POLARIS AIRCRAFT INCOME FUND III
8-K, 1997-06-12
EQUIPMENT RENTAL & LEASING, NEC
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                UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                           ---------------------------


                                    FORM 8-K
                           ---------------------------



                                 CURRENT REPORT

                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


         Date of report (date of earliest event reported): May 28, 1997

                           ---------------------------


                          Commission File No. 33-10122
                           ---------------------------




                        POLARIS AIRCRAFT INCOME FUND III,
                        A California Limited Partnership


                        State of Organization: California
                   IRS Employer Identification No. 94-3023671
         201 Mission Street, 27th Floor, San Francisco, California 94105
                           Telephone - (415) 284-7400














                       This document consists of 6 pages.




<PAGE>

Item 2.

On May  28,  1997,  Polaris  Investment  Management  Corporation  (the  "General
Partner"  or  "PIMC"),  on  behalf  of  Polaris  Aircraft  Income  Fund III (the
"Partnership"),  executed definitive  documentation for the purchase of 8 of the
Partnership's  18 remaining  aircraft (the  "Aircraft") and certain of its notes
receivables by Triton Aviation  Services III LLC, a special purpose company (the
"Purchaser").  The final  closings  for the  purchase of 3 of the 8 Aircraft had
occurred  as of June 6,  1997.  The  Purchaser  is  managed  by Triton  Aviation
Services,  Ltd. ("Triton  Aviation"),  a privately held aircraft leasing company
which was formed in 1996 by Triton  Investments,  Ltd., a company which has been
in the marine cargo container  leasing business for 17 years and is diversifying
its portfolio by leasing commercial aircraft.  Each Aircraft was sold subject to
the existing leases.

The General Partner's Decision To Approve The Transaction

In  determining  whether  the  transaction  was in  the  best  interests  of the
Partnership  and its  unitholders,  the General Partner  evaluated,  among other
things, the risks and significant expenses associated with continuing to own and
remarket  the  Aircraft  (many of which were subject to leases that were nearing
expiration).  The General Partner  determined that such a strategy could require
the  Partnership  to  expend a  significant  portion  of its cash  reserves  for
remarketing  and that  there was a  substantial  risk that this  strategy  could
result  in the  Partnership  having  to  reduce  or  even  suspend  future  cash
distributions  to limited  partners.  The  General  Partner  concluded  that the
opportunity  to sell the Aircraft at an attractive  price would be beneficial in
the present  market  where  demand for Stage II aircraft  is  relatively  strong
rather than attempting to sell the aircraft  "one-by-one"  over the coming years
when the demand for such Aircraft might be weaker.  During the months of intense
negotiations,  GE Capital  Aviation  Services,  Inc.  ("GECAS"),  which provides
aircraft  marketing and management  services to the General  Partner,  sought to
obtain the best price and terms  available for these Stage II aircraft given the
aircraft market and the conditions and types of planes owned by the Partnership.
Both the General  Partner and GECAS  approved the sale terms of the Aircraft (as
described  below)  as being  in the best  interest  of the  Partnership  and its
unitholders  because  both  believe  that this  transaction  will  optimize  the
potential cash  distributions to be paid to limited partners.  To ensure that no
better offer could be obtained, the terms of the transaction negotiated by GECAS
included a "market-out"  provision  that  permitted the  Partnership to elect to
accept an offer for all (but no less than all) of the assets to be sold by it to
the Purchaser on terms which it deemed more  favorable,  with the ability of the
Purchaser to match the offer or decline to match the offer and be entitled to be
compensated  in an  amount  equal to 1 1/2% of the Purchaser's proposed purchase
price.  The Partnership did not receive any other offers and,  accordingly,  the
General Partner believes that a valid market check has occurred  confirming that
the terms of this  transaction  were the most  beneficial  that  could have been
obtained.

The Terms of the Transaction

The total purchase price (the "Purchase  Price") to the Purchaser is $10,947,000
which is  allocable  to the  Aircraft  and to certain  notes  receivable  by the
Partnership.  The  Purchaser  is not  receiving  any of the  Partnership's  cash
reserves,  estimated to be approximately  $15,800,000 after the anticipated July
cash distribution is made to limited partners. The Purchaser paid into an escrow
account  $1,233,289 of the Purchase Price in cash at the closing and delivered a
promissory  note (the  "Promissory  Note")  for the  balance of  $9,713,711.  As
described  below,  this transaction will enable the Partnership to distribute to
limited partners the cash down payment received on the sale of the Aircraft. The
Partnership intends to make this distribution as part of its July 1997 quarterly
distribution to limited partners.

The  Promissory  Note is to be repaid  beginning  June 30, 1997 in 28  quarterly
installments  of principal  and interest in the amount of $476,425 over a period
of seven  years  bearing  interest  at a rate of 12% per  annum  with a  balloon
principal payment in the amount of $1,770,917 due on March 31, 2004.


                                        2
<PAGE>

The Purchaser has the right to voluntarily  prepay the Promissory  Note in whole
or in part at any time without  penalty.  In addition,  the  Promissory  Note is
subject to mandatory partial prepayment in certain specified instances.

Under the terms of the transaction, the Purchaser's assets, which are limited to
the  Aircraft,  including any income or proceeds  therefrom,  and any funds made
available to Purchaser under the working capital line described below constitute
the sole  source of payments  under the  Promissory  Note.  Although no security
interest over the Aircraft or the leases is granted in favor of the Partnership,
the equity interests in the Purchaser have been pledged to the  Partnership.  In
connection  with  that  pledge,  the  Purchaser  is  prohibited  from  incurring
indebtedness other than (i) the Promissory Note; (ii) deferred taxes not yet due
and  payable;  (iii)  indebtedness  incurred  to hushkit  Aircraft  owned by the
Purchaser;  (iv) demand loans to another SPC (defined below) at a market rate of
interest;  and (v) debt to trade  creditors  incurred in the ordinary  course of
business. In addition,  the Purchaser undertakes to keep the Aircraft and leases
free of any lien, security interest or other encumbrance other than (i) inchoate
taxes and materialmen's liens and the like, (ii) in the event that the Purchaser
elects to install  hushkits on any  Aircraft,  secured debt to the extent of the
full cost of such hushkit and other  hushkits  acquired  with  proceeds from the
same loan facility;  (iii) liens lessees are customarily permitted to incur that
are  required  to be  removed.  The  Purchaser  has the right to sell any of the
Aircraft without the consent of the Partnership,  except that the  Partnership's
consent  would be  required  in the event  that the sale  price is less than the
portion of the outstanding  balance of the Promissory Note which is allocable to
the Aircraft in question and the  Purchaser  does not have  sufficient  funds to
make up the  difference.  In the event that any of the  Aircraft are sold by the
Purchaser,  the  Promissory  Note is subject to a  mandatory  prepayment  of the
portion of the Promissory Note which is allocable to the Aircraft sold.

Polaris  Aircraft  Income Fund II,  Polaris  Aircraft  Income  Fund IV,  Polaris
Aircraft  Income  Fund V and  Polaris  Aircraft  Income  Fund VI have  also sold
certain  aircraft  assets to separate  special  purpose  companies  under common
management with the Purchaser  (collectively,  together with the Purchaser,  the
"SPC's") on terms  similar to those set forth above,  with the  exception of the
Polaris Aircraft Income Fund VI aircraft, which were sold on an all cash basis.

Under the terms of the  transaction,  the Purchaser's  Manager has undertaken to
make  available a working  capital line to the Purchaser of up to  approximately
$956,000 to fund operating  obligations of the Purchaser.  This working  capital
line is guaranteed by Triton  Investments,  Ltd., the parent of the  Purchaser's
Manager and such  guarantor  provided  the  Partnership  with a copy of its most
recent  balance  sheet  showing  a  consolidated  net  worth  (net  of  minority
interests)  of at least  $150-million  at December 31, 1996.  Provided  that the
Purchaser is not in default in making  payments due under the Promissory Note to
the Partnership,  the Purchaser is permitted to dividend to its equity owners an
amount  not to  exceed  approximately  $26,000  per  month.  The  Purchaser  may
distribute  additional  dividends  to the  equity  owners  to the  extent of the
working  capital  advances  made by the  Purchaser's  Manager  provided that the
working capital line available to the Purchaser will be deemed  increased to the
extent of such dividends.

The   Purchaser   purchased   the  Aircraft   effective  as  of  April  1,  1997
notwithstanding  the actual closing date.  The  utilization of an effective date
facilitated the determination of rent and other allocations between the parties.
The Purchaser has the right to receive all income and proceeds,  including rents
and  receivables,  from the Aircraft  accruing from and after April 1, 1997, and
the Promissory Note commenced bearing interest as of April 1, 1997.



                                        3
<PAGE>

Neither PIMC nor GECAS will receive a sales  commission in  connection  with the
transaction. In addition, PIMC will not be paid a management fee with respect to
the  collection  of the  Promissory  Note.  Neither PIMC nor GECAS or any of its
affiliates  holds any  interest in Triton  Aviation or any of Triton  Aviation's
affiliates.  John Flynn, the current President of Triton Aviation, was a Polaris
executive  until  May 1996 and has over 15 years  experience  in the  commercial
aviation  industry.  At the time  Mr.  Flynn  was  employed  at PIMC,  he had no
affiliation with Triton Aviation or its affiliates.


With  respect  to the 5  Aircraft  that  have  not yet been  transferred  to the
Purchaser  as of  June 6,  1997,  the  Partnership  has  agreed  to  obtain  the
Purchaser's  consent before undertaking any significant action, such as making a
material modification or waiving a default under a lease.

Anticipated July Cash Distribution

The Partnership  anticipates  making a cash distribution to the limited partners
of approximately  $2,975,000  ($5.95 per limited  partnership  unit) by July 30,
1997. Such distribution would be comprised of (i) the cash down payment received
from the sale of the Aircraft, less estimated transaction expenses (representing
approximately  $2.20 per limited  partnership  unit);  (ii) the Promissory  Note
payment due from the Purchaser on June 30, 1997 (representing approximately $.85
per limited partnership unit); and (iii) cash generated from operations which is
primarily  from the 10 aircraft  leased to Trans World  Airlines,  Inc.  ("TWA")
(representing  approximately  $2.90 per limited partnership unit). The foregoing
anticipated  distribution is based on the assumptions  that the closings for all
the  Aircraft  being sold to the  Purchaser  occur  prior to July 1,  1997,  the
Partnership timely receives all payments due from the Purchaser, timely receives
all payments due from TWA under its lease of the 10 remaining aircraft (the "TWA
Leases")  and TWA  experiences  no  material  adverse  change in its  ability to
perform  its  obligations  under  the TWA  Leases,  and the  Partnership  incurs
estimated   operating  and  administrative   expenses   (including  expenses  in
connection with the transaction) of approximately $126,000 for the quarter ended
June 30,  1997.  The  Partnership's  estimated  cash  distributions  to  limited
partners   constitutes   forward  looking   information  based  upon  the  above
assumptions that may, for any number of reasons, not occur.  Accordingly,  there
can be no assurance that the  Partnership  will make a cash  distribution in the
amount anticipated.

Estimated Cash Reserves

The Partnership  estimates its cash reserves will be  approximately  $15,800,000
($28.44 per limited  partnership  unit) after the cash  distribution  to limited
partners  anticipated  to be made in July  1997.  PIMC has  determined  that the
Partnership maintain these cash reserves as a prudent measure to insure that the
Partnership  has  available  funds in the event that the  aircraft  presently on
lease to TWA require  remarketing,  the Purchaser  defaults under the Promissory
Note, and for other  contingencies  including  expenses of the Partnership.  The
Partnership's  cash  reserves  will be monitored and may be revised from time to
time as further information becomes available in the future.






                                        4
<PAGE>

Item 7.      Financial Statements, Pro Forma Financial Information and Exhibits.

    a)       Financial Statements.              None

    b)       Pro Forma Information.             None

    c)       Exhibits.

              2.1      Purchase, Assignment and Assumption Agreement
              2.2      Escrow Agreement
              2.3      Pledge and Security Agreement
              2.4      Keep Well Agreement
              2.5      Promissory Note
              2.6      Guaranty (Keep Well)
              2.7      Guaranty (SPV Indebtedness)


                                        5
<PAGE>



                                    SIGNATURE



Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.

                                     POLARIS AIRCRAFT INCOME FUND III
                                     (Registrant)
                                     By:  Polaris Investment
                                          Management Corporation,
                                          General Partner




June 6, 1997                              By: /S/Marc A. Meiches
- -----------------------                      ---------------------------
                                              Marc A. Meiches
                                              Chief Financial Officer
                                              (principal financial officer and
                                              principal accounting officer of
                                              Polaris Investment Management
                                              Corporation, General Partner of
                                              the Registrant)


                                        6




================================================================================


                  PURCHASE, ASSIGNMENT AND ASSUMPTION AGREEMENT


                                   dated as of

                                  April 1, 1997

                                     between

                        POLARIS AIRCRAFT INCOME FUND III

                                   as Assignor

                                       and

                        TRITON AVIATION SERVICES III LLC

                                   as Assignee


================================================================================

<PAGE>








                                TABLE OF CONTENTS

                                                                         Page
                                                                         ----

SECTION 1.          Definitions..........................................  1

SECTION 2.          Sale and Assignment.................................. 10

SECTION 3.          Purchase and Assumption.............................. 11

SECTION 4.          Purchase Price....................................... 11
         (a)        Payment of Purchase Price............................ 11
         (b)        Transfer of Aircraft Income and Lessee Deposits...... 12
         (c)        First Effective Date; Mop-Up Date.................... 12
         (d)        Settlement of Aircraft Income and Lessee Deposits.... 13

SECTION 5.          Representations and Warranties of Assignor;
                    Limitation of Warranty; Covenant with Respect to
                    Pre-Closing Actions.................................. 15
         5.1        Representations and Warranties of Assignor........... 15
         (a)        Partnership Organization, Etc........................ 15
         (b)        Due Authorization; Non-Contravention................. 15
         (c)        Due Execution and Delivery; Enforceability........... 15
         (d)        Event of Default..................................... 16
         (e)        Total Loss........................................... 16
         (f)        Taxes................................................ 16
         (g)        Litigation........................................... 17
         (h)        Encumbrances......................................... 17
         (i)        Brokers' Fees........................................ 17
         (j)        Operative Agreements................................. 18
         (k)        Title to Transferred Interests....................... 18
         5.2  Supplements to Schedules; Post-Signing Information.  ...... 18
         5.3        Limitation of Warranty............................... 18
         5.4        Actions with Respect to Transferred Interests........ 19

SECTION 6.          Representations and Warranties of Assignee;
                    Access Covenant...................................... 20
         6.1        Representations and Warranties of Assignee........... 20
         (a)        LLC Organization, Etc................................ 20
         (b)        Due Authorization; Non-Contravention................. 20
         (c)        Due Execution and Delivery; Enforceability........... 21
         (d)        Litigation........................................... 21
         (e)        Compliance with Operative Agreements................. 21



                                        i



<PAGE>








         (f)        Non-Airline.......................................... 21
         (g)        Brokers' Fees........................................ 21
         (h)        Acquisition For Own Account.......................... 22
         6.2        Access Covenant...................................... 22

SECTION 7.          Conditions Precedent to the Obligations of Assignor.. 22
         (a)        Purchase Price....................................... 22
         (b)        Affidavit of Limited Control by a Non-U.S. Citizen... 22
         (c)        Escrow Agreement..................................... 23
         (d)        TASL "Keep Well" Agreement........................... 23
         (e)        TIL Keep Well Guaranty and Loan Guaranty............. 23
         (f)        Assignee Security Agreement.......................... 23
         (g)        Approvals and Consents............................... 23
         (h)        Due Authorization, Execution and Delivery............ 24
         (i)        Representations and Warranties....................... 24
         (j)        Organizational and Authorization Matters............. 24
         (k)        Illegality; No Proceedings........................... 25
         (l)        No Total Loss........................................ 25
         (m)        Opinions............................................. 26
         (n)        Location of Aircraft................................. 26
         (o)        TIL Balance Sheets................................... 26
         (p)        Other Instruments and Documents; Additional
                    Information.......................................... 26
         (q)        Outside Date......................................... 26
         (r)        No Pending Superior Proposal......................... 27

SECTION 8.          Conditions Precedent to the Obligations of Assignee.. 27
         (a)        Leases and Trust Agreements.......................... 27
         (b)        Due Authorization, Execution and Delivery............ 27
         (c)        Representations and Warranties....................... 27
         (d)        Schedules ........................................... 27
         (e)        Partnership Authorization Matters.................... 28
         (f)        Illegality; No Proceedings........................... 28
         (g)        Approvals and Consents............................... 29
         (h)        No Total Loss........................................ 29
         (i)        Opinions............................................. 29
         (j)        Location of Aircraft................................. 29
         (k)        Other Instruments and Documents; Additional
                    Information.......................................... 30
         (l)        Outside Date......................................... 30

SECTION 9.          Payments............................................. 30




                                       ii



<PAGE>








SECTION 10.         Certain Notices...................................... 30

SECTION 11.         Superior Proposal.................................... 31

SECTION 12.         Further Assurances................................... 32

SECTION 13.         Taxes and Indemnities................................ 32
         (a)        Transfer Taxes....................................... 32
         (b)        Notice of IRS Reports................................ 33
         (c)        Assignor's Indemnity................................. 33
         (d)        Assignee's Indemnity................................. 34
         (e)        Survival of Representations and Warranties........... 35

SECTION 14.         Indemnification Procedure............................ 35

SECTION 15.         Termination.......................................... 37

SECTION 16.         Miscellaneous........................................ 38
         (a)        Notices.............................................. 38
         (b)        Headings............................................. 39
         (c)        References........................................... 39
         (d)        GOVERNING LAW........................................ 39
         (e)        Severability......................................... 39
         (f)        Amendments in Writing................................ 39
         (g)        Expenses............................................. 40
         (h)        Execution in Counterparts............................ 40
         (i)        Entire Agreement..................................... 40
         (j)        Exhibits............................................. 40
         (k)        Assignment and Successors............................ 40
         (l)        Confidentiality...................................... 41





                                       iii



<PAGE>








EXHIBITS

Exhibit A           --     Form of Promissory Note
Exhibit B           --     Form of TASL Keep Well
Exhibit C-1         --     Form of TIL Keep Well Guaranty
Exhibit C-2         --     Form of TIL Loan Guaranty
Exhibit D           --     Form of Pledge and Security Agreement
Exhibit E           --     Form of SPV Provisions


SCHEDULES

Schedule 1                 --       Aircraft
Schedule 2                 --       Leases
Schedule 3                 --       Foreign Aircraft Engines
Schedule 4                 --       Other Operative Agreements
Schedule 4(a)              --       Purchase Price
Schedule 5                 --       Owner Trustees
Schedule 5(b)              --       Consents
Schedule 5(d)              --       Assignor Claims
Schedule 5(g)              --       Pending Litigation
Schedule 5(h)              --       Liens
Schedule 5(j)              --       Missing Documents
Schedule 6                 --       Trust Agreements
Schedule 7                 --       Unfunded Commitments




                                       iv



<PAGE>








                    This PURCHASE,  ASSIGNMENT AND ASSUMPTION  AGREEMENT (as the
same  may  be  amended,  modified  or  supplemented  from  time  to  time,  this
"Agreement"),  dated as of April 1, 1997,  is by and  between  POLARIS  AIRCRAFT
INCOME  FUND III, a  California  limited  partnership  ("Assignor"),  and TRITON
AVIATION SERVICES III LLC, a California limited liability company ("Assignee").

                              W I T N E S S E T H:

                    WHEREAS, Assignor desires to sell and assign to Assignee and
Assignee  desires to purchase and assume from Assignor all of Assignor's  right,
title and interest in and to the Transferred Interests;

                    NOW,  THEREFORE,  in consideration of the foregoing premises
and the mutual covenants and agreements of the parties  contained herein and for
other good and  valuable  consideration,  the receipt and  adequacy of which are
hereby acknowledged, Assignor and Assignee agree as follows:


SECTION 1.          Definitions

                    In addition to the terms defined elsewhere herein, when used
in this Agreement, the following terms have the meanings indicated below:

                    "Act"  means  Part A of  subtitle  VII of title  49,  United
States Code.

                    "actual  knowledge"  of  any  Person,  means  the  conscious
awareness of facts or other  information by any director,  officer,  employee or
agent of such  Person,  in either  such case,  who is (i)  actively  involved in
negotiating the transactions contemplated by this Agreement or (ii) responsible,
in  the  ordinary  course,  for  administering,   on  behalf  of  Assignor,  the
transactions contemplated by the Operative Agreements.

                    "Affiliate"  means,  with  respect to any  Person,  (i) each
Person that, direct ly or indirectly,  owns or controls, whether beneficially or
as a  trustee,  guardian  or other  fiduciary,  20% or more of the Stock  having
ordinary  voting power in the election of direc tors or managers of such Person,
(ii) each Person that controls, is controlled by or is under common control with
such  Person or any  Affiliate  of such  Person and (iii) each of such  Person's
officers,  directors,  members, joint venturers and partners. For the purpose of
this  definition,  "control" of a Person shall mean the possession,  directly or
indirectly,  of the power to direct or cause the direction of its  management or
policies,  whether  through the ownership of voting  securities,  by contract or
otherwise.



                                        1



<PAGE>









                    "After-Tax  Basis"  means on a basis  such that any  payment
received or deemed to have been received by any Person shall be  supplemented by
a further amount paid to that Person,  so that the recipient is held harmless on
an  after-Tax  basis from all Taxes  (calculated  with  respect  to the  highest
applicable  tax rate and taking into account any related  credits or  deductions
allowed to the recipient of such payment in respect of the indemnified  matters)
resulting from the receipt (actual or  constructive)  of such payments and where
the indemnitee is treated as a partnership for federal income tax purposes,  the
"highest  applicable tax rate" means the highest  applicable federal tax rate in
effect for individuals at the time the indemnity payment is made plus 6%.

                    "Agreement"  shall have the  meaning  assigned  to it in the
preamble hereof.


                    "Aircraft"  means the aircraft more fully described on Parts
A and B of  Schedule  1  attached  hereto  and,  with  respect  to each  Foreign
Aircraft,  shall  include (i) any and all Parts  installed on or attached to any
such Foreign Aircraft as of the Effective Time relating to such Foreign Aircraft
(subject to any  pooling,  replacement  or  exchange  rights  arising  under the
Operative  Agreements  relating to such  Foreign  Aircraft),  (ii) all  Aircraft
Documents  relating to such Foreign Aircraft,  (iii) the Engines and (iv) to the
extent assignable by Assignor,  all warranties of manufacturers or other vendors
of such Foreign  Aircraft,  Engines or Parts relating thereto that are in effect
on the Effective Date relating to such Foreign Aircraft.

                    "Aircraft Documents" mean, with respect to any Aircraft, all
records,  logs,  technical  data and  manuals  relating  to the  maintenance  or
operation of such Aircraft which are owned by Assignor.

                    "Aircraft  Income"  means,  with  respect  to a  Transferred
Interest, all income, scheduled rental payments, payments in respect of fees due
to Assignor  or the Owner  Trustee and  proceeds  of such  Transferred  Interest
earned on or after April 1, 1997,  but shall not be deemed to include any Lessee
Deposit or Reserved Rights associated with such Transferred Interest.

                    "Allocable  Portion  Percentage"  means, with respect to any
Aircraft,  the amount  obtained by dividing the Appraised Value of such Aircraft
(determined  immediately  before  such  Aircraft  suffered  a Total Loss or such
Aircraft is otherwise  deleted from this  Agreement) by the sum of the Appraised
Values of all the Aircraft (determined at the same time).

                    "Ancillary  Agreements" mean,  collectively,  the Promissory
Note,  the Keep Well, the Keep Well  Guaranty,  the Loan Guaranty,  the Security
Agreement,  the Assignment and Assumption  Agreements and all other  agreements,



                                        2



<PAGE>








instruments,   documents  and  certificates,   including,   without  limitation,
consents,  assignments,  contracts,  financing  statements and all other written
matters  whether  now or  hereafter  executed  by or on  behalf of  Assignor  or
Assignee or any of their respective  Affiliates and delivered in connection with
this Agreement or the transactions contemplated hereby.

                    "Appraised Value" means,  with respect to any Aircraft,  the
most recent  semi-annual  generic  current  fair market value of aircraft of the
same type, age, gross weight and configuration,  including,  without limitation,
engine type and hushkit  status,  published by Avitas  Aircraft  Appraisal  Inc.
without adjustment for the maintenance "half-time" condition of such Aircraft.

                    "Assignee"  shall  have the  meaning  assigned  to it in the
preamble hereof.

                    "Assignee Acceptance Notice" shall have the meaning assigned
to it in Section 11(c) hereof.

                    "Assignee Indemnitees" shall have the meaning assigned to it
in Section 13(c) hereof.

                    "Assignment  and Assumption  Agreement"  shall mean (i) each
Assignment and Assumption  Agreement  (FAA),  executed and delivered by Assignor
and  Assignee  at  the  applicable   Effective   Time,  in  form  and  substance
satisfactory to Assignee and Assignor and (ii) each Novation Agreement, executed
and delivered by Assignor and Assignee at the applicable Effective Time, in form
and substance satisfactory to Assignee and Assignor.

                    "Assignor"  shall  have the  meaning  assigned  to it in the
preamble hereof.

                    "Assignor Indemnitees" shall have the meaning assigned to it
in Section
13(d) hereof.

                    "Assumed Liabilities" mean, with respect to each Transferred
Interest, (i) all of the obligations and liabilities of Assignor relating to the
applicable  Trust Estate and under the applicable  Trust Agreement and all other
Operative  Agreements relating to such Trust Estate or such Transferred Interest
to the extent arising from acts, omissions, events or circumstances occurring or
accruing  on or  after  the  applicable  Effective  Time  for  such  Transferred
Interest, (ii) all Deposit Liabilities relating to such Transferred Interest and
(iii) all Unfunded Commitments relating to such Transferred Interest.

                    "Business  Day"  means  any day  that is not a  Saturday,  a
Sunday or a day on which  banks are  required or  permitted  to be closed in the
States of California or New York.


                                        3



<PAGE>









                    "CAA" means the United Kingdom Civil Aviation Authority.

                    "Cash  Account"  shall have the  meaning  assigned  to it in
Section 4(a) hereof.

                    "Citizen of the United  States"  means Citizen of the United
States as defined in Section 40102(a)(15) of the Act and in the FAA Regulations.

                    "Claim  Notice"  shall have the  meaning  assigned  to it in
Section 14(a) hereof.

                    "Damages"  means,  in respect of any obligation to indemnify
any Person pursuant to the terms of this Agreement,  any and all losses, claims,
damages,  liabilities,  obligations,  actions,  suits,  judgments,  settlements,
awards,  reasonable and documented  out-of-pocket costs, expenses and attorneys'
fees but shall exclude any consequential,  expectancy or speculative  Damages or
any Damages based on a claim of lost profits or opportunities.

                    "Daylight  Effective  Time"  means any  Effective  Time that
occurs on a Business  Day during the hours of 9:30 a.m.  and 5:00 p.m.  EDT, New
York City time.

                    "Deposit  Liabilities"  mean,  with  respect  to any  Lessee
Deposit  transferred to Assignee  pursuant to this Agreement,  all  liabilities,
obligations  and duties owed by Assignor or any Owner Trustee to a Lessee or any
assignee of or successor to such Lessee  relating to, based on or arising out of
such Lessee  Deposit,  whether  known or unknown,  contingent  or  absolute,  or
arising  before,  on or after  the  Effective  Time  applicable  to such  Lessee
Deposit.

                    "Effective  Time"  means,  subject to the final  sentence of
this  definition,  each  date and  time on which  any  Transferred  Interest  is
delivered by Assignor to Assignee and  accepted by Assignee in  accordance  with
the terms of this  Agreement  as  specified  in the  Assignment  and  Assumption
Agreement with respect to such Transferred  Interest.  Each Transferred Interest
may be delivered by Assignor to Assignee and accepted by Assignee in  accordance
with the terms hereof and the terms of the applicable  Assignment and Assumption
Agreement  independently  of any other  Transferred  Interest  and at  different
Effective  Times.  Notwithstanding  the  foregoing,  the Effective Time for each
Transferred  Interest assigned to Assignee shall be deemed,  with respect to the
allocation of Aircraft Income as between  Assignor and Assignee (but not for any
other purpose), to be April 1, 1997.

                    "Engine"  means  each  of  the  engines   identified  as  to
manufacturer, type and manufacturer serial number on Schedule 3 hereto together,




                                        4



<PAGE>








in each case,  with any and all Parts  incorporated  or installed in or attached
thereto  as of the  Effective  Time  relating  to such  Engine  (subject  to any
pooling,  replacement or exchange rights arising under the Operative  Agreements
relating to such Engine).

                    "Escrow  Agent"  means the escrow  agent (and any  financial
institution that succeeds such escrow agent) pursuant to the terms of the Escrow
Agreement.

                    "Escrow Agreement" means an Escrow Agreement among Assignor,
Assignee and the Escrow  Agent,  in form and substance  satisfactory  to each of
them.

                    "FAA"  means  the  Federal  Aviation  Administration  of the
United  States or any  Government  Entity  succeeding  to the  functions  of the
Federal Aviation Administration.

                    "Foreign   Aircraft"  means,   collectively,   the  Aircraft
described on Part B of Schedule 1.

                    "Government Entity" means (a) any federal, state, provincial
or similar  government,  and any body,  board,  department,  commission,  court,
tribunal,  authority,  agency or other instrumentality of any such government or
otherwise  exercising any executive,  legislative,  judicial,  administrative or
regulatory  functions  of such  government  or (b) any other  government  entity
having jurisdiction over any matter contemplated by the Operative  Agreements or
relating to the  observance  or  performance  of the  obligations  of any of the
parties to the Operative Agreements.

                    "Indemnified Party" shall have the meaning assigned to it in
Section 14(a) hereof.

                    "Indemnitor"  shall  have  the  meaning  assigned  to  it in
Section 14(a) hereof.

                    "IRS" means the Internal  Revenue  Service or any Government
Entity succeeding to the functions of the Internal Revenue Service.

                    "Keep Well" shall have the meaning assigned to it in Section
7(d) hereof.

                    "Keep Well Guaranty"  shall have the meaning  assigned to it
in Section 7(e) hereof.

                    "Leases" mean, collectively, the Leases listed on Schedule 2
attached  hereto,  as the same may have been amended,  supplemented  or modified
from time to time.



                                        5



<PAGE>








                    "Lessee  Deposit"  means any security  deposit,  maintenance
reserve or other funds held by Assignor or any Owner Trustee as security for the
performance  by a Lessee of any of its  obligations  under a Lease or any of the
Operative  Agreements relating to such Lease (including any interest or earnings
on any such funds  which,  pursuant to such Lease or such  Operative  Agreements
relating to such Lease, are for the account or the benefit of the Lessee).

                    "Lessees" mean, collectively, the Persons listed on Schedule
1 attached hereto.

                    "Lien" means any  mortgage,  pledge,  lien,  charge,  claim,
encumbrance,  lease or security interest  affecting the title to or any interest
in property.

                    "Loan  Guaranty"  shall have the  meaning  assigned to it in
Section 7(e) hereof.

                    "Loss of Title"  means,  with respect to any  Aircraft,  the
condemnation, confiscation, appropriation or seizure of, or requisition of title
to such Aircraft by any Government Entity;  provided,  however, that requisition
of the use of an Aircraft  shall not constitute a Loss of Title unless there has
also been a requisition of title to such Aircraft by a Governmental Entity.

                    "Mop-Up Date" means the seventh (7th) Business Day after the
Start Date; provided,  however, that if, on the seventh (7th) Business Day after
the Start Date,  Assignee  gives  notice to Assignor  that an Aircraft  which is
subject of a Transferred Interest not yet transferred to Assignee (i) is located
in a jurisdiction  that is unacceptable to Assignee and (ii) cannot be relocated
to an  acceptable  jurisdiction  because  either (x) such Aircraft is physically
unable to be so  relocated  or (y) the Lessee of such  Aircraft  has  refused to
cooperate  in  relocating  it,  then in such case  "Mop-Up  Date" shall mean the
earlier of (A) the thirtieth (30th) day following the seventh (7th) Business Day
after the Start Date or (B) June 30, 1997.

                    "Offering  Party"  means  any  Person  making  a  bona  fide
inquiry,  offer or  proposal  to acquire,  directly  or  indirectly,  (a) all or
substantially  all of the assets  subject to the Trust  Agreements or (b) all or
substantially all of the Transferred Interests or (c) a combination thereof.

                    "Operative  Agreements"  means,  collectively,  each  of the
Leases,  the  Trust  Agreements,  the tax  indemnity  agreements  and the  other
agreements  listed on  Schedule  4  attached  hereto,  as the same may have been
amended, supplemented or modified from time to time.

                                       6

<PAGE>








                    "Outside  Date"  shall have the  meaning  assigned  to it in
Section 7(g) hereof.

                    "Owner  Trustee" means each Owner Trustee listed on Schedule
5 attached  hereto,  not in its individual  capacity but solely as owner trustee
under the applicable Trust Agreement.

                    "Parts"  mean,  with  respect to any Aircraft or any Engine,
all appli ances, components,  parts,  instruments,  appurtenances,  accessories,
furnishings,  spare parts,  seats and other  equipment of whatever nature (other
than  complete  engines),  incorporated  or installed in or attached to any such
Aircraft or Engine as of the  Effective  Time  relating to any such  Aircraft or
Engine (subject to any pooling, replacement or exchange rights arising under the
Operative Agreements relating to such Aircraft or Engine).

                    "Person"  means  any  Government  Entity,  individual,  sole
proprietor ship,  partnership,  limited liability company, joint venture, trust,
unincorporated  organization,   association,  corporation,  institution,  public
benefit corporation or other entity.

                    "PIMC" means Polaris Investment Management Corporation, a
California corporation.

                    "Promissory  Note" shall have the meaning  assigned to it in
Section 4(a) hereof.

                    "Purchase  Price"  shall have the meaning  assigned to it in
Section 4(a) hereof.

                    "Purchase  Price Interest" means an amount equal to interest
on the "Cash  Amount" set forth on Schedule 4(a) hereto (as such Cash Amount may
be reduced  pursuant to Section 4(c) or Section  4(d)(ii)),  calculated  for the
period  from and  including  April 1, 1997  through but not  including  the date
Assignor  receives the Cash Amount  pursuant to Section 4(a), at a rate equal to
5.3% per annum.

                    "Reserved  Rights"  mean,  with respect to each  Transferred
Interest,  any of the right,  title or interest of Assignor in, to or in respect
of each and every indemnity or other payment or obligation  (whether in the form
of rent or otherwise),  arising in connection with any claim, cause of action or
payment  obligation  payable  to, on behalf  or in favor of  Assignor,  under or
pursuant to any Trust  Agreement or any other Operative  Agreements  relating to
such Transferred Interest (including,  without limitation,  any rights or causes
of action  Assignor may have against any Owner Trustee  pursuant to the terms of
any  Trust  Agreement)  to  the  extent  that  such  indemnities,   payments  or
obligations  vested  or  relate  to an  act,  omission,  event  or  circumstance
occurring or accruing prior to the Effective Time for such Transferred  Interest
other  than  Aircraft  Income,  Lessee  Deposits  or other  rights  specifically
transferred to Assignee pursuant to this Agreement.

                                       7
<PAGE>








                    "Security  Agreement"  shall have the meaning assigned to it
in Section 7(f) hereof.

                    "SP Notice" shall have the meaning assigned to it in Section
11(b) hereof.

                    "Special CAA Counsel" shall have the meaning  assigned to it
in Section 7(o) hereof.

                    "Special FAA Counsel" shall have the meaning  assigned to it
in Section 7(o) hereof.

                    "Start  Date"  means  the  earlier  of (i) a  date  mutually
acceptable  to Assignor and Assignee or (ii) the sixth (6th)  Business Day after
which,  in the good faith  judgement of Assignor,  the conditions  precedent set
forth  in  Section  7(g),  (k) or (r) are  first  satisfied  with  respect  to a
Transferred Interest.

                    "Stock"  means all  shares,  options,  warrants,  general or
limited partnership  interests,  membership  interests,  participations or other
equivalents (regardless of how designated) of or in a corporation,  partnership,
limited  liability  company or equivalent  entity  whether  voting or nonvoting,
including,  without  limitation,   common  stock,  preferred  stock,  membership
interest or any other "equity  security" (as such term is defined in Rule 3a11-1
of the General Rules and Regula tions promulgated by the Securities and Exchange
Commission under the Securities Exchange Act of 1934, as amended).

                    "Superior  Proposal"  means any bona fide inquiry,  offer or
proposal which,  in the case of an offer or proposal,  is made by a Person that,
in the good faith judgment of Assignor,  is financially  capable of consummating
such  offer  or  proposal  to  acquire,  directly  or  indirectly,  (a)  all  or
substantially  all of the assets  subject to the Trust  Agreements or (b) all or
substantially all of the Transferred  Interests or (c) any combination  thereof,
the terms of which,  in the good faith judgment of Assignor,  provide  aggregate
present  value  consideration  to  Assignor  that is  materially  better or more
advantageous  than the  aggregate  present value  consideration  provided by the
transactions contemplated hereby; provided that in making such judgment Assignor
shall have no duty or obligation  to seek the advice of any outside  advisors or
appraisers.

                    "TASL" means Triton  Aviation  Services  Limited,  a Bermuda
corporation.

                                       8
<PAGE>









                    "Taxes"   mean   all   license,   recording,    documentary,
registration  and other  similar fees and all taxes,  levies,  imposts,  duties,
charges,  assessments or with holdings of any nature  whatsoever  imposed by any
Taxing  Authority,  together  with any  penalties,  additions  to tax,  fines or
interest thereon or additions thereto.

                    "Taxing  Authority"  means  any  federal,   state  or  local
Government  Entity or other taxing  authority in the United States,  any foreign
government  or any  political  subdivision  or  taxing  authority  thereof,  any
international  taxing  authority or any  territory or  possession  of the United
States or any taxing authority thereof.

                    "Threshold  Amount" shall have the meaning assigned to it in
Section 13(c) hereof.

                    "TIL"   means   Triton   Investments   Limited,   a  Bermuda
corporation.

                    "Third Party Action"  shall have the meaning  assigned to it
in Section 14(a) hereof.

                    "Total Loss" means, with respect to any Aircraft, any of the
following  events:  (a) total loss of such Aircraft or the  destruction,  damage
beyond  economic  repair or rendition  of such  Aircraft  permanently  unfit for
normal use for any reason  whatsoever;  (b) any  damage to such  Aircraft  which
results in an insurance settlement with respect to such Aircraft on the basis of
a total loss or on the basis of a compromised  or  constructive  total loss; and
(c) Loss of Title.

                    "Transfer  Taxes"  shall have the meaning  assigned to it in
Section 13(a) hereof.

                    "Transferred   Interests"   mean,   collectively,   all   of
Assignor's  present and future  right,  title and  interest in, to and under the
Trust  Estate,  the Trust Agree ments and all other  Operative  Agreements,  all
Lessee Deposits, all Aircraft Income and all Foreign Aircraft, but excluding, in
each  case,  the  Reserved  Rights.  The  term  Transferred   Interest  followed
immediately by a manufacturer's serial number of an Aircraft (e.g., "Transferred
Interest  19711")  shall mean,  in each case,  collectively,  all of  Assignor's
present and future right,  title and interest in, to and under the Trust Estate,
the Trust Agreement and other Operative Agreements, Lessee Deposits and Aircraft
Income relating to the Aircraft bearing such manufacturer's serial number.

                    "Trust Agreements" mean, collectively,  each Trust Agreement
listed  on  Schedule  6  attached  hereto,  as the same may have  been  amended,
supplemented or modified from time to time.

                                       9
<PAGE>








                    "Trust  Estate"  means,  collectively,  each Trust Estate as
defined in each of the Trust Agreements.

                    "Trusts" mean,  collectively,  each Trust as defined in each
of the Trust Agreements.

