%     99.49%    100.00%
February 2002........  100.00%     64.56%     87.83%     99.42%    100.00%
March 2002...........  100.00%     63.63%     87.35%     99.35%    100.00%
April 2002...........  100.00%     62.67%     86.87%     99.27%    100.00%
May 2002.............  100.00%     61.68%     86.38%     99.19%    100.00%
June 2002............  100.00%     60.72%     85.90%     99.10%    100.00%
July 2002............  100.00%     59.75%     85.32%     99.01%    100.00%
August 2002..........  100.00%     58.76%     84.84%     98.91%    100.00%
September 2002.......  100.00%     57.78%     84.35%     98.81%    100.00%
October 2002.........  100.00%     56.78%     83.87%     98.70%    100.00%
November 2002........  100.00%     55.78%     83.29%     98.59%    100.00%
December 2002........  100.00%     54.77%     82.80%     98.47%    100.00%
January 2003.........  100.00%     53.76%     82.22%     98.35%    100.00%
February 2003........  100.00%     52.75%     81.74%     98.22%    100.00%
</TABLE>
 
<TABLE>
<CAPTION>
    PAYMENT DATE       SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS
    OCCURRING IN         A-1        A-2        B-1        C-1        D-1
    ------------       --------   --------   --------   --------   --------
<S>                    <C>        <C>        <C>        <C>        <C>
March 2003...........  100.00%     51.74%     81.16%     98.08%    100.00%
April 2003...........  100.00%     50.70%     80.67%     97.94%    100.00%
May 2003.............  100.00%     49.65%     80.09%     97.80%    100.00%
June 2003............  100.00%     48.63%     79.51%     97.65%    100.00%
July 2003............  100.00%     47.59%     79.02%     97.49%    100.00%
August 2003..........  100.00%     46.51%     78.44%     97.33%    100.00%
September 2003.......  100.00%     45.46%     77.86%     97.16%    100.00%
October 2003.........  100.00%     44.41%     77.28%     96.98%    100.00%
November 2003........  100.00%     43.33%     76.70%     96.80%    100.00%
December 2003........  100.00%     42.24%     76.12%     96.62%    100.00%
January 2004.........  100.00%     41.18%     75.55%     96.43%    100.00%
February 2004........  100.00%     40.07%     74.97%     96.23%    100.00%
March 2004...........  100.00%     38.99%     74.39%     96.02%    100.00%
April 2004...........  100.00%     37.90%     73.73%     95.81%    100.00%
May 2004.............  100.00%     36.78%     73.15%     95.60%    100.00%
June 2004............  100.00%     35.69%     72.57%     95.38%    100.00%
July 2004............  100.00%     34.57%     71.91%     95.15%    100.00%
August 2004..........  100.00%     33.45%     71.34%     94.91%    100.00%
September 2004.......  100.00%     32.31%     70.68%     94.67%    100.00%
October 2004.........  100.00%     31.18%     70.02%     94.43%    100.00%
November 2004........  100.00%     30.04%     69.45%     94.17%    100.00%
December 2004........  100.00%     28.91%     68.79%     93.91%    100.00%
January 2005.........  100.00%     27.76%     68.14%     93.65%    100.00%
February 2005........  100.00%     26.61%     67.48%     93.37%    100.00%
March 2005...........  100.00%     25.44%     66.83%     93.09%    100.00%
April 2005...........  100.00%     24.29%     66.18%     92.81%    100.00%
May 2005.............  100.00%     23.11%     65.53%     92.52%    100.00%
June 2005............  100.00%     21.93%     64.89%     92.22%    100.00%
July 2005............  100.00%     20.75%     64.24%     91.91%    100.00%
August 2005..........  100.00%     19.58%     63.60%     91.60%    100.00%
September 2005.......  100.00%     18.40%     62.88%     91.28%    100.00%
October 2005.........  100.00%     17.20%     62.24%     90.96%    100.00%
November 2005........  100.00%     15.99%     61.60%     90.63%    100.00%
December 2005........  100.00%     14.79%     60.88%     90.29%    100.00%
January 2006.........  100.00%     13.59%     60.25%     89.94%    100.00%
February 2006........  100.00%     12.36%     59.54%     89.59%    100.00%
March 2006...........  100.00%     11.18%     58.83%     89.23%    100.00%
April 2006...........  100.00%      9.99%     58.12%     88.86%    100.00%
May 2006.............  100.00%      8.81%     57.50%     88.49%    100.00%
June 2006............  100.00%      7.61%     56.80%     88.11%    100.00%
July 2006............  100.00%      6.43%     56.10%     87.72%    100.00%
August 2006..........  100.00%      5.23%     55.41%     87.33%    100.00%
September 2006.......  100.00%      4.03%     54.64%     86.93%    100.00%
October 2006.........  100.00%      2.86%     53.95%     86.52%    100.00%
November 2006........  100.00%      1.74%     53.27%     86.11%    100.00%
December 2006........  100.00%      0.60%     52.58%     85.69%    100.00%
January 2007.........   99.54%      0.00%     51.83%     85.26%    100.00%
February 2007........   98.57%      0.00%     51.16%     84.82%    100.00%
March 2007...........   97.60%      0.00%     50.42%     84.38%    100.00%
April 2007...........   96.63%      0.00%     49.70%     83.93%    100.00%
May 2007.............   95.64%      0.00%     49.05%     83.47%    100.00%
June 2007............   94.66%      0.00%     48.33%     83.00%    100.00%
July 2007............   93.68%      0.00%     47.62%     82.53%    100.00%
August 2007..........   92.68%      0.00%     46.91%     82.05%    100.00%
September 2007.......   91.70%      0.00%     46.21%     81.56%    100.00%
October 2007.........   90.70%      0.00%     45.52%     81.07%    100.00%
</TABLE>
 
                                      A-23
<PAGE>   217
                      EXTENDED POOL FACTORS -- (CONTINUED)
 
<TABLE>
<CAPTION>
    PAYMENT DATE       SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS
    OCCURRING IN         A-1        A-2        B-1        C-1        D-1
    ------------       --------   --------   --------   --------   --------
<S>                    <C>        <C>        <C>        <C>        <C>
November 2007........   89.70%      0.00%     44.86%     80.57%    100.00%
December 2007........   88.70%      0.00%     44.19%     80.06%    100.00%
January 2008.........   87.70%      0.00%     43.47%     79.54%    100.00%
February 2008........   86.70%      0.00%     42.82%     79.02%    100.00%
March 2008...........   85.69%      0.00%     42.17%     78.49%    100.00%
April 2008...........   84.70%      0.00%     41.46%     77.95%    100.00%
May 2008.............   83.72%      0.00%     40.75%     77.40%    100.00%
June 2008............   82.76%      0.00%     40.12%     76.85%    100.00%
July 2008............   81.80%      0.00%     39.42%     76.28%    100.00%
August 2008..........   80.84%      0.00%     38.73%     75.71%    100.00%
September 2008.......   79.87%      0.00%     38.04%     75.14%    100.00%
October 2008.........   78.90%      0.00%     37.36%     74.55%    100.00%
November 2008........   77.93%      0.00%     36.69%     73.96%    100.00%
December 2008........   76.97%      0.00%     36.02%     73.36%    100.00%
January 2009.........   75.99%      0.00%     35.35%     72.75%     99.72%
February 2009........   75.02%      0.00%     34.63%     72.14%     99.16%
March 2009...........   74.04%      0.00%     33.98%     71.51%     98.59%
April 2009...........   73.06%      0.00%     33.33%     70.88%     98.01%
May 2009.............   72.09%      0.00%     32.64%     70.25%     97.42%
June 2009............   71.12%      0.00%     31.97%     69.60%     96.82%
July 2009............   70.14%      0.00%     31.36%     68.94%     96.21%
August 2009..........   69.16%      0.00%     30.69%     68.28%     95.59%
September 2009.......   68.17%      0.00%     30.04%     67.61%     94.95%
October 2009.........   67.19%      0.00%     29.38%     66.93%     94.30%
November 2009........   66.22%      0.00%     28.74%     66.25%     93.65%
December 2009........   65.23%      0.00%     28.10%     65.55%     92.98%
January 2010.........   64.25%      0.00%     27.47%     64.85%     92.30%
February 2010........   63.27%      0.00%     26.79%     64.14%     91.61%
March 2010...........   62.30%      0.00%     26.16%     63.43%     90.90%
April 2010...........   61.31%      0.00%     25.50%     62.70%     90.19%
May 2010.............   60.33%      0.00%     24.89%     61.97%     89.46%
June 2010............   59.35%      0.00%     24.24%     61.22%     88.72%
July 2010............   58.37%      0.00%     23.60%     60.47%     87.98%
August 2010..........   57.39%      0.00%     23.01%     59.72%     87.21%
September 2010.......   56.42%      0.00%     22.38%     58.95%     86.44%
October 2010.........   55.43%      0.00%     21.75%     58.17%     85.65%
November 2010........   54.46%      0.00%     21.14%     57.39%     84.86%
December 2010........   53.48%      0.00%     20.53%     56.60%     84.05%
January 2011.........   52.51%      0.00%     19.88%     55.80%     83.23%
February 2011........   51.54%      0.00%     19.29%     55.00%     82.39%
March 2011...........   50.57%      0.00%     18.71%     54.18%     81.55%
April 2011...........   49.60%      0.00%     18.09%     53.36%     80.69%
May 2011.............   48.63%      0.00%     17.47%     52.52%     79.82%
June 2011............   47.66%      0.00%     16.91%     51.68%     78.94%
July 2011............   46.70%      0.00%     16.32%     50.84%     78.04%
August 2011..........   45.74%      0.00%     15.73%     49.98%     77.14%
September 2011.......   44.78%      0.00%     15.15%     49.11%     76.22%
October 2011.........   43.83%      0.00%     14.58%     48.24%     75.28%
November 2011........   42.88%      0.00%     14.02%     47.36%     74.34%
December 2011........   41.93%      0.00%     13.47%     46.47%     73.38%
January 2012.........   40.98%      0.00%     12.93%     45.57%     72.41%
February 2012........   40.03%      0.00%     12.36%     44.66%     71.43%
March 2012...........   39.09%      0.00%     11.84%     43.75%     70.43%
April 2012...........   38.16%      0.00%     11.28%     42.82%     69.43%
May 2012.............   37.23%      0.00%     10.74%     41.89%     68.40%
June 2012............   36.30%      0.00%     10.25%     40.95%     67.37%
July 2012............   35.37%      0.00%      9.73%     40.00%     66.32%
August 2012..........   34.45%      0.00%      9.22%     39.04%     65.26%
</TABLE>
 
<TABLE>
<CAPTION>
    PAYMENT DATE       SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS
    OCCURRING IN         A-1        A-2        B-1        C-1        D-1
    ------------       --------   --------   --------   --------   --------
<S>                    <C>        <C>        <C>        <C>        <C>
September 2012.......   33.54%      0.00%      8.72%     38.08%     64.19%
October 2012.........   32.63%      0.00%      8.23%     37.10%     63.10%
November 2012........   31.72%      0.00%      7.72%     36.12%     62.01%
December 2012........   30.81%      0.00%      7.25%     35.12%     60.89%
January 2013.........   29.92%      0.00%      6.80%     34.12%     59.77%
February 2013........   29.03%      0.00%      6.32%     33.11%     58.63%
March 2013...........   28.14%      0.00%      5.89%     32.09%     57.48%
April 2013...........   27.26%      0.00%      5.44%     31.07%     56.31%
May 2013.............   26.39%      0.00%      5.00%     30.03%     55.13%
June 2013............   25.52%      0.00%      4.57%     28.99%     53.94%
July 2013............   24.66%      0.00%      4.15%     27.93%     52.74%
August 2013..........   23.80%      0.00%      3.75%     26.87%     51.52%
September 2013.......   22.95%      0.00%      3.36%     25.80%     50.28%
October 2013.........   22.12%      0.00%      2.98%     24.72%     49.04%
November 2013........   21.31%      0.00%      2.59%     23.63%     47.78%
December 2013........   20.51%      0.00%      2.24%     22.54%     46.50%
January 2014.........   19.71%      0.00%      1.87%     21.43%     45.22%
February 2014........   18.95%      0.00%      1.55%     20.32%     43.91%
March 2014...........   18.18%      0.00%      1.21%     19.19%     42.60%
April 2014...........   17.44%      0.00%      0.88%     18.06%     41.27%
May 2014.............   16.71%      0.00%      0.57%     16.92%     39.93%
June 2014............   15.99%      0.00%      0.28%     15.77%     38.57%
July 2014............   15.27%      0.00%      0.00%     14.61%     37.20%
August 2014..........   14.57%      0.00%      0.00%     13.44%     35.82%
September 2014.......   13.89%      0.00%      0.00%     12.26%     34.42%
October 2014.........   13.23%      0.00%      0.00%     11.08%     33.00%
November 2014........   12.58%      0.00%      0.00%      9.88%     31.58%
December 2014........   11.95%      0.00%      0.00%      8.68%     30.13%
January 2015.........   11.32%      0.00%      0.00%      7.47%     28.68%
February 2015........   10.72%      0.00%      0.00%      6.25%     27.21%
March 2015...........   10.14%      0.00%      0.00%      5.01%     25.73%
April 2015...........    9.58%      0.00%      0.00%      3.77%     24.23%
May 2015.............    9.04%      0.00%      0.00%      2.53%     22.71%
June 2015............    8.51%      0.00%      0.00%      1.27%     21.19%
July 2015............    8.00%      0.00%      0.00%      0.00%     19.64%
August 2015..........    7.49%      0.00%      0.00%      0.00%     18.09%
September 2015.......    6.99%      0.00%      0.00%      0.00%     16.52%
October 2015.........    6.50%      0.00%      0.00%      0.00%     14.93%
November 2015........    6.02%      0.00%      0.00%      0.00%     12.50%
December 2015........    5.54%      0.00%      0.00%      0.00%     10.00%
January 2016.........    5.08%      0.00%      0.00%      0.00%      7.50%
February 2016........    4.64%      0.00%      0.00%      0.00%      5.00%
March 2016...........    4.27%      0.00%      0.00%      0.00%      2.50%
April 2016...........    3.94%      0.00%      0.00%      0.00%      0.00%
May 2016.............    3.63%      0.00%      0.00%      0.00%      0.00%
June 2016............    3.33%      0.00%      0.00%      0.00%      0.00%
July 2016............    3.03%      0.00%      0.00%      0.00%      0.00%
August 2016..........    2.75%      0.00%      0.00%      0.00%      0.00%
September 2016.......    2.48%      0.00%      0.00%      0.00%      0.00%
October 2016.........    2.23%      0.00%      0.00%      0.00%      0.00%
November 2016........    1.99%      0.00%      0.00%      0.00%      0.00%
December 2016........    1.76%      0.00%      0.00%      0.00%      0.00%
January 2017.........    1.54%      0.00%      0.00%      0.00%      0.00%
February 2017........    1.32%      0.00%      0.00%      0.00%      0.00%
March 2017...........    1.12%      0.00%      0.00%      0.00%      0.00%
April 2017...........    0.93%      0.00%      0.00%      0.00%      0.00%
May 2017.............    0.76%      0.00%      0.00%      0.00%      0.00%
June 2017............    0.60%      0.00%      0.00%      0.00%      0.00%
</TABLE>
 
                                      A-24
<PAGE>   218
                      EXTENDED POOL FACTORS -- (CONTINUED)
 
<TABLE>
<CAPTION>
    PAYMENT DATE       SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS
    OCCURRING IN         A-1        A-2        B-1        C-1        D-1
    ------------       --------   --------   --------   --------   --------
<S>                    <C>        <C>        <C>        <C>        <C>
July 2017............    0.48%      0.00%      0.00%      0.00%      0.00%
August 2017..........    0.39%      0.00%      0.00%      0.00%      0.00%
September 2017.......    0.33%      0.00%      0.00%      0.00%      0.00%
October 2017.........    0.27%      0.00%      0.00%      0.00%      0.00%
November 2017........    0.22%      0.00%      0.00%      0.00%      0.00%
December 2017........    0.17%      0.00%      0.00%      0.00%      0.00%
January 2018.........    0.13%      0.00%      0.00%      0.00%      0.00%
February 2018........    0.10%      0.00%      0.00%      0.00%      0.00%
March 2018...........    0.09%      0.00%      0.00%      0.00%      0.00%
April 2018...........    0.07%      0.00%      0.00%      0.00%      0.00%
May 2018.............    0.06%      0.00%      0.00%      0.00%      0.00%
June 2018............    0.05%      0.00%      0.00%      0.00%      0.00%
July 2018............    0.04%      0.00%      0.00%      0.00%      0.00%
August 2018..........    0.03%      0.00%      0.00%      0.00%      0.00%
September 2018.......    0.02%      0.00%      0.00%      0.00%      0.00%
October 2018.........    0.01%      0.00%      0.00%      0.00%      0.00%
November 2018........    0.01%      0.00%      0.00%      0.00%      0.00%
December 2018........    0.00%      0.00%      0.00%      0.00%      0.00%
January 2019.........    0.00%      0.00%      0.00%      0.00%      0.00%
February 2019........    0.00%      0.00%      0.00%      0.00%      0.00%
March 2019...........    0.00%      0.00%      0.00%      0.00%      0.00%
April 2019...........    0.00%      0.00%      0.00%      0.00%      0.00%
May 2019.............    0.00%      0.00%      0.00%      0.00%      0.00%
June 2019............    0.00%      0.00%      0.00%      0.00%      0.00%
July 2019............    0.00%      0.00%      0.00%      0.00%      0.00%
August 2019..........    0.00%      0.00%      0.00%      0.00%      0.00%
September 2019.......    0.00%      0.00%      0.00%      0.00%      0.00%
October 2019.........    0.00%      0.00%      0.00%      0.00%      0.00%
November 2019........    0.00%      0.00%      0.00%      0.00%      0.00%
December 2019........    0.00%      0.00%      0.00%      0.00%      0.00%
January 2020.........    0.00%      0.00%      0.00%      0.00%      0.00%
February 2020........    0.00%      0.00%      0.00%      0.00%      0.00%
March 2020...........    0.00%      0.00%      0.00%      0.00%      0.00%
April 2020...........    0.00%      0.00%      0.00%      0.00%      0.00%
May 2020.............    0.00%      0.00%      0.00%      0.00%      0.00%
June 2020............    0.00%      0.00%      0.00%      0.00%      0.00%
July 2020............    0.00%      0.00%      0.00%      0.00%      0.00%
</TABLE>
 
<TABLE>
<CAPTION>
    PAYMENT DATE       SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS   SUBCLASS
    OCCURRING IN         A-1        A-2        B-1        C-1        D-1
    ------------       --------   --------   --------   --------   --------
<S>                    <C>        <C>        <C>        <C>        <C>
August 2020..........    0.00%      0.00%      0.00%      0.00%      0.00%
September 2020.......    0.00%      0.00%      0.00%      0.00%      0.00%
October 2020.........    0.00%      0.00%      0.00%      0.00%      0.00%
November 2020........    0.00%      0.00%      0.00%      0.00%      0.00%
December 2020........    0.00%      0.00%      0.00%      0.00%      0.00%
January 2021.........    0.00%      0.00%      0.00%      0.00%      0.00%
February 2021........    0.00%      0.00%      0.00%      0.00%      0.00%
March 2021...........    0.00%      0.00%      0.00%      0.00%      0.00%
April 2021...........    0.00%      0.00%      0.00%      0.00%      0.00%
May 2021.............    0.00%      0.00%      0.00%      0.00%      0.00%
June 2021............    0.00%      0.00%      0.00%      0.00%      0.00%
July 2021............    0.00%      0.00%      0.00%      0.00%      0.00%
August 2021..........    0.00%      0.00%      0.00%      0.00%      0.00%
September 2021.......    0.00%      0.00%      0.00%      0.00%      0.00%
October 2021.........    0.00%      0.00%      0.00%      0.00%      0.00%
November 2021........    0.00%      0.00%      0.00%      0.00%      0.00%
December 2021........    0.00%      0.00%      0.00%      0.00%      0.00%
January 2022.........    0.00%      0.00%      0.00%      0.00%      0.00%
February 2022........    0.00%      0.00%      0.00%      0.00%      0.00%
March 2022...........    0.00%      0.00%      0.00%      0.00%      0.00%
April 2022...........    0.00%      0.00%      0.00%      0.00%      0.00%
May 2022.............    0.00%      0.00%      0.00%      0.00%      0.00%
June 2022............    0.00%      0.00%      0.00%      0.00%      0.00%
July 2022............    0.00%      0.00%      0.00%      0.00%      0.00%
August 2022..........    0.00%      0.00%      0.00%      0.00%      0.00%
September 2022.......    0.00%      0.00%      0.00%      0.00%      0.00%
October 2022.........    0.00%      0.00%      0.00%      0.00%      0.00%
November 2022........    0.00%      0.00%      0.00%      0.00%      0.00%
December 2022........    0.00%      0.00%      0.00%      0.00%      0.00%
January 2023.........    0.00%      0.00%      0.00%      0.00%      0.00%
February 2023........    0.00%      0.00%      0.00%      0.00%      0.00%
March 2023...........    0.00%      0.00%      0.00%      0.00%      0.00%
April 2023...........    0.00%      0.00%      0.00%      0.00%      0.00%
May 2023.............    0.00%      0.00%      0.00%      0.00%      0.00%
June 2023............    0.00%      0.00%      0.00%      0.00%      0.00%
July 2023............    0.00%      0.00%      0.00%      0.00%      0.00%
</TABLE>
 
                                      A-25
<PAGE>   219
 
                                 AERCO LIMITED
 
   
                            c/o AerFi Administrative
    
                                Services Limited
   
                                 Aviation House
    
                                    Shannon
                                    Ireland
 
                                      and
                              22 Grenville Street
                                   St. Helier
                                 Jersey JE4 8PX
                                Channel Islands
 
   
<TABLE>
<S>                                                <C>
              BOOK-ENTRY DEPOSITARY,
            TRUSTEE, SECURITY TRUSTEE,                                PAYING AGENT
    CASH MANAGER REFERENCE AND EXCHANGE AGENT                        AND REGISTRAR
              BANKERS TRUST COMPANY                              BANKERS TRUST COMPANY
                Four Albany Street                                 Four Albany Street
                  Mail Stop 5091                                     Mail Stop 5091
             New York, New York 10006                           New York, New York 10006
                       USA                                                USA
               ADMINISTRATIVE AGENT                                     SERVICER
               AERFI ADMINISTRATIVE                             BABCOCK & BROWN LIMITED
                 SERVICES LIMITED                                     Oracle House
                  Aviation House                                     Herbert Street
                     Shannon                                            Dublin 2
                     Ireland                                            Ireland
</TABLE>
    
 
                            LUXEMBOURG PAYING AGENT
                                AND CO-REGISTRAR
                    BANQUE INTERNATIONALE A LUXEMBOURG S.A.
                                69, route d'Esch
                               L-1470 Luxembourg
 
                                 LEGAL ADVISORS
 
<TABLE>
<S>                                                <C>
               To AerCo Group as to                               To AerCo Group as to
                United States law                                      Jersey law
              DAVIS POLK & WARDWELL                              MOURANT DU FEU & JEUNE
               1 Frederick's Place                                22 Grenville Street
                 London EC2R 8AB                                       St. Helier
                     England                                         Jersey JE4 8PX
                                                                    Channel Islands
               To AerCo Group as to
                    Irish law
                MCCANN FITZGERALD
              2 Harbourmaster Place
                Custom House Dock
                     Dublin 1
                     Ireland
</TABLE>
 
                                 LISTING AGENT
 
                    BANQUE INTERNATIONALE A LUXEMBOURG S.A.
                                69, route d'Esch
                               L-1470 Luxembourg
<PAGE>   220
 
                        (LOGO) Printed in London X39423
<PAGE>   221
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 20.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
     Except as hereinafter set forth, there is no provision of AerCo Limited's
Memorandum and Articles of Association, or of any contract, arrangement or
statute under which any director, trustee or officer of AerCo Limited is insured
or indemnified in any manner against any liability that he may incur in his
capacity as such.
 
