MESA AIR GROUP INC
10-Q/A, 1995-11-01
AIR TRANSPORTATION, SCHEDULED
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                 FORM 10-Q/A
                                      
               QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D)
                      OF SECURITIES EXCHANGE ACT OF 1934



For the quarter ended  March 31, 1995                          Commission File
                                                               Number 0-15495

                             MESA AIR GROUP,  INC.
- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)


         New Mexico                                           85-0302351
- -------------------------------                           -------------------
(State or other jurisdiction of                            (I.R.S. Employer
 incorporation or organization)                           Identification No.)


2325 East 30th Street, Farmington, New Mexico                    87401
- ---------------------------------------------                 ----------
  (Address of principal executive offices)                    (Zip Code)



Registrant's telephone number, including area code:          (505) 327-0271
                                                             --------------

Indicate by check mark whether the Registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
Registrant was required to file such reports) and (2) has been subject to such
filing requirements for the past 90 days.

                                Yes  X    No
                                    ---      ---

On July 7, 1995, the Registrant had outstanding 32,859,261 shares of Common
Stock.



                                      -1-
<PAGE>   2

  Item 6.        Exhibits and Reports on Form 8-K

                 Exhibit 10.79  -      Bombardier Purchase Agreement 
                                       B95-7701-PA-299 between Bombardier, Inc. 
                                       and Mesa Airlines, Inc. This Exhibit is
                                       subject to a confidential treatment
                                       request and certain confidential 
                                       portions have been omitted as 
                                       indicated by the bracketed language
                                       [CONFIDENTIAL PORTION DELETED] and 
                                       filed separatly with the SEC.
                                       
                                       



                                     -2-

<PAGE>   3
                                   SIGNATURES

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

                                                       Mesa Air Group, Inc.
                                                       Registrant



Date:  11/1/95                          /s/ W. Stephen Jackson
                                        --------------------------------------
                                        W. Stephen Jackson
                                        Chief Financial Officer, Treasurer and
                                        Vice President of Finance
                                        (Principal Accounting Officer)




                                     -3-

<PAGE>   4
                                EXHIBIT INDEX
                                MESA AIR GROUP
                         COMMISSION FILE NO. 0-15495
                                 FORM 10-Q/A
                     FOR THE QUARTER ENDED MARCH 31, 1995



NO.                    DESCRIPTION
- ---                    -----------
10.79                  Bombardier Purchase Agreement B95-7701-PA-299 between
                       Bombardier, Inc. and Mesa Airlines, Inc. This exhibit 
                       is subject to a confidential treatment request and 
                       certain confidential portions have been omitted as 
                       indicated by the bracketed language [CONFIDENTIAL 
                       PORTION DELETED] and filed separatly with the SEC




<PAGE>   1
                       "CONFIDENTIAL TREATMENT REQUESTED"

                                REDACTED VERSION
<PAGE>   2

     The following mark [CONFIDENTIAL PORTION DELETED] as it appears throughout
the Agreement indicates a redaction of information for which the
registrant has requested confidential treatment. This confidential portion has
been separately filed with the Securites and Exchange Commission.

<PAGE>   3


            ========================================================
                      BOMBARDIER REGIONAL AIRCRAFT DIVISION

                               PURCHASE AGREEMENT

                                 B95-7701-PA-299

                                     BETWEEN

                                 BOMBARDIER INC.

                                       AND

                               MESA AIRLINES, INC.

                           Relating to the Purchase of
                   Twenty-five (25) de Havilland DHC-8 aircraft
            ========================================================

<PAGE>   4
                                TABLE OF CONTENTS

        ARTICLE
        -------

          1         INTERPRETATION
          2         SUBJECT MATTER OF SALE
          3         CUSTOMER SUPPORT SERVICES AND WARRANTY
          4         PRICE
          5         PAYMENT
          6         DELIVERY PROGRAM
          7         BUYER INFORMATION
          8         CERTIFICATION FOR EXPORT
          9         ACCEPTANCE PROCEDURE
         10         TITLE AND RISK
         11         CHANGES
         12         BUYER'S REPRESENTATIVES AT MANUFACTURE SITE
         13         EXCUSABLE DELAY
         14         NON-EXCUSABLE DELAY
         15         LOSS OR DAMAGE
         16         TERMINATION
         17         NOTICES
         18         INDEMNITY AGAINST PATENT INFRINGEMENT
         19         LIMITATION OF LIABILITY
         20         ASSIGNMENT
         21         SUCCESSORS
         22         APPLICABLE LAWS
         23         CONFIDENTIAL NATURE OF AGREEMENT
         24         AGREEMENT

      APPENDIX
      --------
        I          ECONOMIC ADJUSTMENT FORMULA
        II         DELIVERY SCHEDULE
        III        SPECIFICATION
        IV         BUYER SELECTED OPTIONAL FEATURES
        V          ESTIMATED AIRCRAFT DELIVERY PRICES
  
      EXHIBIT
      -------
        I          CERTIFICATE OF ACCEPTANCE
        II         BILL OF SALE
        III        CERTIFICATE OF RECEIPT OF AIRCRAFT
        IV         CHANGE ORDER


<PAGE>   5

This Agreement is made on the 24th day of March, 1995.

BY AND BETWEEN:                BOMBARDIER INC., a Canadian Corporation
                               represented by its BOMBARDIER REGIONAL AIRCRAFT
                               DIVISION (BRAD) having an office at Garratt
                               Boulevard, Downsview, Ontario, Canada.

                               Unless the context requires otherwise, references
                               made herein to BRAD herein also include de
                               Havilland Inc. and its subsidiaries and Canadair
                               Division,

                               (collectively "BRAD")

AND:                           MESA AIRLINES, INC.
                               2325 East 30th
                               Farmington, New Mexico
                               U.S.A. 87401

                               ("Buyer")

WHEREAS                        de Havilland Inc., an affiliate of BRAD, is
                               engaged in the manufacture of the Dash-8 aircraft
                               products; and

                               BRAD has been created for the purpose of
                               providing marketing, sales and customer support
                               services for the de Havilland Dash-8 aircraft and
                               related products;

WHEREAS                        Buyer desires to purchase twenty-five (25)
                               Aircraft, (as later defined), and related data,
                               documents, and services according to this
                               Agreement, (as later defined), and BRAD desires
                               to arrange he sale of such Aircraft, data,
                               documents and services to Buyer,

NOW THEREFORE, in consideration of the mutual covenants herein contained, Buyer
and BRAD agree as follows:


<PAGE>   6







ARTICLE 1.                INTERPRETATION

1.1       The recitals above have been inserted for convenience only and do not
          form part of the Agreement.

1.2       The headings of the Articles of this Agreement are included for
          convenience only and shall not be used in the construction and
          interpretation of this Agreement.

1.3       In this Agreement, unless otherwise expressly provided, the singular
          includes the plural and vice-versa.

1.4       In this Agreement the following expressions shall, unless otherwise
          expressly provided, mean:

          a.      "Acceptance Period" shall have the meaning attributed to it in
                  Article 9.3;

          b.      "Acceptance Date" shall have the meaning attributed to it in
                  Article 9.7.(a);

          c.      "Agreement" means this Agreement, including its Exhibits,
                  Annexes, Appendices and Letter Agreements, if any, attached
                  hereto (each of which is incorporated in the Agreement by this
                  reference), as they may be amended pursuant to the provisions
                  of the Agreement;

          d.      "Aircraft" shall have the meaning attributed to it in Article
                  2.1;

          e.      "Aircraft Purchase Price" shall have the meaning attributed to
                  it in Article 4.2;

          f.      "BFE" shall have the meaning attributed to it in Article 11.1;

          g.      "Delivery Date" shall have the meaning attributed to it in
                  Article 9.7.(c);

          h.      "DOT" shall have the meaning attributed to it in Article 8.1;

          i.      "Excusable Delay" shall have the meaning attributed to it in
                  Article 13.1;

          j.      "FAA" shall have the meaning attributed to it in Article 8.1;

          k.      "Notice" shall have the meaning attributed to it in Article
                  17.1;

          l.      "Permitted Change" shall have the meaning attributed to it in
                  Article 11.2;

<PAGE>   7

          m.      "Readiness Date" shall have the meaning attributed to it in
                  Article 9.1;

          n.      "Regulatory Change" shall have the meaning attributed to it in
                  Article 8.4;

          o.      "Specification" shall have the meaning attributed to it in
                  Article 2.1; and

          p.      "Taxes" shall have the meaning attributed to it in Article 
                  4.3.

1.5      All dollar amounts in this Agreement are in United States Dollars.


<PAGE>   8


ARTICLE 2 - SUBJECT MATTER OF SALE

2.1      Subject to the provisions of this Agreement, BRAD will sell and Buyer
         will purchase twenty-five (25) de Havilland Dash-8 aircraft
         manufactured pursuant to specification no. DS8-200, dated February
         1994, as that specification may be modified from time to time in
         accordance with this Agreement (the "Specification"), as supplemented
         by the Buyer selected optional features ("Buyer Selected Optional
         Features") set forth in Appendix IV hereto (collectively the
         "Aircraft). The Specification is incorporated by reference as Appendix
         III hereto.



<PAGE>   9

ARTICLE 3 - CUSTOMER SUPPORT SERVICES AND WARRANTY

(a)      BRAD shall provide to Buyer the Customer Support Services pursuant to
         the provisions of letter agreement MJR-009.

(b)      BRAD shall provide to Buyer the warranty and the service life policy
         described in letter agreement MJR-009 which shall be the exclusive
         warranty applicable to the Aircraft.

(c)      Unless expressly stated otherwise, the services referred to in (a) and
         (b) above are incidental to the sale of the Aircraft and are included
         in the Aircraft Purchase Price.


<PAGE>   10


ARTICLE 4 - PRICE

4.1.1    The base price for each of the Aircraft (excluding Buyer Selected
         Optional Features), flyaway BRAD's facilities in Downsview, Ontario, is
                         [CONFIDENTIAL PORTION DELETED]

                                                 .

4.1.2    The base price of the Buyer Selected Optional Features is
                         [CONFIDENTIAL PORTION DELETED]
                                           .

4.2.1    The price of the Aircraft (the "Aircraft Purchase Price") shall be

                         [CONFIDENTIAL PORTION DELETED]
                                                    , adjusted to the Delivery
         Date to reflect economic fluctuations during the period from February
         1, 1995 to the Delivery Date of each Aircraft. Such adjustments shall
         be based on the formula attached as Appendix I.

4.2.2    As the Aircraft Purchase Price cannot be established at this time due
         to the effect of price escalation, an estimated delivery price has been
         established for the Aircraft pursuant to Appendix I (the "Estimated
         Delivery Price"). However, these prices are not to exceed the prices
         set out in the such Appendix I which are based on a maximum
           [CONFIDENTIAL PORTION DELETED] per year.