                    "Unfunded Commitment" means, with respect to any Transferred
Interest,  any  unfunded  obligations  of Assignor or the Owner  Trustee to make
loans,  advances  or  extensions  of credit  or to defer or extend  the time for
payment of rent  obligations  for the purpose of funding or otherwise  financing
modifications to the Aircraft to which such Transferred  Interest relates or the
acquisition of equipment.

                    "without special inquiry" means with respect to Assignor, no
inquiry other than that conducted in the ordinary  course of  administering  the
transactions  contemplated by the Operative Agreements and that conducted in the
ordinary course of negotiating the transactions  contemplated by this Agreement,
by any director, officer, employee or agent of Assignor who is actively involved
in negotiating the transactions contemplated by this Agreement.

                    As used herein,  each of "Assignor,"  "Assignee,"  "Lessee,"
"Owner  Trustee"  or  any  other  Person  includes,  without  prejudice  to  the
provisions of any Operative Agreements,  any successor in interest to it and any
permitted transferee, permitted purchaser or permitted assignee of it.


SECTION 2.          Sale and Assignment

                    Subject to the terms and conditions of this Agreement and in
reliance on the  representations and warranties of Assignee set forth herein, at
each applicable  Effective Time,  Assignor does hereby sell, assign and transfer
to Assignee all of Assignor's  present and future right,  title and interest in,
to and under each Trans ferred Interest including,  without  limitation,  all of
the Assumed  Liabilities  relating to such Transferred  Interest;  provided that
such sale, assignment and transfer shall be effective only upon the satisfaction
or  waiver,  at or  prior  to  the  applicable  Effective  Time  for  each  such
Transferred   Interest,   of  the  conditions  set  forth  in  Section  7,  such
satisfaction or waiver to be evidenced by Assignor's acceptance from Assignee of
the Assignment and Assumption Agreement for each such Transferred Interest.

                                       10
<PAGE>








SECTION 3.          Purchase and Assumption

                    Subject to the terms and conditions of this Agreement and in
reliance on the  representations and warranties of Assignor set forth herein, at
each  applicable  Effective  Time,  Assignee does hereby (i) purchase and accept
each Transferred  Interest,  (ii) assume all of the Assumed Liabilities relating
to each such  Transferred  Interest and (iii)  confirm that it shall be deemed a
party to each  Trust  Agreement  as of the  Effective  Time  relating,  and with
respect,  to the Transferred  Interest  referenced in such Trust Agreement,  and
agrees to be bound by all the terms of each  thereof and hereby  undertakes  and
assumes all of the Assumed  Liabilities  relating to such Trans ferred Interest;
provided,  however,  that Assignor  shall remain liable for the  obligations  of
Assignor  relating to Reserved Rights;  provided,  further,  that such purchase,
acceptance  and  assumption  shall be effective  only upon the  satisfaction  or
waiver,  at or  prior to the  applicable  Effective  Time  for such  Transferred
Interest,  of the conditions set forth in Section 8, such satisfaction or waiver
to be  evidenced  by  Assignee's  delivery  to Assignor  of the  Assignment  and
Assumption Agreement for such Transferred Interest. The assumption  contemplated
hereby,  at the  applicable  Effective  Time, as between  Assignor and Assignee,
shall be deemed to release  Assignor  from all Assumed  Liabilities  relating to
such Transferred Interest.


SECTION 4.          Purchase Price

                    (a)    Payment of Purchase Price

                           The purchase price for the  Transferred  Interests is
as set forth on Schedule 4(a) attached  hereto plus the Purchase  Price Interest
(the "Purchase Price").  The Purchase Price Interest shall be due and payable on
the  Business Day after the earlier to occur of (i) the last  Effective  Time to
occur hereunder and (ii) the seventh Business Day after the Start Date and shall
be paid by Assignee to Assignor by wire transfer of immediately  available funds
in  accordance  with the  instructions  of  Assignor.  At or prior to the  first
Effective Time to occur pursuant to the terms hereof, Assignee shall (i) deliver
a note to Assignor in  substantially  the form attached hereto as Exhibit A (the
"Promissory  Note"), in an amount equal to the amount set forth on Schedule 4(a)
as the "Note Amount" and (ii) wire transfer  immediately  available  funds in an
amount  equal to the amount set forth on Schedule  4(a) as the "Cash  Amount" to
the Escrow Agent for deposit into the account established pursuant to the Escrow
Agreement (the "Cash Account").

                                       11
<PAGE>








                    (b)    Transfer of Aircraft Income and Lessee Deposits

                           For each  Daylight  Effective  Time and on the Mop-Up
Date, contemporaneously with such Daylight Effective Time or on the Mop-Up Date,
and for each Effective  Time that does not constitute a Daylight  Effective Time
or is not deemed to occur on the Mop-Up Date,  promptly at the  beginning of the
next  Business  Day after such  Effective  Time,  Assignor  shall wire  transfer
immediately  available funds to Assignee, at an account designated in writing by
Assignee,  in an  amount  equal  to the  Aircraft  Income  and  Lessee  Deposits
estimated by Assignor  pursuant to Section  4(d)(i) hereof to constitute part of
the  Transferred  Interest  transferred (or deemed to be transferred) as of such
Effective Time or as of the Mop-Up Date.

                    (c)    First Effective Date; Mop-Up Date

                           Each of Assignor  and Assignee  covenants  and agrees
that (i) if each of the  conditions  precedent  in Section 7 (as to Assignor) or
Section 8 (as to Assignee) are satisfied or waived by the appropriate party, the
first  Effective  Time will occur on the Start Date and (ii) the Effective  Time
for each and every  Transferred  Interest will occur not later than the close of
business in New York on the Mop-Up Date.  Each of Assignor and Assignee  further
agrees that at any time after the earlier of (i) the seventh  Business Day after
the Start Date and (ii) the last  Effective  Time to occur pursuant to the terms
hereof, (A) Assignor is hereby authorized to withdraw from the Cash Account,  an
amount equal to the Cash Amount less any  reduction of the Cash Amount  pursuant
to the last  sentence of this Section 4(c) or pursuant to Section  4(d)(ii) less
one-half  of the fees  owed to the  Escrow  Agent  and (B)  Assignee  is  hereby
authorized  to withdraw  from the Cash  Account all other funds in excess of the
amount set forth in clause (A);  provided,  however,  if Assignee  withdraws the
Cash  Amount  pursuant  to the  foregoing  clause (i) and there is a  subsequent
reduction in the Cash Amount pursuant to the last sentence of this Section 4(c),
then  Assignor  shall  promptly  return  to  Assignee  an  amount  equal to such
subsequent  reduction  plus  interest  at the  rate of 5.3% per  annum  from the
withdrawal  date through the date of repayment to Assignee.  On the Mop-Up Date,
so long as (i) the  conditions  precedent  set forth in Section 7 hereof  (other
than with respect to the location of the Aircraft)  shall have been satisfied or
waived by Assignor, Assignor shall be obligated to deliver, with respect to each
Transferred   Interest  that  has  not  been  assigned  previously  to  Assignee
(including any Transferred  Interest which has not been  transferred  previously
because the Aircraft relating to such Transferred  Interest has been the subject
of a Loss of  Title  but as to  which  such  Loss of  Title  has  been  cured or
otherwise  corrected on or prior to the Mop-Up Date),  Assignment and Assumption
Agreements,  the evidence of authorization  described in Section  8(e)(iv),  any
consents referred to in Section 5.1(b),  the opinions  described in Section 8(i)
and any  other  instruments  or  documents  as  Assignee  or its  counsel  shall

                                       12
<PAGE>








reasonably  request  and (ii) the  conditions  precedent  set forth in Section 8
hereof (other than with respect to the location of the Aircraft) shall have been
satisfied or waived by Assignee,  Assignee  shall be obligated to deliver,  with
respect to each  Transferred  Interest that has not been assigned  previously to
Assignee  (including any  Transferred  Interest  which has not been  transferred
previously  because the Aircraft relating to such Transferred  Interest has been
the subject of a Loss of Title but as to which such Loss of Title has been cured
or  otherwise  corrected  on or  prior  to  the  Mop-Up  Date),  Assignment  and
Assumption  Agreements,  the  evidence  of  authorization  described  in Section
7(j)(v),  any consents referred to in Section 6.1(b),  the opinions described in
Section 7(n) and any other  instruments  or documents as Assignor or its counsel
shall reasonably request. If on the Mop-Up Date any of the conditions  precedent
set forth in  Section 7 or  Section 8 hereof  (other  than with  respect  to the
location of the Aircraft) are not  satisfied or waived by the  applicable  party
with respect to any Transferred Interest,  any Aircraft which is subject of such
Transferred  Interest  will no longer be the subject of this  Agreement and this
Agreement  will be  deemed  to be  reformed  to delete  all  references  to such
Aircraft and such Transferred Interest and the Purchase Price will be reduced in
an amount equal to the Allocable  Portion  Percentage for such Aircraft and each
of the Note Amount and the Cash Amount as set forth on Schedule 4(a) hereof will
be adjusted on a pro rata basis.

                    (d)    Settlement of Aircraft Income and Lessee Deposits

                           (i) Prior to assignment of a Transferred  Interest to
Assignee  hereunder,  Assignor shall estimate the Aircraft Income and any Lessee
Deposits that have been  received by Assignor or the Owner  Trustee  relating to
such  Transferred  Interest  as  of  the  applicable  Effective  Time  for  such
Transferred  Interest.  Because the actual amount of the Aircraft Income and any
Lessee Deposits  relating to a Transferred  Interest and received by Assignor or
such Owner Trustee will not be readily  determinable  until after the applicable
Effective  Time,  a final  calculation  cannot be made on that date.  Therefore,
within  fifteen  (15)  Business  Days  after the end of the month in which  such
Effective  Time  occurs,   Assignor  shall  provide  Assignee  with  such  final
calculation  (in reasonable  detail) of Aircraft  Income and any Lessee Deposits
that have been  received  by  Assignor  or the Owner  Trustee  relating  to such
Transferred  Interest.  To the extent the calculation indicates that the amounts
transferred  by Assignor  pursuant to Section  4(b) hereof with  respect to such
Transferred Interest were in excess of the actual Aircraft Income and any Lessee
Deposits  received by Assignor or the Owner Trustee relating to such Transferred
Interest,  Assignee  shall  promptly  pay the amount of such  excess to Assignor

                                       13
<PAGE>








(plus  interest on such amount at the rate of 5.3% per annum from the applicable
date of payment to Assignee to the date of repayment to Assignor). To the extent
the calculation  indicates that the amounts  transferred by Assignor pursuant to
Section 4(b) hereof with respect to such Transferred Interest were less than the
actual Aircraft Income and any Lessee Deposits received by Assignor or the Owner
Trustee relating to such Transferred  Interest,  Assignor shall promptly pay the
amount of such  deficiency to Assignee (plus interest on such amount at the rate
of 5.3% per annum from the Business Day following the applicable  Effective Time
to the date of payment to Assignee).  An  adjustment  to the Purchase  Price for
Aircraft  Income under this Section 4(d)(i) shall be treated by the parties as a
purchase price adjustment for all income tax purposes.

                           (ii) If at any time prior to the last  Effective Time
to occur  pursuant  to the terms  hereof,  any  Aircraft  which is  subject of a
Transferred Interest not yet transferred by Assignor to Assignee suffers a Total
Loss,  such  Aircraft  will no longer be the subject of this  Agreement and this
Agreement  will be  deemed  to be  reformed  to delete  all  references  to such
Aircraft and the related Transferred  Interests;  provided,  however,  that with
respect to any such  Aircraft,  if such Total Loss is due to a Loss of Title and
if Assignor  cures or  otherwise  corrects  such Loss of Title by  regaining  or
recovering the use thereof or title thereto on or prior to the Mop-Up Date, such
Aircraft will be deemed to be reinstated and once more subject to this Agreement
and this  Agreement  will be deemed to be  reformed  to include  all  previously
deleted  references  to such  Aircraft  and the related  Transferred  Interests.
Contemporaneously  with the  removal  of any  Aircraft  from  the  terms of this
Agreement,  the  Purchase  Price  will be  reduced  in an  amount  equal  to the
Allocable  Portion  Percentage for such Aircraft and each of the Note Amount and
the Cash Amount as set forth on  Schedule  4(a) hereof will be adjusted on a pro
rata basis.  Contemporaneously  with the  reinstatement of an Aircraft into this
Agreement,  the  Purchase  Price  will be  increased  in an amount  equal to the
Allocable  Portion  Percentage for such Aircraft and each of the Note Amount and
the Cash Amount as set forth on  Schedule  4(a) hereof will be adjusted on a pro
rata basis. If at any time prior to the last Effective Time to occur pursuant to
the terms hereof,  any Aircraft  which is subject of a Transferred  Interest not
yet transferred by Assignor to Assignee  suffers any property damage or loss not
constituting  a Total  Loss and such  property  damage  or loss is not  cured or
corrected  prior to the time when such  Transferred  Interest is transferred (or
deemed  to be  transferred)  by  Assignor  to  Assignee,  Assignor  shall pay to
Assignee  any  insurance  proceeds  received  by Assignor  with  respect to such
property  damage or loss promptly  after  receipt by Assignor of such  insurance
proceeds;  provided,  however, that Assignor shall not enter into any settlement
of any  insurance  claim without the prior  written  consent of Assignee,  which
consent may not be unreasonably withheld.

                                       14
<PAGE>








SECTION 5.          Representations and Warranties of Assignor; Limitation of
                    Warranty; Covenant with Respect to Pre-Closing Actions

                    5.1  Representations  and Warranties of Assignor.  As of the
date  hereof  and as of each  Effective  Time with  respect  to the  Transferred
Interest being transferred at such Effective Time,  Assignor makes the following
representations and warranties to Assignee:

                    (a)    Partnership Organization, Etc.

                           Assignor (i) is a limited partnership duly organized,
validly existing and in good standing under the laws of the State of California,
(ii) is a Citizen of the United States and (iii) has the  requisite  partnership
power and authority to carry on its business as presently  conducted,  to own or
hold under lease its  properties,  and to enter into and perform its obligations
under  this  Agreement  and each of the  Ancillary  Agreements  to which it is a
party.

                    (b)    Due Authorization; Non-Contravention

                           The  execution  and  delivery  by  Assignor  of  this
Agreement and each of the Ancillary  Agreements to which it is a party,  and the
performance by Assignor of its obligations  hereunder and  thereunder,  (i) have
been  duly  authorized  by all  necessary  partnership  action  on the  part  of
Assignor,  (ii) do not require any part nership approval, or approval or consent
of any trustee or holder of any  indebtedness  or  obligations  of Assignor  not
already  obtained,   (iii)  do  not  contravene  any  law,   governmental  rule,
regulation,  judgment  or order  applicable  to or binding on  Assignor,  or the
limited  partnership  agreement of Assignor or contravene the provi sions of, or
constitute a default  under or result in the creation of any Lien (other than as
provided for or otherwise permitted in the Operative  Agreements) upon the Trust
Estate or any other  Transferred  Interest under any indenture,  mortgage,  bank
credit agreement,  note or bond purchase agreement,  long-term lease, license or
other  agreement or instrument to which Assignor is a party or by which Assignor
is bound and (iv) except as set forth on Schedule 5(b) attached  hereto,  do not
require the consent or  approval  of, the giving of notice to, the  registration
with,  or the taking of any other  action in respect of, any  federal,  state or
foreign  governmental  authority  or agency or any other  Person,  except  those
already obtained.

                    (c)    Due Execution and Delivery; Enforceability

                           This  Agreement and each of the Ancillary  Agreements
to which it is a party have been duly executed and delivered and are enforceable
against  Assignor  in  accordance  with  their  terms,  subject to the effect of
bankruptcy,  insolvency,  reorganization,  receivership,  moratorium  and  other

                                       15
<PAGE>








similar laws affecting the rights and remedies of creditors  generally and, with
respect to the enforceability of this Agreement or any such Ancillary Agreement,
by  general   principles   of  equity,   including   principles   of  commercial
reasonableness,  good faith and fair dealing  (regardless of whether enforcement
is sought in a proceeding at law or in equity).

                    (d)    Event of Default

                           Except as set forth on Schedule  5(d), no claims have
been made by or at the direction of Assignor that remain unresolved under any of
the  Operative  Agreements,  and to the actual  knowledge of  Assignor,  without
special inquiry,  no basis for such claims exists (excluding in all cases claims
for  reimbursement  of fees,  costs and expenses which are either  immaterial or
incurred in the ordinary  course).  Except as set forth on Schedule 5(d), to the
actual  knowledge of Assignor,  without special  inquiry,  (i) no disputes exist
among any of the parties to the Operative  Agreements  concerning  the rights or
obligations of such parties thereunder, (ii) there exists no default or event of
default under any Leases,  any Trust Agreement or any other Operative  Agreement
attributable  to any act or  omission  of  Assignor,  (iii)  Assignor  is not in
default  under  any of the  Operative  Agreements,  (iv) no  default  under  any
Operative  Agreement  has occurred and is  continuing  as a result of any action
taken by the  Owner  Trustee  in  accordance  with any  express  instruction  by
Assignor and (v) there has been no assertion by any Lessee of any default on the
part of Assignor or the Owner Trustee under any Operative Agreement.

                    (e)    Total Loss

                           To the actual knowledge of Assignor,  without special
inquiry, none of the Aircraft are the subject of any Total Loss.

                    (f)    Taxes

                           (i) All tax returns and reports  required to be filed
by or on behalf of each Owner  Trustee  (solely in its capacity as Owner Trustee
and not in its individual capacity), and all federal income tax returns required
to be filed by or on behalf of  Assignor  on or before the  Effective  Time have
been timely filed with the appropriate  taxing  authorities in all jurisdictions
in which such tax returns  were  required to be filed and all taxes shown due on
such tax returns have been paid in full; and

                           (ii) No  claims  have  been  made by or on  behalf of
Assignor or any other Person in respect of any  obligation  under the  Operative
Agreements  to  indemnify  any Owner  Trustee or Assignor for or with respect to
Taxes,  and  Assignor  has no present  intention of making any such claim (other
than possible  claims for state,  local and foreign Taxes or foreign tax credits

                                       16
<PAGE>








arising from the use or operation  of the Aircraft by the  applicable  Lessee or
any sublessee prior to the applicable Effective Time).

                    (g)    Litigation

                           Except as set forth on Schedule  5(g)  hereof,  there
are no legal or governmental  actions,  suits or proceedings  pending or, to the
actual  knowledge of Assignor,  threatened  against  Assignor  before any court,
administrative  agency or tribunal which,  if determined  adversely to Assignor,
would  materially  adversely  affect the  ability  of  Assignor  to perform  its
obligations under this Agreement or any of the Ancillary  Agreements to which it
is a party.

                    (h)    Encumbrances

                           Except as set forth on Schedule 5(h) hereof, Assignor
is the sole legal and beneficial owner of (i) each of the Transferred  Interests
(other than the Foreign  Aircraft),  free and clear of all Liens and,  except as
set forth on Schedule 5(b),  transfer  restrictions and (ii) each of the Foreign
Aircraft, free and clear of all Liens and, except as set forth on Schedule 5(b),
transfer  restrictions  other than (A) Liens that are  permitted by the terms of
the leases  relating to such  Foreign  Aircraft and (B) the rights of the Lessee
with  respect to such  Foreign  Aircraft.  Except as set forth on Schedule  5(h)
hereof,  each Owner  Trustee is the sole  legal  owner of each Trust  Estate for
which such Owner  Trustee is owner  trustee  pursuant  to the  applicable  Trust
Agreement,  free and clear of all  Liens  and,  except as set forth on  Schedule
5(b),  transfer   restrictions  other  than  Liens  permitted  by  and  transfer
restrictions  contained  in the  Operative  Agreements  relating  to such  Trust
Estate. Except as otherwise provided in the Operative  Agreements,  Assignor has
not previously sold, assigned,  encumbered,  transferred or conveyed,  and other
than as provided in this Agreement, has no obligation to sell, assign, encumber,
transfer  or convey,  any of its right,  title or  interest  in, to or under the
Transferred Interests to any Person.

                    (i)    Brokers' Fees

                           Assignor  is not liable for the fees of any broker or
Person  acting  on  Assignor's   behalf  in  connection  with  the  transactions
contemplated  hereby  or by any of the  Ancillary  Agreements  to  which it is a
party.

                                       17
<PAGE>








                    (j)    Operative Agreements

                           Except as set forth on Schedule  5(j),  Assignor  has
provided Assignee with true and complete originals of each of the Leases and the
Trust  Agreements  and  with  true  and  complete  copies  of each of the  other
Operative  Agreements and all amendments and supplements thereto as set forth on
Schedules  2,  4 and  6  hereto,  which  represent,  collectively,  all  of  the
agreements,  instruments  and  documents  among  Assignor and the parties to the
Operative  Agreements  with respect to the  Transferred  Interests  and no other
agreements,  instruments  or  documents,  among  Assignor and the parties to the
Operative Agreements, with respect to the Transferred Interests exist.

                    (k)    Title to Transferred Interests

                           Upon  execution  and  delivery to Assignee of each of
the  Assign  ment  and  Assumption   Agreements  and  the  consummation  of  the
transactions contem plated hereunder and thereunder, Assignee will acquire legal
title to the  Transferred  Interests,  free and clear of all Liens and  transfer
restrictions other than as set forth on Schedule 5(h).

                    (l)  Unfunded Commitments

                           Except as set forth on  Schedule 7 hereof,  there are
no Unfunded Commitments in respect of any Aircraft.

                    5.2  Supplements  to  Schedules;  Post-Signing  Information.
Assignor may supplement or amend Schedules 5(d), 5(g) and 5(h) to this Agreement
with respect to any matter,  condition or occurrence hereafter arising which, if
existing or occurring at the date of this Agreement, would have been required to
be set  forth or  described  in such  Schedules  or would  otherwise  have  been
inconsistent with its representations herein.

                     5.3   Limitation of  Warranty.  Assignor's  representations
and warranties are limited as set forth below:

                    (a)    THE AIRCRAFT, EACH ENGINE AND EACH PART THAT
                           CONSTITUTE A PORTION OF ANY TRANSFERRED
                           INTEREST IS BEING TRANSFERRED AND DELIVERED
                           TO ASSIGNEE "AS IS" AND "WHERE IS," AND EXCEPT
                           AS EXPRESSLY SET FORTH IN SECTION 5.1 HEREOF,
                           WITHOUT ANY REPRESENTATION, GUARANTEE OR
                           WARRANTY OF ASSIGNOR, EXPRESS OR IMPLIED, OF
                           ANY KIND, ARISING BY LAW OR OTHERWISE; AND

                                       18
<PAGE>








                    (b)    WITHOUT LIMITING THE GENERALITY OF THE FORE
                           GOING, ASSIGNOR SPECIFICALLY DISCLAIMS, AND
                           EXCLUDES HEREFROM (i) ANY EXPRESS OR IMPLIED
                           WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
                           PARTICULAR PURPOSE, (ii) ANY IMPLIED WARRANTY
                           OF FREEDOM FROM ANY RIGHTFUL CLAIM BY WAY
                           OF INFRINGEMENT OF PATENT, COPYRIGHT, TRADE
                           MARK, DESIGN OR OTHER PROPRIETARY RIGHT,
                           (iii) ANY IMPLIED WARRANTY ARISING FROM COURSE
                           OF PERFORMANCE, COURSE OF DEALING OR USAGE
                           OF TRADE, AND (iv) EXCEPT AS EXPRESSLY SET
                           FORTH IN SECTION 13(c) HEREOF, ANY OBLIGATION
                           OR LIABILITY OF ASSIGNOR ARISING IN TORT,
                           WHETHER OR NOT ARISING FROM THE NEGLIGENCE
                           OF ASSIGNOR, ACTUAL OR IMPLIED, OR IN STRICT
                           LIABILITY, INCLUDING ANY OBLIGATION OR
                           LIABILITY FOR LOSS OF USE, REVENUE OR PROFIT
                           WITH RESPECT TO THE AIRCRAFT OR ENGINE OR
                           PART OR FOR ANY LIABILITY OF ASSIGNOR TO ANY
                           THIRD PARTY OR ANY OTHER DIRECT, INCIDENTAL,
                           SPECIAL OR CONSEQUENTIAL DAMAGES
                           WHATSOEVER.

         5.4 Actions with Respect to Transferred  Interests.  From the date this
Agreement  is executed  and  delivered by Assignor to Assignee to the earlier to
occur of (i) the termination of this Agreement  pursuant to Section 15 hereof or
(ii) the  Effective  Time with  respect  to a  Transferred  Interest,  except as
otherwise expressly required or permitted by this Agreement,  Assignor shall not
and shall not direct the Owner Trustee to, without the prior written  consent of
Assignee:

                    (a) enter into or materially modify any agreement,  contract
or commitment  which, if entered into,  created or established prior to the date
of  this  Agreement,  would  be  required  to be  listed  (or,  in the  case  of
modifications and amendments,  pertains to an agreement, contract, commitment or
arrangement  which  is  presently  listed)  on  Schedule  2,  4, 7 or 8 of  this
Agreement  or waive  any  default  or  event  of  default  under  any  Operative
Agreement; or

                    (b)  mortgage,  pledge  or  otherwise  encumber  any  of the
Transferred Interests or any Aircraft which is part of a Trust Estate; or

                    (c) sell, lease, transfer or otherwise dispose of any of the
Transferred Interests or any Aircraft which is a part of a Trust Estate; or

                                       19
<PAGE>







                    (d) enter into an agreement or  arrangement to do any of the
above.


SECTION 6.          Representations and Warranties of Assignee; Access Covenant

                    6.1  Representations  and Warranties of Assignee.  As of the
date  hereof  and as of each  Effective  Time with  respect  to the  Transferred
Interest being transferred at such Effective Time,  Assignee makes the following
representations and warranties to Assignor:

                    (a)    LLC Organization, Etc.

                           Assignee  (i) is a  limited  liability  company  duly
organized,  validly existing and in good standing under the laws of the State of
California,  and (ii) has the  requisite  power  and  authority  to carry on its
business as presently  conducted and as proposed to be conducted  after the date
of this Agreement, to own or hold under lease its properties,  and to enter into
and  perform  its  obligations  under  this  Agreement,  each  of the  Ancillary
Agreements to which it is a party,  each of the Trust Agreements and each of the
other Operative Agreements.

                    (b)    Due Authorization; Non-Contravention

                           The  execution  and  delivery  by  Assignee  of  this
Agreement and each of the Ancillary  Agreements to which it is a party,  and the
performance by Assignee of its obligations  hereunder,  thereunder and under the
Trust  Agreements  and  the  other  Operative  Agreements  (i)  have  been  duly
authorized by all necessary action on the part of Assignee,  (ii) do not require
any member  approval or any  approval or consent of any trustee or holder of any
indebtedness or obligations of Assignee except those already obtained,  (iii) do
not  contravene  any provision of the Act or any other law,  governmental  rule,
regulation,  judgment  or order  applicable  to or binding on  Assignee,  or the
organizational  documents  of  Assignee  or  contravene  the  provisions  of, or
constitute a default under, or result in the creation of any Lien (other than as
provided for or otherwise permitted in the Operative  Agreements) upon the Trust
Estate  under any  indenture,  mortgage,  bank  credit  agreement,  note or bond
purchase agreement, long-term lease, license or other agreement or instrument to
which  Assignee is a party or by which  Assignee is bound and (iv) except as set
forth on Schedule 6(b) attached  hereto,  do not require the consent or approval
of, the giving of notice to, the  registration  with, or the taking of any other
action in respect of, any federal,  state or foreign  governmental  authority or
agency or any other Person, except those already obtained.

                                       20
<PAGE>








                    (c)    Due Execution and Delivery; Enforceability

                           This  Agreement and each of the Ancillary  Agreements
to which it is a party have been duly executed and delivered and are enforceable
against  Assignee  in  accordance  with  their  terms,  subject to the effect of
bankruptcy,  insolvency,  reorganization,  receivership,  moratorium  and  other
similar laws affecting the rights and remedies of creditors  generally and, with
respect to the enforceability of this Agreement or any such Ancillary Agreement,
by  general   principles   of  equity,   including   principles   of  commercial
reasonableness,  good faith and fair dealing  (regardless of whether enforcement
is sought in a proceeding at law or in equity).

                    (d)    Litigation

                           There are no legal or governmental actions,  suits or
proceedings pending or, to the actual knowledge of Assignee,  threatened against
Assignee  before  any  court,   administrative  agency  or  tribunal  which,  if
determined adversely to Assignee,  would materially adversely affect the ability
of  Assignee  to  perform  its  obligations  under  this  Agreement,  any of the
Ancillary Agreements, the Trust Agree ments or the other Operative Agreements.

                    (e)    Compliance with Operative Agreements

                           Prior  to  the  Effective   Time  for  a  Transferred
Interest,  Assignee will have complied with and satisfied all of the conditions,
requirements and other  obligations  imposed on Assignee pursuant to each of the
Leases,  Trust  Agreements and other  Operative  Agreements  which have not been
waived  by the party  entitled  to  require  compliance  with  such  conditions,
requirements  or  other  obligations  in order to  effect  a  permitted  binding
transfer of the Transferred Interests to Assignee.

                    (f)    Non-Airline

                           Assignee is not a commercial air carrier or Affiliate
thereof that is in direct competition with any Lessee.

                    (g)    Brokers' Fees

                           Assignee is not liable for the fees of any broker or
Person  acting  as  a  broker  on  Assignee's  behalf  in  connection  with  the
transactions contemplated hereby.

                                       21
<PAGE>








                    (h)    Acquisition For Own Account

                           The  Transferred  Interests  are  being  acquired  by
Assignee for its own account,  for  investment and not with a view to any resale
or distribution thereof.  Assignee acknowledges that it has received, or has had
access to, all information  which it considers  necessary or advisable to enable
it to make a decision  concerning  the  transfer  of the  Transferred  Interests
including,  without  limitation,  access to the Leases, the Trust Agreements and
the other Operative Agreements and an opportunity to inspect the Aircraft.

                    6.2 Access  Covenant.  Assignee agrees that it shall use its
best  efforts to retain the  Operative  Agreements  with  respect to each of the
Transferred  Interests  transferred  to it  hereunder in  perpetuity;  provided,
however,  that  Assignee  shall  have the right to (a)  transfer  any  Operative
Agreements  relating to a  Transferred  Interest or Aircraft to the purchaser of
such  Transferred  Interest  or  Aircraft,  as the case may be,  subject to such
purchaser's agreement to retain such Operative Agreements and to permit Assignor
and its agents and representatives  access to such Operative  Agreements for the
remaining  term of the  Promissory  Note and (b)  dispose of or destroy any such
Operative Agreements at any time which is after payment in full and discharge of
the Promissory  Note.  Assignee will allow or will cause Assignor and its agents
and  representatives to be allowed access,  during regular business hours at the
offices of  Assignee,  to all of the  Operative  Agreements  and to any  Persons
having possession of or information relating to the Operative Agreements.


SECTION 7.          Conditions Precedent to the Obligations of Assignor

                    The   obligation   of   Assignor  to  sell  and  assign  any
Transferred Interest to Assignee is subject to the satisfaction of the following
conditions with respect to such Transferred Interest:

                    (a)    Purchase Price

                           Assignee  shall have paid the  Purchase  Price in the
manner specified in Section 4.

                    (b)    Affidavit of Limited Control by a Non-U.S. Citizen

                           Not later than the first Effective Time, an affidavit
shall have been duly  authorized,  executed,  notarized  and  delivered by Owner
Trustee to FAA Counsel in form  suitable for filing with the FAA pursuant to the
Act certifying that (i)  contemporaneously  with the Effective Time with respect

                                       22
<PAGE>








to each  Transferred  Interest,  the Trust  Agreement with respect thereto shall
have been  amended  to include  limitations  on the  voting  rights of  Assignee
thereunder and (ii) Owner Trustee is a Citizen of the United States  pursuant to
the Act.

                    (c)    Escrow Agreement

                           Assignor  shall  have  received  a copy of the Escrow
Agreement,  dated as of a date not later than the first  Effective Time to occur
under this Agree ment which shall have been  executed and delivered by Assignee,
Assignor and the Escrow Agent.

                    (d)    TASL "Keep Well" Agreement

                           Assignor  shall have received a copy of the Keep Well
Agree ment,  dated as of a date not later than the first Effective Time to occur
under this  Agreement  which shall have been  executed and delivered by Assignee
and TASL,  in  substantially  the form  attached  hereto as Exhibit B (the "Keep
Well").

                    (e)    TIL Keep Well Guaranty and Loan Guaranty

                           Assignor shall have received an original  counterpart
of the Keep Well  Guaranty  and the Loan  Guaranty,  each dated as of a date not
later than the first Effective Time to occur under this Agreement, each of which
shall  have been  executed  and  delivered  by TIL,  in  substantially  the form
attached  hereto as Exhibit  C-1 (the "Keep  Well  Guaranty")  or C-2 (the "Loan
Guaranty"), as applicable.

                    (f)    Assignee Security Agreement

                           Assignor shall have received an original  counterpart
of the  Pledge  and  Security  Agreement,  dated as of a date not later than the
first Effective Time,  which shall have been executed and delivered by Assignee,
TASL and each member of Assignee in  substantially  the form attached  hereto as
Exhibit D (the  "Security  Agreement")  together  with  evidence  that all other
actions  necessary  or, in the  opinion of  Assignor,  desirable  to perfect and
protect the security  interests and liens created by the Security Agreement have
been taken including,  without  limitation,  the filing of financing  statements
against Assignee, TASL and each member of Assignee.

                    (g)    Approvals and Consents

                           All  approvals,  consents  and other items  listed on
Schedule  5(b)  shall  have  been  obtained,  satisfactory  to  Assignor  in all
respects,   as   determined  by  Assignor  in  its  sole   discretion   and  any

                                       23
<PAGE>








authorizations  which may be required for the valid consummation by Assignor and
Assignee  of  the   transactions   contemplated  by  this  Agreement  under  the
Hart-Scott-Rodino  Antitrust  Improvements  Act of 1976, as amended,  shall have
been obtained  (including,  but not limited to, the expiration of any applicable
waiting period thereunder).

                    (h)    Due Authorization, Execution and Delivery

                           This   Agreement,   the   Assignment  and  Assumption
Agreement and any other Ancillary  Agreements  with respect to such  Transferred
Interest shall have been duly authorized, executed and delivered by Assignee.

                    (i)    Representations and Warranties

                           The   representations   and  warranties  of  Assignee
contained  herein shall be true and correct in all  material  respects as of the
applicable  Effective  Time  with the same  force  and  effect  as  though  such
representations and warranties had been made on and as of such Effective Time.

                    (j)    Organizational and Authorization Matters

                           Assignor shall have received:

                                (i)  Resolutions  of the boards of  directors of
each of TASL,  TIL, each member of Assignee that is not a natural  person and of
the manager of  Assignee,  certified  by the  respective  Secretary or Assistant
Secretary thereof,  as of the date of this Agreement,  to be duly adopted and in
full force and effect on such date,  authorizing (a) the consummation of each of
the  transactions  contemplated  by this  Agreement  and  each of the  Ancillary
Agreements  and (b)  specific  officers  or  representatives  of  TASL,  TIL and
Assignee to execute and deliver this  Agreement and the Ancillary  Agreements to
which any of them is a party.

                                (ii) Governmental  certificates,  dated the most
recent  practicable  date  prior to the  date of this  Agreement  with  telegram
updates  where  available,  showing  that each of Assignee,  TASL,  TIL and each
member  of  Assignee  that is not a  natural  person  is  organized  and in good
standing in the  jurisdiction  of its  organization  and that each of  Assignee,
TASL,  TIL and each member of Assignee that is not a natural person is qualified
as  a  foreign  corporation,   partnership  or  limited  liability  company,  as
applicable,  and in good  standing in each  jurisdiction  where the ownership or
operation  of  its   properties  or  conduct  of  its  business   requires  such
qualification.

                                       24
<PAGE>








                                (iii) A copy of (a) the certificate of formation
and all amendments thereto of Assignee and the articles of incorporation and all
amendments  thereto of each of TASL, TIL and each member of Assignee that is not
a natural  person,  each certified as of a recent date by the Secretary of State
of the jurisdiction of its organization, (b) the bylaws of each of TASL, TIL and
each member of Assignee that is not a natural person  certified by the Secretary
or  Assistant  Secretary  thereof  as true  and  correct  as of the date of this
Agreement  and (c) the  operating  agreement of Assignee  (which  shall  include
provisions that are  substantially in the form attached hereto as Exhibit E) and
the articles of  incorporation  and all amendments  thereto of each of TASL, TIL
and each  member of  Assignee  that is not a natural  person  certified,  by its
manager as true and correct on the date of this  Agreement  (with tax allocation
and cash distribution provisions deleted).

                                (iv)  Certificates   of  the  Secretary   or  an
Assistant Secretary of each of TASL, TIL and each member of Assignee that is not
a natural  person  and of the  manager of  Assignee,  as to the  incumbency  and
signatures of the representatives thereof executing this Agreement or any of the
Ancillary Agreements to which any of them is a party,  together with evidence of
the incumbency of such Secretary or Assistant Secretary.

                                (v)   As of each Effective Time,a certificate of
the Secretary, an Assistant Secretary or an Attesting Secretary of each of TASL,
TIL, each member of Assignee  that is not a natural  person and  the  manager of
Assignee certifying that the certificates delivered in accordance  with  clauses
(i), (ii), (iii) and (iv) above are true and correct as of such Effective Time.

                    (k)    Illegality; No Proceedings

                           At the applicable  Effective Time, the performance of
the trans actions  contemplated  hereby, upon the terms and conditions set forth
herein,  shall not, in the reasonable judgment of Assignor,  violate,  and shall
not  subject  Assignor  to any  penalty or  liability  under,  any law,  rule or
regulation binding upon Assignor.  At the applicable Effective Time, no legal or
governmental action, suit or proceeding shall have been instituted or threatened
before  any  court,  administrative  agency or  tribunal,  nor shall any  order,
judgment  or decree  have been  issued or  proposed  to be issued by any  court,
administrative agency or tribunal to set aside, restrain,  enjoin or prevent the
consummation of this Agreement or the transactions contemplated hereby.

                    (l)    No Total Loss

                           At the  applicable  Effective  Time,  there shall not
exist a Total Loss with  respect  to the  Aircraft  related to such  Transferred
Interest.

                                       25
<PAGE>








                    (m)    Opinions

                           Assignor  shall have  received an opinion  reasonably
satisfactory  to Assignor,  dated as of the first  Effective Time from Manwell &
Milton, counsel to Assignee,  each member of Assignee, TASL and TIL with respect
to such  matters  and to such  effect  as  Assignor  shall  reasonably  request.
Assignor shall also have received, with respect to each Transferred Interest, at
the applicable Effective Time for such Transferred Interest, an opinion from (i)
Manwell & Milton,  counsel to  Assignee  and (ii) Crowe & Dunlevy,  special  FAA
counsel  ("Special FAA Counsel") or Theodore Goddard  ("Special CAA Counsel") or
in each case with respect to such matters relating to such Transferred  Interest
and to such effect as Assignor shall reasonably request.

                    (n)    Location of Aircraft

                           Subject to Section 4(c)  hereof,  the location of the
Aircraft  relating to each Transferred  Interest shall be acceptable to Assignor
at the applicable Effective Time for such Transferred Interest.

                    (o)    TIL Balance Sheets

                           Assignor shall have received an audited balance sheet
of TIL as of December  31, 1996  reflecting  a  consolidated  net worth,  net of
minority interests, of at least $150,000,000.

                    (p)    Other   Instruments   and    Documents;    Additional
Information

                           Assignor  shall have received such other  instruments
and docu ments as Assignor or its counsel  shall  reasonably  request.  Assignor
shall have received  such other  documents and evidence with respect to Assignee
as Assignor  may  reasonably  request in order to  establish  the  authority  of
Assignee to consummate the  transactions  contemplated  by this  Agreement,  the
consummation of the transac tions contemplated by this Agreement,  the taking of
all  appropriate  action  in  connec  tion  therewith  and  compliance  with the
conditions set forth in this Agreement.