   
     AerCo Limited's Articles of Association provide that AerCo Limited shall
indemnify every present and former director of AerCo Limited against any loss or
liability incurred by reason of being or having been a director of AerCo Limited
to the fullest extent permitted by Jersey law. Article 77 of the Companies
(Jersey) Law 1991 ("Article 77") permits a Jersey company to indemnify each
director of that company against, among others, any liabilities incurred in
defending any proceedings (whether civil or criminal) (i) in which judgment is
given in his favor or he is acquitted, or (ii) which are discontinued otherwise
than for some benefit conferred by him (or on his behalf) or for some detriment
suffered by him, or (iii) which are settled on terms which include such benefit
or detriment and, in the opinion of a majority of the directors of the company
(excluding any director who conferred such benefit or on whose behalf such
benefit was conferred or who suffered such detriment), the director was
substantially successful on the merits in his resistance to the proceedings.
    
 
     AerCo Limited may purchase and maintain, in the name of and at the expense
of AerCo Limited, insurance for the benefit of any person who is or was a
director or officer of AerCo Limited or is or was serving at the request of
AerCo Limited as a director or officer in another corporation, partnership,
joint venture, trust or other enterprise against any liability incurred by him
or her in any such capacity, or arising out of such person's status as such,
whether or not AerCo Limited would have the power to indemnify him or her
against such liability under Article 77.
 
ITEM 21.  EXHIBITS
 
(a) Exhibits
 
     The following is a list of exhibits to this Registration Statement:
 
   
<TABLE>
    <C>   <S>
     3.1  Memorandum and Articles of Association of AerCo
     4.1  Indenture dated as of July 15, 1998 by and among AerCo and
          Bankers Trust Company, as Trustee with respect to the Notes*
     4.2  Form of Global Note (included in Exhibit 4.1)*
     4.3  Registration Rights Agreement dated July 15, 1998 by and
          between AerCo and Morgan Stanley & Co. International
          Limited*
     5.1  Opinion of Davis Polk & Wardwell as to the legality of the
          securities being registered hereby
     5.2  Opinion of Mourant du Feu & Jeune as to the legality of the
          securities being registered hereby
     8.1  Opinion of Davis Polk & Wardwell as to certain U.S. Federal
          income tax matters (included in Exhibit 5.1)
     8.2  Opinion of KPMG as to certain Irish tax matters
     8.3  Opinion of McCann FitzGerald as to certain Irish tax matters
     8.4  Opinion of Mourant du Feu & Jeune as to certain Jersey tax
          matters
     9.1  Trust Instrument constituting AerCo Holding Trust*
     9.2  Shareholders Undertaking between Mourant & Co. Trustees
          Limited as trustee of AerCo Holding Trust the Nominees, GPA
          Group, AerCo and the Trustee*
</TABLE>
    
 
                                      II-1
<PAGE>   222
 
   
<TABLE>
<C>        <S>
     10.1  Administrative Agency Agreement dated as of July 15, 1998 among AerCo, AerFi Administrative Services
           Limited, as Administrative Agent, Bankers Trust Company, as Security Trustee GPA Group, as Guarantor
           and each subsidiary of AerCo*
     10.2  Cash Management Agreement dated as of July 15, 1998 among AerCo, Bankers Trust Company, as Security
           Trustee, GPA Cash Manager II Limited, as Cash Manager GPA, as Guarantor and each subsidiary of AerCo*
     10.3  Security Trust Agreement dated as of July 15, 1998 among AerCo, Bankers Trust Company, as Security
           Trustee and as Trustee, GPA Cash Manager II Limited, as Cash Manager, AerFi Administrative Services
           Limited, as Administrative Agent, Lively Limited, GPA Group, Babcock & Brown Limited, Mourant & Co.
           Secretaries Limited and each subsidiary of AerCo*
     10.4  Reference Agency Agreement dated as of July 15, 1998 among AerCo, Bankers Trust Company, as reference
           agent and as Trustee and GPA Administrative Services Limited, as Administrative Agent*
     10.5  Servicing Agreement dated as of July 15, 1998 among AerCo, Babcock & Brown Limited as Administrative
           Agent and each subsidiary of AerCo*
     10.6  Share Purchase Agreement dated July 15, 1998 between AerCo, GPA Group and Skyscape Limited*
     10.7  Deposit Agreement dated as of July 15, 1998 between AerCo and Bankers Trust Company, as book-entry
           depositary*
     21.1  Subsidiaries of AerCo*
     23.1  Consent of Davis Polk & Wardwell (included in Exhibit 5.1)
     23.2  Consent of Aircraft Information Services, Inc.
     23.3  Consent of BK Associates, Inc.
     23.4  Consent of Airclaims Limited
     23.5  Consent of Arthur Andersen, Chartered Accountants
     23.6  Consent of KPMG (included in Exhibit 8.2)
     23.7  Consent of McCann FitzGerald (included in Exhibit 8.3)
     23.8  Consent of Mourant du Feu & Jeune (included in Exhibit 8.4)
     23.9  Consent of KPMG, Chartered Accountants
     24.1  Directors' Power of Attorney (included in signature pages)*
     25.1  Statement of Eligibility of Bankers Trust Company, as Trustee, under the Indenture to be qualified
           under the Trust Indenture Act of 1939*
     99.1  Form of Letter of Transmittal*
     99.2  Form of Notice of Guaranteed Delivery*
     99.3  Form of Letters to DTC Participants*
     99.4  Form of Letter to Clients and Form of Instruction to Book-Entry Transfer Participant*
     99.5  Appraisal of Aircraft Information Services, Inc. relating to the Aircraft*
     99.6  Appraisal of BK Associates, Inc. relating to the Aircraft*
     99.7  Appraisal of Airclaims Limited relating to the Aircraft*
     99.8  Appraisal of Aircraft Information Services, Inc. relating to the Aircraft dated January 18, 1999
     99.9  Appraisal of BK Associates, Inc. relating to the Aircraft dated January 18, 1999
    99.10  Appraisal of Airclaims Limited relating to the Aircraft dated January 18, 1999
</TABLE>
    
 
   
*  Previously filed.
    
 
                                      II-2
<PAGE>   223
 
   
ITEM 22.  UNDERTAKINGS.
    
 
   
     (a) The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
registrant's annual report pursuant to Section 13(a) or 15(d) of the Securities
Exchange Act of 1934 (and, where applicable, each filing of an employee benefit
plan's annual report pursuant to Section 15(d) of the Securities Exchange Act of
1934) that is incorporated by reference in the registration statement shall be
deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.
    
 
   
     (b) The undersigned registrant hereby undertakes to supply by means of a
post-effective amendment all information concerning a transaction and the
company being acquired involved therein, that was not the subject of and
included in the registration statement when it became effective.
    
 
   
     (c) The undersigned registrant hereby undertakes as follows:
    
 
   
        (1)  That prior to any public reoffering of the securities registered
             hereunder through use of a prospectus which is a part of this
             registration statement, by any person or party who is deemed to be
             an underwriter within the meaning of Rule 145(c), the issuer
             undertakes that such reoffering prospectus will contain the
             information called for by the applicable registration form with
             respect to reofferings by persons who may be deemed underwriters,
             in addition to the information called for by the other Items of the
             applicable form.
    
 
   
        (2)  That every prospectus (i) that is filed pursuant to paragraph (1)
             immediately preceding, or (ii) that purports to meet the
             requirements of section 10(a)(3) of the Act and is used in
             connection with an offering of securities subject to Rule 415, will
             be filed as a part of an amendment to the registration statement
             and will not be used until such amendment is effective, and that,
             for purposes of determining any liability under the Securities Act
             of 1933, each such post-effective amendment shall be deemed to be a
             new registration statement relating to the securities offered
             therein, and the offering of such securities at that time shall be
             deemed to be the initial bona fide offerings thereof.
    
 
   
     (d) Insofar as indemnification for liabilities arising under the Securities
Act of 1933 may be permitted to directors, officers and controlling persons of
the registrant pursuant to the foregoing provisions, or otherwise, the
registrant has been advised that in the opinion of the Securities and Exchange
Commission such indemnification is against public policy as expressed in the Act
and is, therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other that the payment by the registrant of expenses
incurred or paid by a director, officer of controlling person of the registrant
in the successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question of whether such indemnification by it is against
public policy as expressed in the Act and will be governed by the final
adjudication of such issue.
    
 
                                      II-3
<PAGE>   224
 
                                   SIGNATURES
 
   
     Pursuant to the requirements of the Securities Act, the Registrant, AerCo
Limited, has duly caused this Registration Statement to be signed on its behalf
by the undersigned, thereunto duly authorized, in Shannon, Ireland, on January
26, 1999.
    
 
                                          AERCO LIMITED
 
                                          By: /s/ FREDERICK W. BRADLEY, JR.
                                            ------------------------------------
                                            Independent Director
 
                               POWER OF ATTORNEY
 
     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints Frederick W. Bradley, Jr., Kenneth N. Peters, G.
Adrian Robinson, Edward Hansom and Rose Hynes his/her true and lawful
attorneys-in-fact and agent, each acting alone, with full powers of substitution
and resubstitution, for him/her and in his/her name, place and stead, in any and
all capacities, to sign any and all amendments to this Registration Statement,
including post-effective amendments, as well as any related registration
statement (or amendment thereto) and to file the same, with all exhibits
thereto, and other documents in connection therewith, with the Securities and
Exchange Commission, granting unto said attorney-in-fact and agent, full power
and authority to do and perform each and every act and thing requisite and
necessary to be done in and about the premises, as fully to all intents and
purposes as he might or could do in person, and hereby ratifies and confirms all
his/her said attorneys-in-fact and agents or any of them or his/her substitute
or substitutes may lawfully do or cause to be done by virtue thereof.
 
     The Power of Attorney may be executed in multiple counterparts, each of
which shall be deemed an original, but which taken together shall constitute one
instrument.
 
     Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the following
capacities on the dates indicated.
 
   
<TABLE>
<CAPTION>
                      SIGNATURE                          TITLE                                 DATE
                      ---------                          -----                                 ----
<C>                                                      <S>                             <C>
 
            /s/ FREDERICK W. BRADLEY, JR.                Independent Director             January 26, 1999
- -----------------------------------------------------    (principal executive
              Frederick W. Bradley, Jr.                  officer)
 
                /s/ KENNETH N. PETERS                    Independent Director             January 26, 1999
- -----------------------------------------------------    (principal accounting
                  Kenneth N. Peters                      officer)
 
               /s/ G. ADRIAN ROBINSON                    Independent Director             January 26, 1999
- -----------------------------------------------------    (principal financial
                 G. Adrian Robinson                      officer)
 
                  /s/ EDWARD HANSOM                      Director                         January 26, 1999
- -----------------------------------------------------
                    Edward Hansom
 
                   /s/ ROSE HYNES                        Director                         January 26, 1999
- -----------------------------------------------------
                     Rose Hynes
 
Authorized Representative in the United States
 
            /s/ FREDERICK W. BRADLEY, JR.
- -----------------------------------------------------
           Name: Frederick W. Bradley, Jr.
</TABLE>
    
 
                                      II-4
<PAGE>   225
 
   
                    INDEPENDENT AUDITORS' REPORT ON SCHEDULE
    
 
   
TO THE BOARD OF DIRECTORS
    
   
OF AERCO LIMITED ("AERCO")
    
 
   
     We have audited in accordance with generally accepted auditing standards,
the consolidated financial statements of Aircraft Lease Portfolio Securitization
94-1 Limited (ALPS 94-1) and the financial statements appearing under the
heading "AerFi Transferred Aircraft" for the year ended June 30, 1998 included
in this registration statement and have issued our reports thereon dated
November 23, 1998. Our audit was made for the purpose of forming an opinion on
the basic financial statements taken as a whole.
    
 
   
     The schedule included within the registration statement on S-2 is the
responsibility of AerCo's management and is presented for the purposes of
complying with the Securities and Exchange Commission's rules and are not part
of the basic financial statements. This schedule has been subjected to the
auditing procedures applied in the audit of the basic financial statements and,
in our opinion, fairly states in all material respects the financial data
required to be set forth therein in relation to the basic financial statements
taken as a whole.
    
 
   
KPMG
    
   
Chartered Accountants
    
   
5 George's Dock
    
   
IFSC
    
   
Dublin 1
    
   
Ireland
    
 
   
/s/  KPMG
    
 
   
January 26, 1999
    
 
                                       S-1
<PAGE>   226
 
                    INDEPENDENT AUDITORS' REPORT ON SCHEDULE
 
TO THE BOARD OF DIRECTORS
   
OF AERCO LIMITED (THE "AERCO")
    
 
   
     We have audited in accordance with generally accepted auditing standards,
the consolidated financial statements of Aircraft Lease Portfolio Securitization
94-1 Limited (ALPS 94-1) and the financial statements appearing under the
heading "AerFi Transferred Aircraft" for the years ended June 30, 1996 and June
30, 1997 included in this registration statement and have issued our reports
thereon dated December 2, 1997. Our audit was made for the purpose of forming an
opinion on the basic financial statements taken as a whole.
    
 
   
     The schedule included within the registration statement on S-2 is the
responsibility of the AerCo's management and is presented for the purposes of
complying with the Securities and Exchange Commission's rules and are not part
of the basic financial statements. This schedule has been subjected to the
auditing procedures applied in the audit of the basic financial statements and,
in our opinion, fairly states in all material respects the financial data
required to be set forth therein in relation to the basic financial statements
taken as a whole.
    
 
ARTHUR ANDERSEN
Chartered Accountants
St Helier, Jersey
 
/s/  ARTHUR ANDERSEN
 
   
January 26, 1999
    
 
                                       S-2
<PAGE>   227
 
   
                  ALPS 94-1 LIMITED/AERFI TRANSFERRED AIRCRAFT
    
 
                       VALUATION AND QUALIFYING ACCOUNTS
 
                              ACCOUNTS RECEIVABLE
 
                                  SCHEDULE II
 
ALPS 94-1 LIMITED
 
   
<TABLE>
<CAPTION>
                                       BALANCE AT      CHARGED/(RELEASED)     DEDUCTIONS       BALANCE AT
                                       BEGINNING          TO COSTS AND       (WRITE-OFFS/         END
                                     OF YEAR/PERIOD         EXPENSES          TRANSFERS)     OF YEAR/PERIOD
                                     --------------    ------------------    ------------    --------------
                                                                    ($'000)
<S>                                  <C>               <C>                   <C>             <C>
Year ended June 30,
     1996........................           0                   0                  0                0
     1997........................           0                   0                  0                0
     1998........................           0                   0                  0                0
</TABLE>
    
 
   
AERFI TRANSFERRED AIRCRAFT
    
 
   
<TABLE>
<CAPTION>
                                       BALANCE AT      CHARGED/(RELEASED)     DEDUCTIONS       BALANCE AT
                                       BEGINNING          TO COSTS AND       (WRITE-OFFS/         END
                                     OF YEAR/PERIOD         EXPENSES          TRANSFERS)     OF YEAR/PERIOD
                                     --------------    ------------------    ------------    --------------
                                                                    ($'000)
<S>                                  <C>               <C>                   <C>             <C>
Year ended June 30,
     1998........................         212                 413                  0              625
</TABLE>
    
 
                                       S-3
<PAGE>   228
 
   
                               INDEX TO EXHIBITS
    
 
   
<TABLE>
    <C>   <S>
     3.1  Memorandum and Articles of Association of AerCo
     4.1  Indenture dated as of July 15, 1998 by and among AerCo and
          Bankers Trust Company, as Trustee with respect to the Notes*
     4.2  Form of Global Note (included in Exhibit 4.1)*
     4.3  Registration Rights Agreement dated July 15, 1998 by and
          between AerCo and Morgan Stanley & Co. International
          Limited*
     5.1  Opinion of Davis Polk & Wardwell as to the legality of the
          securities being registered hereby
     5.2  Opinion of Mourant du Feu & Jeune as to the legality of the
          securities being registered hereby
     8.1  Opinion of Davis Polk & Wardwell as to certain U.S. Federal
          income tax matters (included in Exhibit 5.1)
     8.2  Opinion of KPMG as to certain Irish tax matters
     8.3  Opinion of McCann FitzGerald as to certain Irish tax matters
     8.4  Opinion of Mourant du Feu & Jeune as to certain Jersey tax
          matters
     9.1  Trust Instrument constituting AerCo Holding Trust*
     9.2  Shareholders Undertaking between Mourant & Co. Trustees
          Limited as trustee of AerCo Holding Trust the Nominees, GPA
          Group, AerCo and the Trustee*
    10.1  Administrative Agency Agreement dated as of July 15, 1998
          among AerCo, AerFi Administrative Services Limited, as
          Administrative Agent, Bankers Trust Company, as Security
          Trustee GPA Group, as Guarantor and each subsidiary of
          AerCo*
    10.2  Cash Management Agreement dated as of July 15, 1998 among
          AerCo, Bankers Trust Company, as Security Trustee, GPA Cash
          Manager II Limited, as Cash Manager GPA, as Guarantor and
          each subsidiary of AerCo*
    10.3  Security Trust Agreement dated as of July 15, 1998 among
          AerCo, Bankers Trust Company, as Security Trustee and as
          Trustee, GPA Cash Manager II Limited, as Cash Manager, AerFi
          Administrative Services Limited, as Administrative Agent,
          Lively Limited, GPA Group, Babcock & Brown Limited, Mourant
          & Co. Secretaries Limited and each subsidiary of AerCo*
    10.4  Reference Agency Agreement dated as of July 15, 1998 among
          AerCo, Bankers Trust Company, as reference agent and as
          Trustee and GPA Administrative Services Limited, as
          Administrative Agent*
    10.5  Servicing Agreement dated as of July 15, 1998 among AerCo,
          Babcock & Brown Limited as Administrative Agent and each
          subsidiary of AerCo*
    10.6  Share Purchase Agreement dated July 15, 1998 between AerCo,
          GPA Group and Skyscape Limited*
    10.7  Deposit Agreement dated as of July 15, 1998 between AerCo
          and Bankers Trust Company, as book-entry depositary*
    21.1  Subsidiaries of AerCo*
    23.1  Consent of Davis Polk & Wardwell (included in Exhibit 5.1)
    23.2  Consent of Aircraft Information Services, Inc.
    23.3  Consent of BK Associates, Inc.
    23.4  Consent of Airclaims Limited
    23.5  Consent of Arthur Andersen, Chartered Accountants*
    23.6  Consent of KPMG (included in Exhibit 8.2)
    23.7  Consent of McCann FitzGerald (included in Exhibit 8.3)
    23.8  Consent of Mourant du Feu & Jeune (included in Exhibit 8.4)
</TABLE>
    
<PAGE>   229
 
   
<TABLE>
<C>        <S>
     23.9  Consent of KPMG, Chartered Accountants
     24.1  Directors' Power of Attorney (included in signature pages)*
     25.1  Statement of Eligibility of Bankers Trust Company, as Trustee, under the Indenture to be qualified
           under the Trust Indenture Act of 1939*
     99.1  Form of Letter of Transmittal*
     99.2  Form of Notice of Guaranteed Delivery*
     99.3  Form of Letters to DTC Participants*
     99.4  Form of Letter to Clients and Form of Instruction to Book-Entry Transfer Participant*
     99.5  Appraisal of Aircraft Information Services, Inc. relating to the Aircraft*
     99.6  Appraisal of BK Associates, Inc. relating to the Aircraft*
     99.7  Appraisal of Airclaims Limited relating to the Aircraft*
     99.8  Appraisal of Aircraft Information Services, Inc. relating to the Aircraft dated January 18, 1999
     99.9  Appraisal of BK Associates, Inc. relating to the Aircraft dated January 18, 1999
    99.10  Appraisal of Airclaims Limited relating to the Aircraft dated January 18, 1999
</TABLE>
    
 
   
*  Previously filed.
    