4.3      The Aircraft Purchase Price does not include any taxes, fees or duties
         including, but not limited to, sales, use, value added (including the
         Canadian Goods and Services Tax), personal property, gross receipts,
         franchise, excise taxes, assessments or duties, (hereafter "Taxes")
         which are or may be imposed by law upon BRAD, any affiliate of BRAD,
         Buyer or the Aircraft whether or not there is an obligation for BRAD to
         collect same from Buyer, by any taxing authority or jurisdiction
         occasioned by, relating to or as a result of the sale, lease, delivery,
         storage, use or other consumption of any Aircraft, BFE or any other
         matter, good or service provided under or in connection with this
         Agreement. According to current legislation, Canadian taxes, duties and
         Goods and Services Tax are not applicable to aircraft sold and
         immediately exported from Canada.

4.4      If any Taxes (other than Canadian income taxes charged on the income of
         BRAD) are imposed upon Buyer or become due or are to be collected from
         BRAD by any taxing authority, that may result from execution of this
         Agreement,
<PAGE>   11

                         [CONFIDENTIAL PORTION DELETED]
         , as the case may be, [CONFIDENTIAL PORTION DELETED]. However,
                         [CONFIDENTIAL PORTION DELETED]


4.5      Upon BRAD's request, Buyer shall execute and deliver to BRAD any
         documents that BRAD deems necessary or desirable in connection with any
         exemption from or reduction of or the contestation of or the defence
         against any imposition of Taxes.


<PAGE>   12

ARTICLE 5 - PAYMENT

5.1      Buyer shall make payment or cause payment to be made for each Aircraft
         based on the provisions set forth in letter Agreement B95-7701-MJR-004
         which forms part of the present Agreement.

5.2      Subject to the provisions of Article 9.9 hereof, should Buyer fail to
         make any of the aforementioned payments on or before the stipulated
         date and Buyer does not correct the default

                         [CONFIDENTIAL PORTION DELETED]

            .  BRAD shall have the option (but not the obligation) [CONFIDENTIAL
         PORTION DELETED] should Buyer make arrangements satisfactory to BRAD
         [CONFIDENTIAL PORTION DELETED]

                                            .

5.3      Buyer shall pay BRAD         [CONFIDENTIAL PORTION DELETED]
                              the day prior to receipt of payment, [CONFIDENTIAL
          PORTION DELETED]

                                                             .

5.4      Buyer shall make all payments due under this Agreement in immediately
         available United States Dollars by deposit on or before the due date to
         BRAD's account at:

                  Morgan Guarantee Trust Co.
                  New York, New York, United States of America
                  ABA # 021000238

                  To pay:
                  Canadian Imperial Bank of Commerce
                  Head Office
                  Toronto, Ontario, Canada
                  Account # 64101470
<PAGE>   13

                  For the credit of the beneficiary bank:
                  Canadian Imperial Bank of Commerce
                  Main Branch Transit # 00002
                  Toronto, Ontario, Canada
                  Account # 64101470

                  For the further credit of the beneficiary:
                  de Havilland Inc.
                  Account # 03-51717

5.5      All other amounts due with respect to each Aircraft shall be paid on or
         prior to the Delivery Date of the respective Aircraft.

5.6      All payments provided for under this Agreement shall be made so as to
         be received in [CONFIDENTIAL PORTION DELETED] by BRAD on the dates
         stipulated herein.

5.7      BRAD shall remain the exclusive owner of the Aircraft, free and clear
         of all rights, liens, charges or encumbrances, until such time as all
         payments referred to in this Article 5 have been made.


<PAGE>   14

ARTICLE 6 - DELIVERY PROGRAM

6.1      The Aircraft shall be offered for acceptance to Buyer at BRAD's
         facility in Toronto, Ontario during the months set forth in Appendix II
         attached hereto (the "Scheduled Delivery Dates").


<PAGE>   15

ARTICLE 7 - BUYER INFORMATION

7.1      During the manufacture of the Aircraft, Buyer shall provide to BRAD on
         or before the date required by BRAD, all information as BRAD may
         reasonably request to manufacture the Aircraft including, without
         limitation, the selection of furnishings, internal and external colour
         schemes.

         Within sixty (60) days of signing this Agreement, Buyer shall:

         (a)    Provide BRAD with an external paint scheme agreed on by the 
                parties;

         (b)    select interior colours (from BRAD's standard colours);and

         (c)    Provide to BRAD, on drawings which will be forwarded to Buyer,
                language translations for interior and exterior Aircraft labels.

                    Failure of Buyer to comply with these requirements may
                    result in an increase in price, a delay in delivery of the
                    Aircraft, or both.

7.2      On or before execution of this Agreement Buyer shall notify BRAD in
         writing of the BFE (if any) that Buyer wishes to have incorporated into
         each Aircraft. Buyer shall also provide details of:

                a.  weights and dimensions of the BFE;

                b.  test equipment or special tools required to       
                               incorporate the BFE;   and

                c.  any other information BRAD may reasonably require.

         Within one hundred and twenty (120) calendar days thereafter, BRAD
         shall advise Buyer of its acceptance or rejection of the BFE and of the
         dates by which each item of BFE is required by BRAD. If required the
         parties hereto shall execute a Change Order in accordance with Article
         9.1 to cover those BFE accepted by BRAD.

7.3      The BFE accepted by BRAD pursuant to this Article shall be incorporated
         in the manufacturing process of the Aircraft subject to the following
         conditions:

                a.   Title to the BFE shall remain at all times with Buyer and
                     risk of loss of the BFE shall remain at all times with
                     Buyer except for damages caused by BRAD's gross negligence.


<PAGE>   16


                b.   The BFE must be received F.O.B. BRAD's plant or such other
                     place as BRAD may designate, no later than the date agreed
                     upon between Buyer and BRAD, free and clear of any taxes,
                     duties, licenses, charges, liens or other similar claims;

                c.   The BFE shall meet:

                     1) the standards of quality of BRAD, and

                     2) the requirements of the applicable airworthiness
                        certification agency;

                d.   The BFE shall be delivered to BRAD in good condition and
                     ready for immediate incorporation into the Aircraft. BRAD
                     shall, upon receipt, inspect the BFE as to quantity and
                     apparent defects and inform Buyer of any discrepancies and
                     the required corrective actions to be taken;

                e.
                         [CONFIDENTIAL PORTION DELETED]

                        . Buyer shall also furnish information necessary for its
                     proper storage, fitment, servicing, maintenance and
                     operation and availability of test equipment or special
                     tools;

                f.
                         [CONFIDENTIAL PORTION DELETED]



7.4      If at any time between receipt of the BFE by BRAD and the Delivery
         Date, it is determined by BRAD that an item of BFE supplied does not
         meet the standards and requirements described above or its fitment,
         integration and testing in the Aircraft or 

<PAGE>   17
         Aircraft systems create delays in the manufacturing or certification
         process, then such BFE may be removed and replaced by other BFE or by
         BRAD's equipment.

                         [CONFIDENTIAL PORTION DELETED]
                                              .

7.5      In the event that the Scheduled Delivery Date is delayed due to any
         delay caused by Buyer's failure to: 

                    a.  deliver, or have BFE delivered by the date required;

                    b.  ensure satisfactory design, suitability, use or 
                        operation of the BFE;

                    c.  furnish or obtain applicable BFE data;

                    d.  perform any adjusting, calibrating, retesting or
                        updating of BFE;

                    e.  furnish or obtain any approvals in compliance with the
                        provisions of this Article; or

                    f.  comply with the conditions of this Article.

         BRAD agrees to discuss with Buyer on the steps to be taken to minimize,
         cure, eliminate or work around the delay
                         [CONFIDENTIAL PORTION DELETED]
                                                                .

7.6      Should there be a delay caused by an event to which reference is made
         in Article 13.0 in connection with the BFE and if such delay cannot
         reasonably be minimized, cured, eliminated or worked around by
         agreement of the parties,
                         [CONFIDENTIAL PORTION DELETED]

                                                     .

7.7      If this Agreement is terminated in whole or in part in accordance with
         the provisions thereof BRAD may elect to, by written notice to Buyer,
         either:

                    a.  purchase the BFE ordered by Buyer and/or received by
                        BRAD at the invoice price paid by Buyer; or

                    b.  return the BFE to Buyer FOB BRAD's plant, or such other
                        place that BRAD may designate.

<PAGE>   18

ARTICLE 8 - CERTIFICATION

8.1      BRAD has obtained from Transport Canada, the Canadian Department of
         Transportation ("DOT"), a DOT Type Approval (Transport Category) and
         will obtain from the Federal Aviation Administration of the United
         States ("FAA") an FAA Type Certificate for the type of aircraft
         purchased under this Agreement.

8.2      BRAD shall provide to Buyer a DOT Certificate of Airworthiness For
         Export (Transport Category) on or before the Delivery Date.

8.3      BRAD shall not be obligated to obtain any other certificates or
         approvals as part of this Agreement. The obtaining of any import
         licence or authority required to import or operate the Aircraft into
         any country outside of Canada shall be the responsibility of Buyer.
         BRAD shall, to the extent permitted by law, and with Buyer's
         assistance, seek the issuance of a Canadian export licence to enable
         Buyer to export the Aircraft from Canada subject to prevailing export
         control regulations in effect on the Delivery Date.

8.4      If any addition or change to, or modification or testing of the
         Aircraft is required by any law or governmental regulation or
         requirement or interpretation thereof by any governmental agency having
         jurisdiction in order to meet the requirements of Article 8.2, (a
         "Regulatory Change") such Regulatory Change shall be made to the
         Aircraft prior to Delivery Date, or at such other time after the
         Delivery Date as the parties may agree upon.

8.5      The Regulatory Change shall be made without additional charge to Buyer
         unless such Regulatory Change is:

         (a)    necessary to comply with any requirement of the United States,
                the country of import, which varies from or is in addition to
                its requirements in effect on the date hereof for the issuance
                of a Certificate of Airworthiness, in which case Buyer shall pay
                BRAD's reasonable charges for such Regulatory Change, or

         (b)    required by any governmental law or regulations or
                interpretation thereof promulgated by DOT or the FAA which is
                effective subsequent to the date of this Agreement but before
                the Delivery Date and is applicable to all aircraft in general
                or to all aircraft of the same category as the Aircraft, in
                which case Buyer shall pay BRAD's reasonable charges for such
                Regulatory Change incorporated in any such Aircraft.
<PAGE>   19

8.6      If delivery of the Aircraft is delayed by the incorporation of any
         Regulatory Change, such delay shall be an Excusable Delay within the
         meaning of Article 13.

8.7      BRAD shall issue a Change Order, reflecting any Regulatory Change
         required to be made under this Article 8, which shall set forth in
         detail the particular changes to be made and the effect, if any, of
         such changes on design, guaranteed performance, weight, balance, time
         of delivery, Base Price and estimated Purchase Price. Any Change Orders
         issued pursuant to this Article shall be effective and binding upon the
         date of BRAD's transmittal of such Change Order.