                    (q)    Outside Date

                           Except as otherwise agreed by the parties hereto, all
of the fore going  conditions  shall have been  satisfied or waived on or before
5:00 p.m. E.D.T. on June 30, 1997 (the "Outside Date").

                                       26

<PAGE>








                    (r)    No Pending Superior Proposal

                           Assignor shall not have received and have accepted or
be considering any Superior  Proposal with respect to such Transferred  Interest
in accordance with Section 11 hereof.


SECTION 8.          Conditions Precedent to the Obligations of Assignee

                    The  obligation  of  Assignee to  purchase  any  Transferred
Interest  from  Assignor  and  assume  the  obligations  related  thereto at the
applicable  Effective  Time is  subject  to the  satisfaction  of the  following
conditions:

                    (a)    Leases and Trust Agreements

                           The Lease and Trust  Agreement  and,  as  applicable,
each other Operative  Agreement with respect to such Transferred  Interest shall
be in full force and effect.

                    (b)    Due Authorization, Execution and Delivery

                           This   Agreement,   the   Assignment  and  Assumption
Agreement  and  any of the  other  Ancillary  Agreements  with  respect  to such
Transferred  Interest  to  which  Assignor  is a  party  shall  have  been  duly
authorized, executed and delivered by Assignor.

                    (c)    Representations and Warranties

                           The   representations   and  warranties  of  Assignor
contained  herein shall be true and correct in all  material  respects as of the
Effective Time with the same force and effect as though such representations and
warranties had been made on and as of such Effective Time.

                    (d)    Schedules

                           Schedule  5(d)  shall not have been  supplemented  or
amended by  Assignor  to  include a default  or event of  default  caused by the
filing by the Lessee of the  Aircraft  that is the  subject of such  Transferred
Interest for protection from its creditors.

                                       27
<PAGE>








                    (e)    Partnership Authorization Matters

                           Assignee shall have received:

                           (i)  Resolutions  of the board of  directors of PIMC,
general partner of Assignor,  certified by the Secretary or Assistant  Secretary
thereof, as of the date of this Agreement,  to be duly adopted and in full force
and  effect  on  such  date,  authorizing  (i) the  consummation  of each of the
transactions contemplated by this Agreement and each of the Ancillary Agreements
to which Assignor is a party and (ii) specific  officers or  representatives  to
execute  and  deliver  this  Agreement  and the  Ancillary  Agreements  to which
Assignor is a party.

                           (ii) A copy of the certificate of limited partnership
and all  amendments  thereto of  Assignor,  certified as of a recent date by the
Secretary of State of the  jurisdiction  of its  organization  and a copy of the
agreement  of limited  partnership,  as amended,  certified by an officer of the
general partner.

                           (iii)  Certificates  of the Secretary or an Assistant
Secretary of PIMC, certified by the Secretary or Assistant Secretary thereof, as
to the incumbency and signatures of the  representatives  thereof executing this
Agreement  or any of the  Ancillary  Agreements  to which  Assignor  is a party,
together  with  evidence  of the  incumbency  of  such  Secretary  or  Assistant
Secretary.

                           (iv) As of each Effective  Time, a certificate of the
Secretary or an Assistant  Secretary of PIMC  certifying  that the  certificates
delivered in  accordance  with  clauses  (i),  (ii) and (iii) above are true and
correct  with  respect to such  Transferred  Interest  being  conveyed as of the
applicable Effective Time.

                    (f)    Illegality; No Proceedings

                           At the applicable  Effective Time, the performance of
the trans actions  contemplated  hereby, upon the terms and conditions set forth
herein,  shall not, in the reasonable judgment of Assignee,  violate,  and shall
not  subject  Assignee  to any  penalty or  liability  under,  any law,  rule or
regulation binding upon Assignee.  At the applicable Effective Time, no legal or
governmental action, suit or proceeding shall have been instituted or threatened
before  any  court,  administrative  agency or  tribunal,  nor shall any  order,
judgment  or decree  have been  issued or  proposed  to be issued by any  court,
administrative agency or tribunal to set aside, restrain,  enjoin or prevent the
consummation of this Agreement or the transactions contemplated hereby.

                                       28
<PAGE>








                    (g)    Approvals and Consents

                           All  approvals and consents and other items listed on
Schedule 5(b) shall have been obtained.

                    (h)    No Total Loss

                           At the  applicable  Effective  Time,  there shall not
exist a Total Loss with  respect  to the  Aircraft  related to such  Transferred
Interest.

                    (i)    Opinions

                           Assignee  shall  have  received  opinions  reasonably
satisfactory to Assignee,  dated as of the first Effective Time from (i) Haight,
Gardner,  Poor &  Havens,  California  counsel  to  Assignor,  with  respect  to
Assignor's due organization and good standing, the due execution and delivery of
this Agreement and the Ancillary Agreements to which it is a party, no violation
of Assignor's organizational documents, the enforceability of this Agreement and
the  Ancillary  Agreements to which it is a party and that there are no consents
required under  California law and (ii) Weil,  Gotshal & Manges LLP,  counsel to
Assignor, that the execution and delivery of this Agreement and the consummation
of the transactions  contemplated thereby and compliance by the Company with the
provisions  thereof  will  not  conflict  with or  violate  any  federal  law or
regulation (other than federal securities laws, the Hart-Scott Rodino Act or any
federal laws or regulations  relating to the Federal Aviation  Administration or
civil or commercial aviation).  Assignee shall also have received,  with respect
to  each  Transferred  Interest,  at the  applicable  Effective  Time  for  such
Transferred  Interest,  an  opinion  from (i)  Haight,  Gardner,  Poor & Havens,
California  counsel to  Assignor  and (ii)  Special  FAA  Counsel or Special CAA
Counsel,  as applicable,  in each case with respect to such matters  relating to
such  Transferred  Interest  and to such  effect as  Assignee  shall  reasonably
request.

                    (j)    Location of Aircraft

                           Subject to Section 4(c)  hereof,  the location of the
Aircraft  relating to each Transferred  Interest shall be acceptable to Assignee
at the applicable Effective Time for such Transferred Interest.

                                       29
<PAGE>









                    (k)    Other   Instruments  and    Documents;     Additional
Information

                           Assignee  shall have received such other  instruments
and documents as Assignee or its counsel  shall  reasonably  request.   Assignee
shall have received  such other  documents and evidence with respect to Assignor
as Assignee  may  reasonably  request in order to  establish  the  authority  of
Assignor to consummate the  transactions  contemplated  by this  Agreement,  the
consummation of the transactions  contemplated by this Agreement,  the taking of
all appropriate  partnership action in connection  therewith and compliance with
the conditions set forth in this Agreement.

                    (l)    Outside Date

                           Except as otherwise agreed by the parties hereto, all
of the fore going  conditions  shall have been  satisfied or waived on or before
5:00 p.m. E.D.T. on the Outside Date.


SECTION 9.          Payments

                    To the extent not  transferred in accordance with Section 4,
Assignor hereby covenants and agrees to pay over to Assignee, no later than five
(5)  Business  Days after  receipt  by  Assignor  from and after the  applicable
Effective  Time,  any  Aircraft  Income  or Lessee  Deposits  paid to or for the
benefit of Assignor that consti tute a Transferred  Interest earlier transferred
to Assignee  hereunder  (including  any  amounts  payable as interest in respect
thereof),  and until so paid  over,  any  Aircraft  Income  or  Lessee  Deposits
received  by  Assignor  in respect  of any such  Transferred  Interest  shall be
received and held by Assignor in trust for Assignee.  Assignee hereby  covenants
and agrees to pay over to Assignor,  no later than five (5) Business  Days after
receipt by Assignee from and after the  applicable  Effective  Time, any amounts
paid to or for the benefit of Assignee  that  constitute  Reserved  Rights which
relate to a Transferred  Interest  earlier  transferred  (including  any amounts
payable as interest in respect thereof), and until so paid over any such amounts
received  by  Assignee  shall be  received  and held by  Assignee  in trust  for
Assignor.


SECTION 10.         Certain Notices

                    Assignor hereby  covenants and agrees promptly to forward to
Assignee any notice  Assignor  receives  from any party to any of the  Operative
Agreements (other than Assignee)  relating to any of the Transferred  Interests.
Assignee hereby covenants and agrees promptly to forward to Assignor any notice
Assignee receives from any party to any of the Operative  Agreements (other than
Assignor) pursuant to and in accordance with this Agreement,  the Assignment and
Assumption  Agreement,  the Trust  Agreements or any other  Operative  Agreement
related to the Reserved  Rights.  Assignor hereby covenants and agrees to notify
Assignee of any Reserved Right,  describing the  circumstances  of such Reserved
Right in reasonable  detail,  promptly  after  Assignor has actual  knowledge of
facts or  circumstances  giving rise to a Reserved Right and that such facts and
circumstances constitute a Reserved Right.

                                       30
<PAGE>








SECTION 11.         Superior Proposal

                    (a) Each party agrees and  acknowledges  that from and after
the date  hereof  until the close of  business  on April 28,  1997,  if Assignor
receives a Superior Proposal, Assignor may (i) furnish any information requested
by the Offering  Party with respect to such  Superior  Proposal  (other than the
contents of this  Agreement or any Ancillary  Agreement),  (ii)  participate  in
negotiations  with such Offering Party regarding such Superior Proposal or (iii)
enter into one or more letters of intent, term sheets or agreements with respect
to any Superior Proposals;  provided, however, that if Assignor proposes to take
any of the  actions  specified  in clause  (iii)  hereof,  Assignor  shall  give
Assignee prior written notice setting forth Assignor's proposed actions.

                    (b) Not later than the close of  business  on May 12,  1997,
Assignor  shall  require each  Offering  Party with whom it is still  engaged in
discussions  to submit a final  binding  offer,  subject only to  acceptance  by
Assignor.  Not later than the close of business on May 16, 1997,  Assignor shall
(i) determine  whether any such offer constitutes a Superior  Proposal,  (ii) if
there  is more  than one  Superior  Proposal,  select  which  Superior  Proposal
Assignor  intends to accept and (iii) provide written notice to Assignee setting
forth all the material terms and conditions of such selected  Superior  Proposal
("SP Notice").

                    (c) After receipt of the SP Notice, Assignee shall have five
(5) days to notify  Assignor of its  agreement to modify this  Agreement and any
Ancillary  Agreement as necessary  to acquire the  Transferred  Interests at the
same price and under the same terms and conditions as set forth in the SP Notice
("Assignee  Acceptance Notice");  provided further,  however, if under the terms
set forth in the SP Notice  Assignor is proposing to accept property (other than
cash or promissory  notes),  Assignee shall have the right to substitute cash in
an amount equal to the value of such other property.

                    (d) If Assignor does not give an SP Notice to Assignee on or
before May 16,  1997,  or if  Assignee  gives an Assignee  Acceptance  Notice to
Assignor in accordance with subsection (c) hereof, neither Assignor nor Assignee
shall thereafter have any right to terminate this Agreement  pursuant to Section
15(c).

                                       31
<PAGE>








SECTION 12.         Further Assurances

                    Each party agrees,  upon the reasonable request of the other
party at any time and from time to time,  promptly  to execute  and  deliver all
such further  documents and promptly to take and forbear from all such action as
may be reason ably necessary or appropriate in order to more effectively confirm
or  carry  out  the  provisions  of  this  Agreement  or any  of  the  Ancillary
Agreements,  including,  without  limitation,  the filing of any  Assignment and
Assumption  Agreement  with the FAA  pursuant to the Act or the CAA. The parties
agree that the transactions  are fully effective as of the applicable  Effective
Time and that they will  treat the  transactions  as such for all  purposes  and
acknowledge  that any filings with the FAA or the CAA are merely  ministerial in
nature.


SECTION 13.         Taxes and Indemnities

                    (a)    Transfer Taxes

                           Assignee  hereby  covenants  and  agrees  to pay (and
indemnify  and hold  Assignor  harmless on an  After-Tax  Basis for) any and all
registration,  docu ment or filing fees and any and all sales  taxes,  use taxes
and similar transfer taxes (including,  without limitation, any charges, such as
gross  receipts  taxes (but excluding any taxes in the nature of any income tax)
in lieu  thereof)  (collectively,  "Transfer  Taxes"),  that may be  imposed  in
connection with the sale,  assignment and transfer of any Transferred  Interests
including,  without  limitation,  any penalties,  fines or interest  thereon and
those Transfer  Taxes relating to the transfer of rights and other  interests in
and to, and the act of assuming  duties,  liabilities and obligations in, to and
under this Agreement, the Assignment and Assumption Agreements,  the Transferred
Interests,   the  Aircraft  and  the  Operative  Agreements  together  with  all
reasonable  and documented  out-of-pocket  costs,  expenses and attorney's  fees
incurred in connection  therewith.  Assignor hereby agrees to perform such acts,
including,  without  limitation,  attending  the  closing  of  the  transactions
contemplated hereby at a site or sites selected by Assignee,  and executing such
documents as may be reasonably necessary to minimize Transfer Taxes. The parties
further agree to furnish each other with such documents and certificates as they
may  reasonably  request in connection  with any claims for  exemption  from the
payment of Transfer Taxes.

                                       32
<PAGE>








                    (b)    Notice of IRS Reports

                           (i)  Assignor  shall  promptly   notify  Assignee  of
receipt from the IRS of any written  proposed or final revenue  agent's  report,
30-day  letter or notice of deficiency in which an adjustment is proposed to the
federal  income taxes of Assignor for which any of the Lessees would be required
to indemnify Assignor under any Operative Agreement and, thereafter,  shall upon
request keep  Assignee  apprised at least monthly of the progress of any protest
or proceeding in respect of such adjustment.

                           (ii)  Assignee  shall  promptly  notify  Assignor  of
receipt from the IRS of any written  proposed or final revenue  agent's  report,
30-day  letter or notice of deficiency in which an adjustment is proposed to the
federal  income taxes of Assignee for which any of the Lessees would be required
to indemnify Assignee under any Operative Agreement and, thereafter,  shall upon
request keep  Assignor  apprised at least monthly of the progress of any protest
or proceeding in respect of such adjustment.

                    (c)    Assignor's Indemnity

                           Assignor  hereby  covenants and agrees upon demand of
Assignee to pay and assume liability for, and indemnify,  protect,  defend, save
and keep  harmless  Assignee  and each of its  Affiliates  and in each such case
their  respective  directors,  officers,  employees  and agents  (the  "Assignee
Indemnitees"), on an After-Tax Basis, from and against any and all Damages which
may at any time or from time to time be imposed  upon,  incurred  by or asserted
against  any  of the  Assignee  Indemnitees  in any  way  relating  directly  or
indirectly  to,  or  arising  out  of,  (i)  any  inaccuracy  or  breach  of any
representation  or  warranty  made  by  Assignor  under  this  Agreement  or any
Ancillary Agreement to which it is a party, (ii) the ownership,  leasing, use or
operation of any Transferred  Interest prior to the Effective Time applicable to
such  Transferred  Interest  including,   without  limitation,  any  obligations
relating to the Trust Estate or any of the Operative Agreements relating to such
Transferred Interest which arise from acts,  omissions,  events or circumstances
occurring  or  accruing  prior  to the  Effective  Time  with  respect  to  such
Transferred  Interest  but not  including  any  Assumed  Liabilities,  (iii) the
failure of  Assignor  to perform or observe  any of its  obligations  under this
Agreement  or  any  Ancillary  Agreement  to  which  it  is a  party,  (iv)  any
litigation, claim or action brought by a limited partner of Assignor against any
Assignee  Indemnitee  to the extent such  litigation,  claim or action  directly
arises out of and relates to the  transactions  contemplated  by this  Agreement
other than to the extent any  litigation,  claim or action  relates  directly or
indirectly  to, or arises out of, the breach by such Assignee  Indemnitee of the
terms of this Agreement or any Ancillary Agreement or (v) any Liens set forth on
Schedule  5(h) hereto;  provided  that (a) Assignor  shall not be liable for any
Damages to the extent that  Assignee  has a recovery  available  to it under any
insurance  policy  which was in effect on or prior to the  applicable  Effective
Time; (b) Assignor shall not be liable for any Damages attributable to the gross
negligence or willful misconduct of Assignee or its Affiliates; and (c) Assignor
shall  not  be  liable  for  any  Damages  in  excess  of  the  Purchase  Price.
Notwithstanding the foregoing, Assignor shall be liable pursuant to this Section
13(c) only to the extent that the aggregate  cumulative  Damages incurred by the
Assignee  Indemnitees  which are required to be indemnified  by Assignor  exceed
$50,000 (the  "Threshold  Amount") in which event,  Assignor  shall then also be
liable for the initial $50,000 of aggregate  cumulative  Damages incurred by the
Assignee  Indemnitees;  provided,  that,  with  respect to any Lien set forth on
Schedule 5(h) hereto,  (x) the Threshold  Amount  limitation shall not apply and
Assignor shall be liable for all Damages arising from such Liens and (y) amounts
expended by Assignor to discharge  and release  such Liens shall not  constitute
Damages to be applied toward the Threshold  Amount and only those  expenses,  if
any,  actually incurred by Assignee in connection with such discharge or release
shall be so applied.

                                       33
<PAGE>








                    (d)    Assignee's Indemnity

                           Assignee  hereby  covenants and agrees upon demand of
Assignor to pay and assume liability for, and indemnify,  protect,  defend, save
and keep  harmless,  Assignor and each of its  Affiliates  and in each such case
their  respective  directors,  officers,  employees  and agents  (the  "Assignor
Indemnitees"), on an After-Tax Basis, from and against any and all Damages which
at any time or from time to time may be imposed  upon,  incurred  by or asserted
against the Assignor  Indemnitees in any way relating directly or indirectly to,
or  arising  out of,  (i) any  inaccuracy  or  breach of any  representation  or
warranty made by Assignee or any of its  Affiliates  under this Agreement or any
Ancillary  Agreement to which it or any of its  Affiliates is a party,  (ii) the
ownership, leasing, use or operation of any Transferred Interest on or after the
Effective  Time  applicable  to such  Transferred  Interest  including,  without
limitation, any obligations relating to the Trust Estate or any of the Operative
Agreements  relating  to  such  Transferred  Interest  which  arise  from  acts,
omissions,  events  or  circumstances  occurring  or  accruing  on or after  the
Effective Time with respect to such Transferred  Interest,  (iii) the failure of
Assignee or any of its Affiliates to perform or observe any of their  respective
obligations  under this Agreement or any Ancillary  Agreement to which it or any
of  its  Affiliates  is a  party,  (iv)  any  Assumed  Liabilities  or  (v)  any
modification,  amendment  or other  change  to any of the  Operative  Agreements
entered into by Assignee, or to which Assignee consents or forbears, in any such
case  without  the prior  written  consent of Assignor  (such  consent not to be
unreasonably  withheld)  that  affects  any of the  Reserved  Rights;  provided,
however,  that with respect to any Transferred  Interest which includes a Lease,
such indemnification  obligation shall only relate to modifications,  amendments
or other changes made or agreed to during the period  beginning on the Effective
Date  applicable  to such  Transferred  Interest  and ending on the date that is
twenty-four  (24) months  after the  termination  of the Lease  included in such
Transferred  Interest  (which  period  shall be deemed to include any  renewals,
extensions or continuations of such Lease).  Notwithstanding the foregoing,  (a)
Assignee  shall not be liable for any Damages to the extent that  Assignor has a
recovery  available to it under any  insurance  policy which was in effect on or
prior to the Effective  Time;  (b) Assignee  shall not be liable for any Damages
attributable  to the gross  negligence or willful  misconduct  of Assignor;  (c)
Assignee shall not be liable for any Damages in excess of the Purchase Price and
(d) Assignee  shall be liable  pursuant to this Section 13(d) only to the extent
that the  aggregate  Damages  incurred  by the  Assignor  Indemnitees  which are
required to be indemnified by Assignee  exceed $50,000 in which event,  Assignee
shall  then also be liable  for the  initial  $50,000  of  aggregate  cumulative
Damages incurred by the Assignor Indemnitees.

                                       34
<PAGE>








                    (e)    Survival of Representations and Warranties

                           All  representations  and  warranties  of the parties
hereto  contained in this Agreement  (including all Schedules  hereto) or in any
document,  statement,  certificate  or other  instrument  referred  to herein or
delivered at the applicable  Effective Time in connection with the  transactions
contemplated  hereby, that (i) relate to any Transferred Interest which includes
a Lease,  shall survive until the later of (A) twenty-four (24) months after the
Effective Time applicable to such Transferred Interest or (B) twelve (12) months
after the  expiry of the Lease  included  in such  Transferred  Interest  (which
period shall not be deemed to include any renewals,  extensions or continuations
of such Lease), (ii) relate to any Transferred Interest which does not include a
Lease,  shall survive  until  twenty-four  (24) months after the Effective  Time
applicable to such Transferred Interest and (iii) do not relate to a Transferred
Interest,  shall survive until twenty-four (24) months after the first Effective
Time to occur under this Agreement.


SECTION 14.         Indemnification Procedure

                    (a) Any  Assignee  Indemnitee  or Assignor  Indemnitee  (the
"Indemnified Party") seeking  indemnification  hereunder shall give to the party
obligated under this Agreement to provide  indemnification  to such  Indemnified
Party (the  "Indemnitor")  a notice  ("Claim  Notice")  describing in reasonable
detail the facts  giving rise to its claim for  indemnification  hereunder,  and
shall  include  in such  Claim  Notice  (if then  known) the amount or method of
computation of the amount of the claim, and a reference to the provision of this
Agreement or any other agreement,  document or instrument executed and delivered
hereunder or in  connection  herewith  upon which such claim is based;  provided
that a Claim Notice in respect of any action at law or suit in equity against an
Indemnified Party by a third party, as to which  indemnification  will be sought
(a "Third Party  Action"),  shall be given  promptly after the action or suit is
commenced;  provided, further, that failure of the Indemnified Party to give the
Indemnitor  prompt  notice in respect of any such Third Party Action as provided
herein shall not relieve the Indemnitor of its obligations hereunder,  except to
the  extent  such  Indemnitor  shall  have been  materially  prejudiced  by such
failure.

                    (b) The Indemnitor  shall be entitled (but not obligated) to
assume the defense or settlement  of such Third Party Action,  or to conduct any
negotiations  or  proceedings  to settle or otherwise  eliminate any Third Party
Claim  and shall  pay the  reasonable  fees and  disbursements  of such  counsel
related to such Third Party Action.  If the Indemnitor  assumes any such defense
or settlement or any such negotiations, it shall pursue such defense, settlement
or  negotiations  in good  faith.  If the  Indemnitor  fails to elect in writing
within 30  Business  Days of the  notification  referred to above to assume such
defense, the Indemnified Party may engage counsel to defend, settle or otherwise

                                       35
<PAGE>








dispose  of such  action  or  proceeding,  which  counsel  shall  be  reasonably
satisfactory to the Indemnitor.  In any such Third Party Action, any Indemnified
Party shall have the right to retain its own counsel,  but the fees and expenses
of such counsel shall be at the expense of such Indemnified Party unless (i) the
Indemnitor and the Indemnified Party shall have mutually agreed to the retention
of such counsel or (ii) the named parties to any such proceeding  (including any
impleaded  parties)  include both the Indemnitor and the  Indemnified  Party and
representation  of both the  Indemnitor  and the  Indemnified  Party by the same
counsel would be inappropriate  due to actual or potential  differing  interests
between them. It is understood that the Indemnitor shall not, in connection with
any Third Party Action or related  Third Party Action in the same  jurisdiction,
be liable for the fees and expenses of more than one separate  firm (in addition
to local  counsel)  for all  Persons to be  indemnified  pursuant to Section 13;
provided that the Indemnitor will be so liable if (x) the Indemnified  Party has
reasonably  concluded that there may be legal  defenses  available to it in such
Third Party Action that are different from or in addition to those  available to
the  Indemnitor  or (y) a conflict  or  potential  conflict  exists  between the
Indemnified  Party and the  Indemnitor in such Third Party Action (in which case
the Indemnitor will not have the right to direct the defense of such Third Party
Action with respect to which such conflict  exists on behalf of the  Indemnified
Party), but only to the extent such fees and expenses are incurred in connection
with such  conflicting  issues.  Any such  separate  firm shall be designated in
writing by the  Indemnified  Party.  The Indemnitor  shall not be liable for any
settlement  of any  proceeding of such Third Party Action  effected  without its
written  consent,  but if the Indemnitor  consents to any such  settlement,  the
Indemnitor  agrees to indemnify the Indemnified  Party from and against any loss
or liability for which  indemnity is available  hereunder and which is specified
in such settlement or judgment.  No Indemnitor shall,  without the prior written
consent  of the  Indemnified  Party  (which  consent  shall not be  unreasonably
withheld  or  delayed),  effect any  settlement  of any  pending  or  threatened
proceeding  in  respect of which any  Indemnified  Party is or could have been a
party and indemnity could have been sought hereunder by such Indemnified  Party,
unless such settlement  includes an  unconditional  release of such  Indemnified
Party  from  all  liability  or  claims  that  are the  subject  matter  of such
proceeding and such settlement only involves the payment of money.

                    (c)  Assignor  shall  be  entitled  in all  cases  (but  not
obligated) to assume the settlement and to conduct  negotiations  or proceedings
to obtain the discharge and release of or otherwise eliminate any Lien set forth
on Schedule  5(h) hereto.  If Assignor  assumes any such  settlement or any such
negotiations,  it shall pursue such  settlement or  negotiations  in good faith.
Assignor  shall not be liable for any  settlement  or discharge of any such Lien
effected  without its  written  consent,  but if  Assignor  consents to any such
settlement or discharge,  Assignor agrees to indemnify Assignee from and against
any loss or liability  for which  indemnity is available  hereunder and which is
specified in such settlement or discharge.

                                       36
<PAGE>








SECTION 15.         Termination

                    This  Agreement  may be  terminated at any time prior to the
first Effective Time to occur pursuant to the terms hereof:

                    (a)    by mutual written consent of Assignee and Assignor;

                    (b) by either party by written  notice to the other party if
the transactions  contemplated hereby have not been consummated on or before the
Outside Date;  provided,  however,  that the right to terminate  this  Agreement
under this Section  15(b) shall not be  available to any party whose  failure to
fulfill any of its obligations under this Agreement has been the cause of or has
resulted  in  the  failure  of  the  transactions   contemplated   hereby  being
consummated on or before the Outside Date; or

                    (c) by (i)  Assignor if (a) Assignor  accepts or  recommends
one or more  Superior  Proposals to its partners or resolves to do either of the
foregoing and (b) Assignee no longer has the right  pursuant to Section 11(c) to
deliver an  Assignee  Acceptance  Notice to  Assignor or (ii) by Assignee if (x)
Assignor has given an SP Notice and (y) at least  fourteen (14) days have passed
since the date on which Assignee's right pursuant to Section 11(c) to deliver an
Assignee Acceptance Notice terminated.

                                       37
<PAGE>








SECTION 16.         Miscellaneous

                    (a)    Notices

                           All   notices,   demands,   declarations   and  other
communications  required  by this  Agreement  shall be in  writing  and shall be
effective  (i) if  given  by  facsimile,  when  transmitted,  (ii) if  given  by
registered or certified mail, three (3) Business Days after being deposited with
the U.S. Postal Service,  (iii) if given by courier,  when received,  or (iv) if
personally delivered, when so delivered, addressed:

                    If to Assignor, to:

                           c/o Polaris Investment Management Corporation
                           201 Mission Street, 27th Floor
                           San Francisco, CA  94105
                           Attention:  President
                           Facsimile Number:

                    With a copy to:

                           c/o Polaris Investment Management Corporation
                           201 High Ridge Road, 1st Floor
                           Stamford, CT  06927-4900
                           Attention:  Portfolio Management
                           Facsimile Number:  (203) 357-4585

or to such  other  address as  Assignor  shall  from time to time  designate  in
writing to Assignee; and

                    If to Assignee, to:

                           Triton Aviation Services III LLC
                           55 Green Street, Suite 500
                           San Francisco, CA  94111
                           Attn:  President
                           Facsimile Number:  (415) 398-9184

or to such other address as Assignee may from time to time  designate in writing
to Assignor.

                                       38
<PAGE>








                    (b)    Headings

                           Headings  used  herein are for  convenience  only and
shall not in any way affect the construction of, or be taken into  consideration
in interpreting, this Agreement.

                    (c)    References

                           Any reference to a specific Section or Section number
shall be  interpreted  as a reference to that Section of this  Agreement  unless
otherwise expressly provided.

                    (d)    GOVERNING LAW

                           THIS AGREEMENT, INCLUDING, WITHOUT LIMITA
TION, THE  INTERPRETATION,  CONSTRUCTION,  VALIDITY AND ENFORCE ABILITY THEREOF,
SHALL BE  CONSTRUED  AND  ENFORCED IN  ACCORDANCE  WITH THE LAWS OF THE STATE OF
CALIFORNIA, EXCLUDING ANY CONFLICT OF LAWS RULES THEREOF.

                    (e)    Severability

                           If any  provision  hereof  should  be  held  invalid,
illegal or  unenforceable  in any  respect  in any  jurisdiction,  then,  to the
fullest extent permitted by law, (i) all other provisions hereof shall remain in
full force and effect in such  jurisdiction  and shall be  construed in order to
carry out the  intentions of the parties hereto as nearly as may be possible and
(ii) such  invalidity,  illegality  or  unenforceability  shall not  affect  the
validity,   legality  or   enforceability   of  such   provision  in  any  other
jurisdiction.

                    (f)    Amendments in Writing

                           No amendment,  modification,  waiver,  termination or
discharge of any provision of this  Agreement,  nor any consent to any departure
by  Assignor  or  Assignee  from any  provision  hereof,  shall in any  event be
effective  unless  the same  shall be in  writing  and  signed by  Assignor  and
Assignee,  and  each  such  amendment,   modification,  waiver,  termination  or
discharge shall be effective only in the specific  instance and for the specific
purpose  for which  given.  No  provision  of this  Agreement  shall be  varied,
contradicted  or  explained  by  any  oral  agreement,   course  of  dealing  or
performance  or any other  matter not set forth in an  agreement  in writing and
signed by Assignor and Assignee.

                                       39
<PAGE>








                    (g)    Expenses

                           Each of Assignor  and Assignee  shall be  responsible
for all fees and expenses  incurred by it, including for legal counsel and other
advisors,  in  connection  with  this  Agreement,  any  Ancillary  Agreement  or
otherwise relating to the transactions  contemplated hereby; provided,  however,
all costs and expenses  incurred in connection  with Special FAA Counsel or with
Special  CAA  Counsel  and all fees and  expenses  payable to the  Escrow  Agent
pursuant  to the  Escrow  Agreement  shall be shared  equally  by  Assignor  and
Assignee;  provided,  further,  if either  Assignor or Assignee  terminates this
Agreement in accordance  with Section 15(c) hereof,  Assignor shall pay or cause
to be paid to Assignee within two (2) Business Days of such termination a fee in
immediately  available  funds in an  amount  equal to one and  one-half  percent
(1.5%) of the Purchase Price.


                    (h)    Execution in Counterparts

                           This Agreement and any amendments,waivers or consents
hereto may be executed by Assignor  and  Assignee in separate  counterparts  (or
upon separate  signature  pages bound  together into one or more  counterparts),
each of which,  when so executed and  delivered,  shall be an original,  but all
such counterparts shall together constitute one and the same instrument.


                    (i)    Entire Agreement

                           This   Agreement   and   the   Ancillary   Agreements
constitute  the entire  agreement of Assignor  and Assignee  with respect to the
subject matter hereof or thereof,  and all prior  understandings  or agreements,
whether  written or oral,  between  Assignor and  Assignee  with respect to such
subject matter are hereby superseded in their entirety.

                    (j)    Exhibits

                           The  exhibits  attached  hereto are  incorporated  by
reference  herein and shall have the same force and effect  with  respect to the
provisions set forth therein as though fully set forth in this Agreement.

                    (k)    Assignment and Successors

                                       40
<PAGE>








                           This   Agreement  may  not  be  assigned   except  by
operation  of law.  This  Agreement  shall be binding  upon,  shall inure to the
benefit  of and  shall  be  enforceable  by  Assignor  and  Assignee  and  their
respective successors.

                    (l)    Confidentiality

                           This  Agreement  and  the  Ancillary  Agreements  are
confidential documents between the parties thereto and shall not be disclosed by
either party to third  parties  without the prior  written  consent of the other
party other than (i) to such party's directors,  officers, employees,  advisors,
auditors,  agents or representatives  who are advised of the confidential nature
of this Agreement and the Ancillary  Agreements  (and for whose  compliance with
the terms hereof, such party shall be liable),  (ii) to the extent disclosure as
required  by any  applicable  law,  regulation  or  judicial  order  or (iii) in
connection  with the  disclosure  requirements  of the  Securities  and Exchange
Commission.  The obligations and protections contained in this Section 16(l) are
in addition to and not a replacement of any obligations and protections provided
pursuant to any  confidentiality  agreement  executed by and currently in effect
between the parties hereto or any of their respective Affiliates.

                                       41
<PAGE>








         IN  WITNESS  WHEREOF,   the  undersigned  have  caused  this  PURCHASE,
ASSIGNMENT AND  ASSUMPTION  AGREEMENT to be duly executed as of the day and year
first written above.


                                POLARIS AIRCRAFT INCOME FUND III

                                By:   Polaris Investment Management Corporation,
                                      General Partner


                                By:    /S/ ERIC DULL
                                      ------------------------------------------
                                Name:  ERIC DULL
                                      ------------------------------------------
                                Title: PRESIDENT
                                      ------------------------------------------



                                TRITON AVIATION SERVICES III LLC


                                By:  Triton Aviation Services Limited, Manager



                                By:    /S/ JOHN E. FLYNN
                                      ------------------------------------------
                                Name: JOHN E. FLYNN
                                      ------------------------------------------
                                Title: PRESIDENT
                                      ------------------------------------------



                                ESCROW AGREEMENT

                  ESCROW  AGREEMENT, dated as of June 4, 1997, (the "Agreement")
by and among POLARIS AIRCRAFT INCOME FUND III, a California limited  partnership
("Polaris"),  TRITON AVIATION  SERVICES III LLC, a California  limited liability
company ("Triton") and Bankers Trust Company, a New York banking corporation (as
escrow agent hereunder, the "Escrow Agent").

                              W I T N E S S E T H:

                  WHEREAS, the parties hereto, other than the Escrow Agent, have
entered into a Purchase,  Assignment and Assumption  Agreement dated as of April
1, 1997 (the "Purchase  Agreement") pursuant to which Polaris has agreed to sell
to Triton and Triton has agreed to purchase from  Polaris,  certain  assets,  as
provided therein (the "Assets"); and

                  WHEREAS,  pursuant  to  Section 4 of the  Purchase  Agreement,
Polaris  and  Triton  have  agreed  that  Triton  shall  deposit  or cause to be
deposited  the  purchase  price  for  the  Assets,  to be  held  in  escrow  and
distributed  in  accordance  with the  terms of this  Escrow  Agreement  and the
Purchase Agreement; and

                  WHEREAS,  the Escrow Agent is willing to serve as escrow agent
and hold the Escrowed  Property (as hereinafter  defined) in accordance with the
terms and conditions hereof.

                  NOW,  THEREFORE,  for good  and  valuable  consideration,  the
receipt  and  adequacy of which are hereby  acknowledged  by each of the parties
hereto,  the parties  hereto,  intending to be legally bound, do hereby agree as
follows:

                  1.  Appointment  of Escrow  Agent.  Polaris and Triton  hereby
appoint  Bankers Trust Company as escrow agent in accordance  with the terms and
conditions  set  forth  herein,   and  the  Escrow  Agent  hereby  accepts  such
appointment.

                  2. Deposit into the Escrow Fund. Triton,  simultaneously  with
the  execution  and delivery of this  Agreement,  has  deposited or caused to be
deposited  with  the  Escrow  Agent  the  sum of  $1,234,289  (of  which  $1,000
represents  one-half of the Escrow  Fees (as defined in  paragraph 8 hereof)) in
immediately  available funds  (together with any interest  earned  thereon,  the
"Escrowed  Property"),  the receipt of which will be  acknowledged by the Escrow
Agent,  and which  Escrowed  Property shall be held by the Escrow Agent upon the
terms and conditions hereinafter set forth.
<PAGE>




                 3.       Deposit of Escrowed Property.

                  (a) During  the term of this  Agreement,  the Escrow  Agent is
hereby  directed to deposit the  Escrowed  Property  and any  interest or income
earned thereon in the BT Institutional Cash Management Fund.

                  (b) The Escrow Agent shall not have any liability for any loss
sustained as a result of any investment made as provided above,  any liquidation
of any such  investment  prior to its maturity,  or the failure of an authorized
person of the Company to give the Escrow Agent any written instruction to invest
or reinvest the Escrowed Funds or any earnings thereon.

                  4.       Distribution of Escrowed Property.

                  (a) The Escrow Agent shall hold the  Escrowed  Property in its
possession  until instructed  hereunder to deliver the Escrowed  Property or any
specified portion thereof as provided in paragraph 4(b) below.

                  (b)  At  such  time  as  Polaris  delivers  a  written  notice
substantially  in the form of Exhibit A hereto  (the  "Release  Notice")  to the
Escrow Agent,  signed by an authorized  representative of Polaris,  stating that
the  requirements  under the  Purchase  Agreement  for  release of the  Escrowed
Property have been met, the Escrow Agent shall  promptly  disburse to Polaris to
the account specified by Polaris in the Release Notice,  the amount set forth in
the Release  Notice  (which  amount shall be the Cash Amount,  as defined in the
Purchase  Agreement),  less  one-half of the Escrow  Fees  payable to the Escrow
Agent  hereunder,  and shall  disburse the balance of the  Escrowed  Property to
Triton to an account specified by Triton to the Escrow Agent.

                  (c) The  Escrow  Agent is  acting as a  stakeholder  only with
respect to the Escrowed Property. If any dispute arises as to whether the Escrow
Agent is obligated  to deliver the Escrowed  Property or as to whom the Escrowed
Property is to be delivered or the amount thereof, the Escrow Agent shall not be
required to make any  delivery,  but in such event the Escrow Agent may hold the
Escrowed  Property until receipt by the Escrow Agent of instructions in writing,
signed by all parties  which have, or claim to have, an interest in the Escrowed
Property,  directing the disposition of the Escrowed Property, or in the absence
of such  authorization,  the Escrow Agent may hold the Escrowed  Property  until
receipt  of a  certified  copy  of a final  judgment  of a  court  of  competent
jurisdiction  providing for the disposition of the Escrowed Property. The Escrow
Agent may require,  as a condition to the  disposition of the Escrowed  Property
pursuant to written instructions, indemnification and/or opinions of counsel, in
form and substance  satisfactory to the Escrow Agent,  from each party providing
such instructions.  If such written  instructions,  indemnification and opinions
are not received,  or  proceedings  for such  determination  are not  commenced,
within 30 days after  receipt by the Escrow  Agent of notice of any such dispute



                                        2


<PAGE>




and diligently continued,  or if the Escrow Agent is uncertain as to which party
or parties are  entitled to the Escrowed  Property,  the Escrow Agent may either
(i) hold the Escrowed  Property until receipt of such written  instructions  and
indemnification  or a certified copy of a final judgment of a court of competent
jurisdiction  providing for the  disposition of the Escrowed  Property,  or (ii)
deposit  the  Escrowed  Property  in  the  registry  of  a  court  of  competent
jurisdiction;  provided, however, that notwithstanding the foregoing, the Escrow
Agent may,  but shall not be required to,  institute  legal  proceedings  of any
kind.