<PAGE>   1
                                                                     EXHIBIT 3.1


                           COMPANIES (JERSEY) LAW 1991







                                   MEMORANDUM

                                       AND

                             ARTICLES OF ASSOCIATION

                                       OF




                                  AERCO LIMITED

                            REGISTERED: 4TH JUNE 1998




                             MOURANT DU FEU & JEUNE
                    ADVOCATES, SOLICITORS AND NOTARIES PUBLIC
                  P.O. Box 87, 22 Grenville Street. St. Helier,
                        Jersey JE4 8PX, Channel Islands.
                     Tel: (01534) 60900 Fax: (01534) 609333


<PAGE>   2





                           COMPANIES (JERSEY) LAW 1991







                                   MEMORANDUM

                                       AND

                             ARTICLES OF ASSOCIATION

                                       OF




                                  AERCO LIMITED

                            REGISTERED: 4TH JUNE 1998


                   REPRINTED WITH AMENDMENTS TO 14TH JULY 1998


                             MOURANT DU FEU & JEUNE
                    ADVOCATES, SOLICITORS AND NOTARIES PUBLIC
                  P.O. Box 87, 22 Grenville Street. St. Helier,
                        Jersey JE4 8PX, Channel Islands.


<PAGE>   3




                           COMPANIES (JERSEY) LAW 1991

                            MEMORANDUM OF ASSOCIATION

                 (Reprinted with amendments to 14th July 1998)
                                       of

                                  AerCo Limited

1.       The name of the Company is AerCo Limited.

2.       The share capital of the Company is US$10,000 divided into 10,000
         shares of US$l each.

3.       The liability of the members is limited.

4.       The Company is established for the following purposes only:-

         (a)      To purchase or otherwise acquire directly or indirectly
                  commercial jet and turboprop aircraft, aircraft engines and
                  aircraft parts (the "Aircraft") and related leases, and to
                  own, hold, maintain, manage, operate, lease, re-lease, sell or
                  otherwise dispose of the Aircraft or any interest therein and
                  to enter all contracts (including, but not limited to,
                  contracts relating to aircraft servicing, cash management and
                  administrative activities) and engage in all related
                  activities incidental thereto.

         (b)      To finance or refinance the activities described in paragraph
                  (a) above through the creation, offer, sale and issuance of
                  any debt securities of the Company upon such terms and
                  conditions as the Directors see fit for cash or in payment or
                  in partial payment for any property purchased or otherwise
                  acquired by the Company, any subsidiary of the Company or any
                  entity that may be established in the future in connection
                  with acquisitions of aircraft and which has guaranteed the
                  debt securities and other obligations of the Company (a
                  "Future AerCo Entity") and, to secure the repayment of such
                  debt securities, to grant a security interest or other form of
                  mortgage or charge in (i) the shares of its subsidiaries, (ii)
                  interests in accounts and the cash on deposit therein
                  established by or on behalf of the Company from time to time,
                  (iii) investments made or acquired from the proceeds of such
                  accounts and the proceeds from such investments, (iv) property
                  in which the Company has a security interest or other form of
                  mortgage or charge, (v) any interest of the Company in the
                  Aircraft, (vi) debts 


<PAGE>   4


                  owed to the Company and (vii) proceeds of any of the foregoing
                  and rights associated with any of the foregoing.

         (c)      To provide loans to, and guarantee or otherwise support the
                  obligations and liabilities of, the Company's subsidiaries and
                  any Future AerCo Entity and subsidiaries thereof on such terms
                  and in such manner as the Directors see fit and whether or not
                  the Company shall derive a benefit from the same so long as
                  such loans, guarantees or other support are provided in
                  connection with the purposes set forth in paragraph (a) above.

         (d)      To engage in currency and interest rate exchange transactions
                  for the purposes of avoiding, reducing, minimising, hedging
                  against or otherwise managing the risk of any loss, cost,
                  expense or liability arising, or which may arise, directly or
                  indirectly, from any change or changes in any interest rate or
                  currency exchange rate or in the price or value of any of the
                  Company's or its subsidiaries' property or assets, within
                  limits determined by the Directors from time to time and
                  submitted to the Rating Agencies, including but not limited to
                  dealings, whether involving purchases, sales or otherwise, in
                  foreign currency, spot and forward interest rate exchange rate
                  contracts, forward interest rate agreements, caps, floors and
                  collars, futures, options, swaps, and any other currency,
                  interest rate and other similar hedging arrangements and such
                  other instruments as are similar to, or derivatives of, any of
                  the foregoing.

         (e)      To establish, promote and aid in promoting, constitute, form
                  or organise, companies, syndicates or partnerships of all
                  kinds in any part of the world for the purposes set forth in
                  paragraph (a) above and to acquire, hold and dispose of
                  shares, securities and other interests in any such company,
                  syndicate or partnership.

         (f)      To take out, acquire, surrender and assign policies of
                  insurance and assurances with any insurance company or
                  companies which the Company may think fit and to pay the
                  premiums thereon.

         (g)      To do all such things as may be deemed incidental or conducive
                  to the attainment of the above objects or any of them.

5.       Capitalised terms used in this Memorandum and not otherwise defined
         herein shall bear the meaning ascribed to them in the Articles of
         Association of the Company.


                                       2


<PAGE>   5




6.       The Company is a public company.

WE, THE SUBSCRIBERS TO THIS MEMORANDUM OF ASSOCIATION, WISH TO BE FORMED INTO A
COMPANY PURSUANT TO THIS MEMORANDUM, AND WE AGREE TO TAKE THE NUMBER OF SHARES
SHOWN OPPOSITE OUR RESPECTIVE NAMES.


- ------------------------------       ---------------------     ----------------
                                                               Number of shares
Corporate names and registered       Signatures for and on     taken by each
offices ofsubscribers                behalf of subscribers     subscriber

Juris Limited                        ____________________      5
22 Grenville Street                  Director
St Helier
Jersey
Channel Islands

Lively Limited                       ____________________      5
22 Grenville Street                  Director
St Helier
Jersey
Channel Islands

Witness to the above signatures:     ____________________
                                     Margaret Blattmann
                                     22 Grenville Street
                                     St Helier
                                     Jersey
                                     Channel Islands

                                       3


<PAGE>   6


                             COMPANIES (JERSEY) LAW
                             ARTICLES OF ASSOCIATION
                  (Reprinted with amendments to 14th July 1998)

                                       of

                                  AerCo Limited

                                 Interpretation

1. In these Articles, if not inconsistent with the subject or context, the words
in the first following table shall bear the meanings set opposite to them
respectively in the second column.


WORDS                                 MEANINGS

Additional Aircraft                   Shall have the meaning given to
                                      that term in the Indenture.

Additional Ordinary Shares            The shares of any direct aircraft  
                                      owning subsidiary of the Company
                                      (excluding ALPS 94-1, AerCo Ireland, AerCo
                                      Ireland II and AerCo USA) which may be
                                      acquired by the Company (through
                                      acquisition or formation of such
                                      subsidiary) after the date of adoption of
                                      these Articles.

AerCo Ireland                         AerCo Ireland Limited, an Irish limited 
                                      liability company.

AerCo Ireland II                      AerCo Ireland II Limited, an
                                      Irish limited liability company.

AerCo Ireland Ordinary Shares         The ordinary shares of AerCo Ireland, 
                                      par value IR Pound 1.00 each to be  
                                      acquired by the Company.
AerCo Ireland II Ordinary Shares      The ordinary shares of AerCo Ireland II,
                                      par value IR Pound 1.00 each to be    
                                      acquired by the Company.

AerCo USA                             AerCo USA Inc., a Delaware corporation.

AerCo USA Shares                      The beneficial interest in the
                                      shares of common stock of AerCo USA, par
                                      value US$1.00 each to be acquired by the
                                      Company.

Affiliate                             As to any person, any other person that,
                                      directly or 


                                       4


<PAGE>   7

                                      indirectly, controls, is controlled by or
                                      is under the common control with such
                                      person or is a director or officer of such
                                      person. For the purposes of this
                                      definition, the term "control" (including
                                      the terms "controlling", "controlled by"
                                      and "under the common control with") of a
                                      person means possession, direct or
                                      indirect, of the power to vote 5% or more
                                      of the voting stock of such person or to
                                      direct or cause the direction of the
                                      management and policies of such person,
                                      whether through the ownership of voting
                                      stock, by contract or otherwise provided
                                      that none of the Company or any of its
                                      subsidiaries shall be Affiliates of GPA or
                                      any of its subsidiaries by virtue of GPA's
                                      (or any successor entity's) 5% ownership
                                      of the share capital of the Company.

ALPS 94-1                             Aircraft Lease Portfolio
                                      Securitization 94-1 Limited, a Jersey
                                      public limited liability company.

ALPS 94-1 Ordinary Shares             The ordinary shares of ALPS 94-1, par
                                      value US$1.00 each to be acquired by the
                                      Company.

these Articles                        These Articles of Association in
                                      their present form or as from time to time
                                      altered.

auditors                              Auditors of the Company appointed pursuant
                                      to these Articles.

bankrupt                              Shall have the meaning defined in the
                                      Interpretation (Jersey) Law, 1954.

Class A-C Notes                       The U.S. dollar denominated
                                      Class A, B and C Notes to be issued by the
                                      Company pursuant to the Indenture.

Class D Notes                         The U.S. dollar denominated Class D Notes
                                      to be issued by the Company pursuant to
                                      the Indenture.

Class E Notes                         The U.S. dollar denominated Class E Notes
                                      to be issued by the Company pursuant to
                                      the Indenture.

Class E Note Director                 Any Director who is appointed by the
                                      holder or holders of a majority in
                                      aggregate principal amount of the Class E
                                      Notes in accordance with Article 67.


                                       5

<PAGE>   8



clear days                            In relation to the period of a
                                      notice, shall mean that period excluding
                                      the day when the notice is served or
                                      deemed to be served and the day for which
                                      it is given or on which it is to take
                                      effect.

DCR                                   Duff & Phelps Credit Rating Co.

Directors                             The directors of the Company for the time
                                      being.

GPA                                   GPA Group plc.

holding company                       Shall have the meaning defined in the Law.

Indenture                             The trust indenture to be entered into by,
                                      inter alia, the Company pursuant to which
                                      the Class A-C Notes, the Class D Notes and
                                      the Class E Notes will be issued by the
                                      Company.

Independent Director                  A Director who is not at the time of his
                                      appointment or at any time during his
                                      service as Director, and has not been for
                                      the twenty-four months prior to his
                                      appointment as Director, an employee,
                                      consultant, officer or director of GPA,
                                      any holder of the Class E Notes or any
                                      Affiliate of any such person.

the Law                               The Companies (Jersey) Law 1991.

Member                                A person whose name is entered in the
                                      Register as the holder of shares in the
                                      Company.

month                                 Calendar month.

Moody's                               Moody's Investors Service, Inc.

notice                                A written notice unless otherwise
                                      specifically stated.

Office                                The registered office of the Company.

Ordinary Shares                       The ALPS 94-1 Ordinary Shares, the
                                      AerCo Ireland Ordinary Shares, the AerCo
                                      Ireland II Ordinary Shares, the AerCo USA
                                      Shares and the Additional Ordinary Shares.

paid up                               Shall include credited as paid up.
                                     
present in person                     In relation to general meetings of the 
                                      Company and

                                       6

<PAGE>   9

                                      to meetings of the holders of any class
                                      of shares, shall include present by
                                      attorney or by proxy or, in the case of a
                                      corporate shareholder, by representative.

Rating Agencies                       DCR, Moody's and Standard & Poor's.

Register                              The register of Members to be kept
                                      pursuant to Article 14 hereof.

Secretary                             Any person appointed by the Directors to
                                      perform any of the duties of secretary of
                                      the Company (including a temporary or
                                      assistant secretary), and in the event of
                                      two or more persons being appointed as
                                      joint secretaries any one or more of the
                                      persons so appointed.

Servicing Agreement                   The servicing agreement to be entered into
                                      between, inter alia, the Company, ALPS
                                      94-1 and Babcock & Brown Limited and dated
                                      as of the closing date of the underwritten
                                      offering of the Class A-C Notes or any
                                      successor servicing agreement providing
                                      for similar services.

Special Resolution                    A resolution of the Company passed as a
                                      special resolution in accordance with the
                                      law.

Standard & Poor's                     Standard & Poor's Ratings Group, a
                                      division of The McGraw - Hill Companies,
                                      Inc.



2. In these Articles, unless there be something in the subject or context
inconsistent with such construction:-

         (a)      the word "may" shall be construed as permissive and the word
                  "shall" shall be construed as imperative;

         (b)      the word "signed" shall be construed as including a signature
                  or representation of a signature affixed by mechanical or
                  other means;

         (c)      the words "in writing" shall be construed as including
                  written, printed, telexed, electronically transmitted or any
                  other mode of representing or reproducing words in a visible
                  form;


                                       7


<PAGE>   10


         (d)      words importing "persons" shall be construed as including
                  companies or associations or bodies of persons whether
                  corporate or unincorporate;

         (e)      words importing the singular number shall be construed as
                  including the plural number and vice versa;

         (f)      words importing the masculine gender only shall be construed
                  as including the feminine gender; and

         (g)      references to enactments are to such enactments as are from
                  time to time modified, re-enacted or consolidated and shall
                  include any enactment made in substitution for an enactment
                  that is repealed.


3. The headings herein are for convenience only and shall not affect the
construction of these Articles.

                                   PRELIMINARY

4. The preliminary expenses incurred in forming the Company may be discharged
out of the funds of the Company.

5. The business of the Company shall be commenced as soon after the
incorporation of the Company as the Directors think fit.

                            SHARE CAPITAL AND SHARES

6. The share capital of the Company is as specified in the Memorandum of
Association and the shares of the Company shall have the rights and be subject
to the conditions contained in these Articles.

7. Save as permitted by the law, the Company shall not give financial assistance
directly or indirectly for the purpose of, or in connection with, the
acquisition made or to be made by any person of any shares in the Company or its
holding company (if any).

8. Except as required by law, the Company shall not be bound by or recognise any
equitable, contingent, future or partial interest in any share, or (except only
as by these Articles otherwise provided or as by law required) any interest in
any fraction of a share, or any other right in respect of any share, except an
absolute right to the entirety thereof in the registered holder.

                                       8


<PAGE>   11


                               SHARE CERTIFICATES

9.  Every Member shall be entitled: -

         (a)      without payment, to one certificate for all his shares of each
                  class and, when part only of the shares comprised in a
                  certificate is sold or transferred, to a new certificate for
                  the remainder of the shares so comprised; or

         (b)      upon payment of such sum for each certificate as the Directors
                  shall from time to time determine, to several certificates
                  each for one or more of his shares of any class.

10. Every certificate shall be issued within two months after allotment or
lodgment of transfer (or within such other period as the conditions of issue
shall provide), shall be under seal, and shall specify the shares to which it
relates and the amount paid up thereon and if so required by the Law, the
distinguishing numbers of such shares.

11. In respect of a share held jointly by several persons, the Company shall not
be bound to issue more than one certificate, and delivery of a certificate for a
share to one of several joint holders shall be sufficient delivery to all such
holders.

12. If a share certificate is defaced, lost or destroyed, it may be renewed on
payment of such fee and on such terms (if any) as to evidence and indemnity and
the payment of out-of-pocket expenses of the Company in relation thereto as the
Directors think fit.

                             JOINT HOLDERS OF SHARES

13. Where two or more persons are registered as the holders of any share they
shall be deemed to hold the same as joint tenants with the benefit of
survivorship, subject to the following provisions:-

         (a)      the Company shall not be bound to register more than four
                  persons as the joint holders of any share;

         (b)      the joint holders of any share shall be liable, severally as
                  well as jointly, in respect of all payments to be made in
                  respect of such share;

         (c)      any one of such joint holders may give a good receipt for any
                  dividend, bonus or return of capital payable to such joint
                  holders;

                                       9

<PAGE>   12

         (d)      only the senior of the joint holders of a share shall be
                  entitled to delivery of the certificate relating to such share
                  or to receive notices from the Company or to attend general
                  meetings of the Company and any notice given to the senior
                  joint holder shall be deemed notice to all the joint holders;
                  and

         (e)      for the purpose of the provisions of this Article, seniority
                  shall be determined by the order in which the names of the
                  joint holders appear in the Register.

                               REGISTER OF MEMBERS

14. The Directors shall keep or cause to be kept at the Office or at such other
place in the Island of Jersey where it is made up, as the Directors may from
time to time determine, a Register in the manner required by the Law. In each
year the Directors shall prepare or cause to be prepared and filed an annual
return containing the particulars required by the Law.

                       TRANSFER AND TRANSMISSION OF SHARES

15. All transfers of shares shall be effected by notice (a "Transfer Notice") in
the usual common form or in any other form approved by the Directors.

16. All Transfer Notices shall be signed by or on behalf of the transferor and,
in the case of a partly paid share, by the transferee. The transferor shall be
deemed to remain the holder of the share until the name of the transferee is
entered on the Register in respect thereof.

17. No shares may be transferred without the prior approval of the Directors who
may, in their absolute discretion, and without assigning any reason therefor,
refuse to approve any transfer of shares, including, without limitation, a
transfer of shares on which the Company has a lien.

18. The Directors may decline to recognise any Transfer Notice, unless the
Transfer Notice is deposited at the Office or such other place as the Directors
may appoint accompanied by the certificate for the shares to which it relates
and such other evidence as the Directors may reasonably require to show the
right of the transferor to make the transfer.

19. If the Directors refuse to register any transfer of shares they shall,
within two months after the date on which the Transfer Notice was lodged with
the Company, send to the proposed transferor and transferee notice of the
refusal.

                                       10

<PAGE>   13

20. All Transfer Notices relating to transfers of shares which are registered
shall be retained by the Company, but any Transfer Notices relating to transfers
of shares which the Directors decline to register shall (except in any case of
fraud) be returned to the person depositing the same.

21. The registration of transfers of shares or of any class of shares may be
suspended whenever the Directors determine.

22. Unless otherwise decided by the Directors in their sole discretion, no fee
shall be charged in respect of the registration of any power of attorney or
other document relating to or affecting the title to any shares.

23. Any legal representative of a Member under legal disability and any person
becoming entitled to a share in consequence of the insolvency or bankruptcy of a
Member may, upon such evidence as to his title being produced as may from time
to time be required by the Directors and subject as hereinafter provided, elect
either to be registered himself as the holder of the share or to have some
person nominated by him registered as the holder thereof.

24. If the person so becoming entitled shall elect to be registered himself, he
shall deliver or send to the Company a Transfer Notice signed by him stating
that he so elects. If he shall elect to have another person registered, he shall
testify his election by signing a Transfer Notice in favour of that person. All
the limitations, restrictions and provisions of these Articles relating to the
right to transfer and the registration of transfers of shares shall be
applicable to any such Transfer Notice as aforesaid as would have existed had
such transfer occurred before the death, insolvency or bankruptcy of the Member
concerned.

25. A person becoming entitled to a share by reason of the insolvency or
bankruptcy of a Member shall be entitled to the same dividends and other
advantages to which he would be entitled if he were the registered holder of the
share, except that he shall not, before being registered as a Member in respect
of the share, be entitled in respect of it to exercise any right conferred by
membership in relation to meetings of the Company provided always that the
Directors may at any time give notice requiring any such person to elect either
to be registered himself or to transfer the share and if the notice is not
complied with within one month such person shall be deemed to have so elected to
be registered himself and all the restrictions on the transfer and transmission
of shares contained in these Articles shall apply to such election.


                                GENERAL MEETINGS

26. An annual general meeting shall be held once in every calendar year, either
in or outside the Island, at such time and place as may be determined by the


                                       11

<PAGE>   14

Directors; but so long as the Company holds its first annual general meeting
within eighteen months of its incorporation it need not hold it in the year of
its incorporation or in the following year. All other general meetings shall be
called extraordinary general meetings.

27. The Directors may whenever they think fit, and upon a requisition made in
writing by Members in accordance with the Law the Directors shall, convene an
extraordinary general meeting of the Company.

28. At any extraordinary general meeting called pursuant to a requisition,
unless such meeting is called by the Directors, no business other than that
stated in the requisition as the objects of the meeting shall be transacted.