8.8      If the use of any of the certificates identified in this Article 8 are
         discontinued during the performance of this Agreement, reference to
         such discontinued certificate shall be deemed a reference to any other
         certificate or instrument which corresponds to such certificate or, if
         there should not be any such other certificate or instrument, then BRAD
         shall be deemed to have complied with such discontinued Certificate(s)
         upon demonstrating that the Aircraft complies substantially with the
         Specification.


<PAGE>   20

ARTICLE 9 - ACCEPTANCE PROCEDURE

9.1.1    BRAD shall give Buyer at least thirty (30) days advance notice, by
         facsimile or telegraphic communication or other expeditious means, of
         the projected date of readiness of each Aircraft for inspection and
         delivery.

9.1.2    BRAD shall give Buyer at least ten (10) working days advance notice, by
         facsimile or telegraphic communication or other expeditious means, of
         the date on which an Aircraft will be ready for Buyer's inspection,
         flight test and acceptance (the "Readiness Date").

9.2      Within two (2) days following receipt by Buyer of the notice of
         Readiness Date Buyer shall:

         (a)    provide notice to BRAD as to the source and method of payment of
                the balance of the Aircraft Purchase Price;

         (b)    identify to BRAD the names of Buyer's representatives who will
                participate in the inspection and/or acceptance flight and
                Aircraft acceptance and provide evidence of the authority of the
                designated persons to execute the Certificate of Acceptance and
                other delivery documents on behalf of Buyer.

9.3      Buyer shall have three (3) consecutive working days commencing on the
         Readiness Date in which to complete said inspection and acceptance
         flight (such three (3) working day period being the "Acceptance
         Period").

9.4      Up to four (4) representatives of Buyer may participate in Buyer's
         inspection of the Aircraft and two (2) representatives of Buyer may
         participate in the acceptance flight. BRAD shall, if requested by
         Buyer, perform an acceptance flight of not less than one (1) and not
         more than three (3) hours duration. Ground inspection and acceptance
         flight shall be conducted in accordance with BRAD's acceptance
         procedures (a copy of which shall be provided to Buyer at least 30 days
         prior to the Scheduled Delivery Date of the Aircraft hereunder) and at
         BRAD's expense. BRAD shall retain care, custody and control over the
         Aircraft.

9.5      If no Aircraft defect or discrepancy is revealed during the inspection
         and/or flight test, Buyer shall accept the Aircraft, on or before the
         last day of the Acceptance Period in accordance with the provisions of
         this Article 9.7.

9.6      If any defect or discrepancy in the Aircraft is revealed by Buyer's
         ground inspection and/or flight test, the defect or discrepancy will
         promptly be corrected by BRAD, at no cost to Buyer, which correction
         may occur during or after the Acceptance Period depending on the nature
         of the defect or discrepancy and of the time required for correction.
         To the extent necessary to verify such correction, BRAD shall perform
         one (1) or more further acceptance flights.


<PAGE>   21

9.7      Upon completion of the ground inspection and acceptance flight of the
         Aircraft and correction of any defects or discrepancies:

                (a)      Buyer will sign a Certificate of Acceptance (in the
                         form of Exhibit I hereto) for the Aircraft. Execution
                         of the Certificate of Acceptance by or on behalf of
                         Buyer shall be evidence of and Buyer will be deemed to
                         have examined the Aircraft and found it in accordance
                         with the provisions of this Agreement. The date of
                         signature of the Certificate of Acceptance shall be the
                         "Acceptance Date";

                (b)      BRAD will supply a DOT Certificate of Airworthiness for
                         Export and

                (c)      Buyer shall pay BRAD the balance of the Aircraft
                         Purchase Price and any other amounts due, at which time
                         BRAD shall cause a bill of sale to be issued (in the
                         form of Exhibit II hereto) passing to Buyer good title
                         to the Aircraft free and clear of all liens, claims,
                         charges and encumbrances except for those liens,
                         charges or encumbrances created by or claimed through
                         Buyer (the "Bill of Sale"). The date on which BRAD
                         delivers the Bill of Sale and Buyer takes delivery of
                         the Aircraft shall be the "Delivery Date".

         Delivery of the Aircraft shall be evidenced by the execution of the
         Bill of Sale and of the Certificate of Receipt of Aircraft (in the form
         of Exhibit III hereto).

9.8      Provided that BRAD has met all of its obligations under this Article 9,
         should Buyer

                         [CONFIDENTIAL PORTION DELETED]
                                                     .

9.9      Buyer shall promptly, upon demand,
                         [CONFIDENTIAL PORTION DELETED]

         Provided that BRAD has met all of its obligations under this Article 9,
         should Buyer not accept, pay for and/or take delivery of any one of the
         Aircraft
                         [CONFIDENTIAL PORTION DELETED]

               , make arrangements satisfactory to BRAD to accept
         delivery and provide payment for all amounts owing or to become due 
         pursuant to this Agreement.


<PAGE>   22
ARTICLE 10 - TITLE AND RISK

10.1     Title to the Aircraft passes to Buyer when BRAD presents the Bill of
         Sale to Buyer on the Delivery Date. Except as provided in Article 9.7
         (c), risk of loss of or damage to the Aircraft passes to Buyer on the
         Delivery Date.

10.2     If, after transfer of title on the Delivery Date, the Aircraft remains
         in or is returned to the care, custody or control of BRAD, Buyer shall
         retain risk of loss of, or damage to the Aircraft and for itself and on
         behalf of its insurer(s) hereby waives and renounces to, and releases
         BRAD and any of BRAD's affiliates from any claim whether direct,
         indirect or by way of subrogation for damages to or loss of the
         Aircraft arising out of, or related to, or by reason of such care,
         custody or control.


<PAGE>   23
ARTICLE 11 - CHANGES

11.1     Other than a Permitted Change as described in Article 11.2, or a
         Regulatory Change as described in Articles 8.4 and 8.5, any change to
         this Agreement (including without limitation the Specification) or any
         features or Buyer Furnished Equipment ("BFE"), if any, changing the
         Aircraft from that described in the Specification attached hereto,
         requested by Buyer, and as may be mutually agreed upon by the parties
         hereto, shall be made using a change order ("Change Order")
         substantially in the format of Exhibit IV hereto. Should Buyer request
         a change, BRAD shall advise Buyer of the effect, if any, of such change
         request on:

         (a)    the Scheduled Delivery Date;

         (b)    the price and payment terms applicable to the Change Order; and

         (c)    any other material provisions of this Agreement which will be
                affected by the Change Order.

         Such Change Order shall become effective and binding on the parties
         hereto when signed by a duly authorized representative of each party.

11.2     BRAD, prior to the Delivery Date and without a Change Order or Buyer's
         consent, may:



         (a) substitute the kind, type or source of any material, part,
             accessory or equipment with any other material, part, accessory or
             equipment of like, equivalent or better kind or type; or 

         (b) make such change or modification to the Specification as it deems
             appropriate to:

             1) improve the Aircraft, its maintainability or appearance, or

             2) to prevent delays in manufacture or delivery, or

             3) to meet the requirements of Articles 2 and 8, other than for a
                Regulatory Change to which the provisions of Articles 8.4 and
                8.5 shall apply,

         provided that such substitution, change or modification shall not
         affect the Aircraft Purchase Price or materially affect the Scheduled
         Delivery Date, interchangeability or replaceability of spare parts or
         performance characteristics of the Aircraft. Any change made in 
         accordance with the provisions of this Article 11.2 shall be deemed to
         be a "Permitted Change" and the cost thereof shall be borne by BRAD.


<PAGE>   24
ARTICLE 12 - BUYER'S REPRESENTATIVES AT MANUFACTURE SITE

12.1     From time to time, commencing with the date of this Agreement and
         ending with the Delivery Date of the last Aircraft purchased hereunder,
         BRAD shall furnish, without charge, office space at BRAD's facility for
         one (1) representative of Buyer. Buyer shall be responsible for all
         expenses of its representative and shall notify BRAD at least thirty
         (30) calendar days prior to the first scheduled visit of such
         representative and three (3) days for each subsequent visit.

12.2     BRAD's and BRAD's affiliates facilities shall be accessible to Buyer's
         representative during normal working hours. Buyer's representative
         shall have the right to periodically observe the work at BRAD's or
         BRAD's affiliates' facilities where the work is being carried out
         provided there shall be no disruption in the performance of the work.

12.3     BRAD shall advise Buyer's representative of BRAD's or BRAD's
         affiliates' rules and regulations applicable at the facilities being
         visited and Buyer's representative shall conform to such rules and
         regulations.

12.4     At any time prior to delivery of the Aircraft, Buyer's representative
         may request, in writing, correction of parts or materials which they
         reasonably believe are not in accordance with the Specification. BRAD
         shall provide a written response to any such request. Communication
         between Buyer's representative and BRAD shall be solely through BRAD's
         Contract Department or its designate.

12.5


                         [CONFIDENTIAL PORTION DELETED]


<PAGE>   25
ARTICLE 13 - EXCUSABLE DELAY

13.1     In the event of a delay on the part of BRAD in the performance of its
         obligations or responsibilities under the provisions of this Agreement
         due directly or indirectly to a cause which is beyond the reasonable
         control or without the fault or negligence of BRAD (an "Excusable
         Delay"), BRAD shall not be liable for, nor be deemed to be in default
         under this Agreement on account of such delay in delivery of the
         Aircraft or other performance hereunder and the time fixed or required
         for the performance of any obligation or responsibility in this
         Agreement shall be extended for a period equal to the period during
         which any such cause or the effect thereof persist. Excusable Delay
         shall include, without limitation, delays occasioned by the following
         causes:

         (a)    force majeure or acts of God;

         (b)    war, warlike operations, act of the enemy, armed aggression,
                civil commotion, insurrection, riot or embargo;

         (c)    fire, explosion, earthquake, lightning, flood, draught,
                windstorm or other action of the elements or other catastrophic
                or serious accidents;

         (d)    epidemic or quarantine restrictions;

         (e)    any legislation, act, order, directive or regulation of any
                governmental or other duly constituted authority;

         (f)    strikes, lock-out, walk-out, and/or other labour troubles
                causing cessation, slow-down or interruption of work;

         (g)    lack or shortage or delay in delivery of supplies, materials,
                accessories, equipment, tools or parts;

         (h)    delay or failure of carriers, subcontractors or suppliers for
                any reason whatsoever; or

         (i)    delay in obtaining any airworthiness approval or certificate, or
                any equivalent approval or certification, by reason of any law
                or governmental order, directive or regulation or any change
                thereto, or interpretation thereof, by a governmental agency,
                the effective date of which is subsequent to the date of this
                Agreement, or by reason of any change or addition made by BRAD
                or its affiliates or requested by a governmental agency to the
                compliance program of BRAD or of its affiliate, or any part
                thereof, as same may have been approved by DOT, or change to the
                interpretation thereof to obtain any such airworthiness approval
                or certificate.