                  5.  Resignation  of Escrow Agent.  The Escrow Agent may resign
and be discharged from its duties hereunder at any time by giving written notice
of  such  resignation  to  Polaris  and  Triton  specifying  a  date  when  such
resignation  shall take effect and upon delivery of the Escrowed Property to the
successor  escrow agent  designated by all parties hereto (other than the Escrow
Agent) in writing. Upon such notice, a successor escrow agent shall be appointed
with the mutual consent of Polaris and Triton. Such successor escrow agent shall
become the escrow agent  hereunder upon the  resignation  date specified in such
notice.  If Polaris and Triton are unable to agree upon a successor escrow agent
within thirty (30) days after such notice, the Escrow Agent shall be entitled to
apply to a court of competent  jurisdiction  for the appointment of a successor.
The Escrow Agent shall continue to serve until its successor  accepts the escrow
and receives the Escrowed  Property.  Polaris and Triton shall have the right at
any time upon their  mutual  consent to  substitute a new Escrow Agent by giving
notice  thereof  to the Escrow  Agent  then  acting.  Upon its  resignation  (or
replacement)  and  delivery  of the  Escrowed  Property  as set  forth  in  this
Paragraph  5,  the  Escrow  Agent  shall be  discharged  of and from any and all
further  obligations  arising in connection with the escrow contemplated by this
Agreement.

                  6.        Indemnification of Escrow Agent.

                  (a)  The  Escrow  Agent  shall   exercise   ordinary  care  in
fulfilling its duties and obligations hereunder.  The Escrow Agent shall have no
duties or  responsibilities  whatsoever  with respect to the  Escrowed  Property
except as are specifically  set forth herein.  The Escrow Agent shall neither be
responsible  for or  under,  nor  chargeable  with  knowledge  of the  terms and
conditions  of  any  other  agreement,  instrument  or  document  in  connection
herewith.  Except as otherwise  provided in  subsection  (b) hereof,  the Escrow
Agent  may  conclusively  rely  upon,  and  shall  be fully  protected  from all
liability,  loss, cost,  damage or expense in acting or omitting to act pursuant
to any written notice,  instrument,  request,  consent,  certificate,  document,
letter, telegram,  opinion, order, resolution or other writing hereunder without
being required to determine the  authenticity of such document,  the correctness
of any  fact  stated  therein,  the  propriety  of the  service  thereof  or the
capacity,  identity or authority of any party purporting to sign or deliver such
document.  The Escrow Agent shall have no responsibility for the contents of any
such writing contemplated herein and may conclusively rely without any liability
upon the contents thereof.




                                        3


<PAGE>



                  (b) The Escrow  Agent shall not be liable for any action taken
or omitted by it in good faith and  reasonably  believed by it to be  authorized
hereby or with the rights or powers conferred upon it hereunder,  nor for action
taken or omitted by it in good faith,  and in accordance  with advice of counsel
(which  counsel  may be of the Escrow  Agent's own  choosing),  and shall not be
liable for any mistake of fact or error of judgment or for any acts or omissions
of any kind except for its own willful misconduct or negligence.

                  (c)  Polaris  and Triton  agree  severally  and not jointly to
indemnify the Escrow Agent and its employees, directors, officers and agents and
hold each harmless against any and all liabilities incurred by it hereunder as a
consequence of such party's action,  and both Polaris and Triton agree severally
and not jointly to indemnify  the Escrow Agent and hold it harmless  against any
and all liabilities incurred by it and them hereunder that are not a consequence
of any party's  action,  except in either case for  liabilities  incurred by the
Escrow  Agent  resulting  from its own  willful  misconduct  or  negligence.  In
connection  therewith,  Polaris  and Triton  shall each be liable for 50% of any
such liabilities.

                  7.  Compensation  of Escrow  Agent.  The Escrow Agent shall be
entitled to payment for customary fees and expenses for all services rendered by
it hereunder in accordance with Schedule B attached hereto (as such schedule may
be amended from time to time by Polaris,  Triton and the Escrow Agent)  ("Escrow
Fees").  The Escrow Agent shall also be entitled to  reimbursement on demand for
all reasonable loss, liability, damage or expenses paid or incurred by it in the
administration  of its duties  hereunder,  including,  but not  limited  to, all
reasonable  counsel,  advisors' and agents' fees and disbursements and all taxes
or other governmental charges.

                  8. Further Assurances. From time to time on and after the date
hereof,  the other parties  hereto shall deliver or cause to be delivered to the
Escrow Agent such further documents and instruments and shall do and cause to be
done such further acts as the Escrow  Agent shall  reasonably  request (it being
understood  that the  Escrow  Agent  shall have no  obligation  to make any such
request)  to carry out more  effectively  the  provisions  and  purposes of this
Agreement,  to  evidence  compliance  herewith  or to assure  itself  that it is
protected in acting hereunder.

                  9. Termination of Agreement. This Agreement shall terminate on
the final  disposition of the Escrowed  Property provided that the rights of the
Escrow Agent and the  obligations  of the other parties  hereto under Sections 6
and 7 shall survive the termination hereof and the resignation or removal of the
Escrow Agent.



                                        4




<PAGE>




                  10. Consents to Service of Process. Each of the parties hereto
hereby  irrevocably  consents to the  jurisdiction of the courts of the State of
New York and of any Federal  Court  located in the Borough of  Manhattan in such
State in connection with any action,  suit or other proceeding arising out of or
relating to this Agreement or any action taken or omitted hereunder,  and waives
any claim of forum non conveniens and any objections as to laying of venue. Each
party further waives personal service of any summons, complaint or other process
and agrees that the service  thereof may be made by certified or registered mail
directed  to such  person at such  person's  address  for  purposes  of  notices
hereunder.

                  11.   Waiver.   THE   PARTIES   TO   THIS   AGREEMENT   HEREBY
UNCONDITIONALLY  WAIVE THEIR  RESPECTIVE  RIGHTS TO A JURY TRIAL OF ANY CLAIM OR
CAUSE OF ACTION  BASED UPON OR ARISING  OUT OF,  DIRECTLY  OR  INDIRECTLY,  THIS
AGREEMENT, ANY OF THE RELATED DOCUMENTS, ANY DEALINGS AMONG THEM RELATING TO THE
SUBJECT  MATTER OF THIS  TRANSACTION  OR ANY  RELATED  TRANSACTIONS,  AND/OR THE
RELATIONSHIP  THAT IS BEING  ESTABLISHED AMONG THEM. THE SCOPE OF THIS WAIVER IS
INTENDED TO BE ALL ENCOMPASSING OF ANY AND ALL DISPUTES THAT MAY BE FILED IN ANY
COURT (INCLUDING,  WITHOUT LIMITATION,  CONTRACT CLAIMS, TORT CLAIMS,  BREACH OF
DUTY CLAIMS,  AND ALL OTHER  COMMON LAW AND  STATUTORY  CLAIMS).  THIS WAIVER IS
IRREVOCABLE MEANING THAT IT MAY NOT BE MODIFIED EITHER ORALLY OR IN WRITING, AND
THE WAIVER SHALL APPLY TO ANY SUBSEQUENT  AMENDMENTS,  RENEWALS,  SUPPLEMENTS OR
MODIFICATIONS  TO  THIS  AGREEMENT,  AND  RELATED  DOCUMENTS,  OR TO  ANY  OTHER
DOCUMENTS OR  AGREEMENT,  AND RELATED  DOCUMENTS,  OR TO ANY OTHER  DOCUMENTS OR
AGREEMENTS RELATING TO THIS TRANSACTION OR ANY RELATED TRANSACTION. In the event
of litigation,  this  Agreement may be filed as a written  consent to a trial by
the court.

                  12.      Miscellaneous.

                  (a)  This   Agreement   embodies  the  entire   agreement  and
understanding  among these parties relating to the subject matter hereof except,
as to Polaris and Triton, the Purchase Agreement.

                  (b) All notices and other  communications under this Agreement
shall be in writing and shall be deemed given when delivered personally,  on the
next Business Day after delivery to a recognized  overnight courier or when sent
by facsimile to the parties (which facsimile copy shall be followed, in the case
of notices or other  communications sent to the Escrow Agent, by a hard copy) at
the following  addresses (or to such other address as a party may have specified
by notice given to the other parties pursuant to this provision);



                                        5



<PAGE>




                  If to Polaris, to:

                  c/o Polaris Investment Management Corporation
                  201 Mission Street, 27th Floor
                  San Francisco, California 94105
                  Attention:  President
                  Facsimile Number:  (415) 284-7460

                  With a copy to:

                  c/o Polaris Investment Management Corporation
                  201 High Ridge Road
                  Stamford, Connecticut  06927-4900
                  Attention:  Portfolio Management
                  Facsimile Number:  (203) 357-4585

                  If to Triton, to:

                  Triton Aviation Services III LLC
                  55 Green Street
                  San Francisco, California 94111
                  Attention:  President
                  Facsimile Number:  (415) 398-9184

                  If to the Escrow Agent, to:

                  Bankers Trust Company
                  Corporate Trust and Agency Group
                  Four Albany Street
                  New York, New York  10006
                  Attention:  Corporate Market Services
                  Facsimile Number:  (212) 250-6961/6392

                  (c) The headings of the Paragraphs of this Agreement have been
inserted  for  convenience  and shall not  modify,  define,  limit or expand the
express provisions of this Agreement.

                  (d) This Agreement and the rights and obligations hereunder of
parties hereto may not be assigned  except with the prior written consent of the



                                        6




<PAGE>





other  parties  hereto.  This  Agreement  shall be binding upon and inure to the
benefit of each party's respective  successors and permitted assigns.  Except as
expressly  provided  herein,  no other person  shall  acquire or have any rights
under or by virtue of this  Agreement.  This Agreement is intended to be for the
sole  benefit of the parties  hereto,  and  (subject to the  provisions  of this
Paragraph  12(d))  their  respective  successors  and  assigns,  and none of the
provisions of this  Agreement are intended to be, nor shall they be construed to
be, for the benefit of any third person.

                  (e)  This  Agreement  may  not  be  amended,  supplemented  or
otherwise modified without the prior written consent of the parties hereto.

                  (f)  The  Escrow  Agent  makes  no  representation  as to  the
validity,  value,  genuineness  or the  collectability  of any security or other
document or instrument held by or delivered to it.

                  (g) The Escrow  Agent  shall not be called  upon to advise any
party as to the wisdom in selling or retaining or taking or refraining  from any
action with respect to any securities or other property deposited hereunder.

                  (h) Any payments of income from the Escrowed Property shall be
subject to withholding  regulations  then in force with respect to United States
taxes.  Each of  Polaris  and Triton  will  provide  the  Escrow  Agent with its
Employer  Identification Number for use by the Escrow Agent if necessary.  It is
understood that the Escrow Agent shall be responsible for income  reporting only
with  respect  to  income  earned  on the  Escrowed  Property  and  will  not be
responsible for any other reporting.

                  (i) This  Agreement  shall be  governed  by and  construed  in
accordance  with  laws  of  the  State  of New  York  without  reference  to the
principles of conflict of laws.

                  (j)  This   Agreement   may  be   executed   in  two  or  more
counterparts,  each of which  shall be an  original,  but all of which  together
shall constitute one and the same instrument.

                  (k)  Time  is of the  essence  in  each  and  every  term  and
provision of this Agreement.

                  (l) In the event that the  interpretation  of any provision of
this  Agreement  conflicts  in any way with any  other  provision  of any  other
document related to the transactions contemplated herein, then the provisions of
this  Agreement  shall be  controlling  between  these  parties  and  will  take
precedence.



                                        7




<PAGE>





                  (m) For purposes of this Agreement,  "Business Day" shall mean
any day that is not a Saturday or a day on which banks are required or permitted
by law or executive order to be closed in The City of New York.



                                       8



<PAGE>




                  IN WITNESS  WHEREOF,  the parties  hereto have  executed  this
Agreement as of the day and year first above written.


                                   POLARIS AIRCRAFT INCOME
                                    FUND III

                                   By:   Polaris Investment Management
                                         Corporation, General Partner

                                         By:/S/MARY DUNNE
                                            ---------------------------
                                            Name:  MARY DUNNE
                                            Title: ATTORNEY IN FACT


                                   TRITON AVIATION SERVICES III LLC

                                   By:  Triton Aviation Services Limited,
                                        Manager

                                        By:/S/CHARLES F. HORNECKER
                                           ----------------------------
                                           Name:  CHARLES F. HORNECKER
                                           Title: ATTORNEY IN FACT


                                   BANKERS TRUST COMPANY

                                   By:/S/KEVIN WEEKS
                                      ---------------------------------
                                      Name:  KEVIN WEEKS
                                      Title: ASSISTANT TREASURER



                                        9




<PAGE>






                                   Schedule A

                                Schedule of Fees
                                  Prepared For
                                Escrow Agreement


         A.       Acceptance Fee:  $2,000 one time fee.
                           (Includes   acceptance  of  appointment,   review  of
                           documentation,  establishment of account and records.
                           This fee is  intended  to cover costs and set up of a
                           standard   escrow   agreement.    Any   escrow   that
                           substantially  alters  the agreement  may incur addi-
                           tional  costs which would be billed as an  acceptance
                           fee.)

         B.       Annual Administrative Fee:  None.
                           (Payable   annually  in  advance.   Includes   normal
                           administrative    duties   as   stipulated   in   the
                           agreement.)

         C.       Investment Transactions:  None.
                           (Covers  all  costs   associated  with  investing  in
                           eligible  investments at the direction of the client,
                           including ticket charges, custody and tax reporting.)

         D.       Wire Transfer Fee:  None.
                           (Pertains to outgoing wires only.)

         The  fees  set  forth  in  this  schedule  are  subject  to  review  of
         documentation. The fees are also subject to change should circumstances
         warrant.  As provided in the Escrow  Agreement,  reimbursement  for all
         out-of-pocket  expenses,  disbursements and fees of counsel  (including
         their  disbursements  and expenses)  incurred in the performance of the
         Escrow Agent's duties will be added to billed fees. Once appointed,  if
         the deal  should  fail to close for  reasons  beyond  our  control,  we
         reserve  the  right to  charge a fee not to  exceed  the  amount of our
         acceptance fee, and we will require reimbursement in full for our legal
         fees and any out-of-pocket expenses related to the deal.

         Fees  for any  services  not  specifically  covered  in  this or  other
         applicable  schedules  will  be  based  on  an  appraisal  of  services
         rendered.







<PAGE>






                                    Exhibit A
                                 Release Notice


                  Pursuant to Paragraph 4(b) of the Escrow  Agreement  dated May
__,  1997 (the  "Escrow  Agreement")  among  Polaris  Aircraft  Income  Fund III
("Polaris"),  Triton  Aviation  Services III LLC  ("Triton")  and Bankers  Trust
Company, as escrow agent (the "Escrow Agent"),  the undersigned hereby certifies
that the requirements  under the Purchase  Agreement for release of the Escrowed
Property  have been met and directs the Escrow  Agent to promptly  disburse  the
Escrowed Property (as defined in the Escrow Agreement) as follows:

                  (i)      $__________ to Polaris to [account information]; and

                  (ii)  the  balance  of the  Escrowed  Property  to an  account
specified by Triton.

                  IN WITNESS WHEREOF,  the undersigned has executed this Release
Notice this __ day of ________, 19__.


                                    POLARIS AIRCRAFT INCOME FUND III

                                    By:  Polaris Investment Management
                                         Corporation, general partner

                                         By:
                                          Name:
                                          Title:







<PAGE>






                                    Exhibit B
                        Receipt of Funds by Escrow Agent


                  BANKERS  TRUST  COMPANY,  a New York banking  corporation,  as
escrow agent (the "Escrow Agent") under that certain Escrow  Agreement dated May
__,  1997 (the  "Escrow  Agreement")  among  Polaris  Aircraft  Income  Fund III
("Polaris"),  Triton Aviation Services III LLC ("Triton"), and the Escrow Agent,
hereby  acknowledges  receipt  from  Triton,  by wire  transfer  of  immediately
available  funds to the account  specified by the Escrow Agent, of the aggregate
amount  of  [$__________],  to be held in  escrow  pursuant  to the terms of the
Escrow Agreement.


Dated:  __________, 1997


                                BANKERS TRUST COMPANY,
                                 as Escrow Agent

                                By:
                                 Name:
                                 Title:


                          PLEDGE AND SECURITY AGREEMENT


               PLEDGE AND SECURITY  AGREEMENT,  dated as of April 1, 1997, among
Triton  Aviation  Services  III LLC,  a  California  limited  liability  company
("Borrower"),  Triton Aviation Services Limited, a Bermuda corporation ("TASL"),
the other parties  executing the signature  pages hereto as pledgors  (Borrower,
TASL,  and  such  other  parties,  collectively,  "Pledgors"  and  each  of them
individually  a "Pledgor")  and Polaris  Aircraft  Income Fund III, a California
limited partnership ("Lender").

                                R E C I T A L S:

               WHEREAS, Pledgors are the sole members of Borrower; and

               WHEREAS,  Pledgors  are the record and  beneficial  owners of the
membership  interests described in Schedule I hereto (the "Pledged Interests" of
each such Pledgor) issued by Borrower; and

               WHEREAS,   Borrower  has  executed  and  delivered  to  Lender  a
Promissory Note (as the same may be amended,  modified or supplemented from time
to time,  the  "Note"),  pursuant to the  Purchase,  Assignment  and  Assumption
Agreement, dated as of April 1, 1997 (the "Purchase Agreement"),  between Lender
and Borrower; and

               WHEREAS,  Pledgors, as the sole members of Borrower,  will derive
substantial   direct  and  indirect   economic  benefit  from  the  transactions
contemplated  by the Purchase  Agreement and the delivery of the Note to Lender;
and

               WHEREAS,  in connection with the making of the Purchase Agreement
and the delivery of the Note and as security for all of the Obligations,  Lender
is requiring  that Pledgors  shall have  executed and delivered  this Pledge and
Security Agreement and granted the security interest contemplated hereby;

               NOW,  THEREFORE,   in  consideration  of  the  premises  and  the
covenants  hereinafter contained the receipt and sufficiency of which are hereby
agreed and  acknowledged  and to induce  Lender to provide the seller  financing
evidenced by the Note, it is agreed as follows:



<PAGE>



1. Definitions.  Unless otherwise defined herein,  terms defined in the Note are
used herein as therein defined,  and the following shall have (unless  otherwise
provided  elsewhere in this Agreement) the following  respective  meanings (such
meanings  being  equally  applicable to both the singular and plural form of the
terms defined):

               "Additional  Holder" shall have the meaning assigned to such term
in Section 7(d) hereof.

               "Agreement"  shall  mean  this  Pledge  and  Security  Agreement,
including all  amendments,  modifications  and  supplements  and any exhibits or
schedules to any of the foregoing, and shall refer to this Agreement as the same
may be in effect at the time such reference becomes operative.

               "Ancillary  Agreements"  shall have the meaning assigned to it in
the Purchase Agreement.

               "Bankruptcy  Code" shall mean title 11,  United  States Code,  as
amended from time to time, and any successor statute thereto

               "Equity  Dividend  Amount" means, (i) for any calendar month that
ends prior to the first Effective Time to occur under the Purchase Agreement, an
amount  equal to  $15,349  and (ii) for the  calendar  month in which  the first
Effective  Time occurs under the Purchase  Agreement and for each calendar month
thereafter,  the Purchase  Agreement,  an amount  equal to $25,581,  and for any
period  that is less than a  calendar  month,  a  proportionate  amount  thereof
calculated  using the same  proportion  that the  number of days in such  period
bears to thirty days.

               "General  Intangibles"  shall mean all "general  intangibles"  as
such term is defined in Section 9-106 of the Uniform  Commercial Code, now owned
or hereafter  acquired by any Pledgor relating to the collateral of such Pledgor
pledged hereby.

               "Governmental  Authority"  shall  mean  (a) any  federal,  state,
provincial or similar government,  and any body, board, department,  commission,
court,  tribunal,  author  ity,  agency  or  other  instrumentality  of any such
government  or  otherwise  exercising  any  executive,  legislative,   judicial,
administrative  or  regulatory  functions  of such  government  or (b) any other
government  entity  having  jurisdiction  over any matter  contemplated  by this
Agreement,  the Purchase Agreement or any other Ancillary Agreements or relating
to the observance or performance of the obligations of any of the parties hereto
or thereto.



                                        2



<PAGE>



               "Interests" shall mean all shares, options,  warrants, general or
limited partnership  interests,  membership  interests,  participations or other
equivalents (regardless of how designated) of or in a corporation,  partnership,
limited  liability  company or equivalent  entity  whether  voting or nonvoting,
including,  without  limitation,  common stock,  preferred  stock,  or any other
"equity  security"  (as such term is defined in Rule 3a11-1 of the General Rules
and Regulations  promulgated by the Securities and Exchange Commission under the
Securities Exchange Act of 1934, as amended).

               "Keep Well" shall mean that certain Keep Well Agreement, dated as
of the date hereof, among TASL, Borrower and Lender.

               "Keep Well  Guaranty"  shall  mean that  certain  Guaranty  (Keep
Well), dated as of the date hereof, among TIL, Lender and Borrower.

               "Loan   Guaranty"   shall  mean  that   certain   Guaranty   (SPV
Indebtedness), dated as of the date hereof, between TIL and Borrower.

               "Obligations"  shall  mean  (i)  all  loans,   advances,   debts,
liabilities and  obligations,  for monetary amounts (whether or not such amounts
are liquidated or determinable)  owing by Borrower to Lender,  and all covenants
and duties  regarding  such amounts,  of any kind or nature,  present or future,
whether or not  evidenced by any note,  agreement or other  instrument,  arising
under the Purchase  Agreement or the Note  including,  without  limitation,  all
interest, fees, charges, expenses,  attorneys' fees and any other sum chargeable
to Borrower under the Purchase  Agreement or the Note,  (ii) all  obligations of
any kind or nature,  present or future,  of TASL under the Keep Well,  (iii) all
obligations of any kind or nature, present or future, of TIL under the Keep Well
Guaranty and (iv) all obligations of any kind or nature,  present or future,  of
TIL under the Loan Guaranty.

               "Person"  shall  mean  any   individual,   sole   proprietorship,
partnership,  limited liability company,  joint venture,  trust,  unincorporated
organization, association, corporation, institution, public benefit corporation,
entity or  government  (whether  Federal,  state,  county,  city,  municipal  or
otherwise, including, without limitation, any instrumentality, division, agency,
body or department thereof).


               "Pledged Collateral" shall have the meaning assigned to such term
in Section 2 hereof.



                                        3



<PAGE>



               "Pledged  Interests" shall have the meaning assigned to such term
in the recitals hereof.

               "Secured  Obligations"  shall have the  meaning  assigned to such
term in Section 3 hereof.

               "Termination  Date" shall mean the date on which all determinable
and liquidated Obligations have been completely discharged.

               "TIL"  shall  mean   Triton   Investments   Limited,   a  Bermuda
corporation.

               "Transferee"  shall  have the  meaning  assigned  to such term in
Section 7(d) hereof.

               "Uniform  Commercial Code" shall mean the Uniform Commercial Code
as the same  may,  from time to time,  be in effect in the State of  California;
provided,  however, in the event that, by reason of mandatory provisions of law,
any or all of the  attachment,  perfection  or  priority  of  Lender's  security
interest in any  Collateral  is governed  by the Uniform  Commercial  Code as in
effect in a jurisdiction other than the State of California,  Uniform Commercial
Code  shall  mean  the  Uniform  Commercial  Code as in  effect  in  such  other
jurisdiction for purposes of the provisions  hereof relating to such attachment,
perfec  tion or  priority  and  for  purposes  of  definitions  related  to such
provisions.

               2.     Pledge.  Each Pledgor hereby pledges to Lender, and grants
to Lender, a first  priority security  interest  in, all of  the following  (the
"Pledged Collateral"):

               (a) in the case of each Pledgor other than Borrower,  the Pledged
Interests of such Pledgor and all dividends,  distributions,  cash,  instruments
and other  property  or  proceeds  from  time to time  received,  receivable  or
otherwise distributed by Borrower in respect of or in exchange for any or all of
the  Pledged  Interests  of  such  Pledgor;  provided,   however,  that  Pledged
Collateral  shall not  include  any  distributions  made by  Borrower  which are
permitted to be made by it under Section 7(b) hereof;

               (b)  in the  case  of  each  Pledgor  other  than  Borrower,  all
additional  Interests  issued by Borrower  to such  Pledgor or from time to time
acquired by such Pledgor in any manner  (which  Interests  shall be deemed to be
part of the Pledged Interests), and the certificates,  if any, representing such
additional Interests,  and all dividends,  distributions,  cash, instruments and



                                        4



<PAGE>



other property or proceeds from time to time  received,  receivable or otherwise
distributed in respect of or in exchange for any or all of such Interests;

               (c)    in the case of Borrower,  all rights  under the Keep Well,
the Keep Well Guaranty and the Loan Guaranty;

               (d)    in the case of each Pledgor, all General Intangibles; and

               (e)    all proceeds of any of the foregoing.

               3. Security for  Obligations.  This  Agreement  secures,  and the
Pledged Collateral is security for, the prompt payment in full when due, whether
at stated  maturity,  by  acceleration  or  otherwise,  and  performance  of the
Obligations, whether for principal, premium, interest, fees, costs and expenses,
and all  obligations of Pledgors now or hereafter  existing under this Agreement
(collectively, the "Secured Obligations").

               4.  Delivery of Pledged  Collateral.  All  certificates,  if any,
representing or evidencing the Pledged  Interests shall be delivered to and held
by or on behalf of  Lender  pursuant  hereto  and shall be  accompanied  by duly
executed  instruments  of  transfer  or  assignment  in  blank,  all in form and
substance  satisfactory  to Lender.  Lender shall have the right, at any time in
its discretion and without notice to Pledgors,  to transfer to or to register in
the  name of  Lender  or any of its  nominees,  as  pledgees,  any or all of the
Pledged  Interests.  In  addition,  Lender  shall  have the right at any time to
exchange   certificates  or  instruments   representing  or  evidencing  Pledged
Interests for certificates or instruments of smaller or larger denominations.

               5.     Representations and Warranties.  Each  Pledgor  represents
and warrants to Lender that:

               (a) Such  Pledgor  is, and at the time of delivery of the Pledged
Interests  to Lender  pursuant  to Section 4 hereof  will be, the sole holder of
record and the sole beneficial owner of the Pledged  Collateral  pledged by such
Pledgor  free and clear of any Lien  thereon  or  affecting  the title  thereto,
except for the Lien created by this Agreement.

               (b) All of the Pledged  Interests  of such Pledgor have been duly
authorized, validly issued and are fully paid and nonassessable.



                                        5



<PAGE>



               (c) Such Pledgor has the right and requisite authority to pledge,
assign,  transfer,  deliver, deposit and set over the Pledged Collateral pledged
by such Pledgor to Lender as provided herein.

               (d) None of the Pledged Interests of such Pledgor has been issued
or  transferred  in  violation  of  the  securities   registration,   securities
disclosure  or  similar  laws of any  jurisdiction  to which  such  issuance  or
transfer may be subject.

               (e) As of the date hereof, the authorized, issued and outstanding
Interests  of  Borrower  consist  solely of the  membership  interests  that are
described  in Schedule I hereto.  As of the date  hereof,  there are no existing
options,  warrants, calls or commitments of any character whatsoever relating to
any Interests of Borrower other than as set forth on Exhibit A hereto.

               (f) No  consent,  approval,  authorization  or other order of any
Person  and no  consent,  authorization,  approval,  or other  action by, and no
notice to or filing  with,  any  Governmental  Authority,  other than as already
obtained,  given or filed,  is required by Pledgor  either (i) for the pledge by
such  Pledgor of the Pledged  Collateral  pursuant to this  Agreement or for the
execution, delivery or performance of this Agreement or the Ancillary Agreements
to which such  Pledgor is a party,  by such  Pledgor or (ii) for the exercise by
Lender of the  voting or other  rights  provided  for in this  Agreement  or the
remedies in respect of the Pledged Collateral pursuant to this Agreement, except
as may be required in connection  with such  disposition  by laws  affecting the
offering and sale of securities generally.

               (g) The pledge, assignment and delivery of the Pledged Collateral
pursuant to this  Agreement  will create a valid  first  priority  lien on and a
first priority  perfected security interest in the Pledged Collateral pledged by
such  Pledgor,  and the  proceeds  thereof,  securing the payment of the Secured
Obligations.

               (h) This  Agreement  and the  Ancillary  Agreements to which such
Pledgor is a party have been duly  authorized,  executed  and  delivered by such
Pledgor and  constitute  legal,  valid and binding  obligations  of such Pledgor
enforceable  in accordance  with their terms,  except as  enforceability  may be
limited by bankruptcy, insolvency, or other similar laws affecting the rights of
creditors generally or by the application of general equity principles.

               (i)    Borrower has no subsidiaries.



                                        6



<PAGE>



               The  representations  and  warranties set forth in this Section 5
shall survive the execution and delivery of this Agreement.


               6.     Covenants.

               (a) Each Pledgor jointly and severally  covenants and agrees that
until the Termination Date:

                      (i) Subject to Section  7(d),  without  the prior  written
        consent of Lender, such Pledgor will not sell, assign, transfer,  pledge
        or otherwise  encumber any of its rights in or to the Pledged Collateral
        pledged by such Pledgor or any unpaid  dividends or other  distributions
        or payments with respect thereto or grant a Lien in any therein.

                      (ii) Such Pledgor will, at its expense,  promptly execute,
        acknowledge and deliver all such instruments and take all such action as
        Lender  from time to time may  reasonably  request in order to ensure to
        Lender  the  benefits  of the  Liens  in and to the  Pledged  Collateral
        intended to be created by this  Agreement,  including  the filing of any
        necessary  Uniform  Commercial Code financing  statements,  which may be
        filed by Lender with or without the signature of such Pledgor,  and will
        cooperate  with Lender,  at such  Pledgor's  expense,  in obtaining  all
        necessary  governmental approvals and making all necessary filings under
        federal  or  state  law in  connection  with  such  Liens or any sale or
        transfer of the Pledged Collateral.

                      (iii) Such  Pledgor  has and will  defend the title to the
        Pledged  Collateral and the Liens of Lender thereon against the claim of
        any  Person  and  will  maintain  and  preserve  such  Liens  until  the
        Termination Date.

                      (iv) Each of  them will,  upon  obtaining  any  additional
        Interest of Borrower,  which Interest is not already Pledged Collateral,
        promptly  (and in any event within three (3) business  days)  deliver to
        Lender  a  Pledge   Amendment,   duly  executed  by  such  Pledgor,   in
        substantially the form of Schedule II hereto (a "Pledge Amendment"),  in
        respect  of the  additional  Pledged  Interests  which are to be pledged
        pursuant to this  Agreement.  Each Pledgor hereby  authorizes  Lender to
        attach  each  Pledge  Amendment  to this  Agreement  and agrees that all
        Pledged  Interests  listed on any Pledge  Amendment  delivered to Lender
        shall for all purposes hereunder be considered Pledged Collateral.



                                        7



<PAGE>



                      (v) None of them will take any  action to amend,  alter or
        change Borrower's articles of organization or operating agreement (other
        than amendments  permitted under the Note), the Keep Well, the Keep Well
        Guaranty or the Loan Guaranty or permit  Borrower to repeal its articles
        of organization.

                      (vi)  None  of  them  will  take  any  action  that  would
        authorize  or permit  Borrower to take any of the actions  specified  in
        Paragraph 2.4 of its operating agreement.

                      (vii)  TASL  covenants  and  agrees  that  it  will  cause
        Borrower  to  comply  with the  terms of and  limitations  contained  in
        Borrower's articles of organization or in its operating agreement.

               (b) TASL  shall  deliver  to  Lender  written  notice  of (i) any
payments made by it to Borrower  pursuant to the Keep Well and (ii) any dividend
or distribution received by it from Borrower other than Equity Dividend Amounts,
in each case no later than three (3) business days after disbursing such payment
or the receipt of any such dividend or distribution, as applicable.

               (c) TASL  covenants  and agrees that it will at all times  during
the term of this Agreement maintain  management  personnel who are qualified and
competent to manage and direct the business and  operations  of Borrower and who
have experience in the commercial aviation industry.

               (d) TASL covenants and agrees that, at all times,  Triton Members
shall hold,  in the  aggregate,  at least fifty  percent  (50%) of the  Economic
Interests of Borrower. TASL covenants and agrees that, at all times, it shall be
the sole  manager of  Borrower  and shall have all  responsibilities  and duties
allocated  to TASL as manager  of  Borrower  pursuant  to  Borrower's  operating
agreement  or  articles of  organization  and shall not make any  delegation  or
assignment  to any  other  Person  of  such  responsibility  or duty  except  as
permitted thereby.

               7.  Pledgors'  Rights.  (a) As long as no  Default  or  Event  of
Default shall have occurred and be continuing  and until written notice shall be
given to each Pledgor in accordance with Section 8(a) hereof, such Pledgor shall
have the right, from time to time, to vote and give consents with respect to the
Pledged  Collateral or any part thereof for all purposes not  inconsistent  with
the provisions of this Agreement, the Note or any Ancillary Agreement; provided,
however,  that no vote shall be cast,  and no  consent  shall be given or action
taken,  which  would have the effect of  impairing  the  position or interest of



                                        8



<PAGE>



Lender in respect of the Pledged  Collateral or which would  authorize or effect
(i) the dissolution or liquidation,  in whole or in part, of Borrower,  (ii) the
consolidation  or merger of  Borrower  with any other  Person,  (iii)  except as
permitted under this Agreement or the Note, the sale, disposition or encumbrance
of all or substantially all of the assets of Borrower,  (iv) except as permitted
by Section 7(d) hereof and Section 4.4 of the Note, any change in the authorized
number of  Interests  or the stated  capital of Borrower and the issuance of any
additional  Interests,  (v) the  alteration of the voting rights with respect to
the Interests of Borrower,  or (vi) any change,  alteration or  modification  of
Borrower's articles of organization,  operating agreement (other than amendments
permitted  under the Note,  the Keep Well,  the Keep Well  Guaranty  or the Loan
Guaranty.

               (b) No Pledgor  shall be  entitled  to collect  and  receive  any
dividend or other  distribution paid in respect of the Pledged Interests whether
paid or payable in cash,  instruments or other property other than (1) beginning
as of April 1, 1997,  payable in the next calendar  month,  the Equity  Dividend
Amount  and any  accrued  and  unpaid  Equity  Dividend  Amount  for each  month
thereafter, (2) with respect to TASL only, amounts equal to equity contributions
made by TASL pursuant to the Keep Well which have not been  previously  recouped
through the payment of any dividend or  distribution by Borrower and (3) amounts
equal to any  reduction  of the Cash Amount  pursuant to Section 4(c) or Section
4(d)(ii) of the Purchase Agreement; provided, however, that during any period in
which any  payment  under the Note is overdue or a Default has  occurred  and is
continuing,  no Pledgor shall be entitled to collect and receive any dividend or
other  distribution  whatsoever  but Borrower may continue to accrue a liability
equal to the Equity  Dividend  Amount  during such period and  Borrower may make
payments in respect of any such accrued  liability so long as no amounts due and
payable under the Note are overdue and no Default thereunder is continuing,  and
provided,  further,  that any permitted dividends or distributions in respect of
the Pledged  Interests shall be paid only to the extent  permitted by applicable
law.

               (c)  Other  than  dividends  and  distributions  permitted  to be
received by a Pledgor  pursuant to subsection (b) above,  all dividends or other
distributions paid in respect of any of the Pledged Interests,  whenever paid or
made,  shall be delivered to Lender to hold as Pledged  Collateral and shall, if
received by such  Pledgor,  be  received in trust for the benefit of Lender,  be
segregated  from the other  property or funds of such Pledgor,  and be forthwith
delivered to Lender as Pledged  Collateral in the same form as so received (with
any necessary endorsement).



                                        9



<PAGE>



               (d) (i) Borrower shall be permitted to issue additional Interests
to any Person (each,  an  "Additional  Holder") and (ii) each member of Borrower
shall be permitted to sell or otherwise transfer Pledged Interests to any Person
(each, a "Transferee");  provided,  in each case that after giving effect to any
such  issuance  or transfer  (A) the number of members of  Borrower  who are not
Triton  Members  shall not exceed three (3) as a result of any such  issuance or
transfer,  (B) the Triton Members shall hold, in the aggregate,  at least 50% of
the Economic  Interests of Borrower,  (C) the Additional Holder or Transferee of
such equity interest shall be a Qualified Holder,  (D) such Additional Holder or
Transferee  shall  expressly  agree to the pledge of such  Interests  under this
Agreement  and to be bound by the terms and  conditions  hereof by delivery of a
duly executed Pledge Amendment, and (E) after notice to Lender by the applicable
Pledgor,  pursuant to the terms of Section 19 hereof,  Lender  shall  consent to
such  transfer  or  issuance,  such  consent  not to be  unreasonably  withheld;
provided,  however,  that if Lender does not  respond to such notice  within ten
(10) days after  receipt by Lender of such notice,  such consent shall be deemed
granted.  Notwithstanding  the foregoing,  no such issuance or transfer shall be
permitted if such issuance or transfer would violate any applicable law or cause
the Aircraft owned,  directly or indirectly,  by Borrower then registered  under
the Act to no longer be eligible for registration under the Act.

               8. Defaults and Remedies.  (a) Upon the occurrence of an Event of
Default and during the  continuation  of such Event of  Default,  then or at any
time  after  the  declaration  of such  Event of  Default  (provided  that  such
declaration  is not  rescinded by Lender) and following  written  notice to each
Pledgor,  Lender  (personally  or  through  an agent) is hereby  authorized  and
empowered to transfer and register in its name or in the name of its nominee the
whole or any part of the Pledged Collateral,  to exercise the voting rights with
respect  thereto,  to collect and receive all dividends and other  distributions
made  thereon,  to sell in one or more sales after seven (7) days' notice of the
time and place of any public sale or of the time after  which a private  sale is
to take place (which notice each Pledgor agrees is commercially reasonable), but
without  any  previous  notice  or  advertisement,  the whole or any part of the
Pledged  Collateral and to otherwise act with respect to the Pledged  Collateral
as though Lender was the outright owner thereof, each Pledgor hereby irrevocably
constituting  and appointing  Lender as the proxy and  attorney-in-fact  of such
Pledgor,  with full power of substitution to do so;  provided,  however,  Lender
shall not have any duty to exercise  any such right or to preserve  the same and
shall not be liable  for any  failure to do so or for any delay in doing so. Any
sale shall be made at a public or private sale at Lender's place of business, or
at any public  building in the City and County of San  Francisco or elsewhere to
be named in the  notice of sale,  either  for cash or upon  credit or for future
delivery at such price as Lender may deem fair,  and Lender may be the purchaser
of the  whole or any part of the  Pledged  Collateral  so sold and hold the same



                                       10



<PAGE>



thereafter  in its own right free from any claim of such Pledgor or any right of
redemption.  Each sale shall be made to the highest bidder,  but Lender reserves
the right to reject any and all bids at such sale which, in its  discretion,  it
shall  deem  inadequate.  Demands of  performance,  except as  otherwise  herein
specifically  provided for, notices of sale,  advertisements and the presence of
property at sale are hereby waived and any sale hereunder may be conducted by an
auctioneer or any officer or agent of Lender.

               (b) If, at the original  time or times  appointed for the sale of
the whole or any part of the Pledged  Collateral,  the highest  bid, if there be
but  one  sale,  shall  be  inadequate  to  discharge  in full  all the  Secured
Obligations, or if the Pledged Collateral be offered for sale in lots, if at any
of such sales,  the  highest bid for the lot offered for sale would  indicate to
Lender, in its discretion,  the unlikelihood of the proceeds of the sales of the
whole of the Pledged  Collateral  being  sufficient to discharge all the Secured
Obligations,  Lender  may,  on  one or  more  occasions  and in its  discretion,
postpone  any of said  sales by public  announcement  at the time of sale or the
time of previous  postponement of sale, and no other notice of such postponement
or  postponements  of sale need be given,  any other notice being hereby waived;
provided,  however, that any sale or sales made after such postponement shall be
after seven (7) days' notice to Pledgors.