                           NOTICE OF GENERAL MEETINGS

29. At least twenty-one clear days' notice shall be given of every annual
general meeting and of every general meeting called for the passing of a Special
Resolution, and at least fourteen clear days' notice shall be given of all other
general meetings. Every notice shall specify the place, the day and the time of
the meeting and in the case of special business, the general nature of such
business and, in the case of an annual general meeting, shall specify the
meeting as such. Notice of every meeting shall be given in the manner
hereinafter mentioned to all the Members and to the Directors and to the
auditors.

30. A meeting of the Company shall, notwithstanding that it is called by shorter
notice than that specified in Article 29 hereof, be deemed to have been duly
called if it is so agreed:-

    (a)   in the case of an annual general meeting, by all the Members entitled
          to attend and vote thereat; and

    (b)   in the case of any other meeting, by a majority in number of Members
          having a right to attend and vote at the meeting, being a majority
          together holding not less than ninety-five per cent in nominal value
          of the shares giving that right.

31. In every notice calling a meeting of the Company there shall appear with
reasonable prominence a statement that a Member entitled to attend and vote is
entitled to appoint one or more proxies to attend and vote instead of him and
that a proxy need not also be a Member.

                            

                                       12


<PAGE>   15

32. It shall be the duty of the Company, subject to the provisions of the Law,
on the calling of a meeting on the requisition in writing of such number of
Members as is specified by the Law:-

    (a)   to give to the Members entitled to receive notice of general meetings
          and to the Directors notice of any resolution which may properly be
          moved and which it is intended to move at that meeting; and

    (b)   to circulate to Members entitled to have notice of any general meeting
          sent to them, any statement of not more than one thousand words with
          respect to the matter referred to in any proposed resolution or the
          business to be dealt with at that meeting.

33. The accidental omission to give notice of a meeting to, or the non-receipt
of notice of a meeting by, any person entitled to receive notice shall not
invalidate the proceedings at that meeting.


                         PROCEEDINGS AT GENERAL MEETINGS

34. The business of an annual general meeting shall be to receive and consider
the accounts of the Company and the reports of the Directors and auditors, to
elect Directors (if necessary), to elect auditors and fix their remuneration, to
sanction a dividend if thought fit so to do, and to transact any other business
of which notice has been given.

35. No business shall be transacted at any general meeting except the
adjournment of the meeting unless a quorum of Members is present at the time
when the meeting proceeds to business. Such quorum shall consist of not less
than two Members present in person, but so that not less than two individuals
will constitute the quorum, provided that, if at any time all of the issued
shares in the Company are held by or by a nominee for a holding company, such
quorum shall consist of the Member present in person.

36. If within half an hour from the time appointed for the meeting a quorum is
not present, or if during the meeting a quorum ceases to be present, the
meeting, if convened by or upon the requisition of Members, shall be dissolved.
If otherwise convened the meeting shall stand adjourned to the same day in the
next week at the same time and place or such day, time and place as the
Directors shall determine.

37. The chairman (if any) of the Directors shall preside as chairman at every
general meeting of the Company. If there is no such chairman, or if at any
meeting he is not present the Members present in person shall choose one of the
Directors 

                                       13


<PAGE>   16

present to be chairman, or if no Director shall be present and willing to take
the chair the Members present in person shall choose one of their number to be
chairman.

38. The chairman may with the consent of any meeting at which a quorum is
present (and shall if so directed by the meeting) adjourn the meeting from time
to time and from place to place, but no business shall be transacted at any
adjourned meeting other than the business left unfinished at the meeting from
which the adjournment took place. When a meeting is adjourned for thirty days or
more, notice of the adjourned meeting shall be given as in the case of the
original meeting. Save as aforesaid, it shall not be necessary to give any
notice of any adjourned meeting or of the business to be transacted at an
adjourned meeting.

39. Except where otherwise provided in the Law or in these Articles, all
resolutions shall be adopted if approved by a majority of the votes cast. In the
event of an equality of votes at any general meeting, whether upon a show of
hands or on a poll, the chairman shall not be entitled to a second or casting
vote.

40. At any general meeting every question shall be decided in the first instance
by a show of hands and, unless a poll is demanded by the chairman or by any
Member, a declaration by the chairman that a resolution has on a show of hands
been carried or not carried, or carried or not carried by a particular majority
or lost, and an entry to that effect in the minutes of the meeting shall be
conclusive evidence of the fact without proof of the number or proportion of the
votes recorded in favour of or against such resolution.

41. If a poll is demanded in the manner mentioned above, it shall be taken at
such time (within twenty-one days) and in such manner as the chairman directs
and the results of such poll shall be deemed to be the resolution of the Company
in general meeting. A poll may be demanded upon the election of the chairman and
upon a question of adjournment and such poll shall be taken forthwith without
adjournment. Any business other than that upon which a poll has been demanded
may proceed pending the taking of the poll.

42. Minutes of all resolutions and proceedings of general meetings shall be duly
and regularly entered in books kept for that purpose and shall be, available for
inspection by a Member during business hours without charge. A Member may
require a copy of any such minutes in such manner, and upon payment of such sum,
as provided in the Law.

43. If a Member is by any means in communication with one or more other Members
so that each Member participating in the communication can hear what is said by
any other of them, each Member so participating in the communication is deemed
to be present in person at a meeting with the other Members so participating,


                                       14


<PAGE>   17

notwithstanding that all the Members so participating are not present together
in the same place. A meeting at which any or all of the Members participate as
aforesaid shall be deemed to be a general meeting of the Company for the
purposes of these Articles notwithstanding any other provisions of these
Articles and all of the provisions of these Articles and of the Law relating to
general meetings of the Company and to the proceedings thereat shall apply,
mutatis mutandis, to every such meeting.

44. A resolution in writing (including a Special Resolution but excluding a
resolution removing an auditor) signed by all Members who would be entitled to
receive notice of and to attend and vote at a general meeting at which such a
resolution would be proposed, or by their duly appointed attorneys, shall be as
valid and effectual as if it had been passed at a general meeting of the Company
duly convened and held. Any such resolution may consist of several documents in
the like form each signed by one or more of the Members or their attorneys and
signature in the case of a corporate body which is a Member shall be sufficient
if made by a director or other duly authorised officer thereof or its duly
appointed attorney.

45. (1) On a show of hands every Member present in person shall have one vote.

    (2) Subject to any special voting powers or restrictions for the time being
attached to any shares, as may be specified in the terms of issue thereof or
these Articles, on a poll every Member present in person shall have one vote for
each share held by him.

46. Where there are joint registered holders of any share, such persons shall
not have the right of voting individually in respect of such share but shall
elect one of their number to represent them and to vote whether in person or by
proxy in their name. In default of such election the person whose name appears
first in order in the Register in respect of such share shall be the only person
entitled to vote in respect thereof.

47. A Member for whom a special or general attorney is appointed or who is
suffering from some other legal incapacity or interdiction in respect of whom an
order has been made by any court having jurisdiction (whether in the Island of
Jersey or elsewhere) in matters concerning legal incapacity or interdiction may
vote, whether on a show of hands or on a poll, by his attorney, curator, or
other person authorised in that behalf appointed by that court, and any such
attorney, curator or other person may vote by proxy. Evidence to the
satisfaction of the Directors of the authority of such attorney, curator or
other person may be required by the Directors prior to any vote being exercised
by such attorney, curator or other person.

                                       15

<PAGE>   18

48. The Directors and the auditors shall be entitled to receive notice of and to
attend and speak at any meeting of Members. Save as aforesaid and as provided in
Article 47 hereof, no person shall be entitled to be present or take part in any
proceedings or vote either personally or by proxy at any general meeting unless
he has been registered as owner of the shares in respect of which he claims to
vote.

49. (1) No objection shall be raised to the qualification of any voter except at
the meeting or adjourned meeting at which the vote objected to is given or
tendered, and every vote not disallowed at such meeting shall be valid for all
purposes. Any such objection made in due time shall be referred to the chairman
of the meeting whose decision shall be final and conclusive.

    (2) Where a person is authorised under Article 57 hereof to represent a
body corporate at a general meeting of the Company the Directors or the chairman
of the meeting may require him to produce a certified copy of the resolution
from which he derives his authority.

50. On a poll a Member entitled to more than one vote need not use all his votes
or cast all the votes he uses in the same way.

51. The instrument appointing a proxy shall be in writing under the hand of the
appointor or of his attorney duly authorised in writing or if the appointor is a
corporation either under seal or under the hand of an officer or attorney duly
authorised. A proxy need not be a Member.

52. The instrument appointing a proxy and the power of attorney or other
authority (if any) under which it is signed, or a notarially certified copy of
that power or authority, shall be deposited at the Office within such time (not
excluding forty-eight hours) before the time for holding the meeting or
adjourned meeting or for the taking of a poll at which the person named in the
instrument proposes to vote as the Directors may from time to time determine.

53. The instrument appointing a proxy may be in any common form or in any other
form approved by the Directors including the following form:-

"AERCO LIMITED

I/We                                of
being a Member/Members of the above named Company
hereby appoint             of
or failing him                      of


                                       16


<PAGE>   19

as my/our proxy to vote for me/us on my/our behalf at the (annual or
extraordinary as the case may be) general meeting of the Company to be held on
the     day of           and at any adjournment thereof.

Signed this                day of           "

54. Unless the contrary is stated thereon the instrument appointing a proxy
shall be as valid as well for any adjournment of the meeting as for the meeting
to which it relates.

55. A vote given in accordance with the terms of an instrument of proxy shall be
valid notwithstanding the previous death or insanity of the principal or
revocation of the proxy or of the authority under which the proxy was executed
provided that no intimation in writing of such death, insanity or revocation
shall have been received by the Company at the Office before the commencement of
the meeting or adjourned meeting or the taking of the poll at which the proxy is
used.

56. The Directors may at the expense of the Company send by post or otherwise to
the Members instruments of proxy (with or without provision for their return
prepaid) for use at any general meeting or at any separate meeting of the
holders of any class of shares of the Company either in blank or nominating in
the alternative any one or more of the Directors or any other persons. If for
the purpose of any meeting invitations to appoint as proxy a person or one or
more of a number of persons specified in the invitations are issued at the
Company's expense they shall be issued to all (and not to some only) of the
Members entitled to be sent a notice of the meeting and to vote thereat by
proxy.

                                CORPORATE MEMBERS

57. Any body corporate which is a Member may by resolution of its directors or
other governing body authorise such person as it thinks fit to act as its
representative at any meeting of Members (or of any class of Members) and the
person so authorised shall be entitled to exercise on behalf of the body
corporate which he represents the same powers as that body corporate could
exercise if it were an individual.

                                    DIRECTORS

58. The number of Directors shall be five, except that prior to the issuance of
the Class E Notes, the number shall be not less than two. Following the issuance
of the Class E Notes, two of such Directors shall be Class E Note Directors who
shall be nominated and appointed pursuant to Article 67 and the remaining
Directors shall be Independent Directors. Save as provided in Article 67, no
person shall be appointed 

                                       17


<PAGE>   20

as a Director of the Company unless that person has been approved by a majority
of the existing Directors (if any) as having sufficient knowledge and experience
in the business conducted by the Company as described in Memorandum of
Association such approval not to be unreasonably withheld. At all times the
Directors appointed pursuant to Article 67 shall constitute a minority of the
Directors. The Company shall keep or cause to be kept at the Office a register
of its Directors in the manner required by the Law.

59. A Director need not be a Member but shall nevertheless be entitled to
receive notice of and to attend and speak at any general meeting or at any
separate meeting of the holders of any class of shares in the Company.

60. The Directors shall be paid out of the funds of the Company their reasonable
travelling and other expenses properly and necessarily expended by them in
attending meetings of the Directors or Members or otherwise on the affairs of
the Company. The Independent Directors shall also each be paid by way of
remuneration for their services a sum equal to US$75,000 per annum which shall
be deemed to accrue from day to day. The Independent Directors shall also each
be entitled to receive by way of additional remuneration US$1,000 in respect of
each day, or portion thereof, which they are required to devote to the
activities of the Company save for those days on which meetings of the Directors
are held in accordance with these Articles. The Directors appointed pursuant to
Article 67 shall not be entitled to remuneration for their services as
Directors.

                               ALTERNATE DIRECTORS

61. Any Director may at his sole discretion and at any time and from time to
time appoint any person (other than a person disqualified by law from being a
director of a company or, in the case of an Independent Director, a person who
would not meet the criteria for being an Independent Director) as an alternate
Director to attend and vote in his place at any meetings of Directors at which
he is not personally present. Each Director shall be at liberty to appoint under
this Article more than one alternate Director provided that only one such
alternate Director may at any one time act on behalf of the Director by whom he
has been appointed. Every such appointment shall be effective and the following
provisions shall apply in connection therewith:-

    (a)   every alternate Director while he holds office as such shall be
          entitled to notice of meetings of Directors and to attend and to
          exercise all the rights and privileges of his appointor at all such
          meetings at which his appointor is not personally present;

    (b)   every alternate Director shall ipso facto vacate office if and when
          his appointment expires or the Director who appointed him ceases to be

                                       18
<PAGE>   21
                  a Director of the Company or removes the alternate Director 
                  from office by notice under his hand served upon the Company;

         (c)      every alternate Director shall be entitled to be paid all
                  travelling, hotel and other expenses reasonably incurred by
                  him in attending meetings. The remuneration (if any) of an
                  alternate Director shall be payable out of the remuneration
                  payable to the Director appointing him as may be agreed
                  between them;

         (d)      a Director may act as alternate Director for another Director
                  and shall be entitled to vote for such other Director as well
                  as on his own account, but no Director shall at any meeting be
                  entitled to act as alternate Director for more than one other
                  Director; and

         (e)      a Director who is also appointed an alternate Director shall
                  be considered as two Directors for the purpose of making a
                  quorum of Directors when such quorum shall exceed two.

62. The instrument appointing an alternate Director may be in any form approved
by the Directors including the following form:-

"AERCO LIMITED

I,

a Director of the above named Company, in pursuance of the power in that behalf
contained in the Articles of Association of the Company, do hereby nominate and
appoint                     of                     to act as alternate Director
in my place at the meeting of the Directors to be held on the      day of
and at any adjournment thereof which I am unable to attend and to exercise all
my duties as a Director of the Company at such meeting.

Signed this     day of         "

63. Save as otherwise provided in Article 61 (b) hereof, any appointment or
removal of an alternate Director shall be by notice signed by the Director
making or revolving the appointment and shall take effect when lodged at the
Office or otherwise notified to the Company in such manner as is approved by the
Directors.

                               EXECUTIVE DIRECTORS


64. The Directors may from time to time appoint one or more of the Independent
Directors to be the holder of any executive office on such terms and for such
periods as they may determine provided however that such an appointment will not
entitle the Director to remuneration in excess of that provided in Article 60.
The 



                                       19
<PAGE>   22

appointment of any Director to any executive office shall be subject to
termination if he ceases to be a Director, but without prejudice to any claim
for damages for breach of any contract of service between him and the Company.

65. The Directors may entrust to and confer upon a Director holding any
executive office any of the powers exercisable by the Directors other than those
powers expressly requiring the unanimous affirmative vote of the Directors, upon
such terms and conditions and with such restrictions as they think fit, and
either collaterally with or to the exclusion of their own powers and may from
time to time revoke, withdraw, alter or vary all or any of such powers.

                            APPOINTMENT OF DIRECTORS

66. The first Directors of the Company appointed in writing by the Subscribers
to the Memorandum of Association and holding office on the date of adoption of
these Articles shall resign on the date of adoption of these Articles and shall
appoint three Independent Directors in their place.

67. (1) For so long as any amount is outstanding or payable in respect of the
Class E Notes, the holder or holders of a majority in aggregate principal amount
of the Class E Notes shall be entitled (by instrument in writing) to:

         (a)      nominate and appoint two Directors at any time;

         (b)      remove any Director appointed pursuant to sub-paragraph (i)(a)
                  above; and

         (c)      nominate and appoint a new Director to take the place of any
                  Director nominated and appointed pursuant to sub-paragraph
                  (i)(a) above who vacates his office for any reason.

Appointments pursuant to sub-paragraphs (i)(a) and (i)(c) above shall take
effect upon written acceptance by the nominated Director and written notice
delivered to the Office.

    (2) The Independent Directors shall not have the right to remove a
Director appointed pursuant to this Article.

68. Subject to the provisions of Articles 58 and 66 hereof, a majority of the
Directors (which majority shall include the remaining Independent Director or
Independent Directors) shall have power at any time and from time to time to
appoint any person to be an Independent Director in order to ensure that the
provisions of these Articles as to the number of Independent Directors required
to be in office are fulfilled. If at any time there are no Independent Directors
holding office the Company in general meeting (and not, for the avoidance of
doubt, the Class E Note 

                                       20
<PAGE>   23
Directors) shall be entitled to nominate and appoint such number of Independent
Directors as are required to be in office pursuant to these Articles. For the
purpose of making such appointment the Class E Note Directors shall be entitled
to make recommendations to the Members and the Members may, if they think fit,
at the expense of the Company hire an independent adviser to make
recommendations. The Members, in making the appointment, shall be entitled but
not bound to act in accordance with any such recommendations. Any Independent
Director so appointed shall hold office until he resigns, is removed or is
disqualified in accordance with Article 71 hereof.

69. At any general meeting at which an Independent Director retires or is
removed from office a majority of the remaining Directors (which majority shall
include the remaining Independent Director or Independent Directors) shall elect
an Independent Director to fill the vacancy. If there are no remaining
Independent Directors the Company in general meeting (and not, for the avoidance
of doubt, the Class E Note Directors) shall elect an Independent Director to
fill the vacancy. For the purpose of making such appointment the Class E Note
Directors shall be entitled to make recommendations to the Members and the
Members may, if they think fit, at the expense of the Company hire an
independent adviser to make recommendations. The Members, in making the
appointment, shall be entitled but not bound to act in accordance with any such
recommendations.

70. Two clear days' notice shall be given to the Company of the intention of any
Member to propose any person for election to the office of Director provided
always that, if the Members present at a general meeting unanimously consent,
the chairman of such meeting may waive the said notice and submit to the meeting
the name of any person duly qualified and willing to act.

             RESIGNATION, DISQUALIFICATION AND REMOVAL OF DIRECTORS

71. The office of a Director shall be vacated if:-

         (a)      he resigns his office by notice to the Company; or

         (b)      he ceases to be a Director by virtue of any provision of the
                  Law or he becomes prohibited or disqualified by law from being
                  a Director; or

         (c)      he becomes bankrupt or makes any arrangement or composition 
                  with his creditors generally; or

         (d)      he is removed from office by resolution of the Members; or

         (e)      in the case of a Director appointed pursuant to Article 67(i),
                  he is removed from office pursuant to Article 67(i); or




                                       21
<PAGE>   24

         (f)      in the case of an Independent Director, he ceases to be an
                  Independent Director within the meaning of that term contained
                  in these Articles; or

         (g)      save in the case of the Directors appointed pursuant to
                  Article 67, he is removed from office by a resolution passed
                  by a majority of the other Directors including each remaining
                  Independent Director.

                               POWERS OF DIRECTORS

72. The business of the Company shall be managed by the Directors who may
exercise all such powers of the Company as are not by the Law or these Articles
required to be exercised by the Company in general meeting, and the power and
authority to represent the Company in all transactions relating to real and
personal property and all other legal or judicial transactions, acts and matters
and before all courts of law shall be vested in the Directors. The Directors'
powers shall be subject to any Regulations of these Articles, to the provisions
of the Law and to such regulations, being not inconsistent with the aforesaid
regulations or provisions, as may be prescribed by the Company in general
meeting, but no regulations made by the Company in general meeting shall
invalidate any prior act of the Directors which would have been valid if such
regulations had not been made.

73. The Directors may, by power of attorney, mandate or otherwise, appoint any
person to be the agent of the Company for such purposes and on such conditions
as they determine, including authority for the agent to delegate all or any of
his powers.

74. (1) Notwithstanding any other provision of these Articles or any provision
of law that otherwise so empowers the Directors, for so long as any amount is
outstanding or payable under any of the Class A - C Notes, the Class D Notes or
the Class E Notes, the Directors shall not have the power to take any corporate
action that would cause the Company or any of its subsidiaries to be in
violation of Section 5.02 of the Indenture.