13.2     (a)    If BRAD concludes, based on its appraisal of the facts and
                normal scheduling procedures, that due to Excusable Delay
                delivery of any Aircraft will be delayed for more than nine (9)
                months after the originally Scheduled Delivery Date or any
                revised date agreed to in writing by the parties, BRAD shall
                promptly notify Buyer in writing and either party may then
                terminate this Agreement with respect 
<PAGE>   26

                to such Aircraft by giving written notice to the other within
                fifteen (15) days after receipt by Buyer of BRAD's notice.


                (b) If, due to Excusable Delay, delivery of any Aircraft is
                    delayed for more than twelve (12) months after the Scheduled
                    Delivery Date, either party may terminate this Agreement
                    with respect to such Aircraft by giving written notice to
                    the other within fifteen (15) days after the expiration of
                    such twelve (12) month period.

13.3     Termination under Article 13.2 shall discharge all obligations and
         liabilities of Buyer and BRAD hereunder with respect to such delayed
         Aircraft and all related undelivered items and services, except that
         BRAD shall promptly repay to Buyer, and BRAD's sole liability and
         responsibility shall be limited to the repayment to Buyer, of all
         advance payments for such Aircraft received by BRAD

                         [CONFIDENTIAL PORTION DELETED]
                                       , less any amount due by Buyer to BRAD.

13.4     The termination rights set forth in Article 13.2 are in substitution
         for any and all other rights of termination or contract lapse arising
         by operation of law in connection with Excusable Delays.


<PAGE>   27

ARTICLE 14 - NON-EXCUSABLE DELAY

14.1     If delivery of the Aircraft is delayed by causes not excused under
         Article 13.1 (a "Non- Excusable Delay"), BRAD shall pay Buyer,
         [CONFIDENTIAL PORTION DELETED] of Non-Excusable Delay in excess of a
         grace period of [CONFIDENTIAL PORTION DELETED], to a [CONFIDENTIAL
         PORTION DELETED] of [CONFIDENTIAL PORTION DELETED] for any such delayed
         Aircraft.

14.2     [CONFIDENTIAL PORTION DELETED]

14.3     Any right Buyer might otherwise have to refuse to accept delivery of an
         Aircraft when offered by BRAD for inspection and acceptance following a
         Non-Excusable Delay [CONFIDENTIAL PORTION DELETED] will not have the
         right to refuse to take delivery of any Aircraft because of a
         Non-Excusable Delay unless and until the aggregate duration of the
         Non-Excusable Delay for such Aircraft [CONFIDENTIAL PORTION DELETED].
         If BRAD has not offered such Aircraft for inspection and acceptance
         during the Non-Excusable Delay Period, Buyer may [CONFIDENTIAL PORTION
         DELETED]. If, no such notice having been given, BRAD offers such
         Aircraft for inspection and acceptance after the Non-Excusable Delay
         Period and Buyer refuses to take delivery of such Aircraft because of
         Non-Excusable Delay, 
                         [CONFIDENTIAL PORTION DELETED]
         the [CONFIDENTIAL PORTION DELETED] calculated under Article 14.1 to the
         date of termination.  In addition BRAD shall promptly repay to Buyer 
         all advance payments for such Aircraft
                         [CONFIDENTIAL PORTION DELETED]

                                                  .

<PAGE>   28

ARTICLE 15 - LOSS OR DAMAGE

15.1     In the event that prior to the Delivery Date of any of the Aircraft,
         the Aircraft is lost, destroyed or damaged beyond repair due to any
         cause, BRAD shall promptly notify Buyer in writing. Such notice shall
         specify the earliest date reasonably possible, consistent with BRAD's
         other contractual commitments and production schedule, by which BRAD
         estimates it would be able to deliver a replacement for the lost,
         destroyed or damaged Aircraft. This Agreement shall automatically
         terminate as to such Aircraft unless Buyer gives BRAD written notice,
         within thirty (30) days of BRAD's notice, that Buyer desires a
         replacement for such Aircraft. If Buyer gives such notice to BRAD, the
         parties shall execute an amendment to this Agreement which shall set
         forth the Delivery Date for such replacement aircraft and corresponding
         new replacement Aircraft Purchase Price; provided, however, that
         nothing herein shall obligate BRAD to manufacture and deliver such
         replacement aircraft if it would require the reactivation or
         acceleration of its production line for the model of aircraft purchased
         hereunder. The terms and conditions of this Agreement applicable to the
         replaced Aircraft shall apply to the replacement aircraft.

15.2     In the event that one of the first seven Aircraft is lost or damaged,
         as per this section, Buyer may nonetheless return the Dash 8 Series 300
         aircraft leased from BRAD as per the scheduled delivery, and thus
         advance in sequence the one-for one trade-in obligation.


<PAGE>   29

ARTICLE 16  -  TERMINATION

16.1     This Agreement may be terminated, in whole or in part, with respect to
         any or all of the Aircraft before the Delivery Date by BRAD or Buyer by
         notice of termination to the other party upon the occurrence of any of
         the following events:

                (a) a party makes an assignment for the benefit of creditors or
                    admits in writing its inability to pay its debts or
                    generally does not pay its debts as they become due; or

                (b) a receiver or trustee is appointed for a party or for
                    substantially all of such party's assets and, if appointed
                    without such party's consent, such appointment is not
                    discharged or stayed within thirty (30) calendar days
                    thereafter; or 

                (c) proceedings or action under any law relating to bankruptcy,
                    insolvency or the reorganization or relief of debtors are
                    instituted by or against a party, and, if contested by such
                    party, are not dismissed or stayed within thirty (30)
                    calendar days thereafter; or

                (d) 
                         [CONFIDENTIAL PORTION DELETED]

                                                                .

16.2     In addition, this Agreement may be terminated, in whole or in part,
         before the Delivery Date with respect to any or all undelivered
         Aircraft:

                (a) as otherwise provided in this Agreement; or

                (b) if Buyer is in default or breach of any material term or
                    condition of this Agreement and Buyer does not cure such
                    default or breach within forty-five (45) calendar days after
                    receipt of notice from BRAD specifying such default or
                    breach.

16.3     Buyer may terminate this Agreement, in whole or in part, before the
         Delivery Date, with respect to any undelivered Aircraft, if BRAD is in
         default or breach of any material term or condition of this Agreement
         and such breach remains uncured for a period of forty-five (45)
         calendar days following receipt of a notice from Buyer specifying the
         nature of default or breach.


<PAGE>   30

16.4     In case of termination of this Agreement by BRAD pursuant to Articles
         16.1 or 16.2:

         (a)    all rights (including property rights), if any, which Buyer may
                have or may have had in or to this Agreement or any or all of
                the undelivered Aircraft shall become null and void with
                immediate effect;

         (b)    all rights (including property rights and the right to sell the
                Aircraft to another party, if any) in and to any or all of the
                undelivered Aircraft shall be vested with BRAD free and clear of
                any ownership or title rights, if any, liens, charges or
                encumbrances; and

         (c)    all amounts paid by Buyer shall be retained by BRAD and, with
                respect to the applicable undelivered Aircraft, shall be applied
                against the costs, expenses, losses and damages incurred by BRAD
                as a result of Buyer's default and/or the termination of this
                Agreement. Buyer hereby acknowledges and recognizes that BRAD
                shall have all rights permitted by law to recover from Buyer
                such costs, expenses, losses and damages and, in any event, such
                costs, expenses, losses and damages will aggregate not less than
                the amount retained by BRAD pursuant to this Article 16.4 (c).

16.5     Subject to Article 14.1, in the event of termination of this Agreement
         by Buyer, Buyer's sole rights, remedies and recourses against BRAD and
         BRAD's obligations to Buyer shall be limited to
                         [CONFIDENTIAL PORTION DELETED]
                                                    .


<PAGE>   31

ARTICLE 17 - NOTICES

17.1     Any notice, request, approval, permission, consent or other
         communication ("Notice"), to be given or required under this Agreement
         shall be provided in writing, by registered mail, facsimile, courier,
         telegraphic or other electronic communication providing reasonable
         proof of transmission, except that no notice shall be sent by mail if
         disruption of postal service exists or is threatened either in the
         country of origin or of destination, by the party giving the Notice and
         shall be addressed as follows:

         (a)    Notice to BRAD shall be addressed to:

                             Bombardier Inc.
                             Bombardier Regional Aircraft Division
                             Garratt Boulevard
                             Downsview, Ontario
                             Canada
                             M3K 1Y5
                             Attention:  Walter A. Galloway, Director,
                             Contracts

                             Telex:             06-22128
                             Facsimile:         (416) 375-4533

         (b)    Notice to Buyer shall be addressed to:

                             Attention: Mr. Larry Risley, Chairman
                             Mesa Airlines, Inc.
                             2325 East 30th
                             Farmington, New Mexico
                             U.S.A. 87401

                             Facsimile: 505-326-4485


<PAGE>   32


17.2     Notice given in accordance with Article 17.1 shall be deemed
         sufficiently given to and received by the addressees:

         (a)    if delivered by hand, on the day when the same shall have been
                so delivered; or

         (b)    if mailed or sent by courier on the day indicated on the
                corresponding acknowledgement of receipt; or

         (c)    if sent by telex or facsimile on the day indicated by the
                acknowledgement or the answer back of the receiver in provable
                form.

ARTICLE 18  -  INDEMNITY AGAINST PATENT INFRINGEMENT

18.1     In the case of any actual or alleged infringement of any Canadian or
         United States patent or, subject to the conditions and exceptions set
         forth below, any patent issued under the laws of any other country in
         which Buyer from time to time may lawfully operate the Aircraft ("Other
         Patents"), by the Aircraft, or by any system, accessory, equipment or
         part installed in such Aircraft at the time title to such Aircraft
         passes to Buyer, BRAD shall indemnify, protect and hold harmless Buyer
         from and against all claims, suits, actions, liabilities, damages and
         costs resulting from the infringement, excluding any incidental or
         consequential damages (which include without limitation loss of revenue
         or loss of profit) and BRAD shall, at its option and expense:

         (a)    procure for Buyer the right under such patent to use such
                system, accessory, equipment or part; or

         (b)    replace such system, accessory, equipment or part with one of
                the similar nature and quality that is non-infringing; or

         (c)    modify such system, accessory, equipment or part to make same
                non-infringing in a manner such as to keep it otherwise in
                compliance with the requirements of this Agreement.

         BRAD's obligation hereunder shall extend to Other Patents only if from
         the time of design of the Aircraft, system, accessory, equipment or
         part until the alleged infringement claims are resolved:
<PAGE>   33

         (a)    such other country and the country in which the Aircraft is
                permanently registered have ratified and adhered to and are at
                the time of the actual or alleged infringement contracting
                parties to the Chicago Convention on International Civil
                Aviation of December 7, 1944 and are fully entitled to all
                benefits of Article 27 thereof; and

         (b)    such other country and the country of registration shall each
                have been a party to the International Convention for the
                Protection of Industrial Property (Paris Convention) or have
                enacted patent laws which recognize and give adequate protection
                to inventions made by the nationals of other countries which
                have ratified, adhered to and are contracting parties to either
                of the forgoing conventions.