               (c) In the  event of any  sales  hereunder  Lender  shall,  after
deducting all costs or expenses of every kind (including  reasonable  attorneys'
fees and disbursements) for care,  safekeeping,  collection,  sale,  delivery or
otherwise,  apply the  residue of the  proceeds  of the sales to the  payment or
reduction,  either in whole or in part, of the Secured Obligations in accordance
with the agreements and instruments  governing and evidencing such  Obligations,
returning the surplus, if any, to Pledgors.

               (d) If, at any time when Lender  shall  determine to exercise its
right to sell the whole or any part of the Pledged  Collateral  hereunder,  such
Pledged  Collateral  or the part  thereof to be sold  shall not,  for any reason
whatsoever,  be  effectively  registered  under the  Securities  Act of 1933, as
amended (or any similar statute then in effect) (the "Act"),  Lender may, in its
discretion  (subject only to applicable  requirements of law), sell such Pledged
Collateral  or part  thereof  by  private  sale in such  manner  and under  such
circumstances  as Lender may deem  necessary  or  advisable,  but subject to the
other  requirements  of this Section 8, and shall not be required to effect such
registration  or  to  cause  the  same  to be  effected.  Without  limiting  the
generality of the foregoing, in any such event Lender in its discretion (x) may,
in accordance with applicable securities laws, proceed to make such private sale
notwithstanding  that a  registration  statement for the purpose of  registering
such Pledged  Collateral or part thereof could be or shall have been filed under



                                       11



<PAGE>



the Act, (y) may  approach and  negotiate  with a single  possible  purchaser to
effect  such  sale  and (z) may  restrict  such  sale to a  purchaser  who  will
represent and agree that such purchaser is purchasing  for its own account,  for
investment  and not  with a view  to the  distribution  or sale of such  Pledged
Collateral or part thereof.  In addition to a private sale as provided  above in
this  Section  8,  if  any  of  the  Pledged  Collateral  shall  not  be  freely
distributable  to the public without  registration  under the Act at the time of
any proposed  sale pursuant to this Section 8, then Lender shall not be required
to  effect  such  registration  or cause  the same to be  effected  but,  in its
discretion  (subject only to applicable  requirements  of law), may require that
any sale  hereunder  (including  a sale at  auction)  be  conducted  subject  to
restrictions  (i) as to the financial  sophistication  and ability of any Person
permitted to bid or purchase at any such sale, (ii) as to the content of legends
to be placed upon any certificates  representing the Pledged  Collateral sold in
such sale,  including  restrictions on future transfer thereof,  (iii) as to the
representations required to be made by each Person bidding or purchasing at such
sale relating to that Person's  access to financial  information  about Pledgors
and such Person's intentions as to the holding of the Pledged Collateral so sold
for  investment,  for its own account,  and not with a view to the  distribution
thereof,  and (iv) as to such other  matters as Lender may,  in its  discretion,
deem  necessary  or  appropriate  in order that such sale  (notwithstanding  any
failure so to register) may be effected in compliance  with the Bankruptcy  Code
and other laws affecting the  enforcement  of creditors'  rights and the Act and
all applicable state securities laws.

               (e) Each Pledgor recognizes that any such private sale may result
in prices and other terms less  favorable to the seller than if such sale were a
public  sale  and,  notwithstanding  such  circumstances,  agrees  that any such
private  sale  shall be deemed to have  been made in a  commercially  reasonable
manner.  Lender  shall  be  under  no  obligation  to delay a sale of any of the
Pledged  Collateral for the period of time necessary to permit the registrant to
register  such  securities  for public sale under the Act,  or under  applicable
state securities laws, even if any Pledgor would agree to do so.

               (f) Each Pledgor  agrees that following the occurrence and during
the  continuance of an Event of Default it will not at any time plead,  claim or
take the benefit of any appraisal,  valuation,  stay,  extension,  moratorium or
redemption  law now or  hereafter  in force in order  to  prevent  or delay  the
enforcement of this Agreement,  or the absolute sale of the whole or any part of
the Pledged  Collateral or the  possession  thereof by any purchaser at any sale
hereunder, and each Pledgor waives the benefit of all such laws to the extent it
lawfully  may do so. Each  Pledgor  agrees that it will not  interfere  with any
right,  power and  remedy of Lender  provided  for in this  Agreement  or now or
hereafter  existing  at law or in  equity or by  statute  or  otherwise,  or the



                                       12



<PAGE>



exercise  or  beginning  of the  exercise  by  Lender of any one or more of such
rights,  powers  or  remedies.  No  failure  or delay on the part of  Lender  to
exercise  any such right,  power or remedy and no notice or demand  which may be
given to or made upon any  Pledgor by Lender with  respect to any such  remedies
shall operate as a waiver thereof, or limit or impair Lender's right to take any
action or to exercise any power or remedy  hereunder,  without notice or demand,
or prejudice its rights as against any Pledgor in any respect.

               (g) Each  Pledgor  further  agrees  that a  breach  of any of the
covenants  contained in this Section 8 will cause irreparable  injury to Lender,
that  Lender has no  adequate  remedy at law in respect of such breach and, as a
consequence,  agrees that each and every  covenant  contained  in this Section 8
shall be specifically  enforceable against such Pledgor, and such Pledgor hereby
waives  and agrees not to assert  any  defenses  against an action for  specific
performance of such covenants except for a defense that the Secured  Obligations
are not then due and payable in accordance  with the agreements and  instruments
governing and evidencing such obligations.

               9. Application of Proceeds. Any  cash held by Lender  as  Pledged
Collateral  and all cash proceeds  received by Lender in respect of any sale of,
liquidation  of,  or  other  realization  upon  all or any  part of the  Pledged
Collateral  or  pursuant to Section  8(g)  hereof  shall be applied by Lender as
follows:

               (a) First, to the payment of the costs and expenses of such sale,
including reasonable  compensation to Lender and its agents and counsel, and all
expenses,  liabilities  and  advances  made or incurred by Lender in  connection
therewith;

               (b)    Next, to the payment of the Secured Obligations; and

               (c) Finally, after payment in full of all Secured Obligations, to
the payment to Pledgors, or their successors or assigns, or to whomsoever may be
lawfully  entitled to receive the same or as a court of  competent  jurisdiction
may direct, of any surplus then remaining from such proceeds.

               10. Waiver.  No delay on Lender's part in exercising any power of
sale, Lien,  option or other right hereunder,  and no notice or demand which may
be given to or made upon  Pledgors by Lender with  respect to any power of sale,
Lien,  option or other right hereunder,  shall  constitute a waiver thereof,  or
limit or impair  Lender's  right to take any action or to exercise  any power of
sale, Lien,  option, or any other right hereunder,  without notice or demand, or
prejudice Lender's rights as against Pledgors in any respect.



                                       13



<PAGE>



               11.  Assignment.  Lender  may  assign,  endorse or  transfer  any
instrument evidencing all or any part of the Secured Obligations as provided in,
and in accordance  with, the Note, the Keep Well, the Keep Well Guaranty and the
Loan  Guaranty,  as  applicable,  and the  holder  of such  instrument  shall be
entitled to the benefits of this Agreement.

               12. Termination. Immediately following the payment of all Secured
Obligations, Lender shall deliver to each Pledgor the Pledged Collateral pledged
by such Pledgor at the time subject to this  Agreement  and all  instruments  of
assignment executed in connection therewith,  free and clear of the Liens hereof
and, except as otherwise provided herein, all of Pledgors' obligations hereunder
shall at such time terminate.

               13.  Lien  Absolute.  All  rights  of Lender  hereunder,  and all
obligations  of  Pledgors   hereunder,   shall  be  absolute  and  unconditional
irrespective of:

               (a) any lack of  validity  or  enforceability  of the  Note,  the
Purchase Agreement,  the Keep Well, the Keep Well Guaranty, the Loan Guaranty or
any  other   agreement  or  instrument   governing  or  evidencing  any  Secured
Obligations;

               (b) any change in the time,  manner or place of payment of, or in
any other  term of,  all or any part of the  Secured  Obligations,  or any other
amendment or waiver of or any consent to any departure  from the Note,  the Keep
Well,  the Keep Well  Guaranty,  the Loan  Guaranty  or any other  agreement  or
instrument governing or evidencing any Secured Obligations;

               (c)  any  exchange,   release  or   nonperfection  of  any  other
collateral,  or any release or  amendment  or waiver of or consent to  departure
from any guaranty, for all or any of the Secured Obligations; or

               (d) any other  circumstance  which might  otherwise  constitute a
defense available to, or a discharge of, any Pledgor.

               14. Release.  Each Pledgor consents and agrees that Lender may at
any time, or from time to time, in its  discretion  (a) renew,  extend or change
(pursuant to any right to do so provided in the relevant  agreement) the time of
payment,  and/or the manner, place or terms of payment of all or any part of the
Secured Obligations and (b) exchange, release and/or surrender all or any of the
Pledged Collateral,  or any part thereof, by whomsoever deposited,  which is now
or may hereafter be held by Lender in connection  with all or any of the Secured
Obligations;  all in such manner and upon such terms as Lender may deem  proper,



                                       14



<PAGE>



and without  notice to or further  assent  from such  Pledgor,  it being  hereby
agreed  that  such  Pledgor  shall be and  remain  bound  upon  this  Agreement,
irrespective  of the  existence,  value  or  condition  of  any  of the  Pledged
Collateral,   and  notwithstanding  any  such  change,   exchange,   settlement,
compromise,  surrender,  release, renewal or extension, and notwithstanding also
that the Secured  Obligations may, at any time,  exceed the aggregate  principal
amount thereof set forth in the Note, the Keep Well, the Keep Well Guaranty, the
Loan Guaranty or any other  agreement  governing any Secured  Obligations.  Each
Pledgor  hereby  waives  notice  of  acceptance  of  this  Agreement,  and  also
presentment,  demand,  protest  and  notice  of  dishonor  of any and all of the
Secured Obligations,  and promptness in commencing suit against any party hereto
or liable  hereon,  and in giving any notice to or of making any claim or demand
hereunder  upon such  Pledgor.  No act or omission of any kind on Lender's  part
shall in any event affect or impair this Agreement.

               15. Indemnification. Each Pledgor jointly and severally agrees to
indemnify  and hold Lender  harmless  from and  against any taxes,  liabilities,
claims and damages, including reasonable attorney's fees and disbursements,  and
other  expenses  incurred  or arising by reason of the taking or the  failure to
take action by Lender,  in good faith,  in respect of any  transaction  effected
under  this  Agreement  or in  connection  with the Lien  provided  for  herein,
including, without limitation, any taxes payable in connection with the delivery
or  registration  of any of the  Pledged  Collateral  as provided  herein.  Each
Pledgor jointly and severally agrees to promptly reimburse Lender for all actual
reasonable  out-of-pocket  costs and expenses,  including,  without  limitation,
reasonable   counsel  fees,   incurred  by  Lender,   in  connection   with  the
administration  and  enforcement  of this  Agreement  and all  reasonable  fees,
expenses and disbursements,  including the reasonable fees of Lender's agents or
representatives,  incurred in connection with any lien searches and filings made
by Lender, any amendments hereto or waivers or modifications  hereof;  provided,
however,  that  Pledgors  shall not be  obligated  to pay any costs or  expenses
(including attorney's fees) incurred by Lender in connection with preparation of
this Agreement or any other Ancillary  Agreement or any ordinary  administrative
costs and expenses of Lender in the absence of a Default by Borrower  under this
Agreement, the Note or any other Ancillary Agreement or a Default by any Pledgor
under this Agreement or any other Ancillary  Agreement;  and provided,  further,
that  nothing  contained  herein  shall limit or be deemed to limit any right of
Borrower under Section 13 of the Purchase Agreement. The obligations of Pledgors
under this Section 15 shall survive the termination of this Agreement.

               16. Reinstatement.  This Agreement shall remain in full force and
effect and continue to be  effective  should any petition be filed by or against



                                       15



<PAGE>


any  Pledgor  for  liquidation  or  reorganization,  should any  Pledgor  become
insolvent  or make an  assignment  for the  benefit  of  creditors  or  should a
receiver  or  trustee  be  appointed  for  all or any  significant  part  of any
Pledgor's  assets,  and shall continue to be effective or be reinstated,  as the
case may be, if at any time payment and performance of the Secured  Obligations,
or any part thereof,  is,  pursuant to applicable  law,  rescinded or reduced in
amount,  or must otherwise be restored or returned by any obligee of the Secured
Obligations,  whether as a "voidable  preference,"  "fraudulent  conveyance," or
otherwise,  all as though such payment or performance  had not been made. In the
event that any payment, or any part thereof, is rescinded,  reduced, restored or
returned, the Secured Obligations shall be reinstated and deemed reduced only by
such amount paid and not so rescinded, reduced, restored or returned.

               17.    Miscellaneous.  (a)  Lender may execute any of its duties
hereunder by or through agents or employees and shall be entitled to advice of
counsel concerning all matters pertaining to its duties hereunder.

               (b) Neither Lender nor any of its officers, directors, employees,
agents or counsel shall be liable for any action lawfully taken or omitted to be
taken by it or them hereunder or in connection herewith, except for its or their
own gross negligence or willful misconduct.

               (c) This  Agreement  shall be  binding  upon  Pledgors  and their
successors  and assigns,  and shall inure to the benefit of, and be  enforceable
by,  Lender  and its  successors  and  assigns,  and shall be  governed  by, and
construed  and enforced in accordance  with,  the internal laws in effect in the
State of  California  without  giving effect to principles of conflicts of laws,
and none of the terms or  provisions of this  Agreement may be waived,  altered,
modified  or amended  except in writing  duly signed for and on behalf of Lender
and Pledgors.

               18.  Severability.  If for any reason any provision or provisions
hereof are  determined to be invalid and contrary to any existing or future law,
such  invalidity  shall not impair the operation of or affect those  portions of
this Agreement which are valid.

               19. Notices.  Except as otherwise provided herein, whenever it is
provided herein that any notice, demand, request, consent, approval, declaration
or  other  communication  shall or may be  given  to or  served  upon any of the
parties by any other party,  or whenever  any of the parties  desires to give or
serve upon any other a communication  with respect to this Agreement,  each such
notice, demand, request, consent,  approval,  declaration or other communication
shall be in  writing  and  either  shall be  delivered  in person  with  receipt



                                       16



<PAGE>



acknowledged or sent by registered or certified mail, return receipt  requested,
postage prepaid, or by telecopy and confirmed by telecopy  answerback  addressed
as follows:

               (a)    If to Lender, at

                      c/o Polaris Investment Management Corporation
                      201 Mission Street, 27th Floor
                      San Francisco, CA  94105
                      Attention:   President
                      Telecopy Number:  (415) 284-7460

                      With copies to

                      c/o Polaris Investment Management Corporation
                      201 Mission Street, 27th Floor
                      201 High Ridge Road, 1st Floor
                      Stamford, CT  06927-4900
                      Attention:  Portfolio Management
                      Telecopy Number:  (203) 357-4585


               (b)    If to any Pledgor, at

                      c/o Triton Aviation Services Limited
                      55 Green Street, Suite 500
                      San Francisco, CA  94111
                      Attention:  President
                      Telecopy Number:  (415) 398-9184


or at such  other  address  as may be  substituted  by  notice  given as  herein
provided.  The giving of any notice required  hereunder may be waived in writing
by the party  entitled to receive such notice.  Every notice,  demand,  request,
consent, approval,  declaration or other communication hereunder shall be deemed
to have been duly  given or  served on the date on which  personally  delivered,
with receipt  acknowledged,  telecopied and confirmed by telecopy  answerback or
three (3) business  days after the same shall have been  deposited in the United
States  mail.  Failure  or delay in  delivering  copies of any  notice,  demand,
request,  consent,  approval,  declaration or other communication to the persons



                                       17



<PAGE>



designated  above  to  receive  copies  shall  in no way  adversely  affect  the
effectiveness of such notice, demand, request, consent, approval, declaration or
other communication.

               20. Confidentiality. Lender agrees that it will keep confidential
all  information  regarding  Pledgors that it may receive in connection with the
transactions  contemplated  hereunder  and  agrees  that it will  only  use such
information in connection  with such  transactions  and will not disclose any of
such information other than (i) to its directors, officers, employees, advisors,
auditors,  agents or  representatives  who are or are expected to be involved in
the evaluation of such information in connection with such  transactions and who
are  advised  of the  confidential  nature  of such  information  (and for whose
compliance  Lender  shall  be  liable),  (ii)  to the  extent  such  information
presently is or  hereafter  becomes  available  to Lender on a  non-confidential
basis from a source other than a Pledgor,  (iii) to the extent such  information
has been independently  acquired or developed by Lender without violating any of
its obligations under the Purchase Agreement or any Ancillary Agreement, or (iv)
to the extent disclosure is required by law, regulation or judicial order.

               21.  Section  Titles.   The  Section  titles  contained  in  this
Agreement  are and shall be without  substantive  meaning or content of any kind
whatsoever and are not a part of the agreement between the parties hereto.

               22. Counterparts. This Agreement may be executed in any number of
counterparts,   which  shall,   collectively  and  separately,   constitute  one
agreement.



                                       18



<PAGE>



               IN WITNESS  WHEREOF,  the parties  hereto have caused this Pledge
and Security Agreement to be duly executed as of the date first written above.


                                TRITON AVIATION SERVICES III LLC
                                By:  Triton Aviation Services Limited, its
                                        Manager

                                By: /S/ JOHN E. FLYNN
                                    -----------------------------------------
                                    Title: JOHN E. FLYNN, PRESIDENT


                                TRITON AVIATION SERVICES LIMITED


                                By: /S/ JOHN E. FLYNN
                                    -----------------------------------------
                                    Title: JOHN E. FLYNN, PRESIDENT


                                TRITON AVIATION LIMITED


                                By: /S/ STEVEN C. WIGHT
                                    ------------------------------------------
                                    Title: STEVEN C. WIGHT, MANAGING DISRECTOR


Accepted and Acknowledged by:

POLARIS AIRCRAFT INCOME FUND III
By:  Polaris Investment Management
       Corporation, General Partner

By: /S/ MARC A. MEICHES
    ---------------------------------------
    Title: MARC A. MEICHES, VICE PRESIDENT



                                       19



<PAGE>



                                   SCHEDULE I

                Attached  to and  forming  a part of  that  certain  Pledge  and
Security  Agreement dated as of April 1, 1997 among Triton Aviation Services III
LLC, a  California  limited  liability  company  ("Borrower"),  Triton  Aviation
Services Limited,  a Bermuda  corporation  ("TASL"),  Triton Aviation Limited, a
Bermuda  corporation  (collectively,  "Pledgors" and each of them individually a
"Pledgor")  to  Polaris   Aircraft   Income  Fund  III,  a  California   limited
partnership.

Name and
Address of
Pledgor                                                             Interests
- -------                                                             ---------

Triton Aviation Services Limited                                       99%
55 Green Street, Suite 500
San Francisco, California  94111

Triton Aviation Limited                                                 1%
55 Green Street, Suite 500
San Francisco, California  94111



<PAGE>



                                   SCHEDULE II
                      to the Pledge and Security Agreement

                                PLEDGE AMENDMENT

                This Pledge Amendment,  dated ______, 19__ is delivered pursuant
to [Section 6(a)(iv)/Section 7(d)] of the Pledge and Security Agreement referred
to below.  The  undersigned  hereby  agrees  that this Pledge  Amendment  may be
attached to that certain Pledge and Security Agreement,  dated ________ __, 1997
among the undersigned and others,  as Pledgors,  to Polaris Aircraft Income Fund
[__], a California  limited  partnership,  that the Pledged  Interests listed on
this  Pledge  Amendment  shall be and  become a part of the  Pledged  Collateral
referred to in said Pledge and Security  Agreement  and shall secure all Secured
Obligations  referred  to in said  Pledge and  Security  Agreement  and that the
undersigned  shall be deemed to be a Pledgor  under  said  Pledge  and  Security
Agreement.

                                               [Name of Pledgor]

                                               By: ___________________________
                                                  Title:


Name and
Address of
Pledgor                                            Interests
- -------                                            ---------



<PAGE>



                                    EXHIBIT A


None.




                               KEEP WELL AGREEMENT


                  This KEEP WELL  AGREEMENT  is dated as of April 1,  1997,  and
made by TRITON AVIATION SERVICES LIMITED,  a Bermuda  corporation  ("TASL"),  in
favor of TRITON  AVIATION  SERVICES  III LLC,  a  California  limited  liability
company (the  "Borrower"),  and in favor of POLARIS  AIRCRAFT INCOME FUND III, a
California limited partnership (the "Lender") (the "Agreement").

                                R E C I T A L S:

                  WHEREAS,  the Lender has entered  into a Purchase,  Assignment
and  Assumption  Agreement  dated as of April 1,  1997 with the  Borrower  (said
Agreement,  as it may  hereafter be amended or otherwise  modified  from time to
time,  being  the  "Purchase  Agreement",  the  terms  defined  therein  and not
otherwise  defined  herein  being  used  herein  as  therein  defined)  and,  in
connection therewith, the Borrower has delivered to the Lender a promissory note
effective as of April 1, 1997 in the amount of $9,713,711 (the "Note"); and

                  WHEREAS,  TASL, as the owner of 99 percent of the  outstanding
member interests in the Borrower,  will derive  substantial  direct and indirect
economic  benefit from the transactions  contemplated by the Purchase  Agreement
and the delivery of the Note to the Lender; and

                  WHEREAS,  in connection with the execution and delivery of the
Purchase  Agreement and the Note,  the Lender is requiring  that TASL shall have
executed and delivered this Agreement;

                  NOW, THEREFORE,  in consideration of the premises and in order
to induce the Lender to enter into the Purchase Agreement and accept delivery of
the Note, TASL hereby agrees as follows:


SECTION 1.  Obligation  to Cause the Borrower to Perform.  (a) TASL shall pay to
the  Borrower  from  time to time,  in cash in  United  States  dollars  through
additional  contributions to the equity of the Borrower,  amounts  sufficient to
permit the Borrower  promptly to perform all of its obligations  under the Note,
the Security Agreement and the Purchase Agreement.









<PAGE>









                  (b) Notwithstanding anything to the contrary contained herein,
TASL shall not be required to make  unrecouped  payments under this Agreement to
the Borrower or the Lender in excess of an aggregate of $956,111  (the  "Maximum
Obligation") at any time outstanding;  provided,  however, that any dividends or
other  distributions made by the Borrower (other than dividends or distributions
made in respect of any Equity  Dividend  Amount,  as such term is defined in the
Note),  shall be deemed to be made in  recoupment  of any payments  made by TASL
hereunder and the aggregate  amount of TASL's  obligation  under  subsection (a)
above shall be restored by the amount of such  dividend or  distribution,  up to
the Maximum Obligation.

                  (c) If TASL  shall at any time and from  time to time  fail to
perform or comply with any of its obligations  contained in subsection (a) above
and if for any  reason  the Lender  shall  have  failed to receive  when due and
payable (whether at stated maturity, by acceleration,  or otherwise) the payment
of all or any part of the  principal  of or  interest  on the Note or any  other
amount payable by the Borrower thereunder or under the Security Agreement or the
Purchase Agreement, then in each such case:

                       (i) it shall be conclusively assumed without necessity of
         proof that such  failure  by TASL was the sole and direct  cause of the
         Lender  failing to receive such payment  when due  irrespective  of any
         other contributing or intervening cause whatsoever;

                       (ii) TASL agrees that it will be  unconditionally  liable
         to the Lender for liquidated  damages (for loss of a bargain and not as
         a penalty)  for the amount of such  payment not  received by the Lender
         when so due and payable as well as for all costs and expenses,  if any,
         incurred by the Lender in  enforcing  this  Agreement  (but only to the
         extent of and as a reduction of the Maximum Obligation);

                       (iii) TASL further  irrevocably waives to the full extent
         permitted by applicable law any right or defense TASL may have to cause
         the Lender to prove the cause or amount of such  damages or to mitigate
         the same; and

                       (iv) since TASL has agreed to  liquidated  damages in the
         amount specified above, the Lender shall not be entitled to any damages
         in excess of such amount with respect to such payment.

                  (d)  Notwithstanding  anything herein to the contrary,  during
any period in which the Lender shall have failed to receive when due and payable




                                        2




<PAGE>









(whether at stated maturity, by acceleration or otherwise) the payment of all or
any part of the principal of or interest on the Note or any other amount payable
by the  Borrower  thereunder  or under the  Security  Agreement  or the Purchase
Agreement, TASL shall make payment of all funds under this Agreement directly to
the Lender c/o Polaris Investment  Management  Corporation,  201 Mission Street,
27th Floor,  San Francisco,  CA 94105,  and the Lender shall apply such funds in
the same manner as though paid directly by the Borrower.  All payments which are
received by the Borrower contrary to the provisions of this subsection (d) shall
be received in trust for the benefit of the  Lender,  shall be  segregated  from
other funds and  property  held by the  Borrower,  and shall be paid over to the
Lender in the same form as so received (with any necessary indorsement).

                  SECTION 2. Other Permitted Payments. If and to the extent that
amounts paid to the Borrower  pursuant to Section 1(a) do not exceed the Maximum
Obligation,  TASL may make  payments to the  Borrower  from time to time for any
purpose in which the  Borrower  is  permitted  to  engage,  and in each case the
amount of such  payment  shall be credited  against  TASL's  obligation  to make
payments to the Borrower under Section 1(a) hereof up to the Maximum Obligation;
provided,  however, that if the Borrower sells, transfers,  conveys or otherwise
disposes  of an Asset (as such term is defined  in the Note) for an amount  (the
"Sale Price") that is less than 90% of the product of (x) the Allocable  Portion
Percentage  (as defined in the Note) for such Asset  multiplied  by (y) the then
outstanding  balance of the Note,  then any payment made by TASL to the Borrower
in the 60 day  period  preceding  or the  60 day  period  following  such  sale,
transfer,  conveyance or other  disposition  shall be included in determining if
the Maximum  Obligation has been reached only after  deducting (a) the Shortfall
Amount (as defined  below) and (b) any dividends or other  distributions  (other
than dividends or  distributions  in respect of any Equity Dividend Amount) made
by the  Borrower  during both such  periods.  For  purposes  of this  Section 2,
"Shortfall  Amount"  means the amount  that is the  difference  between  (i) the
product of the Allocable  Portion  Percentage for the Asset which has been sold,
transferred,   conveyed  or  otherwise   disposed  of  multiplied  by  the  then
outstanding balance of the Note and (ii) the Sale Price.

                  SECTION 3. Taxes,  Authorizations,  Etc. (a) TASL will pay any
stamp or other tax (including  any interest and  penalties)  with respect to the
performance by TASL of its  obligations  pursuant to this  Agreement;  provided,
however, in no event shall such taxes include any taxes imposed upon or measured
by the gross or net income of the  Borrower  or the  Lender.  If any such tax is
paid by the Lender in the good faith  belief that such tax is owing,  TASL will,
upon demand of the Lender, indemnify the Lender for such payment,  together with




                                        3




<PAGE>









any  interest,  penalties  and expenses in  connection  therewith  plus interest
thereon  at the lesser of 10% or the  maximum  rate under  applicable  law.  The
Lender shall thereafter cooperate in a commercially  reasonable manner with TASL
in seeking any refunds of such taxes,  interest,  penalties  and expenses  which
refunds and any interest thereon shall be paid by the Lender to TASL within five
(5) business days of receipt by the Lender, provided, that in no event shall the
Lender be  required  to expend  its own funds in  seeking  any such  refund  and
provided,  further,  that any expenses incurred in connection therewith shall be
paid by TASL.

                  (b) TASL will  obtain  any  authorization,  approval  or other
action by, and will give any notice to or make any filing with, any governmental
authority or regulatory body required in connection with the performance by TASL
of its obligations pursuant to this Agreement.

                  SECTION  4.  Obligation   Absolute.   TASL  will  perform  its
obligations under this Agreement  regardless of any law, regulation or order now
or hereafter  in effect in any  jurisdiction  affecting  any of the terms of the
Note,  the Security  Agreement or the Purchase  Agreement or any other  document
related  thereto  or  the  rights  of  the  Lender  with  respect  thereto.  The
obligations  of TASL under this  Agreement  shall be absolute and  unconditional
irrespective of:

                       (i) any lack of validity,  enforceability or value of the
         Purchase  Agreement,  the Note,  the  Security  Agreement  or any other
         agreement or instrument relating thereto or any collateral therefor;

                       (ii) any  change in any term of the Note  (including  any
         change in the time, manner or place of payment  thereof),  the Security
         Agreement or the Purchase  Agreement,  or any other amendment or waiver
         of or any consent to departure from the Note, the Security Agreement or
         the Purchase Agreement;

                       (iii) any  exchange,  release  or  non-perfection  of any
         collateral,  or any  release  or  amendment  or waiver of or consent to
         departure from any guaranty,  for the Note,  the Security  Agreement or
         the Purchase Agreement;

                       (iv) any  failure  to pay any taxes  which may be payable
         with respect to the  performance  of such  obligations  by TASL, or any
         failure to obtain any  authorization  or approval  from or other action
         by,  or to notify or file  with,  any  Government  Entity  required  in
         connection with the performance of such obligations by TASL; or



                                        4




<PAGE>









                       (v) any  impossibility or  impracticality of performance,
         illegality,  force majeure,  any act of any Government  Entity,  or any
         other  circumstance which might constitute a defense available to, or a
         discharge  of, TASL or a surety,  or any other  circumstance,  event or
         happening  whatsoever,  whether  foreseen  or  unforeseen  and  whether
         similar or dissimilar to anything referred to above in this Section 4.

This Agreement shall continue to be effective or be reinstated,  as the case may
be, if at any time any payment is rescinded or must otherwise be returned by the
Lender upon the  insolvency,  bankruptcy  or  reorganization  of the Borrower or
otherwise, all as though such payment had not been made. The obligations of TASL
under this  Agreement  shall not be subject to reduction,  termination  or other
impairment by reason of any set-off, recoupment,  counterclaim or defense or for
any other reason.

                  SECTION 5. Waiver.  TASL hereby waives promptness,  diligence,
notice  of  acceptance  and  any  other  notice  with  respect  to the  Purchase
Agreement,  the Note and this  Agreement  and any  requirement  that the  Lender
protect, secure, perfect or insure any security interest or lien or any property
subject  thereto or exhaust any right or take any action against the Borrower or
any other person or entity or any collateral.

                  SECTION  6.  Separate   Undertaking.   Without   limiting  the
generality  of  any  of  the  foregoing  provisions  of  this  Agreement,   TASL
irrevocably  waives,  to the full extent permitted by applicable law and for the
benefit of, and as a separate  undertaking with, the Lender,  any defense to the
performance of this Agreement which may be available to TASL as a consequence of
this  Agreement  being  rejected or otherwise not assumed by the Borrower or any
trustee or other similar  official for the Borrower or for any substantial  part
of the property of the Borrower,  or as a consequence  of this  Agreement  being
otherwise  terminated or modified,  in any proceeding  seeking to adjudicate the
Borrower  a  bankrupt  or   insolvent  or  seeking   liquidation,   winding  up,
reorganization,  arrangement,  protection, relief or composition of the Borrower
or the debts of the Borrower under any law relating to bankruptcy, insolvency or
reorganization  or relief or  protection  of debtors,  whether  such  rejection,
non-assumption, termination or modification be by reason of this Agreement being
held to be an executory contract or by reason of any other circumstance. If this
Agreement  shall be so rejected or otherwise  not assumed,  or so  terminated or
modified,  TASL agrees for the benefit of, and as a separate  undertaking  with,
the  Lender,  that it will be  unconditionally  liable  to pay to the  Lender an
amount equal to each payment  which would  otherwise be payable by TASL under or
in  connection  with this  Agreement if this  Agreement  were not so rejected or
otherwise not assumed or were  otherwise  not so  terminated  or modified,  such




                                        5




<PAGE>









amount to be payable to the Lender,  as and when such payment would otherwise be
payable  hereunder and such amount to be applied as such payment would otherwise
be applied under the Note.

                  SECTION  7.   Representations  and  Warranties.   TASL  hereby
represents and warrants to Borrower and Lender as follows:

                  (a) TASL (i) is a corporation duly organized, validly existing
         and in good  standing  under  the  laws of  Bermuda  and  (ii)  has the
         requisite  power and  authority  to carry on its  business as presently
         conducted  and as  proposed  to be  conducted  after  the  date of this
         Agreement  and to enter into and  perform  its  obligations  under this
         Agreement.

                  (b)  TASL is the  beneficial  and  record  owner of 99% of all
         outstanding  member  interests  of the  Borrower  free and clear of any
         lien,  security interest or other charge or encumbrance other than that
         set forth in the Security Agreement.

                  (c) The execution and delivery by TASL of this Agreement,  and
         the performance by TASL of its obligations hereunder (i) have been duly
         authorized  by all  necessary  action on the part of TASL,  (ii) do not
         contravene  any  provision  of  law,  governmental  rule,   regulation,
         judgment  or  order   applicable   to  or  binding  on  TASL,   or  the
         organizational  documents  of TASL and (iii) do not require the consent
         or approval of, the giving of notice to, the registration  with, or the
         taking of any other action in respect of, any federal, state or foreign
         governmental  authority  or agency or any other  Person,  except  those
         already obtained.

                  (d) This Agreement has been duly executed and delivered and is
         enforceable  against TASL in accordance with its terms,  subject to the
         effect  of  bankruptcy,   insolvency,   reorganization,   receivership,
         moratorium  and other similar laws affecting the rights and remedies of
         creditors  generally  and, with respect to the  enforceability  of this
         Agreement,  by general  principles of equity,  including  principles of
         commercial  reasonableness,  good faith and fair dealing (regardless of
         whether enforcement is sought in a proceeding at law or in equity).

                  SECTION 8. No Transfer of Interest.  TASL covenants and agrees
that,  so long as the Note  shall  remain  unpaid,  TASL will not sell,  assign,
pledge,  encumber or  otherwise  dispose of any member  interest of the Borrower
except to the extent and in the manner  permitted by the Security  Agreement and
that any  transfer  by it of any  interest  in the  Borrower  shall not  reduce,
release or lessen its obligations under this Agreement.



                                        6




<PAGE>









                  SECTION 9.  Amendments,  Etc.  No  amendment  or waiver of any
provision of this Agreement nor consent to any departure by TASL therefrom shall
in any event be effective  unless the same shall be in writing and signed by the
Borrower and the Lender, and then such waiver or consent shall be effective only
in the specific instance and for the specific purpose for which given.

                  SECTION  10.  Expenses.  TASL  will  upon  demand  pay  to the
Borrower  and the  Lender,  respectively,  the amount of any and all  reasonable
expenses,  including  attorneys'  fees and expenses,  which the Borrower and the
Lender,  as the case  may be,  may  incur in  connection  with the  exercise  or
enforcement of any of their respective rights or interests hereunder;  provided,
however,  that  TASL  shall  not be  obligated  to pay  any  costs  or  expenses
(including attorney's fees) incurred by the Borrower or the Lender in connection
with the preparation of this Agreement or (x) any ordinary  administrative costs
and  expenses of the  Borrower so long as there is no default by TASL under this
Agreement or (y) any ordinary administrative costs and expenses of the Lender so
long as there is no default by TASL  under  this  Agreement  or a default by the
Borrower  under  the  Purchase  Agreement,  the  Note  or  any  other  Ancillary
Agreement.

                  SECTION 11.  Addresses  for  Notices.  All  notices,  demands,
declarations  and other  communications  required by this Agreement  shall be in
writing and shall be effective (i) if given by facsimile, when transmitted, (ii)
if given by  registered  or  certified  mail,  three  business  days after being
deposited  with the U.S.  Postal  Service,  (iii)  if  given  by  courier,  when
received, or (iv) if personally delivered, when so delivered, addressed:




                                        7




<PAGE>









                  If to TASL, to:

                         Triton Aviation Services Limited
                         55 Green Street, Suite 500
                         San Francisco, CA  94111
                         Attention:  President
                         Facsimile:  (415) 398-9184

or to such other  address as TASL may from time to time  designate in writing to
the Borrower and Lender.

                  If to the Borrower, to:

                         Triton Aviation Services III LLC
                         55 Green Street, Suite 500
                         San Francisco, CA  94111
                         Attention:  President
                         Facsimile:  (415) 398-9184

or to such other  address as the  Borrower  may from time to time  designate  in
writing to TASL and Lender.

                  If to Lender, to:

                         Polaris Aircraft Income Fund III
                         c/o Polaris Investment Management Corporation
                         201 Mission Street, 27th Floor
                         San Francisco, CA  94105
                         Attention:  President
                         Facsimile:  (415) 284-7460

                  With a copy to:

                         Polaris Aircraft Income Fund III
                         c/o Polaris Investment Management Corporation
                         201 High Ridge Road, 1st Floor
                         Stamford, CT  06927-4900
                         Attention:  Portfolio Management
                         Facsimile:  (203) 357-4585


                                        8




<PAGE>












or to such other address as Lender shall from time to time  designate in writing
to the Borrower and TASL.

                  SECTION 12. No Waiver; Remedies. No failure on the part of the
Borrower  or the  Lender  to  exercise,  and no delay in  exercising,  any right
hereunder  shall  operate as a waiver  thereof;  nor shall any single or partial
exercise of any right hereunder  preclude any other or further  exercise thereof
or the exercise of any other right.  The remedies herein provided are cumulative
and not exclusive of any remedies provided by law.

                  SECTION  13.  Continuing  Agreement;  Transfer  of Note.  This
Agreement  is a  continuing  agreement  and shall (i)  remain in full  force and
effect until  payment in full and  discharge  of the Note,  (ii) be binding upon
TASL,  its  successors  and  assigns,  and (iii)  inure to the benefit of and be
enforceable  by the  Borrower,  the  Lender  and  their  respective  successors,
transferees and assigns. Without limiting the generality of the foregoing clause
(iii),  the Lender may assign or  otherwise  transfer the Note held by it to any
other person or entity,  and such other person or entity shall thereupon  become
vested with all the rights in respect  thereof  granted to the Lender  herein or
otherwise.

                  SECTION 14.  Governing Law. This  Agreement  shall be governed
by, and construed in accordance with, the laws of the State of California.




                                        9




<PAGE>









                  IN WITNESS WHEREOF,  TASL has caused this Agreement to be duly
executed and delivered by its officer  thereunto duly  authorized as of the date
first above written.

                                               TRITON AVIATION SERVICES
                                               LIMITED



                                               By: /S/JOHN E. FLYNN
                                                   ---------------------
                                                   Name: JOHN E. FLYNN
                                                   Title: PRESIDENT

The  foregoing  Agreement
is hereby  accepted and 
agreed to as of the date 
first above written:


TRITON AVIATION SERVICES III LLC

By:   Triton Aviation Services
      Limited, Manager


      By:/S/JOHN E. FLYNN
         ---------------------
         Name: JOHN E. FLYNN
         Title: PRESIDENT

POLARIS AIRCRAFT INCOME FUND III

By:   Polaris Investment Management
      Corporation, General Partner


      By:/S/MARC A. MEICHES
         ----------------------
         Name: MARC A. MEICHES
         Title: VICE PRESIDENT




                                       10


                                 PROMISSORY NOTE


$9,713,711                                                       Effective as of
                                                                 April 1, 1997

                  FOR VALUE RECEIVED, the undersigned,  TRITON AVIATION SERVICES
III LLC, a California  limited  liability company having its principal office at
55 Green Street, San Francisco,  California 94111 ("Borrower"),  hereby promises
to pay to the order of POLARIS  AIRCRAFT  INCOME FUND III, a California  limited
partnership  ("Lender"),  having an office c/o General Electric Capital Aviation
Services,  Inc. at 201 High Ridge Road, Stamford, CT 06925, the principal amount
of NINE MILLION SEVEN HUNDRED THIRTEEN  THOUSAND SEVEN HUNDRED ELEVEN AND 00/100
DOLLARS ($9,713,711)  (hereinafter  referred to as the principal amount hereof),
together with interest thereon  (computed on the basis of a 360 day year) on the
unpaid balance  thereof,  commencing  from the effective  date hereof.  Interest
shall accrue and be payable at a rate equal to the lesser of the maximum  lawful
rate under  applicable  law or twelve  percent  (12%) per annum  (the  "Interest
Rate").  All past due  installments of principal and, if permitted by applicable
law, of interest,  shall bear interest at a rate equal to the Interest Rate plus
two percent (2%) per annum (the "Default  Interest Rate").  During the existence
of any Event of Default (as such term is defined in Section 5 of this Promissory
Note), the entire unpaid balance of principal shall, at the option of the holder
hereof,  bear  interest at the Default  Interest  Rate.  Borrower  agrees to pay
Lender  quarterly,  as it accrues,  interest on the principal amount  hereunder.
Subject to Sections 1.2 and 1.4 hereof,  the principal  amount hereof,  together
with interest at the Interest  Rate,  shall be payable as provided in Schedule A
hereto in twenty-seven (27) quarterly payments of principal and interest payable
on each March 31, June 30, September 30 and December 31, beginning June 30, 1997
and one balloon payment of all remaining principal and accrued interest on March
31, 2004.  Each payment of principal and interest shall be made by wire transfer
to a bank account designated by the holder to Borrower in writing.