    (2) Notwithstanding any other provision of these Articles or any other
provision of law that otherwise so empowers the Directors, the Directors shall
conduct the business of the Company, and shall procure that the business of each
of the subsidiaries of the Company is conducted, such that it is a separate and
readily identifiable business from GPA and any of its Affiliates (it being
understood that the Company may publish financial statements that are
consolidated with those of GPA and any of its Affiliates, if to do so is
required by any applicable law or accounting principles from time to time in
effect) and the Directors:-


                                       22
<PAGE>   25

         (a)      will observe, and will cause the Company's subsidiaries to
                  observe, all corporate formalities necessary to remain legal
                  entities separate and distinct from GPA and any of its
                  Affiliates;

         (b)      will maintain the Company's assets and liabilities and will
                  cause the Company's subsidiaries to maintain each of their
                  respective assets and liabilities, separate and distinct from
                  those of GPA and any of its Affiliates;

         (c)      will maintain, and will cause the Company's subsidiaries to
                  maintain records, books, accounts and minutes separate from
                  those of GPA and any of its Affiliates;

         (d)      will cause the Company to pay its obligations in the ordinary
                  course of business, and will cause the Company's subsidiaries
                  to pay each of their respective obligations in the ordinary
                  course of business, as legal entities separate from GPA and
                  any of its Affiliates;

         (e)      will keep the Company's funds, and will cause the Company's
                  subsidiaries to keep each of their respective funds, separate
                  and distinct from any funds of GPA and any of its Affiliates,
                  and will receive, deposit, withdraw and disburse such funds
                  separately from any funds of GPA and, any of its Affiliates;

         (f)      will conduct the Company's business, and will cause the
                  Company's Subsidiaries to conduct each of their respective
                  businesses, in its or their own name, and not in the name of
                  GPA or any of its Affiliates;

         (g)      will not agree, and will cause the Company's subsidiaries not
                  to agree, to pay or become liable for any debt of GPA or any
                  of its Affiliates, other than to make payments in the form of
                  indemnity as required by the express terms of any agreements
                  to be entered into with GPA or any of its Affiliates on the
                  date of execution of the Indenture;

         (h)      will not hold out, and will cause the Company's subsidiaries
                  not to hold out, that the Company or any of its subsidiaries
                  is a division of GPA or any of its Affiliates, or that GPA or
                  any of its Affiliates is a division of the Company or any of
                  its subsidiaries;

         (i)      will not induce, and will cause the Company's subsidiaries not
                  to induce, any third party to rely on the creditworthiness of
                  GPA or any of its Affiliates in order that such third party
                  will be induced to 



                                       23
<PAGE>   26

                  contract with the Company, or any of its subsidiaries, as the 
                  case may be; and

         (j)      will not enter into, and will cause the Company's subsidiaries
                  not to enter into, any transactions between the Company or any
                  of its subsidiaries, as the case may be, and GPA or any of its
                  Affiliates that are more favourable to either party than
                  transactions that the parties would have been able to enter
                  into at such time on an arm's length basis with a
                  non-affiliated third party, other than any agreements to be
                  entered into with GPA or any of its Affiliates on the date of
                  execution of the Indenture.

                           TRANSACTIONS WITH DIRECTORS

75. A Director, including an alternate Director but excluding a Class E Note
Director, may hold any other office or place of profit under the Company (other
than the office of auditor) in conjunction with his office of Director and may
act in a professional capacity to the Company on such terms as to tenure of
office, remuneration and otherwise as the Directors may determine. For the
avoidance of doubt the foregoing provision shall not prevent a Class E Note
Director from acting as a director, officer or employee of any company which
provides cash management, administrative or other services to the Company or of
any holding company of any such company.

76. Subject to the provisions of the law, and provided that he has disclosed to
the Directors the nature and extent of any of his material interests, a Director
notwithstanding his office:-

         (a)      may be a party to, or otherwise interested in, any transaction
                  or arrangement with the Company or in which the Company is
                  otherwise interested;

         (b)      other than, in the case of an Independent Director, to the
                  extent limited by the definition thereof, may be a director or
                  other officer of, or employed by, or a party to any
                  transaction or arrangement with, or otherwise interested in,
                  any body corporate promoted by the Company or in which the
                  Company is otherwise interested or which engages in
                  transactions similar to those engaged in by the Company and
                  might present a conflict of interest for such Director in
                  discharging his duties; and

         (c)      shall not, by reason of his office, be accountable to the
                  Company for any benefit which he derives from any such office
                  or employment or from any such transaction or arrangement or
                  from any interest in any 


                                       24
<PAGE>   27

                  such body corporate and no such transaction or arrangement 
                  shall be liable to be avoided on the ground of any such 
                  interest or benefit.

77. For the purposes of Article 76:-

         (a)      a general notice given to the Directors that a Director is to
                  be regarded as having an interest of the nature and extent
                  specified in the notice in any transaction or arrangement in
                  which a specified person or class of persons is interested
                  shall be deemed to be a disclosure that the Director has an
                  interest in any such transaction of the nature and extent so
                  specified; and

         (b)      an interest of which a Director has no knowledge and of which
                  it is unreasonable to expect him to have knowledge shall not
                  be treated as an interest of that Director.

                            PROCEEDINGS OF DIRECTORS

78. The Directors may meet together for the despatch of business, adjourn and
otherwise regulate their meetings as they think fit. Questions arising at any
meeting shall be determined by a majority of votes provided however that at any
meeting of the Directors, including a meeting held by telephone or other means
of communication in accordance with Article 86 hereof a resolution shall not be
considered to be validly passed unless approved by a majority of the Independent
Directors. In the case of an equality of votes the chairman elected in
accordance with Article 84 shall not have a second or casting vote. A Director
who is also an alternate Director shall be entitled, in the absence of the
Director whom he is representing, to a separate vote on behalf of such Director
in addition to his own vote. A Director may, and the Secretary on the
requisition of a Director shall, at any time, summon a meeting of the Directors
by giving to each Director and alternate Director not less than twenty-four
hours' notice of the meeting provided that any meeting may be convened at
shorter notice and in such manner as each Director or his alternate Director
shall approve provided further that unless otherwise resolved by the Directors
notices of Directors= meetings need not be in writing.

79. A meeting of the Directors at which a quorum is present shall be competent
to exercise all powers and discretions for the time being exercisable by the
Directors. The quorum necessary for the transaction of the business of the
Directors shall be two Independent Director personally present (and not for the
avoidance of doubt, present through an alternate Director) except that the
quorum necessary for the transaction of any business specified in Article 80
shall be all of the Directors.


                                       25
<PAGE>   28

80. Notwithstanding any other provision of these Articles and provided that any
such action referred to below does not contravene the terms of the Indenture,
the powers the Directors shall be limited such that an affirmative unanimous
vote of all of the Directors shall be required to:

(a)      (i) cause the Company to take any action, or, in its capacity
                  as a shareholder, cause any of its subsidiaries to take any
                  action, with respect to the institution of any proceeding by
                  the Company or any of its subsidiaries seeking liquidation,
                  winding up, reorganisation, arrangement, adjustment,
                  protection, relief or composition of its debts under any law
                  relating to bankruptcy, insolvency or reorganisation or relief
                  of debtors or seeking the entry of an order for relief or the
                  appointment of a receiver, trustee, or other similar official
                  for it or any substantial part of its property, or seeking
                  termination of the Company's existence or the existence of any
                  of its subsidiaries, or to propose the passing by the Members
                  of a Special Resolution to effect any of the foregoing, and
                  (ii) in the case of any such proceeding instituted against the
                  Company or any of its subsidiaries (but not instituted by it),
                  cause the Company or any of its subsidiaries to take any
                  corporate action to authorise or consent to such proceedings
                  (including, without limitation, the entry of an order for
                  relief against, or the appointment of a receiver, trustee,
                  custodian or other similar official for the Company or any of
                  its subsidiaries or any substantial part of its property, or
                  that of any subsidiary);

         (b)      cause the Company, in its capacity as shareholder, to cause
                  any of its subsidiaries to take any action to increase or
                  reduce or reclassify the share capital of any of its
                  subsidiaries or issue additional shares of any of its
                  subsidiaries;

         (c)      propose the passing by the Members of a Special Resolution to
                  amend the Memorandum or these Articles;

         (d)      transfer the Ordinary Shares or any part thereof or any
                  interest therein save for any transfer pursuant to or as
                  contemplated by the Security Documents (as defined in the
                  Indenture);

         (e)      cause the Company to take any action, or, in its capacity as a
                  shareholder, cause any of its subsidiaries to take any action,
                  with respect to the acquisition of any Additional Aircraft; or

         (f)      cause the Company to take any action, or, in its capacity as a
                  shareholder, cause any of its subsidiaries to take any action,
                  with respect to any merger, consolidation, amalgamation or 
                  reorganisation



                                       26
<PAGE>   29
                  of the Company or any of its subsidiaries, as the case may be,
                  with or into any other person or entity, or any conveyance,
                  transfer or other disposal of (whether in one transaction or
                  in a series of transactions) all or substantially all of the
                  ALPS 94-1 Ordinary Shares, the AerCo Ireland Ordinary Shares,
                  the AerCo Ireland II Ordinary Shares, the AerCo USA Shares,
                  the Additional Ordinary Shares or all or substantially all of
                  the assets of the Company and/or its subsidiaries save for any
                  transfer pursuant to or as contemplated by the Security
                  Documents (as defined in the Indenture).

81. A Director, notwithstanding his interest, may be counted in the quorum
present at any meeting at which he is appointed to hold any office or place of
profit under the Company, or at which the terms of his appointment are arranged,
but he may not vote on his own appointment or the terms thereof.

82. A Director, notwithstanding his interest, may be counted in the quorum
present at any meeting at which any contract or arrangement in which he is
interested is considered and, subject to the provisions of Articles 76 and 77
hereof, he may vote in respect of any such contract or arrangement.

83. The continuing Directors or a sole continuing Director may act
notwithstanding any vacancies in their number, but, if the number of Independent
Directors is less than the number fixed as the quorum, the continuing Directors
or Director may act only for the purpose of calling a general meeting of the
Company. If there are no Directors or no Director is able or willing to act,
then any Member or the Secretary may summon a general meeting for the purpose of
appointing Directors.

84. The Directors may from time to time elect from their number, and remove, a
chairman and/or deputy chairman and/or vice-chairman and determine the period
for which they are to hold office provided always that only an Independent
Director may be elected as chairman. The chairman, or in his absence the deputy
chairman, or in his absence, the vice-chairman, shall preside at all meetings of
the Directors, but if no such chairman, deputy chairman or vice-chairman be
elected, or if at any meeting the chairman, the deputy chairman and
vice-chairman be not present within five minutes after the time appointed for
holding the same, the Directors present may choose one of their number to be the
chairman of the meeting.

85. The Directors may delegate any of their powers to committees consisting of
such Directors or Director or such other persons as they think fit provided that
where any such committee includes one or both of the Class E Note Directors a
majority of any such committee shall consist of Independent Directors. Any
committee so formed shall in the exercise of the powers so delegated conform to
any regulations 



                                       27
<PAGE>   30

that may be imposed on it by the Directors. The meetings and proceedings of any 
such committee consisting of one or more persons shall be governed by the 
provisions of these Articles regulating the meetings and proceedings of the 
Directors, so far as the same are applicable and are not superseded by any 
regulations made by the Directors under this Article.

86. If a Director is by any means in communication with one or more other
Directors so that each Director participating in the communication can hear what
is said by any other of them, each Director so participating in the
communication is deemed to be present at a meeting with the other Directors so
participating, notwithstanding that all the Directors so participating are not
present together in the same place.

87. A resolution in writing of which notice has been given to all of the
Directors or to all of the members of a committee appointed pursuant to Article
85 hereof (as the case may be), if signed by a majority of the Directors or of
the members of such committee (as the case may be) (which majority (i) in the
case of a resolution in writing of which notice has been given to all of the
Directors, shall also include all of the Independent Directors and (ii) in the
case of a resolution in writing of which notice has been given to all of the
members of a committee approved pursuant to Article 85 hereof and which includes
one or both Class E Note Directors, shall also include all of the Independent
Directors who are members of that committee), shall be valid and effectual as if
it had been passed at a meeting of the Directors or of the relevant committee
duly convened and held, except that any resolution necessary for the transaction
of any business specified in Article 80 shall be signed by all of the Directors.
Such resolution may consist of two or more documents in like form each signed by
one or more of the Directors or members of the relevant committee.

88. All acts done bona fide by any meeting of Directors or of a committee
appointed by the Directors or by any person acting as a Director shall,
notwithstanding that it is afterwards discovered that there was some defect in
the appointment of any such Director or committee or person acting as aforesaid,
or that they or any of them were disqualified or had vacated office or were not
entitled to vote, be as valid as if every such person had been duly appointed
and was qualified and had continued to be a Director or a member of a committee
appointed by the Directors and had been entitled to vote.

                                   MINUTE BOOK

89. The Directors shall cause all resolutions in writing passed in accordance
with Articles 44 and 87 hereof and minutes of proceedings at all general
meetings of the Company or of the holders of any class of the Company's shares
and of the Directors and of committees appointed by the Directors to be entered
in books kept for the 



                                       28
<PAGE>   31

purpose. Any minutes of a meeting, if purporting to be signed by the chairman 
of the meeting or by the chairman of the next succeeding meeting, shall be 
evidence of the proceedings.

                                    SECRETARY

90. The Secretary shall be appointed by the Directors and any secretary so
appointed may be removed by the Directors. Anything required or authorised to be
done by or to the Secretary may, if the office is vacant or there is for any
other reason no secretary capable of acting, be done by or to any assistant or
deputy secretary or if there is no assistant or deputy secretary capable of
acting, by or to any officer of the Company authorised generally or specially in
that behalf by the Directors provided that any provisions of these Articles
requiring or authorising a thing to be done by or to a Director and the
Secretary shall not be satisfied by its being done by or to the same person
acting both as Director and as, or in place of, the Secretary. The Company shall
keep or cause to be kept at the Office a register of particulars with regard to
its Secretary in the manner required by the Law.

                                      SEALS

91. The Company shall have a common seal and may in accordance with the law have
an official seal for use outside of the Island and an official seal for sealing
securities issued by the Company or for sealing documents creating or evidencing
securities so issued.

92. The Directors shall provide for the safe custody of all seals and no seal
shall be used except by the authority of a resolution of the Directors or of a
committee of the Directors authorised in that behalf by the Directors.

93. The Directors may from time to time make such regulations as they think fit
determining the persons and the number of such persons who shall sign every
instrument to which a seal is affixed and until otherwise so determined every
such instrument shall be signed by one Director and shall be countersigned by
the Secretary or by a second Director. The Company may, in writing under its
common seal, authorise an agent appointed for the purpose to affix any official
seal to a document to which the Company is a party.

                                    DIVIDENDS

94. Subject to the provisions of the law, the Company may by resolution declare
dividends in accordance with the respective rights of the Members, but no
dividend shall exceed the amount recommended by the Directors.


                                       29
<PAGE>   32

95. All unclaimed dividends may be invested or otherwise made use of by the
Directors for the benefit of the Company until claimed. No dividend shall bear
interest as against the Company.

96. Any dividend which has remained unclaimed for a period of ten years from the
date of declaration thereof shall, if the Directors so resolve, be forfeited and
cease to remain owing by the Company and shall thenceforth belong to the Company
absolutely.

97. Any dividend or other monies payable on or in respect of a share may be paid
by cheque or warrant sent through the post to the registered address of the
Member or person entitled thereto, and in the case of joint holders to any one
of such joint holders, or to such person and to such address as the holder or
joint holders may in writing direct. Every such cheque or warrant shall be made
payable to the order of the person to whom it is sent or to such other person as
the holder or joint holders may in writing direct, and payment of the cheque or
warrant shall be a good discharge to the Company. Every such cheque or warrant
shall be sent at the risk of the person entitled to the money represented
thereby.

98. A general meeting declaring a dividend may, upon the recommendation of the
Directors, direct payment of such dividend wholly or in part by the distribution
of specific assets, and in particular of paid up shares or debentures of any
other company, and the Directors shall give effect to such resolution; and where
any difficulty arises in regard to the distribution they may settle the same as
they think expedient, and in particular may issue certificates representing part
of a shareholding or fractions of shares, and may fix the value for distribution
of such specific assets or any part thereof, and may determine that cash payment
shall be made to any Members upon the footing of the value so fixed, in order to
adjust the rights of Members, and may vest any specific assets in trustees upon
trust for the persons entitled to the dividend as may seem expedient to the
Directors, and generally may make such arrangements for the allotment,
acceptance and sale of such specific assets or certificates representing part of
a shareholding or fractions of shares, or any part thereof, and otherwise as
they think fit.

99. Any resolution declaring a dividend on the shares of any class, whether a
resolution of the Company in general meeting or a resolution of the Directors,
or any resolution of the Directors for the payment of a fixed dividend on a date
prescribed for the payment thereof, may specify that the same shall be payable
to the persons registered as the holders of shares of the class concerned at the
close of business on a particular date, notwithstanding that it may be a date
prior to that on which the resolution is passed (or, as the case may be, that
prescribed for payment of a fixed dividend), and thereupon the dividend shall be
payable to them in accordance with their respective holdings so registered, but
without prejudice to the rights inter se in 



                                       30
<PAGE>   33

respect of such dividend of transferors and transferees of any shares of the 
relevant class.

                               ACCOUNTS AND AUDIT

100. The Company shall keep accounting records and the Directors shall prepare
accounts of the Company, made up to such date in each year as the Directors
shall from time to time determine, in accordance with and subject to the
provisions of the Law.

101. No Member shall have any right to inspect any accounting records or other
book or document of the Company except as conferred by the Law or authorised by
the Directors or by resolution of the Company.

102. The Directors, or the Company by resolution in general meeting, shall from
time to time appoint auditors for any period or periods to examine the accounts
of the Company and to report thereon in accordance with the Law and the auditors
shall, unless and until otherwise resolved by the Company in general meeting, be
Arthur Andersen.

                                     NOTICES

103. Any notice to be given to or by any person pursuant to these Articles shall
be in writing, save as provided in Article 78 hereof. In the case of joint
holders of a share, all notices shall be given to that one of the joint holders
whose name stands first in the Register in respect of the joint holding and
notice so given shall be sufficient notice to all the joint holders.

104. Any notice may be posted to or left at the registered address of any
person, and any notice so posted shall be deemed to be served one clear day
after the day it was posted.

105. Any Member present in person at any meeting of the Company shall, for all
purposes, be deemed to have received due notice of such meeting and, where
requisite, of the purposes for which such meeting was convened.

106. Any notice or document served on a Member shall, notwithstanding that such
Member be then dead or bankrupt and whether or not the Company has notice of his
death or bankruptcy, be deemed to have been duly served on such Member as sole
or joint holder, unless his name shall at the time of the service of the notice
or document have been removed from the Register, and such service shall for all
purposes be deemed a sufficient service of such notice or document on all
persons 



                                       31
<PAGE>   34

interested (whether jointly with or as claiming through or under him) in the 
shares of such Member.

107. Notwithstanding any of the Provisions of these Articles, any notice to be
given by the Company to a Director or to a Member may be given in any manner
agreed in advance by any such Director or Member.

                                   WINDING UP

108. Subject to any particular rights or limitations for the time being attached
to any shares, as may be specified in these Articles or upon which such shares
may be issued, if the Company is wound up, the assets available for distribution
among the Members shall be applied first in repaying to the Members the amount
paid up on their shares respectively, and if such assets shall be more than
sufficient to repay to the Members the whole amount paid up on their shares, the
balance shall be distributed among the Members in proportion to the amount which
at the time of the commencement of the winding up had been actually paid up on
their said shares respectively.

109. If the Company is wound up, the Company may, with the sanction of a Special
Resolution and any other sanction required by the Law, divide the whole or any
part of the assets of the Company among the Members in specie and the liquidator
or, where there is no liquidator, the Directors, may, for that purpose, value
any assets and determine how the division shall be carried out as between the
Members or different classes of Members, and with the like sanction, vest the
whole or any part of the assets in trustees upon such trusts for the benefit of
the Members as he with the like sanction determines, but no Member shall be
compelled to accept any assets upon which there is a liability.

                                    INDEMNITY

110. (1) A Director of the Company shall not be liable to the Company or its
shareholders for monetary damages for breach of fiduciary duty as a Director to
the fullest extent permitted by Jersey law.

     (2) (a) Each person (and the heirs, executors or administrators of such
person) who was or is a party or is threatened to be made a party to, or is
involved in any threatened, pending or completed action, suit or proceeding,
whether civil, criminal, administrative or investigative, by reason of the fact
that such person is or was a director or officer of the Company or is or was
serving at the request of the Company as a director or officer of another
corporation, partnership, joint venture, trust or other enterprise, shall be
indemnified and held harmless by the Company to the fullest extent permitted by
Jersey law. The right to indemnification conferred in 



                                       32
<PAGE>   35

this Article shall also include the right to be paid by the Company the expenses
incurred in connection with any such proceeding in advance of its final 
disposition to the fullest extent authorised by Jersey law. The right to 
indemnification conferred in this Article shall be a contract right.

         (b) The Company may, by action of its Board of Directors, provide
indemnification to such of the officers, employees and agents of the Company to
such extent and to such effect as the Board of Directors shall determine to be
appropriate and authorised by Jersey law.

         (3) The Directors shall have power to purchase and maintain in the name
of and at the expense of the Company insurance for the benefit of any person who
is or was a Director, officer, employee or agent of the Company, or is or was
serving at the request of the Company as a director, officer, trustee, employee
or agent of another corporation, partnership, joint venture, trust or other
enterprise against any expense, liability or loss incurred by such person in any
such capacity or arising out of his status as such, whether or not the Company
would have the power to indemnify him against such liability under Jersey law.

         (4) The rights and authority conferred in this Article shall not be
exclusive of any other right which any person may otherwise have or hereafter
acquire.

         (5) Neither the amendment nor repeal of this Article nor the adoption
of any provision of the Memorandum of Association or these Articles nor, to the
fullest extent permitted by Jersey law, any modification of law, shall eliminate
or reduce the effect of this Article in respect of any arts or omissions
occurring prior to such amendment, repeal, adoption or modification.

                        NON-APPLICATION OF STANDARD TABLE

111. The regulations constituting the Standard Table in the Companies (Standard
Table) (Jersey) Order 1992 shall not apply to the Company.