18.2     The foregoing indemnity does not apply to BFE, or to avionics, engines
         or any system, accessory, equipment or part that was not manufactured
         to BRAD's detailed design or to any system, accessory, equipment or
         part manufactured by a third party to BRAD's detailed design without
         BRAD's authorization.

18.3     Buyer's remedy and BRAD's obligation and liability under this Article
         are conditional upon (i) Buyer giving BRAD written notice within ten
         (10) days after Buyer receives notice of a suit or action against Buyer
         alleging infringement or within twenty (20) days after Buyer receives
         any other written claim of infringement (ii) Buyer uses reasonable
         efforts in full cooperation with BRAD to reduce or mitigate any such
         expenses, damages, costs or royalties involved, and (iii) Buyer
         furnishes promptly to BRAD all data, papers and records in its
         possession or control necessary or useful to resist and defend against
         such claim or suit. BRAD may at its option conduct negotiations with
         any party claiming infringement and may intervene in any suit or
         action. Whether or not BRAD intervenes, BRAD shall be entitled at any
         stage of the proceedings to assume or control the defence. Buyer's
         remedy and BRAD's obligation and liability are further conditional
         judgment upon BRAD's prior approval of Buyer's payment or assumption of
         any liabilities, expenses, damages, royalties or costs for which BRAD
         may be held liable or responsible for.

18.4     THE INDEMNITY, OBLIGATIONS AND LIABILITIES OF BRAD AND REMEDIES OF
         BUYER SET OUT IN THIS ARTICLE ARE EXCLUSIVE AND ACCEPTED BY BUYER
         TO BE IN LIEU OF AND IN SUBSTITUTION FOR, AND BUYER HEREBY WAIVES,
         RELEASES AND RENOUNCES, ALL OTHER INDEMNITIES, OBLIGATIONS AND
         LIABILITIES OF BRAD AND OF ITS AFFILIATES AND ALL OTHER RIGHTS,
         REMEDIES AND CLAIMS, INCLUDING CLAIMS FOR DAMAGES, DIRECT,
         INCIDENTAL OR CONSEQUENTIAL, OF BUYER AGAINST BRAD AND ITS
         AFFILIATES EXPRESS OR IMPLIED, ARISING BY LAW OR OTHERWISE, WITH 
         RESPECT TO ANY ACTUAL OR ALLEGED PATENT INFRINGEMENT BY THE 
         AIRCRAFT OR ANY INSTALLED SYSTEM, ACCESSORY, EQUIPMENT OR PART.

<PAGE>   34

ARTICLE 19 [CONFIDENTIAL PORTION DELETED]

19.1     [CONFIDENTIAL PORTION DELETED]

19.2     [CONFIDENTIAL PORTION DELETED]

19.3     BUYER AND BRAD AGREE THAT THIS AGREEMENT, HAS BEEN THE SUBJECT OF
         DISCUSSION AND NEGOTIATION AND IS FULLY UNDERSTOOD BY THE PARTIES
         HERETO AND THAT THE PRICE OF THE AIRCRAFT AND THE OTHER MUTUAL
         AGREEMENTS OF THE PARTIES SET FORTH HEREIN WERE ARRIVED AT IN
         CONSIDERATION OF THE PROVISIONS CONTAINED IN ARTICLE 19.2.

19.4     LETTER AGREEMENT MJR-009 EXCLUSIVELY SETS FORTH BRAD's POST DELIVERY
         OBLIGATIONS WITH RESPECT TO ANY NON-CONFORMANCE OF THE AIRCRAFT WITH
         THE SPECIFICATION OR ANY DEFECT IN THE AIRCRAFT.

         EXCEPT AS SET FORTH IN SIDE LETTERS MJR-006, MJR-007, MJR-008 AND
         MJR-009 THERE ARE NO UNDERSTANDINGS, REPRESENTATIONS, CONDITIONS OR
         WARRANTIES, EXPRESS OR IMPLIED, BETWEEN THE PARTIES WITH RESPECT TO ANY
         NON-CONFORMANCE OF THE AIRCRAFT WITH THE SPECIFICATION, OR ANY DEFECT
         IN THE AIRCRAFT, OR ANY DEFECT IN ANY OTHER THING DELIVERED UNDER THIS
         AGREEMENT.

19.5     [CONFIDENTIAL PORTION DELETED]


<PAGE>   35

ARTICLE 20 - ASSIGNMENT

20.1     Either party may assign, sell, transfer or dispose of (in whole or in
         part) any of its rights and obligations hereunder to a wholly owned
         subsidiary or affiliate provided that there is no increase to the
         liability and/or responsibility of the non-assigning party and that the
         assigning party remains jointly and severally liable with any assignee
         for the performance of its obligation under this Agreement.

20.2     Except as provided in Article 20.1, Buyer shall not assign, sell,
         transfer or dispose of (in whole or in part) any of its rights or
         obligations hereunder without BRAD's prior written consent, such
         consent not to be unreasonably withheld. In the event of such
         assignment, sale, transfer or disposition Buyer shall remain jointly
         and severally liable with any assignee for the performance of all and
         any of Buyer's obligations under this Agreement and BRAD reserves the
         right to amend one or more of the terms and conditions of this
         Agreement.

20.3     Notwithstanding Article 20.2 above, Buyer may assign, after transfer of
         title of the Aircraft, its rights under the Agreement to a third party
         purchaser of any one of the Aircraft, provided said third party
         acknowledges in writing to be bound by the applicable terms and
         conditions of this Agreement, including but not limited to the
         provisions and limitations as detailed Annex A, Customer Support
         Services, Annex B, Warranty and Service Life Policy and of the
         provisions and limitations in Limitation of Liability as defined in
         Article 19 hereof and Indemnity Against Patent Infringement as defined
         in Article 18 hereof and any other on-going obligations of Buyer, which
         shall apply to it to the same extent as if said third party was Buyer
         hereunder and provided that there is no increase to the liability
         and/or responsibility of BRAD and provided Buyer shall remain jointly
         and severally liable with the assignee for the performance of any and
         all of Buyer's obligations under this Agreement.

20.4     BRAD may assign any of its rights to receive money hereunder without
         the prior consent of Buyer.

20.5     Notwithstanding the other provisions of this Article 20, BRAD shall, at
         Buyer's cost and expense, if so requested in writing by Buyer take any
         action reasonably required for the purpose of causing any of the
         Aircraft to be subjected (i) to, after the Delivery Date, an equipment
         trust, conditional sale or lien, or (ii) to another arrangement for the
         financing of the Aircraft by Buyer, providing, however, there shall be
         no increase to the liability and/or responsibility of BRAD arising
         through such financing and provided Buyer shall remain jointly and
         severally liable with the assignee for the performance of any and all
         of Buyer's obligations under this Agreement.


<PAGE>   36

ARTICLE 21 - SUCCESSORS

         This Agreement shall inure to the benefit of and be binding upon each
         of BRAD and Buyer and their respective successors.


<PAGE>   37

ARTICLE 22 - APPLICABLE LAWS

22.1     THIS AGREEMENT SHALL BE SUBJECT TO AND CONSTRUED IN ACCORDANCE WITH AND
         THE RIGHTS OF THE PARTIES SHALL BE GOVERNED BY THE DOMESTIC LAWS OF THE
         STATE OF NEW YORK, U.S.A., EXCLUDING THE CHOICE OF LAW RULES, AND THE
         PARTIES HAVE AGREED THAT THE APPLICATION OF THE UNITED NATIONS
         CONVENTION ON CONTRACTS FOR THE INTERNATIONAL SALE OF GOODS IS HEREBY
         EXCLUDED.

22.2     BRAD's obligations under this Agreement shall be subject to and apply
         only to the extent permitted by applicable laws, regulations,
         directives and/or orders regarding export controls.


<PAGE>   38

ARTICLE 23 - CONFIDENTIAL NATURE OF AGREEMENT

23.1     This Agreement is confidential between the parties and shall not,
         without the prior written consent of the other party, be disclosed by
         either party in whole or in part to any other person or body except as
         may be necessary for either party to carry out its obligations under
         this Agreement and fulfill its obligations under the applicable
         securities laws governing each party. The parties shall however only
         disclose those parts of the agreement which are expressly required by
         such securities laws..

23.2     Except as may be reasonably required for the normal operation,
         maintenance, overhaul and repair of the Aircraft, Buyer shall hold
         confidential all technical data and information supplied by or on
         behalf of BRAD. Buyer shall not reproduce any technical data or
         information or divulge the same to any third party without the prior
         written consent of BRAD.

23.3     Either party may announce the signing of this Agreement by means of a
         notice to the press provided that the content and date of the notice
         has been agreed to by the other party.


<PAGE>   39

ARTICLE 24 - AGREEMENT

24.1     This Agreement and the matters referred to herein constitute the entire
         Agreement between BRAD and Buyer and supersede and cancel all prior
         representations, brochures, alleged warranties, statements,
         negotiations, undertakings, letters, memorandum of Agreement,
         acceptances, agreements, understandings, contracts and communications,
         whether oral or written, between BRAD and Buyer or their respective
         agents, with respect to or in connection with the subject matter of
         this Agreement and no agreement or understanding varying the terms and
         conditions hereof shall be binding on either BRAD or Buyer hereto
         unless an amendment to this Agreement is issued and duly signed by
         their respective authorized representatives pursuant to the provisions
         of this Article hereof. All Appendices, Exhibits and Annexes referred
         to herein and attached hereto are made part of this Agreement by
         reference. In the event of any inconsistencies between this Agreement
         and any of the Appendices, Exhibits and Annexes or other documents
         referred to herein, the provisions of this Agreement shall prevail.

24.2     If any of the provisions of this Agreement are for any reason declared
         by judgement of a court of competent jurisdiction to be unenforceable
         or ineffective, those provisions shall be deemed severable from the
         other provisions of this Agreement and the remainder of this Agreement
         shall remain in full force and effect.

24.3     THE OBLIGATIONS AND LIABILITIES OF BRAD, INCLUDING THE WARRANTY AND
         SERVICE LIFE POLICY ATTACHED [CONFIDENTIAL PORTION DELETED], HAVE BEEN
         EXPRESSED, DISCUSSED, UNDERSTOOD AND AGREED TO BETWEEN BUYER AND BRAD
         IN CONSIDERATION OF THE PURCHASE PRICE OF THE AIRCRAFT AND OTHER
         PROVISIONS OF THIS AGREEMENT.

24.4     BRAD and Buyer confirm to each other they have each obtained the
         required authorizations and fulfilled any conditions applicable to
         enable each of them to enter into this Agreement.