                  The further terms and conditions of this  Promissory  Note are
as follows:










<PAGE>








1.0      Seller Financing; Defined Terms.

                  1.1.  Borrower  and  Lender  have  entered  into that  certain
Purchase,  Assignment and Assumption Agreement (the "Purchase  Agreement") dated
as of April 1,  1997.  This  Promissory  Note is given  in  respect  of  certain
obligations  as more fully set forth in  Section 6 hereof,  in  connection  with
Borrower's acquisition of the Transferred Interests.

                  1.2.  The  principal  amount of this  Promissory  Note and the
principal repayments set forth on Schedule A shall be recalculated in accordance
with Section 1.4 hereof to give effect to any  reduction  to the Purchase  Price
pursuant to Section 4(c) or Section 4(d)(ii) of the Purchase Agreement.

                  1.3. This  Promissory  Note may be prepaid in whole or in part
at any time without penalty.

                  1.4.  Amounts  prepaid  pursuant to Sections 1.3 or 3.8 hereof
shall be  applied  on a pro rata  basis to  reduce  all  remaining  payments  of
principal and the interest  payable thereon shall be recalculated  based on such
reduced  outstanding  principal  amount  in  accordance  with a  mortgage  style
amortization  schedule  determined  with reference to the remaining term of this
Promissory Note plus four quarters with a balloon payment due at March 31, 2004.

                  1.5. Unless  otherwise  defined  herein,  terms defined in the
Purchase  Agreement are used herein as therein defined,  and the following shall
have (unless otherwise provided elsewhere in this Promissory Note) the following
respective meanings (such meanings being equally applicable to both the singular
and plural form of the terms defined):

                  "Economic Interest" means with respect to a member of Borrower
(i) if such  member's  capital  account is a  positive  amount,  the  percentage
obtained by dividing such member's capital account by the total positive capital
accounts of all members of Borrower,  (ii) if such member's  capital  account is
zero or less, a percentage  equal to zero,  or (iii) if the capital  accounts of
all  members  are  zero or less,  the  percentage  interest  of such  member  in
distributions  of  Borrower's  cash flow from  operations.  The capital  account
amounts  set forth in the most  recently  filed  Federal  income  tax  return of
Borrower  and the  cash  flow  percentages  set  forth in  Borrower's  operating
agreement shall be used for the foregoing determination.







                                        2

<PAGE>







                  "Equity  Dividend  Amount"  means,  (i) for any calendar month
that  ends  prior to the  first  Effective  Time to  occur  under  the  Purchase
Agreement,  an amount equal to $15,349, and (ii) for the calendar month in which
the first  Effective  Time  occurs  under the  Purchase  Agreement  and for each
calendar month thereafter, an amount equal to $25,581 and for any period that is
less than a calendar month, a proportionate  amount thereof calculated using the
same proportion that the number of days in such period bears to thirty days.

                  "Indebtedness"  of any Person means any (i)  indebtedness  for
borrowed  money or for the deferred  purchase price of property or services (but
not including  obligations to trade creditors incurred in the ordinary course of
business that are not yet due and payable), (ii) obligations evidenced by notes,
bonds, debentures or similar instruments,  (iii) indebtedness created or arising
under any conditional  sale or other title  retention  agreement with respect to
acquired  property,  (iv)  capitalized  lease  obligations  of such Person,  (v)
obligations  guaranteeing,  indemnifying,  assuming,  purchasing or repaying any
indebtedness,  lease,  dividend,  or other obligation of any other Person in any
manner,  (vi)  indebtedness  referred to in clause (i), (ii), (iii), (iv) or (v)
above secured by (or for which the holder of such  indebtedness  has an existing
right,  contingent or otherwise,  to be secured by) any Lien upon or in property
owned by such Person, or (vii) liabilities under Title IV of ERISA (as such term
is defined in Section 2.11).

                  "Letter of Credit" means an irrevocable  direct-pay  letter of
credit issued by a bank (i) whose long term debt  obligations  are rated "AA" or
better by Thompson's  Bankwatch or (ii) that is rated "AA" or better by Standard
& Poor's in the Financial  Institutions  Rating Service and that is payable upon
presentation  by the  beneficiary  of such Letter of Credit of a sight draft (it
being understood,  but without any impairment of the issuing bank's  obligations
under such Letter of Credit,  that the beneficiary  shall not present such sight
draft unless (x) there has been a default under the  promissory  note secured by
such Letter of Credit or (y) the Letter of Credit would expire within 45 days of
such  presentation  and an extension of such expiration date shall not have been
granted nor an acceptable replacement Letter of Credit been provided).

                  "Permitted  Investment" means (i) any Permitted SPV Investment
and (ii) (A) any evidence of Indebtedness, maturing not more than one year after
its acquisition by Borrower, issued or unconditionally  guaranteed by the United
States  Government,  (B) commercial paper,  maturing not more than twelve months
from the date of issue,  which is  issued by a Person  having a rating of A-1 or
P-1 or the  equivalent or higher from at least one of Standard & Poor's  Ratings
Services,  Moody's  Investors  Service,  Inc.,  Phoenix  Duff & Phelps  or Fitch








                                        3

<PAGE>







Investors  Services,  (C) any  certificate  of deposit  or  bankers  acceptance,
maturing  not more than one year after its  acquisition  by  Borrower,  which is
issued  by a  commercial  banking  institution  organized  under the laws of the
United States that has a combined  capital and surplus and undivided  profits of
not less than $250,000,000,  (D) any repurchase  agreement entered into with any
commercial  banking  institution  described in the foregoing clause (C) which is
secured by a security  interest in any  obligation of a type described in any of
the  foregoing  clauses (A)  through  (C),  or (E) any money  market  account or
similar  investment  account  that  invests  solely  in  securities  of the type
described in clause (A), (B) or (C) of this definition.

                  "Permitted  SPV   Indebtedness"   means  any  indebtedness  of
Borrower:  (i) owed to any Triton LLC, (ii) for monies  borrowed  solely for the
purpose of (x) funding any maintenance,  improvements, additions, refurbishments
or modifications to any Aircraft owned,  directly or indirectly,  by Borrower or
(y) making  payments due and owing to Lender under this Promissory  Note,  (iii)
evidenced by a note payable to such Triton LLC on demand,  bearing interest at a
rate equal to the higher of 12% per annum or Bank of  America's  prime rate plus
2%, but not  exceeding  the maximum  lawful rate under  applicable  law and (iv)
guaranteed  by TIL and  secured by a Letter of Credit in an amount  equal to the
outstanding  balance of such promissory  note plus six months  interest  thereon
(calculated at 10% per annum), all as provided in the Loan Guaranty.

                  "Permitted  SPV  Investment"  means a demand loan made: (i) to
any Triton LLC,  (ii)  solely for the  purpose of (a)  funding any  maintenance,
improvements,  additions, refurbishments or modifications to any Aircraft owned,
directly or indirectly,  by such Triton LLC or (b) making payments due and owing
to a Polaris  Entity by such Triton LLC under a promissory  note entered into in
connection with an SPV Purchase Agreement,  (iii) evidenced by a promissory note
made by such Triton LLC payable to Borrower on Borrower's  demand,  (iv) bearing
interest  at a rate  equal to the  higher of 10% per annum or Bank of  America's
prime rate plus 2%, but not exceeding the maximum  lawful rate under  applicable
law and (v)  guaranteed by TIL and secured by a Letter of Credit issued in favor
of Borrower in an amount  equal to the  outstanding  balance of such  promissory
note plus six months interest thereon (calculated at 10% per annum).

                  "Polaris Entity" means any of Polaris Aircraft Income Fund II,
Polaris  Aircraft  Income Fund III,  Polaris  Aircraft  Income Fund IV,  Polaris
Aircraft  Income Fund V or Polaris  Aircraft  Income Fund VI, each a  California
limited partnership.

                  "Qualified   Holder"  means  (i)  any  Person  who  is  Triton
Management,  (ii) any Triton Member or (iii) any Person with a consolidated  net
worth,  net of  minority  interests  and,  if such  Person is a natural  person,








                                        4

<PAGE>







exclusive  of his  principal  residence,  of an amount that is not less than the
greater of (x)  $3,000,000  or (y) the  product of the  aggregate  consideration
(including cash, notes or other deferred  compensation)  paid by such Person for
all ownership interests owned by such Person in Borrower multiplied by two.

                  "SPV  Purchase   Agreements"  means  those  certain  Purchase,
Assignment and Assumption  Agreements,  each by and between a Polaris Entity, as
assignor,  and a Triton LLC, as assignee,  entered into  simultaneously with the
Purchase Agreement.

                  "TAL" means Triton Aviation Limited, a Bermuda corporation.

                  "TASL"  means  Triton  Aviation  Services  Limited,  a Bermuda
corporation.

                  "TIL" means Triton Investment Limited, a Bermuda corporation.

                  "Triton   Container"  means  Triton  Container   International
Limited, a Bermuda corporation.

                  "Triton  LLC" means any of Triton  Aviation  Services  II LLC,
Triton  Aviation  Services III LLC,  Triton  Aviation  Services IV LLC or Triton
Aviation Services V LLC, each a California limited liability company.

                  "Triton  Management"  means  any  director,  officer  or other
member of senior management of TASL, or TIL or any Triton Member.

                  "Triton  Member" means (i) TAL, TASL and Triton  Container and
(ii) any other  Person 90% or more of the  ownership  interest in which is held,
directly or indirectly,  by TIL and which Person has a  consolidated  net worth,
net of minority  interests,  that is not less than the greater of (x) $3,000,000
or (y) the product of the  aggregate  consideration  (including  cash,  notes or
other  deferred  compensation)  paid by such Person for all ownership  interests
owned by such Person in Borrower multiplied by two.

         2.0  Representations  and  Warranties.  To induce Lender to accept this
Note and  extend  seller  financing  to  Borrower,  Borrower  hereby  makes  the
following representations and warranties:

                  2.1.  Borrower is a limited  liability company duly organized,
validly  existing and in good standing under the laws of the State of California
and is  duly  qualified  as a  foreign  limited  liability  company  and in good







                                        5

<PAGE>







standing  under the laws of each  jurisdiction  where its  ownership or lease of
property or the conduct of its business requires such qualification  (except for
jurisdictions  in which failure to so qualify or be in good  standing  would not
have a material adverse effect on the business, assets,  operations,  prospects,
or financial or other condition of Borrower (a "Material Adverse Effect")).

                  2.2. The  execution,  delivery and  performance by Borrower of
this Promissory Note are within  Borrower's  power, have been duly authorized by
all  necessary  or  proper  limited  liability   company  action,   are  not  in
contravention of any provision of Borrower's articles of organization, operating
agreement,  or any other such  governing  document,  will not violate any law or
regulation,  or any order or decree of any Government Entity,  will not conflict
with or result in the breach or  termination  of,  constitute a default under or
accelerate any performance required by, any indenture,  mortgage, deed of trust,
lease,  agreement,  or other instrument to which Borrower is a party or by which
Borrower or its property is bound, and do not require the consent or approval of
any Person except those already  obtained.  This Promissory Note constitutes the
legal,  valid and  binding  obligation  of  Borrower  enforceable  against it in
accordance  with its terms,  subject to the  effect of  bankruptcy,  insolvency,
reorganization,  receivership,  moratorium  and other similar laws affecting the
rights  and  remedies  of  creditors   generally   and,   with  respect  to  the
enforceability  of this  Promissory  Note,  by  general  principles  of  equity,
including principles of commercial  reasonableness,  good faith and fair dealing
(regardless  of  whether  enforcement  is  sought in a  proceeding  at law or in
equity).

                  2.3.  The pro forma  balance  sheet of  Borrower  as of May 1,
1997, a copy of which has been  furnished to Lender,  was prepared in accordance
with  generally  accepted  accounting   principles  ("GAAP")  and  reflects  the
assignment of all Transferred  Interests and the seller  financing  transactions
contemplated  hereunder and under the Purchase Agreement as if they had occurred
as at the date of such balance  sheet and  presents  fairly on a pro forma basis
the financial position of Borrower at such date assuming the events specified in
this paragraph had actually occurred on such date.  Borrower,  as of the date of
this Promissory Note, had no obligations,  contingent liabilities or liabilities
for taxes or other  charges,  long-term  leases or unusual  forward or long-term
commitments  which were not  reflected in the  aforementioned  pro forma balance
sheet of Borrower.

                  2.4. No dividends or other  distributions  have been declared,
paid or made upon any  membership  interest  (or any other  equity  interest) of
Borrower nor have any  membership  interests  (or any other equity  interest) of
Borrower been redeemed,  retired,  purchased or otherwise  acquired for value by
Borrower.








                                        6

<PAGE>







                  2.5. Borrower owns full, complete and good title to all of its
properties  and assets and none of its  properties  and assets is subject to any
mortgage  or  deed  of  trust,  pledge,   hypothecation,   assignment,   deposit
arrangement, lien, charge, claim, security interest, easement or encumbrance, or
other security agreement of any kind or nature whatsoever (collectively, "Liens"
and  individually,  a "Lien"),  except  Permitted  Encumbrances  (as  defined in
Section 4.3 hereof).

                  2.6.  Borrower has insurance on all its  properties or assets,
including,  without  limitation,  policies of fire, theft and other casualty and
liability  insurance on terms and  conditions  and in amounts that are customary
for  owners of  commercial  aircraft.  All such  policies  are in full force and
effect and there are no defaults by any party under any provision thereof.

                  2.7.  Borrower  is not in  default,  nor is any third party in
default,  under  or with  respect  to any  contract,  agreement,  lease or other
instrument to which Borrower is a party.

                  2.8. Borrower is not an "investment company" or an "affiliated
person"  of, or  "promoter"  or  "principal  underwriter"  for,  an  "investment
company," as such terms are defined in the  Investment  Company Act of 1940,  as
amended.  The  obligations  evidenced by this  Promissory  Note,  the  repayment
thereof and the consummation of the transactions contemplated by this Promissory
Note will not violate any provision of such Act or any rule, regulation or order
issued by the Securities and Exchange Commission thereunder.

                  2.9. The seller  financing  evidenced by this  Promissory Note
will be used only for the purposes contemplated hereunder and under the Purchase
Agreement.

                  2.10.  All  federal,  state,  local and foreign  tax  returns,
reports and statements required to be filed by Borrower have been filed with the
appropriate  governmental  agencies and all taxes, charges and other impositions
shown  thereon to be due and  payable  have been paid prior to the date on which
any fine,  penalty,  interest or late charge may be added thereto for nonpayment
thereof,  or any such  fine,  penalty,  interest  or late  charge has been paid.
Borrower has paid when due and payable all taxes and other  charges  required to
be paid by it except those  contested in good faith by appropriate  proceedings,
with  adequate  reserves made in respect  thereof in accordance  with and to the
extent required by GAAP.








                                        7

<PAGE>







                  2.11.  Borrower  does not maintain or contribute to and is not
obligated to contribute to, and has not maintained or contributed to and was not
obligated to contribute to, any employee benefit plan as defined in Section 3(3)
of the Employee Retirement Income Security Act of 1974, as amended ("ERISA").

                  2.12.  No  action,  claim  or  proceeding  is now  pending  or
threatened against Borrower,  at law, in equity or otherwise,  before any court,
board,  commission,  agency or instrumentality  of any federal,  state, or local
government or of any agency or subdivision  thereof, or before any arbitrator or
panel of arbitrators nor does a state of facts exist which is reasonably  likely
to give rise to such proceedings.

                  2.13. All  representations  and warranties made by Borrower in
the Purchase  Agreement are true and correct in all material  respects on and as
of the date hereof as though made on and as of this date.

         3.0 Affirmative  Covenants.  Borrower covenants and agrees that, unless
Lender shall  otherwise  consent in writing,  from and after the date hereof and
until this Promissory Note is paid in full:

                  3.1.  Borrower  shall  (i) do or cause  to be done all  things
necessary  to  preserve  and keep in full force and effect  its  existence  as a
California  limited liability  company and its rights;  (ii) continue to conduct
its  business  in  accordance  with its  operating  agreement  and  articles  of
organization as permitted hereunder; and (iii) at all times use its best efforts
to maintain,  preserve and protect,  or cause to be  maintained,  preserved  and
protected,  all of its property, in use or useful in the conduct of its business
and keep the same in good  repair,  working  order and  condition  (taking  into
consideration ordinary wear and tear).

                  3.2.  Borrower shall (i) pay and discharge or cause to be paid
and discharged all its Indebtedness,  including, without limitation, all amounts
outstanding  hereunder  as and  when due and  payable,  and  (ii)  except  where
contested,  in good faith, by proper legal actions or proceedings  with adequate
cash reserves  therefor,  pay and  discharge or cause to be paid and  discharged
promptly all (A) taxes or other charges imposed upon it, its income and profits,
or any of its real or personal property, whether tangible or intangible, and (B)
lawful claims for labor,  materials,  supplies and services or otherwise  before
any thereof shall become in default.

                  3.3.  Borrower shall deliver to Lender(i) within 60 days after
the end of each of the first three fiscal  quarters of  Borrower,  a copy of the









                                        8

<PAGE>







unaudited  balance sheet of Borrower as of the end of such fiscal quarter and an
unaudited statement of income and cash flow of Borrower for such fiscal quarter,
all prepared in accordance  with GAAP  (subject to normal year end  adjustment),
accompanied by a certification of the chief executive officer or chief financial
officer of the  manager  of  Borrower  that all such  financial  statements  are
complete and correct and present fairly, all in accordance with GAAP (subject to
normal year end adjustments),  the financial position, the results of operations
and cash flow  statements  of Borrower as at the end of such quarter and for the
period then ended and that no Event of Default or event which with the giving of
notice or lapse of time or both would  become an Event of Default (a  "Default")
is in  existence  as of such  time,  (ii)  within 120 days after the end of each
fiscal year of Borrower,  a copy of the audited  balance sheet of Borrower as of
the end of such fiscal year and an audited  statement of income and cash flow of
Borrower for such fiscal year, all prepared in accordance with GAAP, accompanied
by (x) a certification of the chief executive officer or chief financial officer
of Borrower  that all such  financial  statements  are  complete and correct and
present fairly, all in accordance with GAAP, the financial position, the results
of operations and the changes in financial position of Borrower as at the end of
such year and for the period  then ended and that no Default or Event of Default
is in existence as of such time and (y) an auditor's  report  unqualified  as to
the scope of the audit and as to the Borrower being a going  concern,  from KPMG
Peat Marwick LLP, or any other firm of independent  certified public accountants
of recognized  national  standing selected by Borrower and acceptable to Lender,
(iii)  copies of any  documents  relating to or  evidencing  any  Permitted  SPV
Indebtedness  incurred by or any Permitted SPV Investment  made by Borrower,  no
later than  three (3)  business  days after  Borrower  incurring  or making,  as
applicable,  any Permitted SPV  Indebtedness or Permitted SPV  Investment,  (iv)
notice that the Borrower has  incurred  any other  Indebtedness  or acquired any
Permitted  Investments  (other than Permitted SPV  Investments) no later than 30
days after Borrower incurring or making, as applicable, any such Indebtedness or
Permitted Investment together with such other information about any Indebtedness
or Permitted  Investment as Lender may reasonably request, (v) written notice of
any Keep Well proceeds  received by Borrower and of any dividend or distribution
declared or made by Borrower, in each case no later than three (3) business days
after  receipt  of such  proceeds  or the  declaration  or  payment  of any such
dividend  or  distribution,  as  applicable  and  (vi)  written  notice  of  any
transaction  by Borrower  with an Affiliate  setting  forth the identity of each
Affiliate  that is a party  to such  transaction,  the  material  terms  of such
transaction and any amounts  required to be paid by, on behalf of or to Borrower
in respect of such transaction.

                  3.4.  Borrower shall deliver to Lender as soon as practicable,
but in any event within two (2) business  days after  Borrower  becomes aware of
the existence of any Default or Event of Default,  or any  development  or other








                                        9

<PAGE>







information which would have a Material Adverse Effect,  telephonic or facsimile
notice specifying the nature of such Default, Event of Default or development or
information,   including  the  anticipated  effect  thereof,  which  notice,  if
telephonic,  shall be promptly  confirmed in writing to Lender  within three (3)
business days.

                  3.5.  Borrower shall deliver to Lender such other  information
respecting Borrower's business,  financial condition or prospects as Lender may,
from time to time,  reasonably request including,  without  limitation,  monthly
reports  of the  outstanding  balances  of  accounts  receivable  since the last
monthly  report;  a detailed  aged trial balance of all  then-existing  accounts
receivable by Lessee and specifying the names of account  debtors and such other
information  relating  to the  accounts  receivable  as  Lender  may  reasonably
require;  and a certificate  of the gross revenues of Borrower for the preceding
month.  Lender and any of its officers,  employees  and/or agents shall have the
right,   exercisable  as  frequently  as  Lender  reasonably  determines  to  be
appropriate,  during  normal  business  hours  (or at such  other  times  as may
reasonably be requested by Lender),  to inspect the properties and facilities of
Borrower and to inspect, audit and make extracts from all of Borrower's records,
files and books of account.  Borrower  shall  deliver any document or instrument
reasonably  necessary  for  Lender to obtain  records  from any  service  bureau
maintaining records for Borrower.

                  3.6.  (a)  Borrower  shall,  either  directly  or  indirectly,
procure and maintain insurance policies with reputable insurers, covering all of
its properties or assets, including, without limitation, policies of fire, theft
and other  casualty  and  liability  insurance on terms and  conditions  and for
amounts that are customary for owners of commercial  aircraft.  Without limiting
the foregoing, Borrower shall, directly or indirectly,  procure and maintain, at
all times,  (i) all risk hull  insurance  (including  the War and Allied  Perils
Endorsement  insurance) written by recognized aircraft insurers on each Aircraft
owned, directly or indirectly,  by Borrower in an amount equal, at all times, to
the Appraised Value of such Aircraft and (ii) comprehensive  liability insurance
written in an amount  not less than  $500,000,000.  Lender  shall be named as an
additional  insured  on all such  insurance  policies  and  named as  additional
insured on all liability policies.

                  (b) All such policies of insurance  shall provide (i) by means
of endorsements or otherwise,  in form and manner  satisfactory to Lender,  that
such  insurance  shall not be  invalidated by any action or inaction of Borrower
and shall insure Lender,  regardless of any breach or violation of any warranty,
declaration or condition  contained in such policies by Borrower;  (ii) by means
of endorsements or otherwise in form and manner  satisfactory to Lender, that if
such insurance is cancelled for any reason whatever,  or any substantial  change








                                                   10

<PAGE>







is made in the  coverage  which  affects  the  interests  of  Lender  or if such
insurance  is allowed to lapse for  nonpayment  of premium,  such  cancellation,
change or lapse shall not be effective as to Lender for 30 days (or, in the case
of any war risks or allied perils coverage, seven (7) days, or such other period
as may  from  time to time be  customarily  obtainable  in the  industry)  after
receipt by Lender of written  notice from such  insurers  of such  cancellation,
change or lapse;  (iii) by means of endorsements or otherwise in form and manner
satisfactory to Lender, that such insurers shall waive any rights of subrogation
against Lender;  (iv) that they are primary  without right of contribution  from
any other insurance which is carried by Lender with respect to any Aircraft that
is owned,  directly or  indirectly,  by Borrower  (or any engines or other parts
thereof);  and (v) that all provisions thereof,  except the limits of liability,
shall  operate in the same  manner as if there were a separate  policy  with and
covering each insured.

                  (c) Borrower shall arrange for appropriate  certification,  to
the  reasonable  satisfaction  of Lender,  as to the scope and existence of such
insurance  and the  terms  thereof  to be  made to  Lender  on or  prior  to the
occurrence of the first Effective Time under the Purchase Agreement and annually
thereafter, until this Promissory Note is paid in full, and thereafter not later
than fourteen (14) days after the renewal date of each of the insurances by each
insurer (or by a firm of independent  insurance brokers of reorganized  standing
in the placement of similar coverage) in such form and dealing with such matters
relating to the  obligations  of  Borrower  hereunder  as Lender may  reasonably
require.

                  3.7.  Borrower shall comply with all Federal,  state and local
laws and regulations  applicable to it,  including,  without  limitation,  those
relating to environmental matters and perform, within all required time periods,
all of its  obligations  and enforce all of its rights  under each  agreement to
which it is a party.  Borrower  shall not  terminate  or  modify  in any  manner
materially  adverse to Borrower any  provision of any agreement to which it is a
party.

                  3.8. (a) Borrower  shall make a prepayment on this  Promissory
Note on the terms  hereinafter  set  forth in the event of any sale or  casualty
loss (each a  "Prepayment  Event")  relating  to any  Aircraft  or any  property
comprising all or any portion of any Transferred  Interest  acquired by Borrower
pursuant to the Purchase  Agreement  (an  "Asset")  (each such Asset that is the
subject of a Prepayment Event is hereinafter  referred to as a "Removed Asset");
provided,  however,  a  Prepayment  Event shall not be deemed to include (i) any
sale of an engine or a part if,  within 45 days (with  respect to engines) or 90
days (with respect to parts) after such sale, Borrower obtains a replacement for
such  engine or part that has the same or  greater  value as the  engine or part
that was the subject of such sale,  (ii) any sale of obsolete or surplus  parts,








                                       11

<PAGE>







at their fair market  value,  to the extent that the aggregate of all such sales
in a  calendar  year do not exceed  $200,000  or (iii) any  casualty  loss of an
engine or any part if  Borrower  causes  such  engine or part to be  repaired or
replaced,  within 45 days (with  respect to engines) or 90 days (with respect to
parts) after such casualty  loss,  and such repaired or replaced  engine or part
has the same or greater value as the engine or part that was the subject of such
casualty  loss. If a Prepayment  Event relates to a Removed Asset but relates to
less than the entire Removed Asset,  Borrower and Lender shall negotiate in good
faith to determine the appropriate percentage of such Removed Asset that was the
subject of such Prepayment  Event.  Such percentage  shall then be multiplied by
the appraised value of the entire Removed Asset (calculated immediately prior to
the Prepayment  Event),  and the amount therefrom shall be used to calculate the
Allocable Portion Percentage (as defined below) of the Removed Asset.

                  (b) The  amount of the  prepayment  required  as a result of a
Prepayment  Event  shall be an amount  equal to the  greater  of (1) 100% of the
Allocable  Portion  Percentage  for the  Removed  Asset  multiplied  by the then
outstanding  principal  balance  of this  Promissory  Note and (2) the  proceeds
actually  received  by  Borrower  in respect of the  Removed  Asset,  net of any
reasonable  out of pocket costs and expenses  incurred by Borrower in connection
with such  Prepayment  Event  (but not to exceed an amount  equal to 120% of the
Allocable Portion Percentage with respect to the Removed Asset multiplied by the
then  outstanding  principal  balance of this  Promissory  Note).  The Allocable
Portion Percentage shall mean, with respect to any Asset, the amount obtained by
dividing the appraised  value of the Asset  immediately  prior to the Prepayment
Event by the sum of the  appraised  values  of all  Assets  owned,  directly  or
indirectly,  by Borrower  immediately  prior to the Prepayment  Event.  For this
purpose,  appraised  value of an  Aircraft  owned,  directly or  indirectly,  by
Borrower  shall be the Appraised  Value.  The appraised  value of any receivable
that  constitutes a Removed Asset shall be the aggregate  outstanding  amount of
the principal and accrued interest and fees on such receivable as of the date of
the Prepayment Event.

                  (c) Any prepayment  required as a result of a Prepayment Event
shall be due and payable  hereunder  no later than three (3) days after the date
of the Prepayment Event;  provided,  that if such Prepayment Event is a casualty
loss that is insured, the portion of the prepayment required as a result of such
Prepayment  Event that is payable  pursuant to such insurance  coverage shall be
due and payable hereunder no later than the first to occur of (i) three (3) days
after receipt by Borrower of such  insurance  coverage or (ii) 15 days after the
date of the Prepayment Event. Amounts prepaid pursuant to this Section 3.8 shall
be applied as provided in Section 1.4 hereof.








                                       12

<PAGE>







         4.0  Negative Covenants.  Borrower  covenants and agrees that,  without
Lender's  prior written  consent,  from and after the date hereof and until this
Promissory Note is paid in full:

                  4.1. Borrower shall not, directly or indirectly,  by operation
of law or otherwise,  merge with, consolidate with, acquire all or substantially
all of the assets or capital  stock or other equity  interests  in, or otherwise
combine with, any Person (excluding the acquisition of the Transferred Interests
pursuant to the Purchase Agreement), nor form any subsidiary.

                  4.2.  (a)  Except as  otherwise  expressly  permitted  by this
Promissory Note, Borrower shall not create, incur, assume or permit to exist any
Indebtedness  except (i)  Indebtedness  evidenced by this Promissory  Note, (ii)
Permitted SPV Indebtedness,  (iii)  Indebtedness to trade creditors  incurred in
the ordinary  course of business that is due and payable but is being  contested
in good faith,  by proper  legal  actions or  proceedings,  if Borrower has cash
reserves on hand adequate to pay such Indebtedness, (iv) deferred taxes that are
either not yet due and  payable or are being  contested  in good faith by proper
legal actions or proceedings,  if Borrower has cash reserves on hand adequate to
pay such deferred taxes, and (v) Indebtedness, not to exceed $22,000,000, in the
aggregate,  during the term of this  Promissory  Note that is incurred  and used
solely to hushkit an Aircraft that is owned, directly or indirectly, by Borrower
(or to refinance  any  Indebtedness  incurred  solely to hushkit such  Aircraft;
provided,  however, that (x) the amount of such Indebtedness does not exceed the
then outstanding  principal  amount of the Indebtedness  being so refinanced and
(y) the term of such  Indebtedness does not materially extend beyond the term of
the  Indebtedness  being so  refinanced).  Indebtedness  incurred by Borrower to
hushkit an  Aircraft  that is owned,  directly  or  indirectly,  by it shall not
exceed the aggregate fair market value of such hushkit equipment and labor costs
necessary to install such hushkit equipment on such Aircraft.

                         (b) Borrower shall not make  investments in, or make or
accrue  loans or  advances of money  through  the direct or indirect  holding of
securities or otherwise to any Person; provided,  however, that Borrower may own
the  Transferred  Interests  and may invest in Permitted  Investments.  Borrower
shall demand  payment  under any Permitted  SPV  Investment  (or any guaranty or
Letter of Credit  guaranteeing or securing such Permitted SPV Investment) to the
extent  Borrower  needs  funds to make any  payments  due to Lender  under  this
Promissory Note.

                  4.3.  Borrower  shall not  create or permit any Lien on any of
its properties or assets except any of the following ("Permitted Encumbrances"):








                                       13

<PAGE>







(A) Liens for taxes or assessments or other governmental  charges or levies, not
yet due and  payable,  (B) Liens in favor of such Owner  Trustee  pursuant  to a
Trust Agreement or, in each case, workers', mechanics',  suppliers',  carriers',
warehousemen's or other similar Liens arising in the ordinary course of business
and  securing  obligations  that are not yet due and  payable,  (C)  Liens on an
Aircraft  securing  Indebtedness  of Borrower which is permitted by the terms of
this  Promissory  Note and which is incurred  solely to hushkit such Aircraft (a
"Current  Loan");  provided,  however,  that if such Current Loan constitutes an
extension  of credit  pursuant to an existing  financing  facility of  Borrower,
Borrower  may grant,  to secure such  Current  Loan, a Lien on one or more other
Aircraft  if each such  other  Aircraft  is at such time  subject to a Lien that
secures such existing financing facility,  (D) any renewal or replacement of any
Lien permitted by (C) above (in  connection  with  refinancing  of  Indebtedness
permitted by  subsection  4.2(a)(v)  hereof);  provided,  however,  that (x) the
amount of Indebtedness  secured by any such renewal or replacement Lien does not
exceed  the then  outstanding  principal  amount  of the  Indebtedness  being so
refinanced,  (y) such renewal or  replacement  Lien does not spread to cover any
additional  asset  and (z) the  term of the  Indebtedness  secured  by any  such
replacement Lien does not materially  extend beyond the term of the Indebtedness
being so refinanced; (E) leases of the Aircraft and (F) Liens on Aircraft owned,
directly or  indirectly,  by  Borrower of a type that a lessee of such  Aircraft
would  customarily  be  permitted  to incur and be  required to remove from such
Aircraft.

                  4.4.  Borrower  shall  not  issue  or sell or  enter  into any
agreement,  contract or commitment to issue or sell any equity  interest  (other
than those  outstanding as of the date of this Agreement)  unless,  after giving
effect to such  issuance  or sale (a) TASL  shall  remain  the sole  manager  of
Borrower, retaining all responsibilities and duties allocated to TASL as manager
of  Borrower  pursuant to  Borrower's  operating  agreement  or  certificate  of
formation  and shall make no delegation or assignment to any other Person of any
such  responsibility  or duty  except as  permitted  thereby,  (b) the number of
members of Borrower (x) who are not Triton  Members or Triton  Management  shall
not exceed three (3) (y) who are Triton Management shall not exceed five (5) and
(z) who are Triton Members  (excluding TAL, TASL and Triton Container) shall not
exceed five (5), (c) the Triton Members shall hold, in the  aggregate,  at least
50% of the  Economic  Interests  of  Borrower,  (d) the  holder  of such  equity
interest shall be a Qualified Holder,  (e) such Qualified Holder shall expressly
agree to the pledge of such  Interests  under the Security  Agreement  and to be
bound by the terms and conditions thereof,  and (f) after notice to Lender given
pursuant  to the terms of  Section  10  hereof,  Lender  shall  consent  to such
transfer or issuance (such consent not to be unreasonably  withheld);  provided,
however,  that if Lender does not  respond to such  notice  within ten (10) days
after receipt by Lender of such notice,  such consent  shall be deemed  granted.








                                       14

<PAGE>







Notwithstanding  the  foregoing,  no such  issuance  or sale shall be made if it
would  violate  any  applicable  law or cause the  Aircraft  owned,  directly or
indirectly,  by Borrower then registered  under the Act no longer to be eligible
for registration under the Act.

                  4.5.  Borrower  shall not (i) make any  changes in its capital
structure  (including,  without  limitation,  in the  terms  of its  outstanding
membership interests,  stock or any other equity interests,  as the case may be)
except as permitted by Section 4.4 or (ii) amend its operating  agreement or any
other  such  governing  document  (other  than  amendments  (1) with  respect to
allocations of (A) profits and losses,  (B) tax income or gains or tax losses or
any  components  thereof  or (C)  cash  distributions  among  members  or (2) to
implement  actions  permitted under this  Promissory  Note,  provided,  however,
notice of amendments to implement such actions shall be given to Lender no later
than ten (10) days prior to their effectiveness).

                  4.6.  Borrower  shall not engage in any business or activities
except to the  extent  permitted  by  Borrower's  articles  of  organization  or
operating agreement.

                  4.7.   Except  as  otherwise   expressly   permitted  by  this
Promissory  Note,  Borrower  shall not (i) pay or enter  into any  agreement  or
transaction  to  pay  to  any  of  its  Affiliates  any  management,   advisory,
consulting,  service or similar fee or any fee based on or related to Borrower's
operating  performance or income or any percentage  thereof;  or (ii) enter into
any other  transaction  with any of its  Affiliates,  except  any  agreement  or
transaction  entered into pursuant to the reasonable  requirements of Borrower's
ordinary  course  of  business  and upon  terms  that are no less  favorable  to
Borrower than  Borrower  could obtain in a comparable  arm's length  transaction
with a Person not an Affiliate of Borrower.  Borrower shall not enter into or be
a party to any transaction with any Person except for transactions  entered into
upon arm's length terms and conditions that are commercially reasonable and fair
to Borrower.  Borrower shall not enter into any employment agreements or pay any
management  or similar fee to any Person or become  obligated  to pay any Person
any advisory, consulting or service fee except in accordance with the reasonable
needs of Borrower's  business and operations.  Borrower shall not amend or agree
to amend the Keep Well, the Keep Well Guaranty or the Loan Guaranty.

                  4.8. Borrower shall not make capital  expenditures  during the
term of this Promissory Note,  except for capital  expenditures made to fund any
maintenance,  improvements,  additions,  refurbishments  or modifications to any
Aircraft owned, directly or indirectly, by Borrower.








                                       15

<PAGE>







                  4.9.  (a)  Borrower  shall  not  sell,  transfer,   convey  or
otherwise  dispose  of any assets or  properties;  provided,  however,  that the
foregoing  shall not  prohibit  (i)  transfers  resulting  from any  casualty or
condemnation  of assets or  properties or (ii) sales of engines or parts that do
not constitute Prepayment Events pursuant to Section 3.8(a). Notwithstanding the
foregoing,  Borrower may, subject to Section 3.8 hereof, sell Assets without the
consent of the holder of this Promissory Note if the proceeds from any such sale
(net of any costs and  expenses  or other  obligations  incurred  by Borrower in
connection  with  such  sale)  equal or  exceed  100% of the  Allocable  Portion
Percentage  for such Asset  multiplied by the then  outstanding  balance of this
Promissory Note.

                        (b)  Borrower  shall  not  sell,  transfer,   convey  or
otherwise  dispose of all or any  portion of any Asset for an amount (net of any
costs,  expenses or other  obligations  incurred by Borrower in connection  with
such sale, transfer,  conveyance or disposition) less than 100% of the Allocable
Portion  Percentage of such Asset multiplied by the then outstanding  balance of
this  Promissory  Note without the prior  written  consent of the holder of this
Promissory  Note  unless  Borrower  has  sufficient  funds  available  from  (a)
operating cash flow,  exclusive of security  deposits,  maintenance  reserves or
other  property  held by it as  collateral,  (b) the  issuance or sale of equity
interests  in  Borrower,  (c)  sale  proceeds  held by it from the sale of other
Aircraft owned, directly or indirectly by it, (d) funds paid to Borrower by TASL
under  the Keep  Well if the  Asset is  disposed  of for an  amount  equal to or
greater than the product of (1) 90% of the Allocable Portion Percentage for such
Asset multiplied by (2) the then outstanding balance of this Promissory Note, or
(e) any combination of the foregoing, which funds, when added to the proceeds of
the  disposition  of  such  Asset  (net  of any  costs  and  expenses  or  other
obligations  incurred  by  Borrower  in  connection  with such  sale,  transfer,
conveyance or  disposition)  will equal the product of (A) 100% of the Allocable
Portion Percentage of such Asset multiplied by (B) the then outstanding  balance
of this  Promissory  Note. If Borrower  sells,  transfers,  conveys or otherwise
disposes  of  less  than  100%  of  an  Asset,  the  percentage  interest  sold,
transferred,  conveyed  or  otherwise  disposed  of shall be  multiplied  by the
appraised  value of the entire  Asset and the product  thereof  shall be used to
calculate the Allocable Portion Percentage of such Asset for the purposes of the
immediately preceding sentence.