                                       33
<PAGE>   36

                             ARTICLES OF ASSOCIATION

                                      INDEX


ARTICLE                                                                PAGE NO.
Accounts and Audit...................................................
Alternate Directors..................................................
Appointment of Directors.............................................
Corporate Members....................................................
Directors............................................................
Dividends............................................................
Executive Directors..................................................
General Meetings.....................................................
Indemnity............................................................
Interpretation.......................................................
Joint Holders of Shares..............................................
Minute Book..........................................................
Non-Application of Standard Table....................................
Notice of General Meetings...........................................
Notices..............................................................
Powers of Directors..................................................
Preliminary..........................................................
Proceedings at General Meetings......................................
Proceedings of Directors.............................................
Register of Members..................................................
Resignation, Disqualification and Removal of Directors...............
Seals................................................................
Secretary............................................................
Share Capital and Shares.............................................
Share Certificates...................................................
Transactions with Directors..........................................
Transfer and Transmission of Shares..................................
Winding Up...........................................................



                                       34
<PAGE>   37


SIGNATURES FOR AND ON BEHALF OF THE SUBSCRIBERS TO THE MEMORANDUM OF ASSOCIATION



    Juris Limited                                 ______________________________
                                                             DIRECTOR




    Lively Limited                                ______________________________
                                                             DIRECTOR





    Witness to the above signatures:              ______________________________
                                                  Margaret Blattmann
                                                  22 Grenville Street
                                                  St Helier
                                                  Jersey
                                                  Channel Islands




                                       35

<PAGE>   1


                                                                     Exhibit 5.1

                      [ Davis Polk & Wardwell Letterhead ]

                                        January 26, 1999

AerCo Limited
22 Grenville Street
St. Helier
Jersey JE4 8PX
Channel Islands

Dear Sirs:

     We have acted as United States counsel to AerCo ("AerCo") in connection 
with AeroCo's offer (the "Exchange Offer") to exchange four subclasses of its 
Notes due July 15, 2023 (the "New Notes") for any and all of its outstanding 
subclasses of Notes due July 15, 2023 (the "Old Notes").

     We have examined originals or copies, certified or otherwise identified to 
our satisfaction, of such documents, corporate records, certificates of public 
officials and other instruments as we have deemed necessary or advisable for 
the purposes of rendering this opinion.

     Based on the foregoing, we are of the opinion that:

     1.   Assuming the due execution and delivery of the New Notes, the New 
Notes, when executed, authenticated and delivered in exchange for the Old Notes 
in accordance with the Exchange Offer will constitute valid and binding 
obligations of AerCo enforceable in accordance with their terms, subject to 
applicable bankruptcy, insolvency, reorganization, moratorium, fraudulent 
conveyance and similar laws affecting creditors' rights generally and equitable 
principles.

     2.   The statements in the Prospectus under the captions "Tax 
Considerations - United States Taxation" and "Legal Matters" insofar as such 
statements constitute summaries of the legal matters, documents or proceedings 
under the laws of the United States, fairly summarize the matters referred to 
therein.

     We are members of the Bar of the State of New York, and we express no 
opinion as to the laws of any jurisdiction other than the laws of the State of 
New York and the federal laws of the United States of America.

     We hereby consent to the use of our name under the captions "Tax 
Considerations" and "Legal Matters" in the Prospectus forming a part of the 
Registration Statement, and to the filing of this opinion as an exhibit to the 
Registration Statement.

                                        Very truly yours,

                                        /s/ Davis Polk & Wardwell


                      [ Davis Polk & Wardwell Footer ]


<PAGE>   1


                                                                    Exhibit 5.2.

                     [ Mourant du Feu & Jeune letterhead ]

AerCo Limited
22 Grenville Street
St Helier
Jersey JE4 8PX
Channel Islands

                                                              21st January, 1999

Our ref: AS/AERCO/1318408.US1

Dear Sirs,

AerCo Limited

We have acted as special counsel to AerCo Limited, a public limited liability 
company incorporated in Jersey (the "COMPANY"), in connection with the issuance 
by the Company of four classes of Notes, the Subclass A-1 Notes, Subclass A-2 
Notes, Subclass B-1 Notes and Subclass C-1 Notes (collectively, the "NEW 
NOTES"). The New Notes will be issued pursuant to an indenture (the 
"INDENTURE") entered into between the Company and Bankers Trust Company, as 
trustee (the "TRUSTEE") on July 15, 1998.

In that connection, we have examined originals or copies, certified or 
otherwise identified to our satisfaction, of such documents, corporate records 
and other instruments as we have deemed necessary or appropriate for the 
purposes of this opinion, including the following:

(a)  the Certificate of Incorporation of the Company;

(b)  the Memorandum and Articles of Association of the Company to be filed with 
     the Securities and Exchange Commission as an exhibit to Amendment No. 2 
     to the Registration Statement (as defined below);

(c)  the Indenture appearing as Exhibit 4.1 to the Registration Statement;

(d)  the Registration Statement on Form F-4 (Registration No. 333 66973) first 
     filed by the Company with the Securities and Exchange Commission pursuant 
     to the Securities Act of 1933, as amended, on 9th November, 1998 in 
     connection with

                        [ Mourant du Feu & Jeune Footer ]


<PAGE>   2


                      [ Mourant du Feu & Jeune logo ]

     the registration of the New Notes pursuant to the Exchange Offer (as 
     therein defined) to be made by the Company and as amended through the date 
     hereof (the "REGISTRATION STATEMENT");

(e)  the draft prospectus (the "PROSPECTUS") appearing in the Registration 
     Statement; and

(f)  a specimen of each class of the Notes appearing as part of Exhibit 4.1 to 
     the Registration Statement.

Based upon the foregoing we are of the opinion as follows:

(1)  the Company has been duly incorporated and is validly existing as a public
     limited liability company under the laws of Jersey and has full corporate
     power and authority to own its assets and conduct its business as described
     in the Registration Statement;

(2)  assuming that (i) the Indenture was duly and validly authorized, executed 
     and delivered by the Company and the Trustee in accordance with all 
     relevant applicable laws; (ii) the Indenture constitutes the legal, valid 
     and binding agreement and obligation of the Company enforceable in 
     accordance with its terms under the laws of the State of New York (by 
     which laws it is expressed to be governed); (iii) the Indenture is 
     enforceable against the Company under such laws, and (iv) the directors of 
     the Company were acting in its best interests when authorising, executing 
     and delivering the Indenture, it constitutes the legal, valid and binding 
     agreement and obligation of the Company, enforceable against the Company 
     in accordance with its terms, subject to (a) applicable bankruptcy, 
     reorganization, insolvency, fraudulent transfer, moratorium or other laws 
     affecting creditors' rights generally from time to time in effect; (b) 
     overriding principles of jurisdiction in the Jersey Court and (c) general 
     principles of equity; and

(3)  when the New Notes have been duly authorized, issued and delivered by the 
     Company, provided the New Notes constitute the valid and binding 
     obligations of the Company under the laws of the State of New York by 
     which laws the New Notes are expressed to be governed, the New Notes will 
     be legally and validly issued in Jersey and will constitute valid and 
     binding obligations of the Company, subject to (i) applicable bankruptcy, 
     reorganization, insolvency, fraudulent transfer, moratorium or other laws 
     affecting creditors' rights generally from time to time in effect and (ii) 
     general principles of equity.

We do not express any opinion as to any laws other than the laws of Jersey as 
such laws are applied by the Courts of Jersey as at the date of this letter.

<PAGE>   3


                      [ Mourant du Feu & Jeune logo ]

We know that we may be referred to as legal advisers who have opined upon the
validity of the New Notes on behalf of the Company, in the Registration 
Statement and in any Prospectus forming a part of the Registration Statement, 
and we hereby consent to such use of our name in the Registration Statement and 
any amendments thereto, as well as to the use of this letter as an exhibit to 
the Registration Statement.

Yours faithfully,



MOURANT DU FEU & JEUNE


<PAGE>   1
                                                                     EXHIBIT 8.2

KPMG LOGO

       KPMG Tax Advisers           Telephone +356 1 708 1000
       6 George's Dock             Telefax   +353 1 708 1470
       IFSC
       Dublin 1
       Ireland                                         Our Ref
                                                       Your Ref 70387.40

                                                                 25 January 1999

AerCo Limited
22 Grenville Street
St Helier
Jersey JE4 8PX
Channel Islands

Dear Sirs

We have acted as special tax counsel for AerCo Limited (the "Company") in
connection with the registration by the Company of the four classes of Notes,
the Subclass A-1, the Subclass A-2, the Subclass B-1, and the Subclass C-1
(collectively, the "New Notes") pursuant to the Exchange Offer. We hereby
confirm the opinion attributed to us (the "Opinion") set forth under the
captions "Risk Factors -- Income Tax Risks" and "Tax Considerations -- Irish
Taxation of the AerCo Group" in the prospectus (the "Prospectus") that is part
of the Registration Statement on Form F-4 (Registration No. 333-66973) first
filed by the Company with the Securities and Exchange Commission on November 9,
1998. Capitalized terms used herein but not defined have the same meanings as
provided in the Prospectus.

We hereby consent to the use of our name under the captions "Risk Factors -- 
Income Tax Risks" and "Tax Considerations -- Irish Taxation of the AerCo Group" 
in the Prospectus. The issuance of such a consent does not concede that we are 
an "Expert" for the purposes of the Securities Act of 1933.

Yours faithfully



/s/ KPMG


<PAGE>   1

                                                                    Exhibit 8.3


         bmj/jle                                                26 January 1999


         AerCo Limited
         22 Grenville Street
         St Helier
         Jersey, JE4 8PX
         Channel Islands ("AERCO")

         Bankers Trust Company
         4 Albany Street
         New York, NY 10006
         U.S.A. (not in its individual capacity but solely in its capacity as 
         Trustee under the Indenture defined below) (the "TRUSTEE")



$800,000,000 NOTES EXCHANGE OFFER

Dear Sirs

We have been asked to provide this opinion to you in connection with certain tax
matters set out in the prospectus that is part of the Registration Statement (as
defined below).

1.1.         DOCUMENTS EXAMINED

             For the purposes of this opinion, we have examined:--

             (i)     the Registration Statement in Form F-4 (file No. 333-66973)
                     first filed by AerCo with the Securities and Exchange
                     Commission on 9 November 1998 (the "REGISTRATION
                     STATEMENT") in respect of registration by AerCo of the
                     Notes.





<PAGE>   2


26 January 1999
Page 2



             (ii)    Indenture dated 15 July 1998 between (1) AerCo as issuer
                     and (2) Bankers Trust Company as initial trustee (the
                     "INDENTURE").

             (iii)   Global Notes, to be issued in accordance with and in the
                     same form as in the Indenture and to be registered with the
                     Securities and Exchange Commission, as follows:--

                     (a)      Subclass A-1 Floating Rate Note;

                     (b)      Subclass A-2 Floating Rate Note;

                     (c)      Subclass B-1 Floating Rate Note; and

                     (d)      Subclass C-1 Floating Rate Note

                     (together the "NOTES");

             (iv)    Deposit Agreement dated 15 July 1998 expressed to be made
                     between AerCo, Bankers Trust Company and the beneficial
                     owners from time to time of CDIs as therein defined.

1.2          INTERPRETATION

             In this opinion:--

             "Documents" means the Indenture and the Notes;

             "Original Notes Issue" means an issue of notes in July 1998
             pursuant to the Indenture.

             "Shannon Certificate" means a certificate under section 445 of the
             Taxes Consolidation Act 1997 issued in respect of AerCo.

             Headings are for ease of reference only.

1.3          SCOPE OF OPINION

             This opinion letter is limited to the matters stated herein and 
             does not extend, and is not to be read as extending by implication,
             to any other matters whatsoever.





<PAGE>   3


26 January 1999
Page 3



             We have made no investigation of, and express no opinion on, the
             laws, or the effect on the Documents and the transactions
             contemplated thereby of the laws, of any country or jurisdiction
             other than Ireland, and this opinion is strictly limited to the
             laws of Ireland as in force on the date hereof and as currently
             applied by the courts (excluding any foreign law to which reference
             may be made under the rules of Irish private international law). As
             to certain matters we have relied on Revenue practice as we
             understand it to be at the date of this opinion and on
             confirmations obtained from the Revenue in connection with the
             Original Notes Issue (the "Original Revenue Confirmations"); as to
             this we refer you further to paragraphs 2(h) and 5(ii) below.

             It should be understood that we have not acted as tax advisers to
             AerCo, AerFi or any other party in connection with the transactions
             constituted by the Documents and/or contemplated by the
             Registration Statement. We have not been responsible for
             investigating or confirming the accuracy of the facts, including
             statements of foreign law, or the reasonableness of any statements
             or opinion contained in the Registration Statement, other than our
             opinion as stated in various sub-paragraphs under the heading "Tax
             Considerations -- Irish Tax Considerations", or any of the other
             Documents, or ensuring that no relevant facts or statements have
             been omitted therefrom. We have not for the purpose of this opinion
             made any other enquiries, carried out any searches or examined any
             contract, instrument or document or corporate records, including
             any Shannon Certificate or other documents relating to the Shannon
             certification of AerCo, other than the Documents.

1.4          This opinion letter is to be construed in accordance with the laws
             of Ireland as at the date hereof.  The opinions expressed herein 
             are given on the basis of the foregoing and the assumptions set 
             out in paragraph 2.

2.           ASSUMPTIONS

             In considering the Registration Statement and in rendering this
             opinion, we have, without further enquiry, assumed:--

             (a)     that the Notes will at all relevant times be listed on a
                     stock exchange which is a recognised stock exchange for the
                     purposes of section 64 of the Taxes Consolidation Act 1997
                     (the Luxembourg Stock Exchange is so recognised);

             (b)     that as a matter of the laws of New York, being the
                     governing law of the Notes and of the Indenture and the
                     location where the Notes are held, the Notes will at all
                     relevant times be in bearer form, be transferable to any
                     person by physical delivery, and, as far as the Documents
                     (other than the Deposit Agreement) are concerned,


<PAGE>   4


26 January 1999
Page 4

                     be freely negotiable;

             (c)     that no Paying Agent or any other person or persons through
                     whom interest on the Notes and the Book-Entry Interests is
                     paid will at any relevant time be in Ireland;

             (d)     the due performance of the Documents by all parties 
                     thereto;

             (e)     that there are no agreements or arrangements in existence
                     and contemplated between the parties (or any of them) to
                     the Documents which have not been disclosed to us and which
                     in any way amend, add to or vary the terms or conditions of
                     the Documents;

             (f)     that the warranties and representations set out in the
                     Documents, other than warranties as to Irish law (except
                     solvency law and tax law which is not set out below), are
                     true and accurate;

             (g)     as regards the opinion at paragraph 3(g), that the Notes
                     will be issued outside Ireland and that payments on the
                     Notes will not be made from a bank account held in Ireland;

             (h)     that the Revenue Commissioners will adopt the same approach
                     to the tax treatment of the Notes as is set out in the
                     Original Revenue Confirmations.

3.           OPINION

             Having regard to the foregoing, and on the basis of the assumptions
             set out in paragraph 2 above and subject to the reservations
             expressed at paragraph 5 below, we are of the opinion that:

             (a)     there will be no withholding or deduction on account of
                     Irish taxes with respect to principal and interest paid by
                     AerCo on the Notes, or further onwards payments of the
                     principal and interest on the Book-Entry Interests;

             (b)     The issue of Definitive Notes may cause interest payments
                     thereon to be subject to Irish withholding tax at the
                     standard income tax rate (currently 24%).

                     Ireland has tax treaties with a number of jurisdictions
                     which, under certain circumstances, reduce the rate of
                     Irish withholding tax on payments of interest to persons
                     resident in such jurisdictions. A holder of a Definitive
                     Note who is entitled 

<PAGE>   5


26 January 1999
Page 5

                     to the benefit of Article 11 of the income tax treaty
                     between the United States and Ireland (the "Treaty") (such
                     a holder a "US Holder") will normally be eligible to
                     recover in full any Irish tax withheld from payments of
                     interest to which such US Holder is beneficially entitled
                     by making a claim under the Treaty on the appropriate form.

                     Alternatively, a claim may be made by a U.S. Holder in
                     advance of a payment of interest. If the claim is accepted
                     by the Irish Revenue, it will normally authorize subsequent
                     payments to that U.S. Holder to be made without withholding
                     for Irish tax.

             (c)     Noteholders who are not ordinarily resident in Ireland will
                     not be subject to Irish income tax in respect of interest
                     paid by AerCo on the Notes so long as the interest payments
                     are made by AerCo in the course of carrying on relevant
                     trading operations under its Shannon certificate ("Shannon
                     Certified Operations"). After December 2005 or on the
                     earlier termination of AerCo Shannon Certified Operations,
                     the exemption from Irish tax described above enjoyed by
                     Noteholders who are not ordinarily resident in Ireland will
                     terminate, absent a change in law in the intervening
                     period.

                     Interest payments made by AerCo have an Irish source and
                     whether or not paid gross are, under existing Irish tax
                     law, chargeable to Irish income tax by self-assessment
                     subject to the provisions of any applicable double tax
                     treaty. However, as a matter of practice, the Irish tax
                     authorities do not pursue collection of any such liability
                     to Irish tax in respect of persons who are regarded as not
                     being resident in Ireland except where such persons:

                     (i)      receive payments of interest in the name of a
                              person (including a trustee) or in the name of an
                              agent or branch in Ireland having the management
                              and control of the interest; or

                     (ii)     seek to claim relief and/or repayment of tax
                              deducted at source in respect of taxed income from
                              Irish sources; or

                     (iii)    are chargeable to Irish corporation tax on the
                              income of an Irish branch or agency or to income
                              tax on the profits of a trade carried on in
                              Ireland to which the interest is attributable.

                     The termination of the legislative provisions dealing with
                     Shannon Certified 

<PAGE>   6


26 January 1999
Page 6

                 Operations on 31 December 2005 will not affect the position set
                 out at (a) above as regards Irish withholding tax applicable to
                 interest payments on the Notes.

         (d)     Capital gains tax is chargeable at the rate of 20% of taxable
                 capital gains with allowance being made for inflation adjusted
                 acquisition costs and enhancement expenditure. The Notes are
                 chargeable assets for Irish capital gains tax purposes.
                 However, non-resident holders would only be liable for capital
                 gains tax on the disposal of the Notes where the Notes are
                 unquoted and derive their value or the greater part of their
                 value from land and buildings or mineral rights situated in
                 Ireland.

         (e)     Irish capital acquisitions tax ("CAT") on individuals applies
                 to gifts and inheritances (i) where the person making the 
                 gift or inheritance is domiciled in Ireland at the date of 
                 the gift or inheritance or (ii) to the extent that the 
                 property of which the gift or inheritance consists is 
                 situated in Ireland at the date of the gift or inheritance. 
                 The person by whom CAT is primarily payable is the person who
                 receives the gift or inheritance. Persons who are secondarily
                 liable include the donor, his personal representative and an 
                 agent, trustee or other person in whose care the property 
                 constituting the gift or inheritance or the income therefrom
                 is placed.  All taxable gifts and inheritances received by an
                 individual since June 2, 1982 [1 December 1988] are aggregated
                 and only the excess over a certain tax-free threshold is
                 taxed. The tax-free threshold is dependent on the relationship
                 between the donor and donee and the aggregation of all previous
                 gifts and inheritances. The tax-free threshold amounts
                 currently in force are (a) IR(pound)12,860 in the case of
                 persons who are not related to one another, (b) IR(pound)25,720
                 in the case of gifts and inheritances received from a brother,
                 sister or from a brother or sister of a parent or from a
                 grandparent, and (c) IR(pound)192,900 in the case of gifts and
                 inheritances received from a parent.  Gifts and inheritances
                 passing between spouses are exempt from CAT. CAT is charged at
                 progressive rates ranging in the case of gifts from 15% to 30%
                 and in the case of inheritances from 20% to 40%. The Notes may
                 be property situate in Ireland for CAT purposes. There is no
                 gift and inheritance tax convention between the United States
                 and Ireland.  Although an estate tax convention between the two
                 countries was ratified in 1951, estate duty was abolished in
                 Ireland in 1975, and it is not clear whether the estate tax
                 convention is applicable to Irish gift and inheritance taxes
                 that replaced the former estate duty.


<PAGE>   7


26 January 1999
Page 7



         (f)     A 2% Irish probate tax would be payable on the value of any
                 Notes passing under the will or intestacy of a deceased
                 individual. No probate tax is payable on inheritances from
                 spouses. Since probate tax was only introduced in 1993, it is
                 not clear whether credit relief would be available under the
                 estate tax convention discussed above.

         (g)     no stamp duty, stamp duty reserve tax or issue, documentary,
                 registration or other similar tax imposed by any government
                 department or other taxing authority of or in Ireland will be
                 payable on the creation, initial issue or delivery of the
                 Notes.  However, since the Notes will be secured on, inter
                 alia, shares in Irish companies, stamp duty of IR(pound)500
                 will be payable on the document creating the primary security
                 therefor, with any collateral security documents subject to
                 duty at a nominal rate of IR(pound)10. As to these duties, we
                 refer you to our opinion of even date herewith regarding
                 certain bankruptcy and other issues.