<PAGE>   40

In witness whereof this Agreement was signed on the date written hereof:



For and on behalf of                                  For an on behalf of



BUYER:                                                BRAD.:



Per:  ____________________                            Per:______________________



Title: ___________________                            Title:____________________


<PAGE>   41

                                   APPENDIX I
                                 DHC-8 AIRCRAFT
                           ECONOMIC ADJUSTMENT FORMULA

                         [CONFIDENTIAL PORTION DELETED]


<PAGE>   42
                                  APPENDIX II
                                  -----------

                               DELIVERY SCHEDULE
                               -----------------

First Aircraft                    February                     1996
Second Aircraft                   March                        1996
Third Aircraft                    March                        1996
Fourth Aircraft                   April                        1996
Fifth Aircraft                    April                        1996
Sixth Aircraft                    May                          1996
Seventh Aircraft                  May                          1996
Eighth Aircraft                   June                         1996
Ninth Aircraft                    June                         1996
Tenth Aircraft                    July                         1996
Eleventh Aircraft                 August                       1996
Twelfth Aircraft                  August                       1996
Thirteenth Aircraft               September                    1996
Fourteenth Aircraft               September                    1996
Fifteenth Aircraft                October                      1996
Sixteenth Aircraft                October                      1996
Seventeenth Aircraft              November                     1996
Eighteenth Aircraft               November                     1996
Nineteenth Aircraft               December                     1996
Twentieth Aircraft                December                     1996
Twenty-First Aircraft             January                      1997
Twenty-Second Aircraft            January                      1997
Twenty-Third Aircraft             February                     1997
Twenty-Fourth Aircraft            February                     1997
Twenty-Fifth Aircraft             March                        1997

<PAGE>   43

                                 APPENDIX III
                                      
                                SPECIFICATION
                                      
                                  DHC-8-100:
                                      
                             DETAIL SPECIFICATION
                                      
                            Number DS8-200 Issue 2
                                      
                                 August 1994


<PAGE>   44
                                   APPENDIX IV

                        BUYER SELECTED OPTIONAL FEATURES

                                                          PRICE IN FEB. 1, 1995
                                                          ---------------------
NUMBER                         DESCRIPTION                     U.S. DOLLARS
- ------                         -----------                ---------------------

 803SO00073              Dash 8 Series 200 (Model 202)    
                                                          
 825CH01152             Interior Configuration - United   
                                Express (Mesa)            
                                                          
 811CH00029              Exterior Paint Scheme United     
                                Express (Mesa)                [CONFIDENTIAL
                                                         
 821CH00029             Ground Air Conditioning RH Side   
                                                          
 823CH00032               Selcal System (Frederickson     
                         Jetcal 5 Compatible with VHF     
                                     Comm                 
                                                          
 823SO08041              VHF Comm Dual-Collins Proline    
                                  II (VHF 22)                    PORTION
                                                          
 824CH82066              Batteries On line with Ground    
                                     Power                
                                                          
824SO08070-1              Two 40 Amp\hour SAFT NICAD      
                            Batteries ILO Standard        
                                                          
 825CH01077              ELT (Pointer C-4000) Post Mod    
                                    8\2100                       DELETED]
                                                          
 834CH00098                 Audible Altitude Alert        
                                                          
 834CH00375              Dual Collins Mode S & TCAS II    

<PAGE>   45
NUMBER                     Description                   Price in Feb. 1, 1995
- ------                     -----------                   ---------------------
                                                              U.S. Dollars
                                                         ---------------------

 834CH00379            Replacement of EFIS with        
                    Electro-Mechanical Instruments     
                                                       
834SO08042-1       VHF Nav. Dual Collins Proline II    
                               (VIR 32)                      [CONFIDENTIAL
                                                       
834SO08043-1         ADF Single Collins Proline II     
                               (ADF 60)                
                                                       
 834SO08045          DME No. 1 Collins Proline II      
                               (DME 42)                
                                                       
834SO08048-1         DME No. 2 Collins Proline II      
                               (DME 42)                
                                                       
 835CH00011           Automatic Drop Down Oxygen                PORTION
                                                       
825S001076-1         Equipment\Furnishings SU for      
                           Galley Series 200           
                                                       
 825CH02001                  Additional SU             
    TOTAL                                                       DELETED]
                                                       

<PAGE>   46
                                   APPENDIX V
                        ESTIMATED AIRCRAFT DELIVERY PRICE


                                                     Aircraft Purchase
                                                     -----------------
Aircraft                                                   Price
- --------                                                   -----
First Aircraft
Second Aircraft
Third Aircraft
Fourth Aircraft                                      [CONFIDENTIAL
Fifth Aircraft
Sixth Aircraft
Seventh Aircraft
Eighth Aircraft
Ninth Aircraft
Tenth Aircraft
Eleventh Aircraft                                    PORTION
Twelfth Aircraft
Thirteenth Aircraft
Fourteenth Aircraft
Fifteenth Aircraft
Sixteenth Aircraft
Seventeenth Aircraft
Eighteenth Aircraft
Nineteenth Aircraft                                  DELETED]
Twentieth Aircraft
Twenty-First Aircraft
Twenty-Second Aircraft
Twenty-Third Aircraft
Twenty-Fourth Aircraft
Twenty-Fifth Aircraft


<PAGE>   47

                                                                       EXHIBIT I

                            CERTIFICATE OF ACCEPTANCE

The undersigned hereby acknowledges on behalf of Buyer acceptance of the
Aircraft bearing manufacturer's serial number                      fitted with
two (2) Pratt & Whitney of Canada, Ltd. PWC-120/123/ engines bearing serial
number                       and                    as being in accordance with
the terms and conditions of this Agreement signed on the   day of          ,
19   between Bombardier Regional Aircraft Division and Buyer.

Place:                                               Date:
       -------------------                                  -------------------



SIGNED FOR AND ON BEHALF OF

[BUYER'S NAME]                                       WITNESSED

Per:                                                 Per:
       -------------------                                  -------------------

Title:                                               Title:
       -------------------                                  -------------------

<PAGE>   48

                                                                      EXHIBIT II

                                  BILL OF SALE

1.       FOR VALUABLE CONSIDERATIONS, DE HAVILLAND INC., OWNER OF THE FULL LEGAL
         AND BENEFICIAL TITLE OF THE AIRCRAFT DESCRIBED AS FOLLOWS:
                                                           

                  
             ONE DE HAVILLAND DHC-8-200 AIRCRAFT BEARING:

             MANUFACTURER'S SERIAL NO.:                                  , WITH:

             PWC-/120/123/ ENGINES SERIAL NOS.:

                                                                           , AND

              AUXILIARY POWER UNIT NO.:

         DOES THIS           DAY OF               19      HEREBY SELL, GRANT, 
         TRANSFER AND DELIVER ALL RIGHTS, TITLE AND INTEREST IN AND TO SUCH
         AIRCRAFT UNTO:  [BUYER's NAME].

         BY VIRTUE OF THE EXECUTION OF THIS BILL OF SALE, DE HAVILLAND INC.
         HEREBY DIVESTS ITSELF OF ALL ITS RIGHTS, INTERESTS AND/OR LIEN OF ANY
         KIND IN THE AIRCRAFT, IN FAVOUR OF BUYER.

         BUYER:

         PLACE:                                           TIME:
               -------------------                             -----------------

         For and on behalf of

         DE HAVILLAND INC.:

         Per:
             -------------------                                               

         Title:
               -------------------                            

<PAGE>   49

EXHIBIT III

                       CERTIFICATE OF RECEIPT OF AIRCRAFT

     THE UNDERSIGNED HEREBY ACKNOWLEDGES TO HAVE RECEIVED FROM BOMBARDIER
REGIONAL AIRCRAFT DIVISION, AT THE DOWNSVIEW AIRPORT, ADJACENT TO BRAD'S PLANT
IN THE CITY OF DOWNSVIEW, PROVINCE OF ONTARIO, CANADA, ON THE               DAY
OF                , AT THE HOUR OF               O'CLOCK, ONE (1) de HAVILLAND
DHC-8-/100/200/300/ AIRCRAFT, BEARING SERIAL NUMBER               , INCLUDING
WITH THE AIRCRAFT TWO (2) PWC-/120/123/ ENGINES BEARING MANUFACTURER'S SERIAL
NUMBERS               &                    AND OTHER MAJOR REPLACEABLE
ACCESSORIES ATTACHED TO THE AIRCRAFT AND ENGINES.

Signed for and on behalf of [Buyer's name]:


Per:
    ---------------------                                               

Title:
      -------------------                                               


<PAGE>   50

                                                                      EXHIBIT IV

                                  CHANGE ORDER
                                   (PRO FORMA)


<PAGE>   51
================================================================================
                             CONTRACT CHANGE ORDER
================================================================================

PURCHASER:

PURCHASE AGREEMENT NO.:                                        AIRCRAFT TYPE:

C.C.O. NO.:                                                  DATED:

PAGES AFFECTED:                                              PAGE    of   
                                                                  --   --

REASON FOR CHANGE:

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

DESCRIPTION OF CHANGE:


PAGES TO BE SUBSTITUTED                               NEW/REVISED PAGES



CHANGES TO THE AFFECTED PAGES ARE AS FOLLOWS:


- --------------------------------------------------------------------------------
      ALL OTHER TERMS AND CONDITIONS OF THE AGREEMENT WILL REMAIN UNCHANGED
- --------------------------------------------------------------------------------


FOR AND ON BEHALF OF:                                  FOR AND ON BEHALF OF:
================================================================================
BRAD
                                             -----------------------------------


Signed:                                      Signed:
       ---------------------------                  ----------------------------


Date:                                        Date:
     -----------------------------                ------------------------------
================================================================================


<PAGE>   52

Date: March 24, 1995
Our Ref: B95-7701-MJR-001

Mesa Airlines, Inc.
2325 East 30th
Farmington, New Mexico
U.S.A. 87401

Attention: Mr. Larry Risley, Chairman

Gentlemen:

RE:  LETTER AGREEMENT NO. B95-7701-MJR-001  (RE: FUTURE TRADE-IN RIGHTS)

Reference is made to Purchase Agreement No. B95-7701-PA-299 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Airlines, Inc. (Mesa) for the sale of Twenty-Five
(25) DHC-8-200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

All terms used herein and in the Agreement and not defined herein, shall have
the same meanings as in the Agreement.

Future Trade-in Rights

Buyer will be entitled to trade-in any of its Aircraft against the acquisition
of any of BRAD's current products, including the de Havilland Dash-8 will be
entitled to trade-in any of its Aircraft against the acquisition of any of
BRAD's current products, including the de Havilland Dash-8 Series 400 aircraft
or Canadair CRJX aircraft, if either or both of such programs proceed. The
trade-in of Aircraft and the acquisition of any of BRAD's products shall be
subject to mutual agreement on terms and conditions prevailing at the time of
trade-in.