                  4.10. Borrower shall not (A) prepay,  defease,  redeem, retire
or  otherwise  acquire  any  obligation  or  Indebtedness  owed by it  except as
permitted by this Promissory Note, as required by Section 3.8 of this Promissory
Note or as required by any Permitted SPV  Indebtedness,  (B) cancel,  forgive or
waive any claim,  debt or Indebtedness  owing to it, (C) declare any dividend or
other  distribution or incur any liability in respect  thereof,  with respect to








                                       16

<PAGE>







the membership  interests (or any other equity  interest) in Borrower other than
(1) beginning as of April 1, 1997, payable in the next following calendar month,
the Equity Dividend Amount and any accrued and unpaid Equity Dividend Amount for
each month thereafter,  (2) amounts equal to equity  contributions made pursuant
to the Keep Well which have not been previously  recouped through the payment of
any dividend or distribution  and (3) amounts equal to any reduction of the Cash
Amount pursuant to Section 4(c) or Section  4(d)(ii) of the Purchase  Agreement;
provided,  however,  that  during  any  period in which any  payment  under this
Promissory Note is overdue or a Default has occurred and is continuing, Borrower
shall not declare,  pay,  incur any liability in respect of or make any dividend
or other distribution whatsoever but Borrower may continue to accrue a liability
equal to the Equity  Dividend  Amount  during such period and  Borrower may make
payments in respect of any such accrued  liability so long as no amounts due and
payable under this  Promissory Note are overdue and no Default is continuing and
provided,  further,  that all dividends or  distributions  by Borrower  shall be
declared,  paid or made only in accordance with applicable law, or (D) incur any
liability to, or engage in any purchase,  redemption or retirement  transaction,
with  respect to the  membership  interests  (or any other  equity  interest) of
Borrower.

                  4.11. Borrower shall not directly or indirectly enter into any
employee  benefit  plan as  defined  in  Section  3(3) of  ERISA,  nor any other
employee  benefit   arrangements  or  payroll  practices,   including,   without
limitation,  severance pay, sick leave,  vacation pay, salary  continuation  for
disability,  consulting or other compensation agreements,  retirement,  deferred
compensation,  bonus, stock purchase,  hospitalization,  medical insurance, life
insurance or scholarship programs.

         5.0  Events of  Default.  The  following  shall be  Events  of  Default
hereunder:

                  5.1.  Borrower  shall fail to make any payment of principal or
interest owing in respect of this Promissory Note including, without limitation,
any prepayment required pursuant to Section 3.8 hereof, when due and payable.

                  5.2.  Borrower  shall  fail to make any  payment  of any other
amount owing in respect of this  Promissory Note within five (5) days after such
other amount becomes due and payable.

                  5.3.  Borrower  shall fail to perform,  keep or observe any of
the covenants contained in Sections 3, 4 or 8 of this Promissory Note.

                  5.4. Borrower shall fail to perform, keep or observe any other
provision of this  Promissory  Note or any provision of the Security  Agreement,








                                       17

<PAGE>







and the same shall remain unremedied for a period of ten (10) days after receipt
of written notice thereof from Lender.

                  5.5. Any representation or warranty made herein by Borrower or
in any  Ancillary  Agreement to which it is a party shall be untrue or incorrect
in any material respect as of the date when made.

                  5.6. Any provision of the Security  Agreement,  the Keep Well,
the  Keep  Well  Guaranty  or the Loan  Guaranty  shall  cease  to be valid  and
enforceable in any material respect in accordance with its terms.

                  5.7. Any Person  (other than Lender)  shall fail or neglect to
perform,  keep or observe any  provision  of any of the  Ancillary  Agreement to
which it is a party,  and the same shall remain  unremedied  for a period of ten
(10) days after receipt by such Person of written notice thereof from Lender.

                  5.8.  Any other event shall have  occurred  which would have a
Material Adverse Effect.

                  5.9. Final judgment or judgments  (after the expiration of all
times to appeal  therefrom) for the payment of money in excess of $109,470 shall
be  rendered  against  Borrower  and the  same  shall  not be fully  covered  by
insurance or vacated,  stayed, bonded, paid or discharged for a period of thirty
(30) days.

                  5.10.  There  shall  occur any  default  under any  agreement,
document or instrument to which  Borrower is a party or by which Borrower or any
of  Borrower's  property is bound (other than this  Promissory  Note),  and such
default results in the acceleration,  maturity,  demand or required repayment of
Indebtedness or other obligations due thereunder that singly or in the aggregate
exceeds $109,470.

                  5.11. Borrower shall fail to maintain insurance as required by
Section 3.6 of this Promissory Note.

                  5.12.  Any of the assets (with value,  individually  or in the
aggregate, in excess of $109,470) of Borrower shall be attached,  seized, levied
upon or subjected to a writ or distress  warrant,  or come within the possession
of any receiver,  trustee, custodian or assignee for the benefit of creditors of
Borrower and shall remain  unstayed or undismissed  for thirty (30)  consecutive
days; or any person other than  Borrower  shall apply for the  appointment  of a








                                       18

<PAGE>







receiver,  trustee  or  custodian  for any of the assets of  Borrower  and shall
remain  unstayed or undismissed  for thirty (30)  consecutive  days; or Borrower
shall have concealed,  removed or permitted to be concealed or removed, any part
of the  property  of  Borrower  with  intent to  hinder,  delay or  defraud  its
creditors  or any of them or made or suffered a transfer of any of its  property
or the incurring of any  obligation  which may be fraudulent  under  bankruptcy,
fraudulent conveyance or other similar law.

                  5.13. A case or proceeding  shall have been commenced  against
Borrower in a court having competent  jurisdiction  seeking a decree or order in
respect  of  Borrower  (i) under  title 11 of the  United  States  Code,  as now
constituted or hereafter  amended,  or any other  applicable  Federal,  state or
foreign bankruptcy or other similar law, (ii) appointing a custodian,  receiver,
liquidator,  assignee, trustee or sequestrator (or similar official) of Borrower
or of any substantial  part of its properties,  or (iii) ordering the winding-up
or  liquidation  of the affairs of Borrower  and such case or  proceeding  shall
remain  undismissed or unstayed for thirty (30)  consecutive  days or such court
shall  enter a decree  or order  granting  the  relief  sought  in such  case or
proceeding.

                  5.14.  Borrower shall (i) file a petition seeking relief under
title 11 of the United States Code, as now constituted or hereafter amended,  or
any other applicable Federal,  state or foreign bankruptcy or other similar law,
(ii) consent to the  institution of  proceedings  thereunder or to the filing of
any such petition or to the appointment of or taking  possession by a custodian,
receiver, liquidator, assignee, trustee or sequestrator (or similar official) of
Borrower or of any  substantial  part of the  property of  Borrower,  (iii) fail
generally  to pay its debts as such debts  become due or (iv) take any action in
furtherance of the foregoing.

                  Upon the  occurrence  and during the  continuance  of any such
Event of Default under Sections 5.1 through 5.11 hereof,  the holder hereof may,
by  written  notice to  Borrower,  declare  the  entire  unpaid  balance of this
Promissory  Note to be  immediately  due and payable,  whereupon  the same shall
forthwith mature without  presentment,  demand,  protest or other notice, all of
which are hereby waived.  Upon the occurrence and during the  continuance of any
Event of Default under Sections 5.12 through 5.14 hereof,  this  Promissory Note
shall  immediately  mature and be due and payable without  presentment,  demand,
protest or other notice, all of which are hereby waived.

         6.0 Purchase, Assignment and Assumption Agreement. This Promissory Note
represents  the Note Amount due under the  Purchase  Agreement in respect of the
Transferred Interests.








                                       19

<PAGE>







         7.0  Security  Agreement.  All  obligations  due  Lender  by  Borrower,
including, without limitation, those evidenced by this Promissory Note, shall be
secured pursuant to the Security Agreement.

         8.0 Costs and Expenses.  Borrower shall reimburse Lender for all of its
costs and expenses  (including  reasonable  attorneys'  fees)  incurred by it in
connection with the indebtedness  evidenced  hereby,  lien searches and filings,
the Security  Agreement  and related  documents  and any  amendments  thereto or
waivers or modifications thereof; provided,  however, that Borrower shall not be
obligated to pay any costs or expenses  (including  attorney's fees) incurred by
Lender in  connection  with  preparation  of this  Promissory  Note or any other
Ancillary Agreement or any ordinary  administrative costs and expenses of Lender
in the absence of a default by Borrower under this  Promissory Note or any other
Ancillary Agreement to which it is a party. Borrower shall also reimburse Lender
or any other holder hereof for all costs  incurred by it  (including  reasonable
attorneys'  fees) in the enforcement or collection of any amounts due under this
Promissory  Note.  Borrower  shall  indemnify and hold Lender  harmless from and
against all losses, claims, damages, costs and expenses, arising from the seller
financing  evidenced by this  Promissory Note or the  transactions  contemplated
hereby; provided,  however, that such indemnity obligation shall not limit or be
deemed to limit Borrower's rights under Section 13 of the Purchase Agreement.

         9.0 No Waiver.  No delay,  failure or omission by the holder  hereof in
respect of any default by Borrower  to exercise  any right or remedy  granted to
the holder  hereof or allowed to the  holder  hereof by law shall  constitute  a
waiver  of the  right to  exercise  such  right or remedy  upon any  default  or
subsequent default.

         10.0   Notices.   All   notices,   demands,   declarations   and  other
communications required by this Promissory Note shall be in writing and shall be
effective  (i) if  given  by  facsimile,  when  transmitted,  (ii) if  given  by
registered or certified mail, three (3) Business Days after being deposited with
the U.S. Postal Service,  (iii) if given by courier,  when received,  or (iv) if
personally delivered, when so delivered, addressed:








                                       20

<PAGE>







                  If to Borrower, to:

                             Triton Aviation Services III LLC
                             55 Green Street, Suite 500
                             San Francisco, CA  94111
                             Attn:  President
                             Facsimile Number:  (415) 398-9184

or to such  other  address as  Borrower  shall  from time to time  designate  in
writing to Lender; and

                  If to Lender, to:

                             c/o Polaris Investment Management Corporation
                             201 Mission Street, 27th Floor
                             San Francisco, CA  94105
                             Attention:  President
                             Facsimile Number:  (415) 284-7460

                  With a copy to:

                             c/o Polaris Investment Management Corporation
                             201 High Ridge Road, 1st Floor
                             Stamford, CT  06927-4900
                             Attention:  Portfolio Management
                             Facsimile Number:  (203) 357-4585

or to such other address as Lender may from time to time designate in writing to
Borrower.

         11.0 Confidentiality. Lender agrees that it shall keep confidential all
information  regarding  Borrower  that it may  receive  in  connection  with the
transactions  contemplated  by this Promissory Note and agrees that it will only
use such information in connection with such  transactions and will not disclose
any of such information  other than (i) to its directors,  officers,  employees,
advisors,  auditors,  agents or  representatives  who are or are  expected to be
involved  in  the  evaluation  of  such  information  in  connection  with  such
transactions and who are advised of the confidential  nature of such information
(and for whose  compliance  Lender  shall be  liable),  (ii) to the extent  such
information  presently  is  or  hereafter  becomes  available  to  Lender  on  a








                                       21

<PAGE>







non-confidential  basis from a source other than  Borrower,  (iii) to the extent
such information has been independently  acquired or developed by Lender without
violating  any of its  obligations  under this  Promissory  Note, or (iv) to the
extent disclosure is required by law, regulation or judicial order.

         12.0 Permitted Indebtedness. Lender agrees to execute from time to time
a certificate  verifying  whether or not Lender has declared an Event of Default
that  is  continuing  as of  the  date  of  such  certificate  and  stating  the
outstanding  principal amount of and interest accrued on this Promissory Note as
of the date of such certificate as Borrower may reasonably request in connection
with incurring Indebtedness for hushkit financing that is permitted by the terms
of this Promissory Note.

         13.0 No Recourse to Members. Without impairing any of the other rights,
powers, privileges, liens or security interests of Lender hereunder or under any
other  Ancillary  Agreement  (which term for purposes of this Section 13.0 shall
include  the  Purchase  Agreement),  Lender and each  subsequent  holder of this
Promissory  Note  agrees  that  (i)  the  obligations  of  Borrower  under  this
Promissory Note and the other Ancillary Agreements,  howsoever created,  arising
or  evidenced,  whether  direct or  indirect,  absolute  or  contingent,  now or
hereafter  existing,  or due or to become due,  including,  without  limitation,
obligations  relating  to  principal,  interest or any breach by Borrower of any
representation,  warranty,  covenant or  indemnity  made by  Borrower,  shall be
payable  only  from  the  assets  of  Borrower,   and  all  of  the  statements,
representations,  covenants and  agreements  made by Borrower  herein and in any
other  Ancillary  Agreement  are  made and  intended  only  for the  purpose  of
establishing  the  existence of rights and remedies  which can be exercised  and
enforced against the assets of Borrower;  and (ii) no recourse shall be had with
respect to any  representation,  warranty,  covenant or  indemnity  made by this
Promissory Note or any other Ancillary  Agreement against any member of Borrower
or any  officer,  director,  employee,  trustee,  servant or direct or  indirect
controlling  Person or Persons of any member, and no such Persons shall have any
personal  liability  for any  amounts  payable  hereunder  or  under  any  other
Ancillary  Agreement or for any damages for breach thereof;  provided,  however,
nothing  contained in this Section 13.0 shall be construed to limit the exercise
or enforcement,  in accordance with the terms hereof or any Ancillary Agreement,
of rights and  remedies  against the assets of Borrower;  and provided  further,
however,  that  nothing  in this  Section  13.0  shall (A)  release  any  Person
(including,  without  limitation,  any member or the manager of  Borrower)  from
personal  liability  for any  obligation  of such  Person  under  any  Ancillary
Agreement  to which it is a party,  howsoever  created,  arising  or  evidenced,
whether direct or indirect,  absolute or contingent,  now or hereafter existing,
or due or to become due, including, without limitation,  obligations relating to
(1) breach by such Person of any representation, warranty, covenant or indemnity








                                       22

<PAGE>







made by such  Person or (2) any  actual  fraud by the  manager  or any member of
Borrower,  or (B)  release  TIL from  personal  liability  for any breach of its
obligations  under or  resulting  from the  breach by TIL of any  representation
warranty, covenant or indemnity made by TIL pursuant to the Loan Guaranty or the
Keep Well  Guaranty  or  release  TASL from  personal  liability  for any of its
obligations  under or resulting  from the breach by TASL of any  representation,
warranty,  covenant or indemnity  made by TASL  pursuant to the Keep Well or the
Security  Agreement.  For  purposes of this  Promissory  Note and the  Ancillary
Agreements,  the assets of Borrower shall in no event include,  nor shall Lender
or any  subsequent  holder  have any  recourse  against or claim to, any deficit
capital  account owed to Borrower by a member of Borrower,  except to the extent
of  distributions  made to such member by Borrower in  violation of the terms of
this Promissory Note.

         14.0  Waiver of Trial by Jury.  THE PARTIES  HERETO  WAIVE ALL RIGHT TO
TRIAL BY JURY IN ANY  ACTION OR  PROCEEDING  TO  ENFORCE OR DEFEND ANY RIGHTS OR
REMEDIES HEREUNDER, OR UNDER THE SECURITY AGREEMENT.

         15.0 Waiver. Borrower and all endorsers and guarantors hereby severally
waive demand, presentment,  notice of dishonor, diligence in collection,  notice
of protest, notice of intent to accelerate, notice of acceleration, and agree to
all extensions and partial payments before or after maturity,  without prejudice
to the holder of this Promissory Note.









                                       23

<PAGE>







         16.0.  Governing  Law.  THIS  PROMISSORY  NOTE  SHALL BE DEEMED TO BE A
CONTRACT UNDER,  AND SHALL BE GOVERNED BY,  CONSTRUED AND ENFORCED IN ACCORDANCE
WITH THE LAWS OF THE  STATE OF  CALIFORNIA,  WITHOUT  REGARD  TO THE  PRINCIPLES
THEREOF RELATING TO CONFLICT OF LAWS.

                                            TRITON AVIATION SERVICES III LLC

                                            By:  Triton Aviation Services
                                                    Limited, Manager



                                            By:/S/JOHN E. FLYNN
                                               -------------------------
                                            Name:  JOHN E. FLYNN
                                            Title: PRESIDENT








                                       24

<PAGE>








Accepted and Acknowledged by

POLARIS AIRCRAFT INCOME FUND III

By:  Polaris Investment Management
       Corporation, General Partner

By:/S/MARC A. MEICHES
   ------------------------------
Name:  MARC A. MEICHES
Title: VICE PRESIDENT









                                       25

<PAGE>







                                   SCHEDULE A

                       Principal Payments as a Percentage
                               of Original Balance

              Principal                 Balloon                     Total
              Payments                  Payment                   Payments
              --------                  -------                   --------
              1.9047%                                             1.9047%
              1.9618%                                             1.9618%
              2.0207%                                             2.0207%
              2.0813%                                             2.0813%
              2.1437%                                             2.1437%
              2.2080%                                             2.2080%
              2.2743%                                             2.2743%
              2.3425%                                             2.3425%
              2.4128%                                             2.4128%
              2.4852%                                             2.4852%
              2.5597%                                             2.5597%
              2.6365%                                             2.6365%
              2.7156%                                             2.7156%
              2.7971%                                             2.7971%
              2.8810%                                             2.8810%
              2.9674%                                             2.9674%
              3.0564%                                             3.0564%
              3.1481%                                             3.1481%
              3.2426%                                             3.2426%
              3.3398%                                             3.3398%
              3.4400%                                             3.4400%
              3.5432%                                             3.5432%
              3.6495%                                             3.6495%
              3.7590%                                             3.7590%
              3.8718%                                             3.8718%
              3.9879%                                             3.9879%









<PAGE>






                       Principal Payments as a Percentage
                               of Original Balance

              Principal                 Balloon                     Total
              Payments                  Payment                   Payments
              --------                  -------                   --------
             
              4.1076%                                              4.1076%
              4.2308%                   18.23%                    22.4619%
              0.0000%                   0.0000%                    0.0000%
              0.0000%                   0.0000%                    0.0000%
              0.0000%                   0.0000%                    0.0000%
              0.0000%                   0.0000%                    0.0000%
              -------                   -------                    -------
              81.7689%                 18.2311%                   100.0000%




                              GUARANTY (KEEP WELL)


                  GUARANTY,  dated as of April 1,  1997,  of TRITON  INVESTMENTS
LIMITED,  a  Bermuda  corporation  ("Guarantor"),  in favor of  TRITON  AVIATION
SERVICES  III LLC, a  California  limited  liability  company  ("Borrower")  and
POLARIS AIRCRAFT INCOME FUND III, a California  limited  partnership  ("Lender")
(Borrower and Lender each sometimes  referred to herein as a "Beneficiary"  and,
together, as the "Beneficiaries").

                              W I T N E S S E T H:

                  WHEREAS,  Borrower  and Lender have  entered  into a Purchase,
Assignment  and Assumption  Agreement  dated as of April 1, 1997 (as at any time
amended, modified or supplemented,  the "Purchase Agreement") and, in connection
therewith,  Borrower has delivered to Lender a promissory  note  effective as of
April 1, 1997 (the "Note"); and

                  WHEREAS,   Triton  Aviation   Services   Limited,   a  Bermuda
corporation and a majority-owned and controlled subsidiary of Guarantor ("TASL")
is the record and beneficial  owner of 99% of the member  interests in Borrower;
and

                  WHEREAS,  TASL,  Borrower  and Lender have entered into a Keep
Well  Agreement of even date herewith (the "Keep Well"),  pursuant to which TASL
has agreed to pay certain  amounts to Borrower as a  contribution  to Borrower's
equity in order to permit  Borrower  promptly to perform all of its  obligations
under the Note and the Purchase Agreement; and

                  WHEREAS, Guarantor, as the majority owner of TASL, will derive
substantial   direct  and  indirect   economic  benefit  from  the  transactions
contemplated  by the Purchase  Agreement,  the Keep Well and the delivery of the
Note to Lender; and

                  WHEREAS,  in connection with the execution and delivery of the
Purchase  Agreement,  the  Keep  Well  and  the  Note  and as  security  for the
Obligations  (as defined  below),  each of the  Beneficiaries  is requiring that
Guarantor shall have executed and delivered this Guaranty;



<PAGE>



                  NOW,  THEREFORE,  in  consideration  of the  premises  and the
covenants hereinafter contained, and to induce Lender to enter into the Purchase
Agreement, it is agreed as follows:

                  1. DEFINITIONS. Unless otherwise defined herein, terms defined
in the Note are used herein as therein  defined,  and the  following  shall have
(unless otherwise provided elsewhere in this Guaranty) the following  respective
meanings (such meanings being equally applicable to both the singular and plural
form of the terms defined):

                  "Obligations"  means all  obligations  of any kind or  nature,
present or future, of TASL under the Keep Well.

                  References  to  this  "Guaranty"  shall  mean  this  Guaranty,
including all  amendments,  modifications  and  supplements  and any exhibits or
schedules to any of the foregoing,  and shall refer to this Guaranty as the same
may be in effect at the time such reference becomes operative.

                  2.  THE GUARANTY.  The guaranty of Guarantor hereunder is as
follows:

                  2.1.  Guaranty  of  Obligations  of  TASL.   Guarantor  hereby
unconditionally  guarantees to each of the  Beneficiaries  and their  respective
successors,  endorsees,  transferees and assigns, the prompt payment (whether at
stated   maturity,   by  acceleration  or  otherwise)  and  performance  of  the
Obligations.  Guarantor  agrees that this  Guaranty is a guaranty of payment and
performance and not of collection,  and that its obligations under this Guaranty
shall be primary,  absolute and  unconditional,  irrespective of, and unaffected
by:

                           (a)   the    genuineness,    validity,    regularity,
         enforceability  or any future amendment of, or change in this Guaranty,
         the Keep Well, the Note or any other agreement,  document or instrument
         to which  Borrower,  TASL,  Lender  and/or  Guarantor  is or are or may
         become a party;

                           (b)  the  absence  of  any  action  to  enforce  this
         Guaranty,  the Keep Well, the Note or any other agreement,  document or
         instrument to which Borrower,  TASL,  Lender and/or Guarantor is or are
         or may become a party,  or the waiver or consent by Lender with respect
         to any of the provisions thereof;



                                        2

<PAGE>



                           (c) the existence,  value or condition of, or failure
         to perfect its lien against,  any security for the  Obligations  or any
         action,  or the absence of any action,  by any  Beneficiary  in respect
         thereof  (including,  without  limitation,  the  release  of  any  such
         security); or

                           (d) any other  action or  circumstances  which  might
         otherwise  constitute  a legal or  equitable  discharge or defense of a
         surety or guarantor,

it being agreed by Guarantor that its obligations  under this Guaranty shall not
be discharged  until the payment and  performance,  in full, of the Obligations.
Guarantor  shall be regarded,  and shall be in the same  position,  as principal
debtor with respect to the Obligations. Guarantor expressly waives all rights it
may have now or in the future under any statute,  or at common law, or at law or
in equity,  or  otherwise,  to compel (i)  Borrower to proceed in respect of the
Obligations against TASL or any other party or (ii) Lender to proceed in respect
of the Obligations  against  Borrower or TASL or any other party, or against any
security for the payment and  performance of the Obligations  before  proceeding
against,  or as a condition to proceeding against,  Guarantor.  Guarantor agrees
that  any  notice  or  directive  given at any  time to a  Beneficiary  which is
inconsistent with the waiver in the immediately preceding sentence shall be null
and void and may be ignored by such  Beneficiary,  and, in addition,  may not be
pleaded or  introduced as evidence in any  litigation  relating to this Guaranty
for the reason that such pleading or introduction  would be at variance with the
written terms of this Guaranty,  unless such Beneficiary has specifically agreed
otherwise in writing. It is agreed among Guarantor and each of the Beneficiaries
that the foregoing waivers are of the essence of the transaction contemplated by
the Purchase  Agreement  and the Note and that,  but for this  Guaranty and such
waivers,  the Beneficiaries  would decline to enter into the Purchase  Agreement
and to deliver the Note.

                  2.2.  Demand by  Beneficiary.  In addition to the terms of the
Guaranty  set  forth in  Section  2.1  hereof,  and in no  manner  imposing  any
limitation on such terms,  it is expressly  understood  and agreed that, if TASL
has failed to make any  payments  required to be made under the Keep Well,  then
Guarantor shall,  upon demand in writing therefor by a Beneficiary to Guarantor,
pay to such Beneficiary the entire outstanding Obligations due and owing to such
Beneficiary;  provided,  however,  if  both  Beneficiaries  shall  make  demand,
Guarantor  shall make the  payment to Lender and  Borrower  shall give Lender 10
days prior written  notice of the failure of TASL to make any payments due under
the Keep Well prior to demand by Borrower  upon  Guarantor;  provided,  further,
that if at any time Lender shall notify  Guarantor  that any amounts are due and
owing to it by Borrower,  then until such notice has been revoked by Lender, any
payments to be made by Guarantor  hereunder shall be made by Guarantor  directly



                                        3

<PAGE>



to Lender and Lender shall apply all  payments  received  from  Guarantor in the
same manner as though paid directly by Borrower.

                  2.3.  Enforcement of Guaranty.  In no event shall (i) Borrower
have any obligation  (although it is entitled at its option) to proceed  against
TASL or any other Person or any real or personal  property pledged to secure the
Obligations, or (ii) Lender have any obligation (although it is entitled, at its
option) to proceed  against  Borrower or TASL or any other Person or any real or
personal property pledged to secure the Obligations, before seeking satisfaction
from  Guarantor.   A  Beneficiary  may  proceed,  prior  or  subsequent  to,  or
simultaneously with, the enforcement of such Beneficiary's rights hereunder,  to
exercise  any right or remedy which it may have  against any  property,  real or
personal, as a result of any lien it may have as security for all or any portion
of the Obligations.

                  2.4. Waiver.  In addition to the waivers  contained in Section
2.1 hereof,  Guarantor  waives,  and agrees that it shall not at any time insist
upon, plead or in any manner whatever claim or take the benefit or advantage of,
any appraisal,  valuation, stay, extension,  marshalling of assets or redemption
laws, or  exemption,  whether now or at any time  hereafter in force,  which may
delay,  prevent  or  otherwise  affect  the  performance  by  Guarantor  of  its
obligations  under, or the enforcement by the  Beneficiaries  of, this Guaranty.
Guarantor  hereby  waives   diligence,   presentment  and  demand  (whether  for
non-payment or protest or of acceptance,  maturity, extension of time, change in
nature or form of the Obligations,  acceptance of further  security,  release of
further  security,  composition or agreement  arrived at as to the amount of, or
the terms of, the Obligations,  notice of adverse change in Borrower's or TASL's
financial  condition or any other fact which might materially  increase the risk
to  Guarantor)  with  respect  to any of the  Obligations  or all other  demands
whatsoever and waives the benefit of all provisions of law which are or might be
in conflict with the terms of this Guaranty. Guarantor repre sents, warrants and
agrees  that,  as of the  date of this  Guaranty,  its  obligations  under  this
Guaranty  are not  subject to any offsets or defenses  against  Lender,  TASL or
Borrower of any kind.  Guarantor  further agrees that its obligations under this
Guaranty shall not be subject to any counterclaims,  offsets or defenses against
Lender or against Borrower or TASL of any kind which may arise in the future.

                  2.5. Benefit of Guaranty.  The provisions of this Guaranty are
for  the  benefit  of  the  Beneficiaries   and  their  respective   successors,
transferees,  endorsees and assigns,  and nothing herein contained shall impair,
as  between  TASL and  Lender  or TASL  and  Borrower,  as the case may be,  the
obligations  of TASL  under the Keep  Well.  In the event all or any part of the



                                        4

<PAGE>



Obligations  are  transferred,  indorsed  or assigned by Lender to any Person or
Persons,  any  reference to "Lender"  herein shall be deemed to refer equally to
such Person or Persons.

                  2.6.  Modification  of  Obligations,  Etc.  If  Lender  and/or
Borrower shall at any time or from time to time, with or without the consent of,
or notice to, Guarantor:

                           (a)  change or extend the  manner,  place or terms of
payment of, or renew or alter all or any portion of, the Obligations;

                           (b) take any  action  under or in respect of the Keep
Well in the  exercise of any remedy,  power or  privilege  contained  therein or
available to it at law, equity or otherwise, or waive or refrain from exercising
any such remedies, powers or privileges;

                           (c) amend or modify,  in any manner  whatsoever,  the
Keep Well;

                           (d) extend or waive the time for any of  Guarantor's,
Borrower's, TASL's or any other Person's performance of, or compliance with, any
term,  covenant or agreement  on its part to be performed or observed  under the
Keep Well, or waive such  performance  or compliance or consent to a failure of,
or departure from, such performance or compliance;

                           (e) take  and hold  security  or  collateral  for the
payment of the Obligations guaranteed hereby or sell, exchange, release, dispose
of, or otherwise deal with, any property pledged,  mortgaged or conveyed,  or in
which Lender has been granted a lien, to secure any  indebtedness  of Guarantor,
Borrower or TASL to Lender or of Guarantor or TASL to Borrower,  as the case may
be;

                           (f)  release  anyone  who may be liable in any manner
         for the payment of any amounts owed by  Guarantor,  Borrower or TASL to
         Lender or by Guarantor or TASL to Borrower, as the case may be;

                           (g)   modify   or   terminate   the   terms   of  any
         intercreditor  or subordination  agreement  pursuant to which claims of
         other creditors of Guarantor,  Borrower or TASL are subordinated to the
         claims of Lender and/or

                           (h)  apply  any  sums by  whomever  paid  or  however
         realized to any amounts owing by Guarantor,  Borrower or TASL to Lender



                                        5

<PAGE>



         or by  Guarantor,  or TASL to  Borrower,  in such  manner  as Lender or
         Borrower, as the case may be, shall determine in its discretion;

then Lender and/or Borrower shall not incur any liability to Guarantor  pursuant
hereto as a result  thereof,  and no such  action  shall  impair or release  the
obligations of Guarantor under this Guaranty.

                  2.7.  Reinstatement.  This Guaranty shall remain in full force
and effect and  continue  to be  effective  should any  petition  be filed by or
against Borrower,  TASL or Guarantor for liquidation or  reorganization,  should
Borrower,  TASL or  Guarantor  become  insolvent or make an  assignment  for the
benefit of creditors or should a receiver or trustee be appointed for all or any
significant part of Borrower's, TASL's or Guarantor's assets, and shall continue
to be effective or be reinstated, as the case may be, if at any time payment and
performance of the Obligations,  or any part thereof, is, pursuant to applicable
law,  rescinded or reduced in amount,  or must otherwise be restored or returned
by a Beneficiary,  whether as a "voidable preference",  "fraudulent conveyance",
or otherwise,  all as though such payment or  performance  had not been made. In
the  event   that any  payment,  or any part  thereof,  is  rescinded,  reduced,
restored or returned,  the  Obligations  shall be reinstated  and deemed reduced
only by such amount paid and not so rescinded, reduced, restored or returned.

                  2.8. Waiver of Subrogation Etc. (a) If, pursuant to applicable
law, Guarantor, by payment or otherwise, becomes subrogated to all or any of the
rights of the Beneficiaries or either of them under the Keep Well, the rights of
such  Beneficiary to which  Guarantor  shall be subrogated  shall be accepted by
Guarantor "as is" and without any representation or warranty of any kind by such
Beneficiary,  express or implied, with respect to the legality,  value, validity
or enforceability of any of such rights, or the existence,  availability, value,
merchantability  or fitness for any  particular  purpose of any  collateral  and
shall be without recourse to such Beneficiary.

                  (b) If a Beneficiary  may, under  applicable  law,  proceed to
realize its benefits  under the Keep Well,  giving such  Beneficiary a lien upon
any collateral, whether owned by TASL or by any other Person, either by judicial
foreclosure or by non-judicial sale or enforcement, such Beneficiary may, at its
sole option,  determine  which of its  remedies or rights it may pursue  without
affecting  any of its  rights  and  remedies  under  this  Guaranty.  If, in the
exercise of any of its rights and remedies,  such Beneficiary  shall forfeit any
of its rights or remedies,  including  its right to enter a deficiency  judgment
against  TASL or any  other  Person,  whether  because  of any  applicable  laws
pertaining to "election of remedies" or the like,  Guarantor  hereby consents to



                                        6

<PAGE>



such action by such  Beneficiary  and waives any claim  based upon such  action,
even if such action by such  Beneficiary  shall result in a full or partial loss
of any rights of subrogation  which  Guarantor  might otherwise have had but for
such action by such  Beneficiary.  Any election of remedies which results in the
denial or impairment of the right of a Beneficiary to seek a deficiency judgment
against TASL or any other Person shall not impair Guarantor's  obligation to pay
the full amount of the Obligations.  In the event a Beneficiary shall bid at any
foreclosure  or trustee's  sale or at any private  sale  permitted by law or the
Keep  Well,  such  Beneficiary  may bid  all or  less  than  the  amount  of the
Obligations and the amount of such bid need not be paid by such  Beneficiary but
shall be credited against the  Obligations.  The amount of the successful bid at
any such  sale,  whether  a  Beneficiary  or any other  party is the  successful
bidder,  shall  be  conclusively  deemed  to be the  fair  market  value  of the
collateral and the difference  between such bid amount and the remaining balance
of  the  Obligations  shall  be  conclusively  deemed  to be the  amount  of the
Obligations guaranteed under this Guaranty,  notwithstanding that any present or
future  law or court  decision  or ruling may have the  effect of  reducing  the
amount of any  deficiency  claim to which such  Beneficiary  might  otherwise be
entitled but for such bidding at any such sale.

                  2.9. Continuing Guaranty.  Guarantor agrees that this Guaranty
is a  continuing  guaranty  and shall  remain in full force and effect until the
payment and performance in full of the Obligations.

                  2.10. Limitation on Guaranty.  Notwithstanding anything to the
contrary  contained herein, in no event shall Guarantor's  obligation under this
Guaranty  with  respect  to  the  Obligations  exceed  an  amount  equal  to the
outstanding  Maximum  Obligation (as defined in the Keep Well) of TASL under the
Keep Well;  provided,  however,  that  nothing in this  Section 2.10 shall limit
Guarantor's  obligations  or  liabilities  in  respect  of the  representations,
warranties  and  covenants of Guarantor  set forth in this  Guaranty.  Except as
expressly set forth in this Guaranty,  Guarantor  shall have no obligation  with
respect to the Note.

                  3. REPRESENTATIONS AND WARRANTIES. To induce the Beneficiaries
to enter into the Purchase  Agreement and accept the Note,  Guarantor  makes the
following  representations and warranties to the Beneficiaries,  each and all of
which shall survive the execution and delivery of this Guaranty:

                  3.1. Corporate  Existence;  Compliance with Law. Guarantor (i)
is a corporation duly organized, validly existing and in good standing under the
laws of Bermuda;  (ii) is duly  qualified to do business and is in good standing
under the laws of each jurisdiction  where its ownership or lease of property or
the  conduct  of  its  business   requires   such   qualification   (except  for



                                        7

<PAGE>



jurisdictions  in which such  failure  so to  qualify or to be in good  standing
would not have a  materially  adverse  effect on (A) the  business,  operations,
prospects or financial condition of Guarantor, or (B) Guarantor's ability to pay
or perform the Obligations in accordance  with the terms hereof);  (iii) has the
requisite  corporate  power and  authority  and the legal right to own,  pledge,
mortgage  and operate  its properties, to lease  the property  it operates under
lease,  and to conduct  its  business  as now,  heretofore  and  proposed  to be
conducted;  (iv) has all material licenses,  permits, consents or approvals from
or by,  and has made all  material  filings  with,  and has given  all  material
notices to, all  governmental  authorities  having  jurisdiction,  to the extent
required for such  ownership,  operation and conduct;  (v) is in compliance with
its articles of incorporation and by-laws or other organizational documents; and
(vi) is in compliance with all applicable provisions of law where the failure to
so  comply  would  have  a  materially  adverse  effect  on  (A)  the  business,
operations,  prospects,  assets or financial or other  condition of Guarantor or
(B) the Guarantor's ability to pay or perform the Obligations in accordance with
the terms hereof.

                  3.2. Corporate Power; Authorization;  Enforceable Obligations.
The  execution,  delivery  and  performance  of  this  Guaranty  and  all  other
instruments  and documents to be delivered by Guarantor  hereunder and under the
Purchase  Agreement  are within  Guarantor's  corporate  powers,  have been duly
authorized by all necessary or proper corporate action, including the consent of
stockholders  where  required,  are not in  contravention  of any  provision  of
Guarantor's  articles  of  incorporation  or  by-laws  (or other  organizational
documents),  will not violate any law or  regulation,  or any order or decree of
any court or governmental  instrumentality,  will not conflict with or result in
the breach of, or constitute a default under, any indenture,  mortgage,  deed of
trust, lease,  agreement or other instrument to which Guarantor is a party or by
which Guarantor or any of its property is bound, will not result in the creation
or imposition of any lien upon any of the property of Guarantor, and the same do
not require the consent or approval of any governmental body, agency,  authority
or any other Person  except those already  obtained.  At or prior to the Closing
Date, this Guaranty and each of the Ancillary Agreements to which Guarantor is a
party  shall have been duly  executed  and  delivered  for the  benefit of or on
behalf of Guarantor,  and each shall then constitute a legal,  valid and binding
obligation of Guarantor,  enforceable  against  Guarantor in accordance with its
terms,  subject  to  the  effect  of  bankruptcy,  insolvency,   reorganization,
receivership,  moratorium  and other  similar  laws  affecting  the  rights  and
remedies of creditors  generally and, with respect to the enforceability of this
Guaranty,  by general principles of equity,  including  principles of commercial
reasonableness,  good faith and fair dealing  (regardless of whether enforcement
is sought in a proceeding at law or in equity).



                                        8

<PAGE>



                  3.3. No Material  Adverse  Change.  Since  December  31, 1996,
there has been no material adverse change in the business,  financial condition,
results of operations or liabilities of Guarantor.

                  4.  Covenants.  Guarantor hereby covenants and agrees that:

                  4.1.   Guarantor  will  not  take  any  action,   directly  or
indirectly,  to  authorize  or permit  any  amendment,  alteration  or change to
Borrower's   articles  of  organization  or  operating   agreement  (other  than
amendments  permitted under the Note),  the Keep Well, the Keep Well Guaranty or
the Loan Guaranty or permit Borrower to repeal its articles of organization.

                  4.2. Guarantor  covenants and agrees that it will not take any
action,  directly or indirectly,  to authorize or permit Borrower to take any of
the actions set forth on Annex A attached hereto;  provided,  however, that with
respect to all prohibited actions included on Annex A attached hereto, Guarantor
shall have no obligation under this Section 4.2 to provide any funds to Borrower
which  Borrower  may require in order to avoid or cure any  violation  or breach
thereof;  provided,  further  that the failure of Guarantor to change or replace
the management, directors or Persons holding similar offices of TASL or Borrower
will not be deemed, in and of itself, to constitute Guarantor's authorization or
permission of actions taken by such management, directors or Persons which cause
or result in Borrower taking any of the prohibited actions set forth on Annex A.

                  4.3.  Guarantor  shall  deliver  to Lender  (i) within 60 days
after the end of each of the first three fiscal quarters of Guarantor, a copy of
the unaudited  balance  sheet of Guarantor as of the end of such fiscal  quarter
and an unaudited  statement of income and cash flow of Guarantor for such fiscal
quarter,  all  prepared  in  accordance  with GAAP  (subject  to normal year end
adjustment),  accompanied by a certification  of the chief executive  officer or
chief  financial  officer of Guarantor  that all such  financial  statements are
complete  and correct and  present  fairly,  all in  accordance  with GAAP,  the
financial  position,  the results of  operations  and the  changes in  financial
position  of  Guarantor  as at the end of such  quarter  and for the period then
ended and (ii) within 120 days after the end of each fiscal year of Guarantor, a
copy of the audited balance sheet of Guarantor as of the end of such fiscal year
and an audited  statement of income and cash flow of  Guarantor  for such fiscal
year, all prepared in accordance  with GAAP,  accompanied by (x) a certification
of the chief executive  officer or chief financial officer of Guarantor that (1)
all such  financial  statements  are complete and correct and present  fairly in
accordance with GAAP the financial  position,  the results of operations and the
changes in  financial  position of  Guarantor as at the end of such year and for



                                        9

<PAGE>



the period then ended and (2) there have been no  amendments,  modifications  or
changes to Borrower's articles of organization or operating agreement other than
those which are  permitted pursuant the  Note hereof and(y) an auditor's  report
unqualified  as to the  scope of the  audit  and as to  Guarantor  being a going
concern,  from KPMG Peat Marwick LLP, or any other firm of independent certified
public  accountants of recognized  national  standing  selected by Guarantor and
acceptable  to  Lender  together  with a  certification  from such firm that the
Economic  Interests held by all Triton Members in Borrower as of the end of such
fiscal year are, in the aggregate,  at least fifty percent (50%) of the Economic
Interests of Borrower.