         (h)     Any transfer of the Notes which is effected by the delivery of
                 such Notes will not be chargeable to Irish stamp duty by reason
                 of the Notes being bearer securities.  Any transfer of Notes
                 which is effected by an instrument in writing will be exempt
                 from Irish stamp duty under Section 106 of the Finance Act,
                 1993 unless the Notes in question had been issued for a  price
                 which was less than 90% of their nominal value.  If that
                 exemption is not applicable, and in the absence of any other
                 applicable exemption, such instrument in writing would be
                 chargeable to Irish stamp duty if either the instrument was
                 executed in Ireland or, wherever executed, related to any
                 property situated in Ireland (which would include Notes
                 physically located in Ireland) or any matter or thing done or
                 to be done in Ireland. Any Irish stamp duty chargeable on such
                 an instrument would normally be at the rate of 1% of the amount
                 of the consideration for the transfer or, if greater, the
                 market value of the transferred Notes, although lower duty
                 would apply to transfers by way of security and certain other
                 limited classes of transfer. Transfer of book-entry interests
                 in the Notes which are not effected by written instrument will
                 not be chargeable with Irish stamp duty.

4        REGISTRATION STATEMENT -- CERTAIN STATEMENTS

         The statements of our opinion and of Irish law under the subheadings
         "Irish Income and Withholding Tax on Payments on the Notes", "Taxation
         of Capital Gains", "Irish Capital Acquisitions Tax", "Probate Tax", and
         "Irish Stamp Duty" in the section of the Offering Memorandum headed
         "Tax Considerations -- Irish Tax Considerations" are accurate in all
         material respects, subject to the statements made in the introductory


<PAGE>   8


26 January 1999
Page 8



         paragraph of the general heading "Tax Considerations -- Irish Tax
         Considerations".




5.       RESERVATIONS

(i)      We draw to your attention that the Original Revenue Confirmations
         were obtained 8 months prior to the date of this opinion and in
         connection with the Original Notes Issue rather than the present
         issue.  Although we are not aware of any intervening change of
         policy on the part of the Revenue Commissioners, it should be
         noted that policy of the Revenue Commissioners may change over
         time and we cannot confirm that it has not changed since the date
         of the Original Revenue Confirmations or that it will not change in
         the future.

(ii)     Under section 1002 of the Taxes Consolidation Act, 1997, any debt owed
         to a party may be attached by the Irish Revenue Commissioners in order
         to discharge any liabilities of that party in respect of outstanding
         tax whether the liabilities are due on its own account or as an agent
         or trustee.

6.       GENERAL

         This opinion speaks of its date and is addressed to, and is solely for
         the benefit of, the addressees and their legal advisers. It may not be
         relied upon by, or disclosed to, any other person, without our prior
         written consent.

7.       CONSENT

         We hereby consent to the use of our name under the captions "Risk
         Factors -- Income Tax Risks", "Tax Considerations -- Irish Tax
         Considerations", and "The Refinancing of ALPS 94-1 and Acquisition of
         the Transferring Companies -- Bankruptcy Considerations" in the
         prospectus, that is part of the Registration Statement in the form
         attached to this opinion. The issuance of such a consent does not
         concede that we are an "Expert" for the purposes of the Securities Act
         of 1933.

Yours faithfully

/s/ David Glynn

McCann FitzGerald

<PAGE>   1


                                                                     Exhibit 8.4

                     [ Mourant du Feu & Jeune LETTERHEAD ]

AerCo Limited
22 Grenville Street
St. Helier
Jersey
JE4 8PX
Channel Islands

                                                              21st January, 1999

Our ref: AS/AERCO/1318408.US2

Dear Sirs,

AerCo Limited

We have acted as Jersey tax counsel for AerCo Limited (the "COMPANY") a public 
limited liability company formed under the laws of Jersey in connection with 
the filing by the Company with the Securities and Exchange Commission of a 
Registration Statement on Form F-4 (the "REGISTRATION STATEMENT") registering 
Subclass A-1 Notes, Subclass A-2 Notes, Subclass B-1 Notes and Subclass C-1 
Notes (collectively, the "NEW NOTES") to be issued by the Company pursuant to 
an Indenture (the "INDENTURE") entered into between the Company and Bankers 
Trust Company, as trustee. The New Notes will be issued in connection with the 
Exchange Offer (as defined in the Registration Statement) being made by the 
Company.

Assuming proper execution of the Indenture and proper issue of the New Notes in 
the form filed as part of an exhibit to the Registration Statement we hereby 
confirm that the statements set forth in the prospectus (the "PROSPECTUS") 
forming a part of the Registration Statement under the heading "TAX 
CONSIDERATIONS - Certain Jersey Tax Considerations", to the extent that they 
constitute matters of law, accurately describe the material Jersey tax 
consequences to holders of the New Notes.

We know that we are referred to under the headings "TAX CONSIDERATIONS - 
Certain Jersey Tax Considerations", "RISK FACTORS - Income Tax Risks" and

                       [ Mourant du Feu & Jeune Footer ]

<PAGE>   2


                      [ Mourant du Feu & Jeune logo ]

- - LEGAL MATTERS" in the Prospectus forming a part of the Registration 
Statement, and we hereby consent to such use of our name therein and to the 
use of this opinion for filing with the Registration Statement as Exhibit 8.4 
thereto.

Yours faithfully,




MOURANT DU FEU & JEUNE


<PAGE>   1
[AIRCRAFT LOGO]

                                                                 EXHIBIT 23.2




                              CONSENT OF APPRAISER


     We consent to the use of our report included herein and the references to
our firm in the AerCo Registration Statement to be filed with the Securities and
Exchange Commission.


Dated:  26 January 1999



                                AIRCRAFT INFORMATION SERVICES, INC.


                                
                                BY: /s/  John D. McNicol
                                    ____________________________________________

                                Name:    John D. McNicol
                                Title:   Vice President - Appraisals & Forecasts





      Headquarters, 26072 Merit Circle, Suite 123, Laguna Hills, CA 92653
      TEL: 949-582-8888    FAX: 949-582-8887     E-MAIL: [email protected]

<PAGE>   1
                              BK Associates, Inc.
                            1295 Northern Boulevard
                           Manhasset, New York 11030
                  (516) 365-6272  (Bullet)  Fax (516) 365-6287

                                                                    EXHIBIT 23.3




                              CONSENT OF APPRAISER


                                            26 January 1999


Dear Sir;

     We consent to the use of our report included herein and to the references
to our firm in the AerCo Limited Registration Statement Form F-4.




                                            BK ASSOCIATES, INC.
                              
                                            /s/ John F. Keitz
                                            ________________________________
                                            John F. Keitz
                                            President
                                            ISTAT Senior Certified Appraiser



JFK/kf

<PAGE>   1
                                                                [AIRCLAIMS LOGO]

                                                                   EXHIBIT 23.4
                              CONSENT OF APPRAISER

We consent to the use of our reports included herein and the references to our
firm in the AerCo Limited Registration Statement on Form F-4.




Dated: January 26, 1999

Airclaims Limited

           /s/  Edward Picniazck
By:---------------------------------------
Name:  Edward Picniazck
Title: Director, Consultancy & Information Services

<PAGE>   1
   
                                                                    Exhibit 23.5
    

INDEPENDENT AUDITORS' CONSENT
                                                        
To the Board of Directors
Of AerCo Limited (the "company")

As independent public accountants, we hereby consent to the use of our reports
dated December 2, 1997 included in the Prospectus, which is part of this
Registration Statement, and to all the references to our firm included in or
made a part of this Registration Statement on Form F-4 (file no. 333-66973) of
AerCo Limited.

/s/ Arthur Andersen

Arthur Andersen
Chartered Accountants
St Helier, Jersey

January 26, 1999
 

<PAGE>   1
                                                                    Exhibit 23.9
                         INDEPENDENT AUDITORS' CONSENT

To the Board of Directors
of AerCo Limited (the "Company")


As independent public accountants, we hereby consent to the use of our report
date November 23, 1998 included in the Prospectus, which is part of this
Registration Statement, and to all references to our firm included in or made a
part of this Registrations Statement of Form F-4 (file no. 333-66973) of AerCo
Limited.


/s/ KPMG
KPMG
Chartered Accountants
5 George's Dock
IFSC
Dublin 1
Ireland 

January 26, 1999

<PAGE>   1
[AIRCRAFT LOGO]                                                  EXHIBIT 99.8






                                AerFi Group plc
                                 Aviation House
                                    Shannon
                                    Ireland





          Half Life and Adjusted Base and Current Market Value Opinion
                           34 Aircraft - AerCo Fleet

                            AISI File No.: A9S003BVO

                             Date: 20 January 1999
                         Values as of: 18 January 1999


      Headquarters, 26072 Merit Circle, Suite 123, Laguna Hills, CA 92653
      TEL: 949-582-8888     FAX: 949-582-8887    E-MAIL: [email protected]



<PAGE>   2
[AIRCRAFT LOGO]

20 January 1999

AerFi Group plc
Aviation House
Shannon
Ireland

Subject: Half Life and Adjusted Base and Current Market Value Opinion - 34
         Aircraft.

         AISI File number: A9S003 BVO

Dear Sirs:

In response to your request, Aircraft Information Services, Inc. (AISI) is
pleased to offer our opinion to the above addressees of the half life and
adjusted base and current market values of the Fleet of Aircraft as identified
in Table I (the "Aircraft").

1.      METHODOLOGY AND DEFINITIONS

The standard terms of reference for commercial aircraft value are "half-life
base market value" and "half-life current market value" of an "average"
aircraft. Base value is a theoretical value that assumes a balanced market while
current market value is the value in the real market; both assume a hypothetical
average aircraft condition. AISI value definitions are consistent with the
current definitions of the International Society of Transport Aircraft Trading
(ISTAT), those of 01 January 1994. AISI is a member of that organization and
employs an ISTAT Certified and Senior Certified Aircraft Appraiser.

AISI defines a "base value" as that of a transaction between equally willing and
informed buyer and seller, neither under compulsion to buy or sell, for a single
unit cash transaction with no hidden value or liability, and with supply and
demand of the sale item roughly in balance. Base value are typically given for
aircraft in "new" condition, "average half-life" condition, or in a specifically
described condition unique to a single aircraft at a specific time. An "average"
aircraft is an operable airworthy aircraft in average physical condition and
with average accumulated flight hours and cycles, with clear title and standard
unrestricted certificate of airworthiness, and registered in an authority which
does not represent a penalty to aircraft value or liquidity, with no damage
history and with inventory configuration and level of modification which is
normal for its intended use and age. AISI assumes average condition unless
otherwise specified in this report. "Half-life" condition assumes that every
component or maintenance service which has a prescribed interval that determines
its service life, overhaul interval or interval between maintenance services, is
at a condition which is one-half of the 

      Headquarters, 26072 Merit Circle, Suite 123, Laguna Hills, CA 92653
      TEL: 949-582-8888     FAX: 949-582-8887    E-MAIL: [email protected]
 
<PAGE>   3
20 January 1999
AISI File No. A9S003BVO
Page -2-


total interval. It should be noted that AISI and ISTAT value definitions apply
to a transaction involving a single aircraft, and that transactions involving
more than one aircraft are often executed at considerable and highly variable 
discounts to a single aircraft price, for a variety of reasons relating to an 
individual buyer of seller.

AISI defines a "current market value", which is synonymous with the older term 
"fair market value" as that value which reflects the real market conditions, 
whether at, above or below the base value conditions. Assumption of a single 
unit sale and definitions of aircraft condition, buyer/seller qualifications 
and type of transaction remain unchanged from that of base value. Current 
market value takes into consideration the status of the economy in which the 
aircraft is used, the status of supply and demand for the particular aircraft 
type, the value of recent transactions and the opinions of informed buyers and 
sellers. Current market value assumes that there is no short term time 
constraint to buy or sell.

AISI encourages the use of base values to consider historical trends, to 
establish a consistent baseline for long term value comparisons and future 
value considerations, or to consider how actual market values vary from 
theoretical base values. Base values are less volatile than current market 
values and tend to diminish regularly with time. Base values are normally 
inappropriate to determine near term values. AISI encourages the use of current 
market values to consider the probable near term value of an aircraft.

AISI determines an "adjusted market value" by determining the value of known 
deviations from half-life condition, which may be better or worse than 
half-life condition, and to account for better or worse than average physical 
condition, and the inclusion of additional equipment, or absence of standard 
equipment. Our opinion of the adjusted base values of the Aircraft are derived 
from information and specifications supplied by AerFi Group plc. No physical 
inspection of the Aircraft or their essential records was made by AISI for the 
purposes of this report.


2.      VALUATION

Adjustments from half life have been applied based on the current maintenance 
status of the Aircraft as indicated in the Aircraft Technical & Maintenance 
Detail sheets supplied to AISI and in accordance with standard AISI methods. 
Adjustments are calculated only where there is sufficient information to do so, 
or where reasonable assumptions can be made.

With regard to airframe and gear maintenance, if no time between check/overhaul 
(TBO) or time since check/overhaul (TSO) information was provided, and if the 
total hours/cycles of the airframe do not exceed the TBO limits then the total 
hours/cycles of the airframe were assumed to be the TSO. This was typical of 
newer aircraft. If no information was provided and if the TSO could not be 
calculated, then half life was assumed. With regard to the engines, due to the 
limited information provided, all engines are considered to be in half life 
condition.

<PAGE>   4
                                                                 [AIRCRAFT LOGO]

20 January 1999
AISI File No. A9S003BVO
Page - 3 -

All hours and cycle information provided for airframe, C Check, D Check, and
gear have been projected from the Aircraft Technical & Maintenance Detail sheet
dates to 18 January 1999 based on a daily utilization factor calculated for each
aircraft.

It is our considered opinion that the half life and adjusted base and current
market values of the Aircraft are as follows in Table I subject to the
assumptions, definitions, and disclaimers herein.

Unless otherwise agreed by Aircraft Information Services, Inc. (AISI) in
writing, this report shall be for the sole use of the client/addressee. This
report is offered as a fair and unbiased assessment of the subject aircraft or
equipment. AISI has no past, present, or anticipated future interest in the
subject aircraft or equipment. The conclusions and opinions expressed in this
report are based on published information, information provided by others,
reasonable interpretations and calculations thereof and are given in good faith.
Such conclusions and opinions are judgments that reflect conditions and values
which are current at the time of this report. The values and conditions reported
upon are subject to any subsequent change. AISI shall not be liable to any party
for damages arising out of reliance or alleged reliance on this report, or for
any parties action or failure to act as a result of reliance or alleged reliance
on this report.



Sincerely,

AIRCRAFT INFORMATION SERVICES, INC.



/s/ John D. McNicol
John D. McNicol
Vice President
Appraisals & Forecasts





<PAGE>   5
                                                                 [AIRCRAFT LOGO]

                           ATTACHMENT 1 - AerCo Fleet
                              AISI File A9S003BVO
                          Values as of 18 January 1999

<TABLE>
<CAPTION>
                                                               Half Life         Half Life          Adjusted       Adjusted
                                                               Base Value    Current Market Value  Base Value   Current Market Value
                                                                  1999             1999               1999            1999         
No    Type           MSN     DO14     Engine        MTOW       US Dollars       US Dollars         US Dollars      US Dollars

<S>   <C>            <C>     <C>      <C>           <C>        <C>              <C>                <C>             <C>
 1    A300B4-200       240   May-83   CF6-50C2      363,760    $10,770,000      $10,770,000        $10,990,000     $10,990,000
 2    A320-200          85   Feb-90   CFM56-5A1     162,000    $26,240,000      $26,240,000        $25,610,000     $25,610,000
 3    A320-200         299   Apr-92   CFM56-5A3     166,450    $29,620,000      $29,620,000        $29,310,000     $29,310,000
 4    A320-200         362   Nov-92   V2500-A1      166,450    $28,820,000      $28,820,000        $28,900,000     $28,900,000
 5    A320-200         391   Feb-93   CFM56-5A3     169,757    $30,950,000      $30,950,000        $31,130,000     $31,130,000
 6    A320-200         403   Dec-93   CFM56-5A1     158,731    $30,170,000      $30,170,000        $29,780,000     $29,780,000
 7    B737-300       24465   Aug-89   CFM56-3B1     135,000    $21,460,000      $21,460,000        $21,860,000     $21,860,000
 8    B737-300       24677   Mar-90   CFM56-3B1     135,000    $22,310,000      $22,310,000        $22,880,000     $22,880,000
 9    B737-300       24908   Mar-91   CFM56-3C1     139,500    $23,790,000      $23,790,000        $23,300,000     $23,300,000
10    B737-300       24909   Apr-91   CFM56-3C1     139,500    $23,790,000      $23,790,000        $24,380,000     $24,380,000
11    B737-300       26068   Jan-92   CFM56-3C1     139,000    $24,720,000      $24,720,000        $24,160,000     $24,160,000
12    B737-400       23868   Oct-88   CFM56-3C1     143,500    $22,940,000      $22,940,000        $23,350,000     $23,350,000
13    B737-400       23979   Jan-89   CFM56-3C1     143,500    $24,100,000      $24,100,000        $24,380,000     $24,380,000
14    B737-400       24685   May-90   CFM56-3C1     150,000    $25,000,000      $25,000,000        $25,760,000     $25,760,000
15    B737-400       24904   Feb-91   CFM56-3C1     150,000    $26,000,000      $26,000,000        $25,470,000     $25,470,000
16    B737-400       25764   Jun-92   CFM56-3C1     143,500    $26,940,000      $26,940,000        $26,590,000     $26,590,000
17    B737-400       26066   Jun-92   CFM56-3C1     150,000    $27,200,000      $27,200,000        $26,560,000     $26,560,000
18    B737-400       25765   Jul-92   CFM56-3C1     143,500    $26,940,000      $26,940,000        $26,660,000     $26,660,000
19    B737-500       26067   Jun-92   CFM56-3C1     133,500    $20,120,000      $20,120,000        $19,280,000     $19,280,000
20    B747-200       22496   Oct-81   IT9D-7Q       814,000    $29,190,000      $23,990,000        $30,910,000     $25,710,000
21    B757-200Etop   26152   Aug-92   RB211-535E4   255,000    $43,120,000      $40,600,000        $43,660,000     $41,140,000
22    B757-200Etop   26153   Aug-92   RB211-535E4   255,000    $43,060,000      $40,540,000        $43,730,000     $41,210,000
23    B757-200Etop   26158   Feb-93   RB211-535E4   255,000    $45,300,000      $42,500,000        $45,050,000     $42,250,000
24    B767-300ER     24999   Feb-91   PW4060        407,000    $64,740,000      $57,170,000        $65,180,000     $57,610,000
25    B767-300ER     24947   Mar-91   PW4060        407,000    $64,740,000      $57,170,000        $65,260,000     $57,690,000
26    DC-8-71F       46064   Apr-69   CFM56-2C1     325,000    $15,000,000      $15,000,000        $14,990,000     $14,990,000
27    DC-8-71F       46040   May-69   CFM56-2C1     325,000    $14,940,000      $14,940,000        $15,580,000     $15,580,000
28    F100           11341   Aug-91   TAY650-15      98,000    $14,090,000      $12,550,000        $14,010,000     $12,470,000
29    F100           11342   Aug-91   TAY650-15      98,000    $14,030,000      $12,490,000        $14,240,000     $12,700,000
</TABLE>
<PAGE>   6
                                                                 [AIRCRAFT LOGO]

                           ATTACHMENT 1 - AerCo Fleet
                              AISI File A9S003BVO
                          Values as of 18 January 1999

<TABLE>
<CAPTION>
                                                         Half Life            Half Life            Adjusted           Adjusted
                                                         Base Value      Current Market Value     Base Value    Current Market Value
                                                            1999                 1999                1999               1999
No    Type     MSN     DOM     Engine        MTOW       US Dollars           US Dollars          US Dollars         US Dollars

<S>   <C>      <C>     <C>      <C>           <C>        <C>                 <C>                      <C>                <C>
30    F100     11351   Sep-91   TAY650-15      98,000    $ 14,030,000        $ 12,490,000        $ 14,000,000       $ 12,460,000
31    F100     11350   Apr-92   TAY650-15      98,000    $ 15,090,000        $ 13,570,000        $ 15,040,000       $ 13,520,000
32    MD-83    49627   Apr-89   JT8D-219      160,000    $ 21,740,000        $ 18,790,000        $ 22,080,000       $ 19,130,000
33    MD-83    49790   Oct-89   JT8D-219      160,000    $ 21,740,000        $ 18,790,000        $ 22,240,000       $ 19,290,000
34    MD-83    49952   Dec-91   JT8D-219      160,000    $ 23,600,000        $ 20,610,000        $ 23,220,000       $ 20,230,000

TOTALS                                                   $916,290,000        $873,080,000        $919,540,000       $876,330,000
</TABLE>

<PAGE>   1

                                                                   Exhibit 99.9
                              BK Associates, Inc.

                            1295 Northern Boulevard
                           Manhasset, New York 11030
                        (516) 365-6272 -- (516) 365-6287

                                                               January 21, 1999

Mr. Caroline Jones
Aerfi Group plc
Aviation House
Shannon, County Clare
Ireland

Dear Caroline:

In response to your request, BK Associates, Inc. is pleased to provide an update
on our opinion regarding the current maintenance adjusted Current Market Value
(CMV) and Base Value (BV) as well as the half-time BV of the aircraft (Aircraft)
in the AerCo portfolio (Portfolio) which was previously referred to as the
Aircraft Lease Portfolio Securitization (ALPS 94-1) program. The Portfolio
comprises 34 aircraft and our opinion on their current values is tabulated in
the attached Figure 1.

Where appropriate data were available, the CMV and BV include an adjustment to
account for current maintenance status with respect to airframe checks, engine
heavy shop visits and landing gear overhaul. Where data were not available or
too old to be considered reliable, it was assumed that aircraft (or engine) is
at half-time between major maintenance events.