If the foregoing correctly sets forth your understanding of our agreement with
respect to the above matters, please indicate your acceptance and agreement
below.

<PAGE>   53

Yours truly,

Bombardier Regional Aircraft Division



- -------------------------------
Paul H. Francoeur,
Vice-President, Contracts



ACCEPTED AND AGREED TO:

this ...... day of March, 1995



Mesa Airlines, Inc.

By:
   ----------------------------------

Title:
      -------------------------------

<PAGE>   54

March 24, 1995
Our Ref: B95-7701-MJR-002


Attention:  Mr. Larry Risley
         Chairman,
         Mesa Airlines, Inc.
         2325 East 30th
         Farmington, New Mexico
         U.S.A. 87401.



Gentlemen,

RE:  LETTER AGREEMENT NO. B95-7701-MJR-002  (RE: OPTION AIRCRAFT)


In consideration of your agreement to purchase 25 DHC-8 Series 200 aircraft (the
"Firm Aircraft") under Purchase Agreement No. B-95-7701-PA-299 (the
"Agreement"), Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD"), is pleased to offer to Mesa Airlines, Inc.("Buyer") the
option to purchase Twenty Five (25) DHC-8 Series 200 aircraft (the "Option
Aircraft") on the following terms and conditions.

1.1      The Option Aircraft will be as described in Article 2 of the
         Agreement.

1.2      The Option Aircraft shall be in two (2) blocks, the first of thirteen
         (13) (the "First Option Aircraft Block") and the second of twelve (12)
         (the "Second Option Aircraft Block") respectively.




1.3      BRAD will deliver the Option Aircraft to Buyer during the following
         months:

<PAGE>   55
                                                                        Page 2.

<TABLE>
<CAPTION>
FIRST OPTION BLOCK                                    DELIVERY DATES
<S>                                                            <C>
First Option Aircraft
Second Option Aircraft
Third Option Aircraft                                          [CONFIDENTIAL
Fourth Option Aircraft
Fifth Option Aircraft
Sixth Option Aircraft
Seventh Option Aircraft                                        PORTION
Eighth Option Aircraft
Ninth Option Aircraft
Tenth Option Aircraft
Eleventh Option Aircraft
Twelfth Option Aircraft
Thirteenth Option Aircraft                                     DELETED]

<CAPTION>
SECOND OPTION BLOCK                                   DELIVERY DATE
<S>                                                            <C>
Fourteenth Option Aircraft
Fifteenth Option Aircraft
Sixteenth Option Aircraft                                      [CONFIDENTIAL
Seventeenth Option Aircraft
Eighteenth Option Aircraft
Nineteenth Option Aircraft                                     PORTION
Twentieth Option Aircraft
Twenty-First Option Aircraft
Twenty-Second Option Aircraft
Twenty-Third Option Aircraft
Twenty-Fourth Option Aircraft
Twenty-Fifth Option Aircraft                                   DELETED]
</TABLE>

1.4.1    The  base  price in  February  1,  1995  United  States  Dollars  of
         the  Option  Aircraft,  is         CONFIDENTIAL PORTION DELETED
                                         ---------------------------------------

1.4.2.   The price of Buyer selected  optional  features as described at
         Appendix IV of the Agreement is    CONFIDENTIAL PORTION DELETED
                                         ---------------------------------------

1.4.3.   These base prices are subject to escalation in accordance with the
         Economic Adjustment Formula set out in Appendix I of the Agreement.

         For Buyer's information, the estimated delivery prices of the Option
         Aircraft are set forth below:

<PAGE>   56
                                                                        Page 3.

<TABLE>
<CAPTION>
FIRST OPTION BLOCK                                    ESTIMATED DELIVERY 
                                                         PRICE
<S>                                                            <C>
First Option Aircraft
Second Option Aircraft
Third Option Aircraft                                          [CONFIDENTIAL
Fourth Option Aircraft
Fifth Option Aircraft
Sixth Option Aircraft
Seventh Option Aircraft                                        PORTION
Eighth Option Aircraft
Ninth Option Aircraft
Tenth Option Aircraft
Eleventh Option Aircraft
Twelfth Option Aircraft
Thirteenth Option Aircraft                                     DELETED]

<CAPTION>
SECOND OPTION BLOCK                                   ESTIMATED DELIVERY 
                                                         PRICE
<S>                                                            <C>
Fourteenth Option Aircraft
Fifteenth Option Aircraft
Sixteenth Option Aircraft                                      [CONFIDENTIAL
Seventeenth Option Aircraft
Eighteenth Option Aircraft
Nineteenth Option Aircraft
Twentieth Option Aircraft
Twenty-First Option Aircraft                                   PORTION
Twenty-Second Option Aircraft
Twenty-Third Option Aircraft
Twenty-Fourth Option Aircraft
Twenty-Fifth Option Aircraft                                   DELETED]
</TABLE>

1.5      The above prices exclude flyaway fuel, taxes and duties.

1.6      As consideration for this option, Buyer will pay to BRAD, upon exercise
         of each Option Aircraft Block , the non-refundable sum of CONFIDENTIAL
         PORTION DELETED for each Option Aircraft in such Option Aircraft Block,
         such non-refundable sum to be treated as a deposit against the price of
         the related Option Aircraft.

1.7      All dollar amounts in this Letter Agreement are in U.S. dollars.

<PAGE>   57
                                                                        Page 4.

1.8      To exercise its option to purchase the First Option block, Buyer shall
         notify BRAD in writing on or before the first day of the fifteenth
         (15th) month prior to the month of scheduled delivery of the First
         Option Aircraft. To exercise its option to purchase the Second Block of
         Option Aircraft, Buyer shall also notify BRAD in writing on or before
         the first day of the fifteenth (15th) month prior to the delivery of
         the Fourteenth Option Aircraft.

1.9      Buyer and BRAD will negotiate a definitive agreement for the purchase
         of each Option Aircraft block within thirty (30) days of notice of
         exercise of the respective Option Aircraft block. The definitive
         agreements for the Option Aircraft will be based on the terms of the
         Agreement, excluding the provisions of any letter agreements forming
         part of the Agreement, and will include additional provisions to be
         mutually agreed upon. If the definitive agreements are not signed by
         the end of the thirty (30) day period either party may, within ten (10)
         days of the end of such period, cancel the option for such Option
         Aircraft by written notice. Upon execution of such definitive
         agreements, the Option Aircraft so exercised shall become firm and the
         terms of payment per letter agreement B95-7701-MJR-004 shall become
         applicable to such Aircraft.

1.10     If Buyer fails to take delivery of and pay for any Firm Aircraft, BRAD
         may cancel this option and terminate any unperformed definitive
         agreements for the purchase of the Option Aircraft.

         If Buyer fails to exercise its option to purchase the First Option
         Aircraft Block , then the option to purchase the Second Optiona
         Aircraft Block is cancelled.

1.11     If Buyer does not exercise either option, if an option is canceled, or
         if BRAD terminates a definitive agreement under 1.9 or 1.10 above, BRAD
         will retain all payments received for both blocks of Option Aircraft.

1.12     The options in this Letter Agreement are not assignable to third
         parties without the written consent of BRAD.

Yours truly,

BOMBARDIER INC.

- ------------------------
Paul H. Francoeur,
Vice-President, Contracts

ACCEPTED AND AGREED TO 
this    day of March, 1995

Mesa Airlines, Inc.

By:
   ---------------------

Title: 
      ------------------



<PAGE>   58
Date: March 24, 1995
Our Ref:  B95-7701-MJR-003

Mesa Airlines, Inc.
2325 East 30th,
Farmington New Mexico
U.S.A. 87401

Attention: Mr. Larry Risley, Chairman

Gentlemen:

RE:  LETTER AGREEMENT NO. B95-7701-MJR-003 ([CONFIDENTIAL PORTION DELETED])

Reference is made to Purchase Agreement No. B95-7701-PA-299 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Airlines, Inc. ("Buyer") for the sale of twenty-five
(25) DHC-8- 200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

All terms used herein and in the Agreement and not defined herein, shall have
the same meanings as in the Agreement.

It is acknowledged that Buyer acquired a quantity of [CONFIDENTIAL PORTION
DELETED] with the purchase of [CONFIDENTIAL PORTION DELETED] and the assignment
of a lease of [CONFIDENTIAL PORTION DELETED] and the purchase of [CONFIDENTIAL
PORTION DELETED] and the assignment of a lease of [CONFIDENTIAL PORTION
DELETED].

BRAD agrees to [CONFIDENTIAL PORTION DELETED] Buyer [CONFIDENTIAL PORTION
DELETED] by Buyer as a result of its procurement and lease assignment as stated
above per the following conditions:

1)   [CONFIDENTIAL PORTION DELETED] must have complete traceability and
     certification documentation available.

2)   [CONFIDENTIAL PORTION DELETED] must be certified with FAA repair tags.

3)   Packaging should be in accordance with industry standards for the shipment
     of [CONFIDENTIAL PORTION DELETED].

4)   [CONFIDENTIAL PORTION DELETED]

5)   [CONFIDENTIAL PORTION DELETED]

6)   [CONFIDENTIAL PORTION DELETED]

7)   Transportation will be [CONFIDENTIAL PORTION DELETED]. [CONFIDENTIAL
     PORTION DELETED] will be responsible for transportation arrangements and
     charges.

8a)  Following an audit by BRAD of [CONFIDENTIAL PORTION DELETED] currently held
     by Buyer, Buyer will provide a listing of [CONFIDENTIAL PORTION DELETED]

8b)  Contemporaneously with the return of [CONFIDENTIAL PORTION DELETED], a
     further audit of [CONFIDENTIAL PORTION DELETED] then held by Buyer will be
     effected, and [CONFIDENTIAL PORTION DELETED] will supply a listing of
     [CONFIDENTIAL PORTION DELETED] in hard copy and on diskette.

                                       1
<PAGE>   59



9a)  BRAD will review the list mentioned in 8) above and within [CONFIDENTIAL
     PORTION DELETED] will provide [CONFIDENTIAL PORTION DELETED] in accordance
     with the provisions of 1) through 7) above. Delivery by [CONFIDENTIAL
     PORTION DELETED] and establishment of the [CONFIDENTIAL PORTION DELETED]
     will occur promptly after [CONFIDENTIAL PORTION DELETED].

9b)  Upon return of [CONFIDENTIAL PORTION DELETED], and upon commencing the
     operation by Buyer of [CONFIDENTIAL PORTION DELETED], the terms and
     conditions of Article 9a) above will also apply for the audit and
     [CONFIDENTIAL PORTION DELETED] in possession of Buyer at such time.

10)  Buyer and BRAD acknowledge that Buyer has [CONFIDENTIAL PORTION DELETED],
     and a number, to be identified, of [CONFIDENTIAL PORTION DELETED] specific
     to [CONFIDENTIAL PORTION DELETED]. BRAD will [CONFIDENTIAL PORTION
     DELETED].