                  4.4.  At  all  times,   Triton  Members  shall  hold,  in  the
aggregate, at least fifty percent (50%) of the Economic Interests of Borrower.

                  5.  PERMITTED  ASSIGNMENT BY LENDER.  Lender may freely assign
its rights and delegate its duties under this Guaranty,  but no such  assignment
or delegation  shall  increase or diminish  Guarantor's  obligations  hereunder.
Lender shall give Guarantor  prompt notice of such  assignment or delegation and
agrees to use its best  efforts to give such notice at least three (3)  Business
Days prior to such assignment or delegation,  but the consent of Guarantor shall
not be required for any such  assignment or delegation  and failure to give such
notice shall not affect the validity or enforceability of any such assignment or
delegation or this Guaranty or subject Lender to any liability.

                  6.  FURTHER  ASSURANCES.  Guarantor  agrees,  upon the written
request of the  Beneficiaries  or either of them, to execute and deliver to such
Beneficiary,  from  time  to  time,  any  additional  instruments  or  documents
reasonably  considered  necessary by such  Beneficiary to cause this Guaranty to
be, become or remain valid and effective in accordance with its terms.

                  7. PAYMENTS FREE AND CLEAR OF TAXES. All payments  required to
be made by Guarantor hereunder shall be made to the Beneficiaries free and clear
of,  and  without   deduction  for,  any  and  all  present  and  future  taxes,
withholdings,   levies,   duties,  and  other  governmental  charges  ("Taxes"),
excluding  such income and franchise  taxes thereof which would  otherwise  have
been payable (i) by Borrower if TASL had paid the  Obligations  to Borrower,  or
(ii) by Lender if Borrower or TASL, as the case may be, had paid the Obligations
to Lender,  in accordance  with the terms of the Keep Well.  Upon request by the
Beneficiaries  or either of them,  Guarantor shall furnish to such Beneficiary a
receipt for any Taxes paid by  Guarantor  pursuant  to this  Section 6 or, if no
Taxes are payable with respect to any payments  required to be made by Guarantor
hereunder,  either a certificate  from each  appropriate  taxing authority or an
opinion of counsel  acceptable to such Beneficiary,  in either case stating that



                                       10

<PAGE>



such  payment is exempt  from or not  subject  to Taxes.  If Taxes are paid by a
Beneficiary in the good faith belief that such taxes are owing,  Guarantor will,
upon  demand  of such  Beneficiary,  and  whether  or not  such  Taxes  shall be
correctly or legally  asserted,  indemnify such  Beneficiary  for such payments,
together with any interest,  penalties and expenses in connection therewith plus
interest  thereon  at  the  lesser  of  10% or the  maximum  lawful  rate  under
applicable law. Such Beneficiary  shall  thereafter  cooperate in a commercially
reasonable manner with Guarantor in seeking any refunds of such Taxes, interest,
penalties and expenses,  which refunds and any interest thereon shall be paid by
such  Beneficiary to Guarantor  within five (5) business days of receipt by such
Beneficiary;  provided,  that in no event shall any  Beneficiary  be required to
expend its own funds in seeking any such refund and provided,  further, that any
expenses incurred in connection therewith shall be paid by Guarantor.

                  8. MISCELLANEOUS.

                  8.1. Entire  Agreement;  Amendments.  This Guaranty,  together
with the Purchase  Agreement,  the Note,  the Keep Well and the other  Ancillary
Documents,  constitutes the entire agreement between the parties with respect to
the subject  matter hereof and  supersedes  all prior  agreements  relating to a
guaranty of payment and performance of the Obligations and may not be amended or
supplemented   except  by  a  writing  signed  by  Guarantor  and  each  of  the
Beneficiaries.

                  8.2.   Headings.   The  headings  in  this  Guaranty  are  for
convenience  of  reference  only  and are  not  part  of the  substance  of this
Guaranty.

                  8.3.  Severability.  In the event  that any one or more of the
provisions contained in this Guaranty shall be determined to be invalid, illegal
or  unenforceable  in any respect for any reason,  the  validity,  legality  and
enforceability  of any such  provision or  provisions in every other respect and
the remaining provisions of this Guaranty shall not be in any way impaired.

                  8.4.  Notices.  All notices,  demands,  declarations and other
communications  required  by this  Guaranty  shall be in  writing  and  shall be
effective  (i) if  given  by  facsimile,  when  transmitted,  (ii) if  given  by
registered or certified mail, three (3) Business Days after being deposited with
the U.S. Postal Service,  (iii) if given by courier,  when received,  or (iv) if
personally delivered, when so delivered, addressed:

                  (a)  If to Lender at:



                                       11

<PAGE>



                           c/o Polaris Investment Management Corporation
                           201 Mission Street, 27th Floor
                           San Francisco, CA 94105
                           Attention: President
                           Telecopy Number:  (415) 284-7460

                  With a copy to:

                           c/o Polaris Investment Management Corporation
                           201 High Ridge Road
                           Stamford, Connecticut  06927-4900
                           Attention:  Portfolio Management
                           Telecopy Number: (203) 357-4585

or to such other address as Lender may from time to time designate in writing to
Borrower and Guarantor.

                  (b) If to Borrower, at:

                           Triton Aviation Services III LLC
                           55 Green Street, Suite 500
                           San Francisco, CA 94111
                           Attention: President
                           Telecopy Number:  (415) 398-9184

or to such other address as Borrower may from time to time  designate in writing
to Lender and Guarantor.

                  (c)      If to Guarantor, at:

                           Triton Investments Limited
                           c/o Triton Container International Inc.
                           55 Green Street, Suite 500
                           San Francisco, CA 94111
                           Attention: President
                           Telecopy Number:  (415) 398-9184



                                       12

<PAGE>



or to such other address as Guarantor may from time to time designate in writing
to Lender  and  Borrower.  The giving of any notice  required  hereunder  may be
waived in writing by the party entitled to receive such notice.

                  8.5.  Binding  Effect.  This Guaranty shall bind Guarantor and
shall  inure to the  benefit  of each of the  Beneficiaries  and its  respective
successors and assigns. Guarantor may not assign this Guaranty.

                  8.6. Non-Waiver. The failure of the Beneficiaries or either of
them to enforce any right or remedy  hereunder,  or promptly to enforce any such
right or remedy,  shall not  constitute a waiver  thereof,  nor give rise to any
estoppel  against such  Beneficiary,  nor excuse  Guarantor from its Obligations
hereunder.  Any waiver of any such right or remedy by a  Beneficiary  must be in
writing and signed by such Beneficiary.

                  8.7.  Termination.  This Guaranty shall terminate and be of no
further  force  or  effect  at such  time as the  Obligations  shall be paid and
performed in full. Upon payment and performance in full of the Obligations,  the
Beneficiaries  shall  deliver to  Guarantor  such  documents  as  Guarantor  may
reasonably request to evidence such termination.

                  8.8.  Governing  Law.  The  terms  of this  Guaranty  shall be
governed by, and shall be construed and enforced in accordance with, the laws of
the State of California  (exclusive of any rules as to conflict of laws) and the
laws of the  United  States  applicable  therein.  Guarantor  hereby  submits to
personal  jurisdiction and waives any objection as to venue in the County of San
Francisco,  State of  California.  Service of process on Guarantor in any action
arising out of or  relating to this  Guaranty  shall be  effective  if mailed to
Guarantor in accordance  with Section 7.4 hereof.  Nothing herein shall preclude
the  Beneficiaries  from bringing suit or taking other legal action in any other
jurisdiction.

                  8.9. Counterparts. This Guaranty may be executed in any number
of  counterparts  which  shall  individually  and  collectively  constitute  one
agreement.



                                       13

<PAGE>



                  IN WITNESS WHEREOF,  Guarantor has executed and delivered this
Guaranty as of the date first above written.


                                                    TRITON INVESTMENTS LIMITED



                                                    By: /S/ STEVEN C. WIGHT
                                                        ------------------------
                                                        Name:  STEVEN C. WIGHT
                                                        Title: PRESIDENT



Accepted and acknowledged by:

POLARIS AIRCRAFT INVESTMENT FUND III

By:  Polaris Investment Management
     Corporation, General Partner


By:  /S/ MARC A. MEICHES
     --------------------------
     Name:  MARC A. MEICHES
     Title: VICE PRESIDENT


TRITON AVIATION SERVICES III LLC

By:  Triton Aviation Services Limited,
     its Manager


By:  /S/ JOHN E. FLYNN
     --------------------------
     Name:  JOHN E. FLYNN
     Title: PRESIDENT



                                       14

<PAGE>



                                                                         Annex A


Borrower will not:

                  (a)  engage  in  any  business  or  activity  other  than  (i)
     acquiring,  holding,  maintaining,   improving,  refurbishing,   modifying,
     selling,  leasing,  transferring  and  disposing  of all  right,  title and
     interest in those certain trust estates,  subject of the Trust  Agreements,
     and the related  Aircraft  and (ii) any  activity or exercise of any powers
     permitted  to limited  liability  companies  under the laws of the State of
     California  that are incident,  necessary and appropriate to accomplish the
     activities specified in clause (i) of this subsection (a);

                  (b) liquidate or take any affirmative  action to dissolve,  in
     whole or in part;

                  (c)  acquire  any  interest  in any  aircraft  other  than the
     Aircraft;

                  (d)  consolidate  or merge  with or into any  other  entity or
     convey or transfer its properties and assets  substantially  as an entirety
     to any entity, except as permitted under the Note;

                  (e)  engage in  transactions  with  Affiliates  other than any
     agreement  or   transaction   entered  into  pursuant  to  the   reasonable
     requirements of Borrower's  ordinary course of business and upon terms that
     are  no  less  favorable  to  Borrower  than  Borrower  could  obtain  in a
     comparable  arm's-length  transaction  with any  person  or  entity  not an
     Affiliate of Borrower;

                  (f) declare any  dividend or other  distribution  or incur any
     liability in respect thereof,  with respect to the membership interests (or
     any other  equity  interest)  of  Borrower,  other than as permitted by the
     Note;

                  (g) employ any employees;

                  (h)  institute  proceedings  to  be  adjudicated  bankrupt  or
     insolvent;

                  (i) consent to the  institution  of  bankruptcy  or insolvency
     proceedings against it;



                                       15

<PAGE>



                  (j) file a petition seeking, or consent to,  reorganization or
     relief under any applicable federal or state law relating to bankruptcy;

                  (k)  seek  or  consent  to  the  appointment  of  a  receiver,
     liquidator, conservator, assignee, trustee, sequestrator,  custodian or any
     other similar official of Borrower or a substantial part of its properties;

                  (l) make any assignment for the benefit of creditors;

                  (m) admit in writing its inability to pay its debts  generally
     as they become due;

                  (n)  otherwise  seek  relief  under any laws  relating  to the
     relief from debts or the protection of debtors generally;

                  (o)  guarantee or become  obligated for the debts of any other
     entity or person;

                  (p) hold out its  credit as being  available  to  satisfy  the
     obligations of any other person or entity;

                  (q) acquire the obligations or securities of its affiliates or
     owners other than Permitted SPV Investments;

                  (r) make  loans to any  other  person or entity or buy or hold
     evidence of  indebtedness  issued by any other person or entity (except for
     Permitted Investments);

                  (s) create,  incur, assume or permit to exist any Indebtedness
     except  Indebtedness  permitted  to be  incurred  by  Borrower  pursuant to
     Section 4.2 of the Note;

                  (t) except for Permitted  Encumbrances,  pledge its assets for
     the benefit of any other  person or entity or create any Lien on any of its
     properties or assets;

                  (u)  permit  any  Lien to exist  on any of its  properties  or
     assets except for (i)  involuntary  or inchoate  Liens that are incurred by



                                       16

<PAGE>



     Borrower  in the  ordinary  course  of  Borrower's  business  conducted  in
     compliance  with the  provisions of subsection (a) hereof or (ii) Permitted
     Encumbrances;

                  (v) take any  action in  furtherance  of any of the  preceding
     actions.



                                       17



                           GUARANTY (SPV INDEBTEDNESS)


                  GUARANTY,  dated as of April 1,  1997,  of TRITON  INVESTMENTS
LIMITED,  a  Bermuda  corporation  ("Guarantor"),  in favor of  TRITON  AVIATION
SERVICES III LLC, a California limited liability company ("Lender").

                              W I T N E S S E T H:

                  WHEREAS,   Triton  Aviation   Services   Limited,   a  Bermuda
corporation and a majority-owned and controlled subsidiary of Guarantor ("TASL")
is the record and  beneficial  owner of 99% of the member  interests  in each of
Lender and Triton Aviation  Services II LLC, Triton Aviation Services IV LLC and
Triton  Aviation  Services V LLC, each a California  limited  liability  company
(each a "Triton LLC"; collectively, the "Triton LLC's"); and

                  WHEREAS, Guarantor, as the majority owner of TASL, will derive
substantial  direct and indirect  economic benefit from the making of loans from
time to time by Lender to the Triton LLC's ("SPV Loans"); and

                  WHEREAS,  in connection with the making of SPV Loans from time
to time to the Triton  LLC's,  Lender is  requiring  that  Guarantor  shall have
executed and delivered this Guaranty;

                  NOW,  THEREFORE,  in  consideration  of the  premises  and the
covenants hereinafter  contained,  and to induce Lender to make SPV Loans, it is
agreed as follows:

                  1.  DEFINITIONS.  The following  shall have (unless  otherwise
provided  elsewhere in this  Guaranty) the following  respective  meanings (such
meanings  being  equally  applicable to both the singular and plural form of the
terms defined):

         "Letter of  Credit"  means an  irrevocable  direct pay letter of credit
issued by a bank (i) whose long term debt is rated "AA" or better by  Thompson's
Bankwatch  or (ii)  rated "AA" or better by  Standard & Poor's in the  Financial
Institutions  Rating  Service  and  that is  payable  upon  presentation  by the
beneficiary of such Letter of Credit of a sight draft (it being understood,  but
without any  impairment of the issuing bank's  obligations  under such Letter of
Credit, that the beneficiary shall not present such sight draft unless (x) there
has been a default under the promissory note secured by such Letter of Credit or





<PAGE>







(y) the Letter of Credit would expire within 45 days of such presentation and an
extension of such  expiration date shall not have been granted nor an acceptable
replacement Letter of Credit been provided).

         "Obligations"  means all obligations of any kind or nature,  present or
future,  owed by any of the  Triton  LLC's to  Lender  with  respect  to any SPV
Indebtedness incurred by such Triton LLC.

         "SPV  Indebtedness"  means any and all monies  borrowed by a Triton LLC
from Lender pursuant to an SPV Loan.

         References to this "Guaranty"  shall mean this Guaranty,  including all
amendments,  modifications  and supplements and any exhibits or schedules to any
of the foregoing,  and shall refer to this Guaranty as the same may be in effect
at the time such reference becomes operative.

                  2.  THE GUARANTY.  The guaranty of Guarantor hereunder is as
follows:

                  2.1. Guaranty of Obligations of Triton LLC's. Guarantor hereby
unconditionally guarantees to Lender, and its respective successors,  endorsees,
transferees  and assigns,  the prompt payment  (whether at stated  maturity,  by
acceleration or otherwise) and performance of the Obligations.  Guarantor agrees
that  this  Guaranty  is a  guaranty  of  payment  and  performance  and  not of
collection,  and that its  obligations  under this  Guaranty  shall be  primary,
absolute and unconditional, irrespective of, and unaffected by:

                           (a)   the    genuineness,    validity,    regularity,
         enforceability  or any future amendment of, or change in this Guaranty,
         any SPV Indebtedness or any other agreement,  document or instrument to
         which the Triton LLC's, Lender and/or Guarantor is or are or may become
         a party;

                           (b)  the  absence  of  any  action  to  enforce  this
         Guaranty,  any SPV  Indebtedness  or any other  agreement,  document or
         instrument to which the Triton LLC's, Lender and/or Guarantor is or are
         or may become a party,  or the waiver or consent by Lender with respect
         to any of the provisions thereof;

                           (c) the existence,  value or condition of, or failure
         to perfect its lien against,  any security for the  Obligations  or any





                                        2



<PAGE>







         action,  or the  absence of any  action,  by Lender in respect  thereof
         (including, without limitation, the release of any such security); or

                           (d) any other  action or  circumstances  which  might
         otherwise  constitute  a legal or  equitable  discharge or defense of a
         surety or guarantor,

it being agreed by Guarantor that its obligations  under this Guaranty shall not
be discharged  until the payment and  performance,  in full, of the Obligations.
Guarantor  shall be regarded,  and shall be in the same  position,  as principal
debtor with respect to the Obligations. Guarantor expressly waives all rights it
may have now or in the future under any statute,  or at common law, or at law or
in  equity,  or  otherwise,  to  compel  Lender to  proceed  in  respect  of the
Obligations  against any Triton LLC or any other  party or against any  security
for the payment and performance of the Obligations before proceeding against, or
as a condition  to  proceeding  against,  Guarantor.  Guarantor  agrees that any
notice or directive given at any time to Lender which is  inconsistent  with the
waiver in the immediately  preceding  sentence shall be null and void and may be
ignored by Lender,  and,  in  addition,  may not be  pleaded  or  introduced  as
evidence in any  litigation  relating to this  Guaranty for the reason that such
pleading or  introduction  would be at variance  with the written  terms of this
Guaranty,  unless Lender has  specifically  agreed  otherwise in writing.  It is
agreed among Guarantor and Lender that the foregoing  waivers are of the essence
of the transactions  contemplated in connection with the making of SPV Loans and
that, but for this Guaranty and such waivers,  Lender would decline to make such
SPV Loan(s).
                  2.2. Additional  Provisions Relating to SPV Indebtedness.  (a)
Guarantor  hereby  acknowledges  and  agrees  that  it  is a  condition  to  the
incurrence of each SPV Loan that the Triton LLC incurring such SPV  Indebtedness
obtain  a  Letter  of  Credit  in  favor of  Lender  in an  amount  equal to the
outstanding  principal  amount of such SPV Loan plus six months interest thereon
(calculated at the lesser of 10% per annum and the maximum rate under applicable
law) and  Guarantor  hereby  agrees that it will cause such Triton LLC to obtain
and  maintain  in  existence  such  Letter of Credit so long as there is any SPV
Indebtedness outstanding under such SPV Loan.

         (b) Upon the failure of a Triton LLC to pay any amounts  demanded under
any  promissory  note  evidencing  any SPV  Indebtedness,  Guarantor  (i) hereby
waives,  releases  and  disclaims  any  right  of  subrogation,   reimbursement,
contribution or other similar rights against the Triton LLC that is the borrower
in respect of such SPV Indebtedness,  (ii) is hereby deemed to release,  forgive
and discharge  such Triton LLC from any obligation of such Triton LLC to pay any
amount to Guarantor in the event that Guarantor is obligated to make any payment
hereunder  or to the  issuer of any  Letter of Credit  with  respect to such SPV





                                        3



<PAGE>







Indebtedness;  provided, however that any such payment by Guarantor hereunder or
to  the  issuer  of any  Letter  of  Credit  shall  be  deemed  to be a  capital
contribution by Guarantor to such Triton LLC.

                  2.3.  Demand  by  Lender.  In  addition  to the  terms  of the
Guaranty set forth in Sections 2.1 and 2.2 hereof, and in no manner imposing any
limitation  on such terms,  it is expressly  understood  and agreed that, if the
then outstanding  principal amount of any of the Obligations  (together with all
accrued  interest  thereon) is declared to be immediately due and payable,  then
Guarantor  shall,  upon demand in writing  therefor by Lender to  Guarantor  but
subject  to  Section  2.6(b)  hereof,  pay  to  Lender  the  entire  outstanding
Obligations due and owing to Lender.

                  2.4.  Enforcement  of Guaranty.  In no event shall Lender have
any obligation  (although it is entitled,  at its option) to proceed against any
Triton LLC or any other  Person or any Letter of Credit or any real or  personal
property  pledged to secure the  Obligations  before seeking  satisfaction  from
Guarantor.  Lender may proceed,  prior or subsequent to, or simultaneously with,
the  enforcement of Lender's rights  hereunder,  to exercise any right or remedy
which  it may have  against  any  Letter  of  Credit  or any  property,  real or
personal, as a result of any lien it may have as security for all or any portion
of the Obligations.

                  2.5. Waiver.  In addition to the waivers  contained in Section
2.1 or 2.2 hereof,  Guarantor  waives,  and agrees that it shall not at any time
insist  upon,  plead or in any  manner  whatever  claim or take the  benefit  or
advantage of, any appraisal,  valuation, stay, extension,  marshalling of assets
or redemption laws, or exemption, whether now or at any time hereafter in force,
which may delay, prevent or otherwise affect the performance by Guarantor of its
obligations  under,  or the  enforcement by Lender of, this Guaranty.  Guarantor
hereby waives  diligence,  presentment  and demand  (whether for  non-payment or
protest or of acceptance,  maturity, extension of time, change in nature or form
of the Obligations, acceptance of further security, release of further security,
composition  or  agreement  arrived at as to the amount of, or the terms of, the
Obligations, notice of adverse change in any Triton LLC's financial condition or
any other fact which  might  materially  increase  the risk to  Guarantor)  with
respect to any of the Obligations or all other demands whatsoever and waives the
benefit  of all  provisions  of law which are or might be in  conflict  with the
terms of this Guaranty.  Guarantor  represents,  warrants and agrees that, as of
the date of this Guaranty,  its obligations  under this Guaranty are not subject
to any  offsets  or  defenses  against  Lender  or any  Triton  LLC of any kind.
Guarantor  further agrees that its obligations  under this Guaranty shall not be
subject to any counterclaims,  offsets or defenses against Lender or against any
Triton LLC of any kind which may arise in the future.





                                        4



<PAGE>







                  2.6. Benefit of Guaranty.  (a) Except as provided in paragraph
(b) below,  the provisions of this Guaranty are solely for the benefit of Lender
and its successors, transferees, endorsees and assigns. Nothing herein contained
shall  impair,  as between any Triton LLC and Lender,  the  obligations  of such
Triton  LLC  under  any SPV  Indebtedness.  In the  event all or any part of the
Obligations  are  transferred,  indorsed  or assigned by Lender to any Person or
Persons,  any  reference to "Lender"  herein shall be deemed to refer equally to
such Person or Persons.

                  (b)  Guarantor and Lender agree that this Guaranty is executed
in part to induce  Polaris  Aircraft  Income  Fund  III,  a  California  limited
partnership  ("Polaris"),  to enter into that certain  Purchase,  Assignment and
Assumption  Agreement  dated as of April,  1997 with  Lender  and to accept  the
delivery by Lender of that certain Promissory Note effective as of April 1, 1997
in connection  therewith,  and  accordingly  the provisions of this Guaranty are
hereby   declared  to  be  for  the  benefit  of  Polaris  and  its  successors,
transferees,  endorsees and assigns,  and may be enforced by them. Guarantor and
Lender  further  agree that in the event  Polaris  notifies  Guarantor  that any
amounts  are due and owing to it by  Lender,  then  until  such  notice has been
revoked by Polaris, any payments to be made by Guarantor hereunder shall instead
be made by  Guarantor  directly to Polaris and Polaris  shall apply all payments
received from Guarantor in the same manner as though paid directly by Lender.

                  2.7. Modification of Obligations,  Etc. If Lender shall at any
time or from time to time,  with or  without  the  consent  of,  or  notice  to,
Guarantor:

                           (a)  change or extend the  manner,  place or terms of
         payment of, or renew or alter all or any portion of, the Obligations;

                           (b) take any  action  under or in  respect of any SPV
         Indebtedness  in  the  exercise  of  any  remedy,  power  or  privilege
         contained  therein or available to it at law,  equity or otherwise,  or
         waive  or  refrain  from  exercising  any  such  remedies,   powers  or
         privileges;

                           (c) amend or modify,  in any manner  whatsoever,  any
         document, instrument or agreement with respect to SPV Indebtedness;

                           (d) extend or waive the time for any of  Guarantor's,
         any Triton LLC's or other Person's  performance of, or compliance with,
         any term, covenant or agreement on its part to be performed or observed
         under  any  document,  instrument  or  agreement  with  respect  to SPV





                                        5



<PAGE>






         Indebtedness,  or waive such  performance or compliance or consent to a
         failure of, or departure from, such performance or compliance;

                           (e) take  and hold  security  or  collateral  for the
         payment  of  the  Obligations  guaranteed  hereby  or  sell,  exchange,
         release,  dispose of, or otherwise  deal with,  any  property  pledged,
         mortgaged or conveyed,  or in which Lender has been granted a lien,  to
         secure any indebtedness of Guarantor or any Triton LLC to Lender;

                           (f)  release  anyone  who may be liable in any manner
         for the payment of any amounts  owed by  Guarantor or any Triton LLC to
         Lender;

                           (g)   modify   or   terminate   the   terms   of  any
         intercreditor  or subordination  agreement  pursuant to which claims of
         other creditors of Guarantor or any Triton LLC are  subordinated to the
         claims of Lender and/or

                           (h)  apply  any  sums by  whomever  paid  or  however
         realized to any amounts  owing by Guarantor or any Triton LLC to Lender
         in such manner as Lender shall determine in its discretion;

then Lender  shall not incur any  liability to  Guarantor  pursuant  hereto as a
result  thereof,  and no such action shall impair or release the  obligations of
Guarantor under this Guaranty.

                  2.8.  Reinstatement.  This Guaranty shall remain in full force
and effect and  continue  to be  effective  should any  petition  be filed by or
against any Triton LLC or Guarantor for  liquidation or  reorganization,  should
such Triton LLC or  Guarantor  become  insolvent or make an  assignment  for the
benefit of creditors or should a receiver or trustee be appointed for all or any
significant part of such Triton LLC's or Guarantor's  assets, and shall continue
to be effective or be reinstated, as the case may be, if at any time payment and
performance of the Obligations,  or any part thereof, is, pursuant to applicable
law,  rescinded or reduced in amount,  or must otherwise be restored or returned
by Lender,  whether as a  "voidable  preference",  "fraudulent  conveyance",  or
otherwise,  all as though such payment or performance  had not been made. In the
event that any payment, or any part thereof, is rescinded,  reduced, restored or
returned,  the  Obligations  shall be reinstated and deemed reduced only by such
amount paid and not so rescinded, reduced, restored or returned.






                                        6



<PAGE>







                  2.9.  Waiver of Claims,  Etc. If Lender may, under  applicable
law, proceed to realize its benefits under any SPV Indebtedness, giving Lender a
lien upon any  collateral,  whether owned by the Triton LLC that is the borrower
under  such  SPV  Indebtedness  or by  any  other  Person,  either  by  judicial
foreclosure  or by  non-judicial  sale or  enforcement,  Lender may, at its sole
option,  determine  which  of its  remedies  or  rights  it may  pursue  without
affecting  any of its  rights  and  remedies  under  this  Guaranty.  If, in the
exercise  of any of its rights and  remedies,  Lender  shall  forfeit any of its
rights or remedies, including its right to enter a deficiency judgment against a
Triton  LLC or  any  other  Person,  whether  because  of  any  applicable  laws
pertaining to "election of remedies" or the like,  Guarantor  hereby consents to
such action by Lender and waives any claim based upon such action.  Any election
of remedies  which results in the denial or impairment of the right of Lender to
seek a  deficiency  judgment  against a Triton LLC or any other Person shall not
impair Guarantor's obligation to pay the full amount of the Obligations.  In the
event Lender shall bid at any  foreclosure  or trustee's  sale or at any private
sale permitted by law or the under any SPV  Indebtedness,  Lender may bid all or
less than the amount of the  Obligations  and the amount of such bid need not be
paid by Lender but shall be credited against the Obligations.  The amount of the
successful  bid at any such  sale,  whether  Lender  or any  other  party is the
successful bidder,  shall be conclusively  deemed to be the fair market value of
the  collateral  and the  difference  between such bid amount and the  remaining
balance of the Obligations shall be conclusively  deemed to be the amount of the
Obligations guaranteed under this Guaranty,  notwithstanding that any present or
future  law or court  decision  or ruling may have the  effect of  reducing  the
amount of any deficiency  claim to which Lender might  otherwise be entitled but
for such bidding at any such sale.

                  2.10. Continuing Guaranty. Guarantor agrees that this Guaranty
is a  continuing  guaranty  and shall  remain in full force and effect until the
payment and performance in full of the Obligations.

                  3.  REPRESENTATIONS  AND WARRANTIES.  To induce Lender to make
SPV Loans from time to time,  Guarantor makes the following  representations and
warranties  to Lender,  each and all of which shall  survive the  execution  and
delivery of this Guaranty:

                  3.1. Corporate  Existence;  Compliance with Law. Guarantor (i)
is a corporation duly organized, validly existing and in good standing under the
laws of Bermuda;  (ii) is duly  qualified to do business and is in good standing
under the laws of each jurisdiction  where its ownership or lease of property or
the  conduct  of  its  business   requires   such   qualification   (except  for





                                        7



<PAGE>






jurisdictions  in which such  failure  so to  qualify or to be in good  standing
would not have a  materially  adverse  effect on (A) the  business,  operations,
prospects or financial  condition of Guarantor or (B) Guarantor's ability to pay
the  Obligations in accordance  with the terms hereof);  (iii) has the requisite
corporate power and authority and the legal right to own,  pledge,  mortgage and
operate its  properties,  to lease the property it operates under lease,  and to
conduct its business as now,  heretofore and proposed to be conducted;  (iv) has
all material licenses,  permits,  consents or approvals from or by, and has made
all  material  filings  with,  and  has  given  all  material  notices  to,  all
governmental  authorities having  jurisdiction,  to the extent required for such
ownership,  operation  and conduct;  (v) is in  compliance  with its articles of
incorporation  and  by-laws or other  organizational  documents;  and (vi) is in
compliance with all applicable  provisions of law where the failure to so comply
would  have a  materially  adverse  effect  on  (A)  the  business,  operations,
prospects,  assets or  financial  or other  condition  of  Guarantor  or (B) the
Guarantor's ability to pay the Obligations in accordance with the terms hereof.

                  3.2. Corporate Power; Authorization;  Enforceable Obligations.
The  execution,  delivery  and  performance  of  this  Guaranty  and  all  other
instruments  and documents to be delivered by Guarantor  hereunder and under the
Purchase  Agreement  are within  Guarantor's  corporate  powers,  have been duly
authorized by all necessary or proper corporate action, including the consent of
stockholders  where  required,  are not in  contravention  of any  provision  of
Guarantor's  articles  of  incorporation  or  by-laws  (or other  organizational
documents),  will not violate any law or  regulation,  or any order or decree of
any court or governmental  instrumentality,  will not conflict with or result in
the breach of, or constitute a default under, any indenture,  mortgage,  deed of
trust, lease,  agreement or other instrument to which Guarantor is a party or by
which Guarantor or any of its property is bound, will not result in the creation
or  imposition of any lien upon any of the property of Guarantor and the same do
not require the consent or approval of any governmental body, agency,  authority
or any other Person  except those already  obtained.  At or prior to the closing
date for any SPV  Indebtedness,  this Guaranty shall have been duly executed and
delivered  for  the  benefit  of or on  behalf  of  Guarantor,  and  shall  then
constitute  a legal,  valid and binding  obligation  of  Guarantor,  enforceable
against  Guarantor  in  accordance  with its  terms,  subject  to the  effect of
bankruptcy,  insolvency,  reorganization,  receivership,  moratorium  and  other
similar laws affecting the rights and remedies of creditors  generally and, with
respect to the enforceability of this Guaranty, by general principles of equity,
including principles of commercial  reasonableness,  good faith and fair dealing
(regardless  of  whether  enforcement  is  sought in a  proceeding  at law or in
equity).






                                        8



<PAGE>







                  3.3. No Material  Adverse  Change.  Since  December  31, 1996,
there has been no material adverse change in the business,  financial condition,
results of operations or liabilities of Guarantor.

                  4. NO  ASSIGNMENT.  Neither  Guarantor  nor  Lender may assign
their respective rights or delegate their respective duties under this Guaranty.

                  5. FURTHER  ASSURANCES.  Guarantor   agrees,  upon the written
request of Lender,  to execute  and  deliver to Lender,  from time to time,  any
additional instruments or documents reasonably considered necessary by Lender to
cause this  Guaranty to be,  become or remain valid and  effective in accordance
with its terms.

                  6. PAYMENTS FREE AND CLEAR OF TAXES. All payments  required to
be made by  Guarantor  hereunder  shall be made to Lender free and clear of, and
without  deduction  for,  any and all  present and future  taxes,  withholdings,
levies, duties, and other governmental charges ("Taxes"),  excluding such income
and franchise taxes thereof which would otherwise have been payable by Lender if
the Triton LLC that is the borrower under any SPV Indebtedness,  as the case may
be, had paid the  Obligations to Lender in accordance  with the terms of any SPV
Indebtedness.  Upon  request  by  Lender,  Guarantor  shall  furnish to Lender a
receipt for any Taxes paid by  Guarantor  pursuant  to this  Section 6 or, if no
Taxes are payable with respect to any payments  required to be made by Guarantor
hereunder,  either a certificate  from each  appropriate  taxing authority or an
opinion of  counsel  acceptable  to Lender,  in either  case  stating  that such
payment is exempt from or not  subject to Taxes.  If Taxes are paid by Lender in
the good faith belief that such taxes are owing,  Guarantor will, upon demand of
Lender,  and whether or not such Taxes shall be correctly  or legally  asserted,
indemnify  Lender for such payments,  together with any interest,  penalties and
expenses in connection  therewith plus interest  thereon at the lesser of 10% or
the maximum rate under  applicable law. Lender shall  thereafter  cooperate in a
commercially  reasonable  manner with  Guarantor  in seeking any refunds of such
taxes,  interest,  penalties and expenses which refunds and any interest thereon
shall be paid by Lender to Guarantor within five (5) business days of receipt by
Lender;  provided,  that in no event shall  Lender be required to expend its own
funds in  seeking  any such  refund and  provided,  further,  that any  expenses
incurred in connection therewith shall be paid by Guarantor.

                  7.  MISCELLANEOUS.

                  7.1. Entire  Agreement;  Amendments.  This Guaranty,  together
with any documents, instruments and agreements with respect to SPV Indebtedness,





                                        9



<PAGE>







constitutes the entire agreement between the parties with respect to the subject
matter  hereof and  supersedes  all prior  agreements  relating to a guaranty of
payment  and   performance  of  the  Obligations  and  may  not  be  amended  or
supplemented except by a writing signed by Guarantor, Lender and Polaris.

                  7.2.   Headings.   The  headings  in  this  Guaranty  are  for
convenience  of  reference  only  and are  not  part  of the  substance  of this
Guaranty.

                  7.3.  Severability.  In the event  that any one or more of the
provisions contained in this Guaranty shall be determined to be invalid, illegal
or  unenforceable  in any respect for any reason,  the  validity,  legality  and
enforceability  of any such  provision or  provisions in every other respect and
the remaining provisions of this Guaranty shall not be in any way impaired.

                  7.4.  Notices.  All notices,  demands,  declarations and other
communications  required  by this  Guaranty  shall be in  writing  and  shall be
effective  (i) if  given  by  facsimile,  when  transmitted,  (ii) if  given  by
registered or certified mail, three (3) Business Days after being deposited with
the U.S. Postal Service,  (iii) if given by courier,  when received,  or (iv) if
personally delivered, when so delivered, addressed:

                  (a)  If to Lender at:

                           Triton Aviation Services III LLC
                           55 Green Street, Suite 500
                           San Francisco, CA 94111
                           Attention: President
                           Telecopy Number:  (415) 398-9184


                  With a copy to:

                    Polaris Investment Management Corporation
                           201 High Ridge Road
                           Stamford, Connecticut  06927-4900
                           Attention:
                           Telecopy Number: (203) 357-4585






                                       10



<PAGE>







or to such other address as Lender may from time to time designate in writing to
Guarantor.


                  (b)      If to Guarantor, at:

                           Triton Investments Limited
                           55 Green Street, Suite 500
                           San Francisco, CA 94111
                           Attention: President
                           Telecopy Number:  (415) 398-9184

or to such other address as Guarantor may from time to time designate in writing
to Lender.

                  (c)  If to Polaris at:

                  c/o Polaris Investment Management Corporation
                           201 Mission Street, 27th Floor
                           San Francisco, CA 94105
                           Attention: President
                           Telecopy Number: (415) 284-7460

                  With a copy to:

                  c/o Polaris Investment Management Corporation
                           201 High Ridge Road
                           Stamford, Connecticut  06927-4900
                           Attention:  Portfolio Management
                           Telecopy Number: (203) 357-4585

or to such other  address as Polaris may from time to time  designate in writing
to Lender and Guarantor.

                  7.5.  Binding  Effect.  This Guaranty shall bind Guarantor and
shall inure to the benefit of Lender and its respective  successors and assigns.
Guarantor may not assign this Guaranty.






                                       11



<PAGE>







                  7.6. Non-Waiver. The failure of Lender to enforce any right or
remedy  hereunder,  or promptly  to enforce any such right or remedy,  shall not
constitute a waiver thereof,  nor give rise to any estoppel against Lender,  nor
excuse Guarantor from its Obligations hereunder. Any waiver of any such right or
remedy by Lender must be in writing and signed by Lender.

                  7.7.  Termination.  This Guaranty shall terminate and be of no
further  force  or  effect  at such  time as the  Obligations  shall be paid and
performed in full.  Upon  payment and  performance  in full of the  Obligations,
Lender shall deliver to Guarantor  such  documents as Guarantor  may  reasonably
request to evidence such termination.

                  7.8.  Governing  Law.  The  terms  of this  Guaranty  shall be
governed by, and shall be construed and enforced in accordance with, the laws of
the State of California  (exclusive of any rules as to conflict of laws) and the
laws of the  United  States  applicable  therein.  Guarantor  hereby  submits to
personal  jurisdiction and waives any objection as to venue in the County of San
Francisco,  State of  California.  Service of process on Guarantor in any action
arising out of or  relating to this  Guaranty  shall be  effective  if mailed to
Guarantor in accordance  with Section 7.4 hereof.  Nothing herein shall preclude
Lender  from   bringing   suit  or  taking  other  legal  action  in  any  other
jurisdiction.

                  7.9. Counterparts. This Guaranty may be executed in any number
of  counterparts  which  shall  individually  and  collectively  constitute  one
agreement.





                                       12



<PAGE>








                  IN WITNESS WHEREOF,  Guarantor has executed and delivered this
Guaranty as of the date first above written.


                                           TRITON INVESTMENTS LIMITED



                                           By: /S/ STEVEN C. WIGHT
                                              ---------------------
                                              Name:  STEVEN C. WIGHT
                                              Title: EXECUTIVE VICE PRESIDENT



Accepted and acknowledged by:

TRITON AVIATION SERVICES III LLC

By:      Triton Aviation Services Limited,
         its Manager



By: /S/ JOHN E. FLYNN
   -----------------------------
   Name:  JOHN E. FLYNN
   Title: PRESIDENT





                                       13



<PAGE>







Solely in its capacity as a
third party beneficiary,

POLARIS AIRCRAFT INCOME FUND III


By:      Polaris Investment Management Corporation,
         General Partner



By: /S/ MARC A. MEICHES
   -----------------------------
   Name:  MARC A. MEICHES
   Title: VICE PRESIDENT






                                       14





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