It should be understood that BK Associates has neither inspected the Aircraft
nor their maintenance records, but has relied upon the information provided by
you and in the BK Associates database which includes data on some of the
Aircraft that was obtained for previous appraisals we have conducted on the
Aircraft. The assumptions have been made that all Airworthiness Directives have
been complied with; accident damage has not been incurred that would affect
market values; and maintenance has been accomplished in accordance with a civil
airworthiness authority's approved maintenance program and accepted industry
standards. Deviations from these assumptions can change significantly our
opinion regarding the Aircrafts' values.

According to the International Society of Transport Aircraft Trading's (ISTAT)
definition of base value, to which BK Associates subscribes, base value is the
Appraiser's opinion of the underlying economic value of an aircraft in an open,
unrestricted, stable market environment with a reasonable balance of supply and
demand, and assumes full consideration of its "highest and best use". An
aircraft's Base Value is founded in the historical trend of values and in the
projection of value trends and presumes an arm's
<PAGE>   2
Ms. Caroline Jones
January 21, 1999
Page 2


length, cash transaction between willing, able and knowledgeable parties, acting
prudently, with an absence of duress and with a reasonable period of time
available for marketing, which BK Associates considers to be 12 to 18 months.

The definition of Current Market Value is similar. The quoted current market
value is the appraiser's opinion of the most likely trading price that may be
generated for an aircraft under the market circumstances that are perceived to
exist at the time in question.

As the definition suggests, Base Value is determined from historic and future
value trends and is not influenced by current market conditions. It is often
determined as a function of the original cost of the aircraft, technical
characteristics of competing aircraft, and development of new models.

For most of the aircraft in the Portfolio, there are relatively minor increases
or decreases in the values since the last time we appraised the ALPS 94-1
Portfolio. These are partly the result of the passage of time and further aging
of the aircraft, significant changes in the price of new or replacement aircraft
which affect base value models or changes in the maintenance status. Regarding
maintenance status, some significant changes in the adjusted values can be
attributed to engine status.

Current values are normally based on comparison to recent sales of comparable
aircraft. However, there have been few comparable sales, if any, during the past
year, for which the price was divulged beyond the parties to the transaction.
Among the Aircraft types in the Portfolio, all of the reported transactions of
comparable aircraft during the past year are listed below (Aircraft very much
older or younger are excluded.):

<TABLE>
<CAPTION>

Date      From                 To                   Year   Model       Price    Remark
- ----      ----                 --                   ----   -----       -----    ------
<S>       <C>                  <C>                  <C>    <C>         <C>      <C>
9/1/98    Qantas               PACE                 1981   A300-200F   12.100
11/1/98   Lehman Comm.Paper    Aircraft 373, Inc    1992   A320-231    22.230   Sec. Agre Val.
3/1/98    Aircorp              Southwest            1985   B737-301    20.000   Ageed Val.
4/1/98    ILFC                 AAR                  1989   B737-3Q8    20.100
7/1/98    Bab. & Brn.          Southwest Airlines   1985   B737-317    20.000   SLV
9/1/98    Swedbank             China Southern       1992   B737-3Y9    19.480   Debt Amt
1/1/98    Air India            UPS                  1979   B747-237    18.000
1/1/98    Aero USA             NationsBanc          1968   DC8-71F     15.890
8/1/98    Acft. Int'l Lang     LanChile             1969   DC8-71F     17.500   Agreed Value
9/1/98    Cote D'Ivoire Lang   Flight West          1990   F100        10.000
</TABLE>
<PAGE>   3

                                                             BK Associates, Inc.

Ms. Caroline Jones
January 21, 1999
Page 3

In some cases an actual sale did not occur. Some of the "prices" are loan 
values in refinancings. Sometimes the value given is a stipulated loss value or 
"agreed value" in a lease transaction. While these are not actual sale prices, 
they do give some indication of the value some parties to the transaction 
assign to the aircraft.

In the absence of recent sales, alternative methodologies must be used to
determine CMV. One such methodology is to assess current market conditions and
relate the current value to the base value. Analysis of long term historic value
trends suggest what the value of an aircraft should be based on its age,
original price and competitive specifications in a balanced market. Analysis of
current market conditions then suggests the difference between CMV and BV.

Further, because of appraisals we have conducted, we are increasingly aware of 
transaction prices that have not been publicly divulged. These, of course, 
cannot be included here but they are considered when arriving at our 
conclusions regarding the current market value.

BK Associates, Inc. has no present or contemplated future interest in the
Aircraft, nor any interest that would preclude our making a fair and unbiased
estimate. This appraisal represents the opinion of BK Associates, Inc. and
reflects our best judgment based on the information available to us at the time
of preparation and the time and budget constraints imposed by the client. It is
not given as a recommendation, or as an inducement, for any financial
transaction and further, BK Associates, Inc. assumes no responsibility or legal
liability for any action taken or not taken by the addressee, or any other
party, with regard to the appraised equipment. By accepting this appraisal, the
addressee agrees that BK Associates, Inc. shall bear no such responsibility or
legal liability. This appraisal is prepared for the use of the addressee and
shall not be provided to other parties without the express consent of the
addressee.

                                                Sincerely yours,
                                                
                                                BK ASSOCIATES, INC.
                                                
                                                /s/ John F. Keitz
                                                John F. Keitz
                                                President
                                                ISTAT Certified Senior Appraiser
                                                
JFK/kf
Attachment


<PAGE>   4
                                   Figure 2-1
                         AerCo PORTFOLIO CURRENT VALUES

<TABLE>
<CAPTION> 
                                                           BASE VALUE           CURRENT MKT. VAL
TYPE           SERNUM      DeM       ENGINE             1/2 TIME MT. ADJ.       1/2 TIE MT. ADJ.

<S>            <C>       <C>       <C>                 <C>        <C>          <C>         <C>
B757-2Y0       26153     Aug-92    RB211-535E4         41.150     42.888       41.150      42.888
B737-3Y0       26068     Jun-92    CFM56-3C1           26.150     25.477       26.150      25.477
A300B4-203       240     May-83    CF6-50C2            14.250     14.735       12.825      13.310
B737-3Y0       24465     Aug-89    CFM56-3B1           21.100     21.207       21.345      21.452
B737-3Y0       24677     Mar-90    CFM56-3B1           22.600     23.089       22.862      23.352
B737-48E       25764     Jun-92    CFM56-3C1           27.700     28.291       27.700      28.291
B737-48E       25765     Jul-92    CFM56-3C1           27.700     27.786       27.700      27.786
MD83           49952     Dec-91    JT8D-219            24.700     24.120       24.700      24.120
A320-211          85     Feb-90    CFM56-5A1           24.300     23.979       24.300      23.979
B737-4Y0       24685     May-90    CFM56-3C1           25.141     25.764       25.141      25.764
F100           11342     Aug-91    TAY650-15           14.200     13.939       14.200      13.939
B767-3Y0ER     24999     Feb-91    PW4060              59.350     58.500       59.350      58.500
MD83           49627     Apr-89    JT8D-219            21.500     21.970       21.500      21.970
MD83           49790     Oct-89    JT8D-219            21.800     22.150       21.800      22.150
B757-2Y0       26158     Feb-93    RB211-535E4         42.250     43.051       42.250      43.051
A320-212         299     Apr-92    CFM56-5A3           29.400     29.122       29.400      29.122
A320-231         362     Nov-92    V2500-A1            30.150     30.862       30.150      30.862
B737-4Y0       23868     Oct-88    CFM56-3C1           22.600     23.527       22.600      23.527
A320-212         391     Feb-93    CFM56-5A3           30.900     30.141       30.900      30.141
B737-3Y0       24909     Apr-91    CFM56-3C1           24.900     25.017       24.900      25.017
B737-4Y0       23979     Jan-89    CFM56-3C1           23.068     23.408       23.068      23.408
B737-3Y0       24908     Mar-91    CFM56-3C1           24.900     24.494       24.900      24.494
B737-4Y0       24904     Feb-91    CFM56-3C1           25.771     25.275       25.771      25.275
B737-4Y0       26066     Jun-92    CFM56-3C1           28.013     27.211       28.013      27.211
F100           11341     Aug-91    TAY650              14.200     13.841       14.200      13.841
F100           11350     Apr-92    TAY650              15.250     15.157       15.250      15.157
F100           11351     Sep-91    TAY650              14.500     14.334       14.500      14.334
B767-3Y0ER     24947     Mar-91    PW4060              59.700     57.422       59.700      57.422
B757-2Y0       26152     Aug-92    RB211-535E4         41.150     42.166       41.150      42.166
A320-211         403     Dec-93    CFM56-5A1           30.650     29.462       30.650      29.462
DC8-71F        46064     Apr-69    CFM56-2C1           13.650     14.069       15.000      15.419
B747-283B      22496     Oct-81    JT9D-7Q             34.200     36.127       32.490      34.417
DC8-71F        46040     May-69    CFM56-2C1           13.650     14.734       15.000      16.084
B737-5Y0       26067     Jun-92    CFM56-3C1           19.213     19.995       18.252      19.034
</TABLE>



<PAGE>   1
                                                                   EXHIBIT 99.10

                                                                [AIRCLAIMS LOGO]

Our Ref: 99201/MSH/kw

AerFi Group Plc.                                              21st January, 1999
Aviation House
Shannon
Ireland

Attention: Ms Caroline Jones

Dear Sirs,

                              - AERCO PORTFOLIO -
                    BASE VALUE AND CURRENT MARKET VALUATION
                            AS AT 31ST JANUARY, 1999

Further to the instructions of Ms. Caroline Jones, AerFi Group Plc, we are 
pleased to be able to provide our opinion of the value of each aircraft in the 
portfolio of AerCo, under Base and Current Market Value scenarios. The 
aircraft, each of which is subject to a net operating lease, are as indicated 
in the attached table (ref: 99201/MSH).

Our valuation is based on fleet details as provided by Ms. Jones on 30th 
December 1998, providing the most recent utilisation information available in 
respect of the aircraft and their respective engines, supplemented with 
maintenance and specification data obtained or received on previous occasions 
from Babcock and Brown, GPA Group and GE Capital Aviation Services (GECAS).

The point of valuation is 31st January, 1999.

As requested by AerFi Group Plc, we have provided our value opinions under 
CURRENT MARKET and BASE VALUE scenarios. Airclaims believes it to be VERY 
IMPORTANT that value definitions are understood by all parties and that such 
values are always considered in conjunction with their definitions.

[LOGOS]

                               Airclaims Limited

         Cardinal Point, Newall Road, Heathrow Airport, London TW6 2AS
      Telephone (44) 181 897 1066 Facsimile (44) 181 897 0300 Telex 934679
                           http://www.airclaims.co.uk
       Registered Head Office as above. Registered in England No. 710284,
                            VAT Reg. No. 224 1906 87                           
<PAGE>   2

                                                                [AIRCLAIMS LOGO]

BASE VALUE (to ISTAT Definition)

The Base Value presented below is based on the definition as outlined by the 
International Society of Transport Aircraft Trading (ISTAT). ISTAT's definition 
of Base Value equates in principle to the previously used appraisal term, Fair 
Market Value.

The ISTAT definition is as follows:

A Base Value is the Appraiser's opinion of the underlying economic value of an 
aircraft in an open, unrestricted, stable market environment with a reasonable 
balance of supply and demand, and assumes full consideration of its "highest 
and best use".

An aircraft's Base Value is founded in the historical trend of values and in 
the projection of value trends and presumes an arm's length, cash transaction 
between willing, able and knowledgeable parties, acting prudently, with an 
absence of duress and with a reasonable period of time available for marketing.

In this instance, the Base Value of each aircraft assumes its physical condition
is average for an aircraft of its type and age, but has been adjusted to reflect
a) the actual utilisation and given maintenance status of airframe, engines and
undercarriage where possible (the "Adjusted Base Value") and b) assuming overall
"half-life" maintenance condition.

The Base Value also assumes that each Aircraft is under a maintenance programme 
of international airworthiness standards approved by a civil aviation 
authority, with all airworthiness directives (ADs) and manufacturers service 
bulletins (SBs) performed in compliance with air carrier rules and regulations.

CURRENT MARKET VALUE

In Airclaims' considered opinion the CURRENT MARKET VALUE represents that which 
the aircraft could best achieve under current (i.e. today's) market conditions. 
Under this scenario each value is intended to reflect what might be expected 
from the result of an "arms length, single sale" transaction conducted in an 
orderly manner (for which we consider a period of up to 12 months to come to 
fruition to be reasonable) between a "willing buyer and willing seller". The 
value assumes that each aircraft is free of lease or charge, and free of any 
onerous restrictions in respect of its ownership and title documentation.

As part of our valuation process, we have taken into account recent market 
activity covering open market, financial and lessor sales, the perceived demand 
for the types, their current market acceptability and availability, and have 
considered the views of informed industry sources.

<PAGE>   3
                                                                [AIRCLAIMS LOGO]

Further to the above we have also taken account of the data available to us
regarding the specification of the subject aircraft, and their accumulated
airframe hours and cycles. We have also assumed that the aircraft are in good 
condition with all Airworthiness Directives (ADs) and significant Service 
Bulletins (SBs) complied with.

In this instance, the Current Market Value of each aircraft assumes its 
physical condition is average for an aircraft of its type and age, but has been 
adjusted to reflect the actual utilisation and given maintenance status of 
airframe, engines and undercarriage where possible (the "Adjusted Current 
Market Value") and b) under the assumption that each aircraft is in overall 
"half-life" maintenance conditions (Current Market "Half-Life" Value).

The Current Market Value also assumes that each Aircraft is under a maintenance 
programme of international airworthiness standards approved by a civil aviation 
authority with all airworthiness directives (ADs) and manufacturers service 
bulletins (SBs) performed in compliance with air carrier rules and regulations.

Whilst the tabulated values provided under this assignment are given as single 
figures, it must be borne in mind that the determination of such value involves 
a multiplicity of variables, and that some variation in perceived values must 
be expected due to, for example, any potential inaccuracies in the data 
provided. In this case we consider that a tolerance of +/- 4% may reasonably 
apply to the aforementioned calculated values.

Please note that valuations given by Airclaims are valid only as at the date of 
issue. Subsequent to that date there may be alterations in the world aviation 
market, or in the status and physical condition of the subject aircraft or 
other general factors that may affect Airclaims' value opinion.

I trust the foregoing is satisfactory and to your requirements.

Yours sincerely,

/s/ Edward Pieniazek
    ----------------
    Edward Pieniazek
    Director, Consultancy & Information Services

Encl.
<PAGE>   4
Current Market and Base Values for AerCo Portfolio as of 31st January 1999,
expressed in Million US Dollars

<TABLE>
<CAPTION>

                                                                                                      Market Values    Base Values
Type                  Engines      MSN Operator            YoB    Hours  Cycles   As at MTOW (lbs) Half Life  Adj.  Half Life   Adj.
<S>                   <C>          <C>                     <C>     <C>     <C>     <C>     <C>        <C>     <C>     <C>      <C>

Airbus           CF6-50C2           240 Indian Airlines  Feb-83  31,384  18,024  Sep-98  363,765   $8.35M   $8.88M   $8.70M   $9.22M
 A300-B4-200
Airbus A320-200  CFM56-5A1           85 Air France       Oct-89  16,828  17,676  Oct-98  162,041  $26.65M  $25.65M  $25.81M  $24.81M
Airbus A320-200  CFM56-5A3          299 Premiair         Jan-92  22,553   8,112  Sep-98  166,450  $31.30M  $31.36M  $38.12M  $30.18M
Airbus A320-200  CFM56-5A3          391 Monarch          Dec-92  21,389   8,253  Sep-98  169.757  $32.60M  $32.72M  $31.42M  $31.54M
                                        Airlines
Airbus A320-200  CFM56-5A1          403 Canadian         Jan-93  17,905   6,581  Oct-98  158,731  $32.20M  $31.34M  $30.99M  $30.13M
                                        Airlines
                                        International
Airbus A320-200  V2500-A1           362 Airlines         Sep-92  23,255   8,384  Sep-98  166,450  $32.20M  $32.46M  $31.02M  $31.28M
                                        International
Boeing 737-300   CFM56-3B1        24465 Philippine       Jul-89  18,181  22,102  Oct-98  135,000  $19.73M  $19.74M  $19.13M  $19.14M
                                        Airlines
Boeing 737-300   CFM56-3B1        24677 Philippine       Feb-90  17,106  20,641  Oct-98  135,000  $20.43M  $20.97M  $19.79M  $20.34M
                                        Airlines
Boeing 737-300   CFM56-3C1(23.5)  24908 Sun Express      Feb-91  27,769  12,392  Oct-98  139,500  $23.30M  $22.81M  $22.63M  $22.13M
Boeing 737-300   CFM56-3C1(22)    24909 MALEV            Feb-91  19,881  11,931  Oct-98  139,500  $22.74M  $21.38M  $22.07M  $20.70M
Boeing 737-300   CFM56-3C1(23.5)  26968 China Yannan     May-92  20,174  15,556  Dec-98  139,000  $23.97M  $23.27M  $23.36M  $22.66M
                                        Airlines
Boeing 737-400   CFM56-3C1(23.5)  23868 British Midland  Sep-88  24,756  26,812  Oct-98  143,500  $22.24M  $21.53M  $21.23M  $22.52M
                                        Airways
Boeing 737-400   CFM56-3C1(23.5)  23979 Pegasus Airlines Dec-88  25,184  12,242  Oct-98  143,500  $22.99M  $23.36M  $22.23M  $22.61M
Boeing 737-400   CFM56-3C1(23.5)  24685 Futurs           Apr-90  29,053  14,213  Oct-98  150,000  $24.86M  $24.34M  $24.26M  $23.75M
Boeing 737-400   CFM56-3C1(23.5)  24904 THY - Turkish    Jan-91  20,346  11,901  Aug-98  150,000  $25.37M  $24.70M  $24.65M  $23.99M
                                        Airlines
Boeing 737-400   CFM56-3C1(23.5)  25764 Asiana Airlines  May-92  12,923  18,846  Oct-98  143,500  $25,50M  $26.02M  $24.76M  $25.28M
Boeing 737-400   CFM56-3C1(23.5)  25765 Asiana Airlines  Jan-92  12,617  18,413  Oct-98  143,500  $25.50M  $25.15M  $24.76M  $24.41M
Boeing 737-400   CFM56-3C1(23.5)  26066 THY - Turkish    May-92  18,212   9,495  Aug-98  150,000  $27.11M  $26.36M  $26.37M  $25.63M
                                        Airlines
Boeing 737-500   CFM56-3C1(20)    26067 Air Pacific      May-92  20,903   9,770  Oct-98  133,500  $22.23M  $20.75M  $21.56M  $20.08M
Boeing 747-200D  JT9D-7Q          22496 Tower Air        Aug-81  51,591  10,879  Oct-98  814,000  $23.67M  $26.79M  $25.83M  $28.95M
Boeing 757-200   RB211-535E4      26152 Avianca          Jul-92  20,103   8,129  Oct-98  255,000  $37.27M  $38.39M  $36.09M  $37.21M
Boeing 757-200   RB211-535E4      26153 China Southwest  Jul-92  14,727   8,554  Oct-98  255,000  $37.27M  $39.47M  $36.09M  $38.28M
                                        Airlines
Boeing 757-200   RB211-535E4      26158 Air 2000         Jan-93  23,603   7,269  Oct-98  255,000  $18.52M  $39.48M  $37.45M  $38.41M
Boeing 767-300ER PW4060           24947 LANChile         Jan-91  35,574   8,830  Oct-98  407,000  $55.87M  $55.59M  $57.12M  $56.84M
Boeing 767-300ER PW4860           24999 Spanair          Jan-91  35,122   7,801  Nov-98  407,000  $56.17M  $56.38M  $57.42M  $57.63M
Douglas DC-8-71F CFM56-2C1        46840 LANChile         Mar-69  69,717  27,234  Jul-98  325,000  $14.50M  $16.17M  $15.59M  $17.26M
Douglas DC-8-71F CFM56-2C1        46064 Air Transport    May-69  78,000  31,297  Sep-98  325,000  $14.50M  $14.97M  $15.59M  $16.06M
                                        International
Fokker 100       RB183 Tay 650-15 11341 TAM Brasil       Jun-91  13,311  13,053  Oct-98   98,000  $13.52M  $12.96M  $15.19M  $14.63M
Fokker 100       RB183 Tay 650-15 11342 Portugalia       Jun-91  13,805  13,198  Oct-98   98,000  $13.52M  $13.64M  $15.19M  $15.31M
Fokker 100       RB183 Tay 650-15 12350 TAM Brasil       Aug-91  16,265  17,300  Oct-98   98,000  $13.62M  $13.42M  $15.29M  $15.09M
Fokker 100       RB183 Tay 650-15 11351 TAM Brasil       Sep-91  17,021  17,179  Oct-98   98,000  $13.52M  $13.29M  $15.19M  $14.96M
MD-83            JT8D-219         49627 Spanair          Feb-89  34,470  16,701  Oct-98  160,000  $17.80M  $17.89M  $17.34M  $17.43M
MD-83            JT8D-219         49790 Spanair          Aug-89  31,958  15,480  Oct-98  160,000  $18.05M  $18.41M  $17.59M  $17.95M
MD-83            JT8D-219         49952 Far Eastern      Oct-91  23,077  16,366  Oct-98  160,000  $19.87M  $19.87M  $19.40M  $18.61M
                                        Air Transport
</TABLE>


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