11)  [CONFIDENTIAL PORTION DELETED] will be [CONFIDENTIAL PORTION DELETED] to be
     determined and which will also be determined at a later date.


The first of [CONFIDENTIAL PORTION DELETED] to be issued as payment for
[CONFIDENTIAL PORTION DELETED] will be in the amount of [CONFIDENTIAL PORTION
DELETED] which will be used as the additional deposit per letter agreement
B95-7701-MJR-004, and the second being the remainder which may be used by Buyer
to purchase [CONFIDENTIAL PORTION DELETED] directly from BRAD.

If the foregoing correctly sets forth your understanding of our agreement with
respect to the above matters, please indicate your acceptance and agreement
below.

Yours truly
Bombardier Regional Aircraft Division

- ------------------------
Paul H. Francoeur,
Vice-President, Contracts

ACCEPTED AND AGREED TO:
this ...... day of March, 1995

Mesa Airlines, Inc.

By:
       -----------------------------------
Title:
       -----------------------------------
 
                                       2


<PAGE>   60

Date: March 24, 1995
Our Ref:  B95-7701-MJR-004

Mesa Airlines, Inc.
2325 East 30th,
Farmington New Mexico
U.S.A. 87401

Attention: Mr. Larry Risley, Chairman

Gentlemen:
RE:  LETTER AGREEMENT NO. B95-7701-MJR-004   (RE: PAYMENT TERMS AND INITIAL
     PAYMENT)

Reference is made to Purchase Agreement No. B95-7701-PA-299 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Airlines, Inc. ("Buyer") for the sale of twenty-five
(25) DHC-8- 200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

All terms used herein and in the Agreement and not defined herein, shall have
the same meanings as in the Agreement.

The following provisions replace and supercede the existing provisions of
Article 5 in the above-mentioned Agreement with respect to Terms of payment and
Initial payment for the Aircraft.

1.   Terms of payment

     The terms of payment of the Aircraft are as follows:

          a.   Upon execution of the Agreement, Buyer shall make an initial
               payment of [CONFIDENTIAL PORTION DELETED]. Such initial payment
               shall be applied proportionately against the delivery of the last
               [CONFIDENTIAL PORTION DELETED]; and

          b.   Upon agreement as to the amount of the [CONFIDENTIAL PORTION
               DELETED] per Letter Agreement B95-7701-MJR-003, the first
               [CONFIDENTIAL PORTION DELETED] in the amount of [CONFIDENTIAL
               PORTION DELETED] will become an additional deposit and shall be
               applied proportionally against delivery of the [CONFIDENTIAL
               PORTION DELETED]; and

          c.   on delivery of each [CONFIDENTIAL PORTION DELETED] the balance of
               the [CONFIDENTIAL PORTION DELETED] for such [CONFIDENTIAL PORTION
               DELETED] less any applicable initial payment made in accordance
               with a. and b.

2.   Initial Payment

The initial payment per article 1a., above may be made [CONFIDENTIAL PORTION
DELETED]. It is understood that Buyer currently holds [CONFIDENTIAL PORTION
DELETED] as described in [CONFIDENTIAL PORTION DELETED],-and Buyer will
[CONFIDENTIAL PORTION DELETED] a sufficient amount of [CONFIDENTIAL PORTION
DELETED] as collateral required for a [CONFIDENTIAL PORTION DELETED] by a third
party.

It is understood that these [CONFIDENTIAL PORTION DELETED] are to be evaluated
by such third party, who will determine the amount of [CONFIDENTIAL PORTION
DELETED] required to constitute sufficient collateral for the [CONFIDENTIAL
PORTION DELETED] to BRAD [CONFIDENTIAL PORTION DELETED] to BRAD. Such
[CONFIDENTIAL PORTION DELETED] must be [CONFIDENTIAL PORTION DELETED], and must
not include any restrictions which may adversely affect the value of
[CONFIDENTIAL PORTION DELETED].

                                       1
<PAGE>   61

Buyer will be responsible for and will indemnify BRAD in respect of all
interest, fees, costs and other expenses relating to [CONFIDENTIAL PORTION
DELETED].

It is further understood that this transaction can only be acceptable to BRAD if
such transaction will be [CONFIDENTIAL PORTION DELETED] by third parties
[CONFIDENTIAL PORTION DELETED] BRAD.

If the foregoing correctly sets forth your understanding of our agreement with
respect to the above matters, please indicate your acceptance and agreement
below.

Yours truly

Bombardier Regional Aircraft Inc.

- -------------------------
Paul H. Francoeur
Vice-President, Contracts


ACCEPTED AND AGREED TO:

this          day of March, 1995
     --------

MESA AIRLINES, Inc.


By:
       -----------------------------------
Title:
       -----------------------------------

                                        2


<PAGE>   62

March 24, 1995

Mesa Airlines, Inc.
2325 East 30th Street
Farmington, New Mexico  87401

Attention:  Mr. Larry Risley, Chairman


Gentlemen:

Re:  Letter Agreement No. B95-7701-MJR-005

Reference is made to the Purchase Agreement No. B95-7701-PA-299 (the
"Agreement") between Bombardier, Inc., represented by its Bombardier Regional
Aircraft Division ("BRAD") and Mesa Airlines, Inc. ("Mesa" or the "Buyer") for
the sale of twenty-five (25) DHC- 8-200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by the Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters summarized below.

All terms used herein and in the Agreement and not defined herein, shall have
the same meaning as in the Agreement.

Lease financing of [CONFIDENTIAL PORTION DELETED] will be arranged by Mesa,
working in close coordination with and supported by [CONFIDENTIAL PORTION
DELETED] with [CONFIDENTIAL PORTION DELETED] to be underwritten by [CONFIDENTIAL
PORTION DELETED] as generally outlined below. Any information related to the
form and amount of any support which may be provided by [CONFIDENTIAL PORTION
DELETED] is to be treated as confidential and is not to be provided to any third
party without the express written consent of [CONFIDENTIAL PORTION DELETED] as
further set forth in [CONFIDENTIAL PORTION DELETED] confidentiality agreement.
It is [CONFIDENTIAL PORTION DELETED] responsibility to have such form executed
with any third party prior to disclosure of any such information and to provide
such form to [CONFIDENTIAL PORTION DELETED] for approval.

- - BRAD will make every effort to arrange for no more than [CONFIDENTIAL PORTION
DELETED] to close leases for the 25 aircraft. Closings may be multiple within
[CONFIDENTIAL PORTION DELETED]. If [CONFIDENTIAL PORTION DELETED] leases are not
in place as of each delivery date [CONFIDENTIAL PORTION DELETED] will be
provided by [CONFIDENTIAL PORTION DELETED].

- - [CONFIDENTIAL PORTION DELETED] shall provide in support of [CONFIDENTIAL
PORTION DELETED] arrangement of the leases a [CONFIDENTIAL PORTION DELETED] and
a [CONFIDENTIAL PORTION DELETED] (together the [CONFIDENTIAL PORTION DELETED]).

- - Both parties agree to make good faith efforts to allow [CONFIDENTIAL PORTION
DELETED] to achieve [CONFIDENTIAL PORTION DELETED] for this transaction. Any
benefits derived from [CONFIDENTIAL PORTION DELETED] in excess of what is
required to achieve the [CONFIDENTIAL PORTION DELETED] shall be for
[CONFIDENTIAL PORTION DELETED] account.

- - For purposes of determining the nature and degree of [CONFIDENTIAL PORTION
DELETED] to be provided by [CONFIDENTIAL PORTION DELETED], base-line economics
shall be established which provide the equivalent of an average [CONFIDENTIAL
PORTION DELETED] equal to [CONFIDENTIAL PORTION DELETED] under the Agreement,
assuming a [CONFIDENTIAL PORTION DELETED] and interest rates prevailing on
[CONFIDENTIAL PORTION DELETED] (subject to adjustment as described below) and
U.S. Federal tax laws in effect at [CONFIDENTIAL PORTION DELETED]. The
[CONFIDENTIAL PORTION DELETED] the continued existence of the bankruptcy
protection offered by Section 1110 of the U.S. Bankruptcy Code or its
substantial equivalent if amended. It is understood that [CONFIDENTIAL PORTION
DELETED] will not apply to each and every [CONFIDENTIAL PORTION DELETED]
individually, but shall be calculated on the total number of [CONFIDENTIAL
PORTION DELETED] in the agreement.

                                       1
<PAGE>   63

- - The benefit of [CONFIDENTIAL PORTION DELETED] for other than level
[CONFIDENTIAL PORTION DELETED], including but not limited to (a) [CONFIDENTIAL
PORTION DELETED] interim periods up to [CONFIDENTIAL PORTION DELETED] months,
(b) [CONFIDENTIAL PORTION DELETED] not to exceed [CONFIDENTIAL PORTION DELETED]
months, (c) [CONFIDENTIAL PORTION DELETED] rent structures, (d) [CONFIDENTIAL
PORTION DELETED] structures, and (e) an extension in the [CONFIDENTIAL PORTION
DELETED] up to [CONFIDENTIAL PORTION DELETED] years may be utilized by
[CONFIDENTIAL PORTION DELETED] to achieve the [CONFIDENTIAL PORTION DELETED] and
(f) availability of state income tax benefits. To the extent that the
[CONFIDENTIAL PORTION DELETED] may be achieved without use of the above
benefits, [CONFIDENTIAL PORTION DELETED]. In the event that [CONFIDENTIAL
PORTION DELETED] are paid on a schedule which provides for payments on the basis
of [CONFIDENTIAL PORTION DELETED], and the stipulated [CONFIDENTIAL PORTION
DELETED] which may be [CONFIDENTIAL PORTION DELETED] in part by Bombardier shall
not contain [CONFIDENTIAL PORTION DELETED] nor, regardless of the [CONFIDENTIAL
PORTION DELETED] between monthly and semi-annually, shall the [CONFIDENTIAL
PORTION DELETED] amounts contain any other amounts not contained in the
[CONFIDENTIAL PORTION DELETED] schedules.

- - [CONFIDENTIAL PORTION DELETED] recognizes [CONFIDENTIAL PORTION DELETED]
desire to access [CONFIDENTIAL PORTION DELETED] and therefor [CONFIDENTIAL
PORTION DELETED] will use good faith efforts to obtain [CONFIDENTIAL PORTION
DELETED] for this transaction. Any fees for such [CONFIDENTIAL PORTION DELETED]
are for [CONFIDENTIAL PORTION DELETED] account. [CONFIDENTIAL PORTION DELETED]
will have the right to select [CONFIDENTIAL PORTION DELETED] if available. If
[CONFIDENTIAL PORTION DELETED], [CONFIDENTIAL PORTION DELETED] will have the
right to enter into one or more [CONFIDENTIAL PORTION DELETED], cost of which is
for [CONFIDENTIAL PORTION DELETED] account. [CONFIDENTIAL PORTION DELETED] costs
for [CONFIDENTIAL PORTION DELETED].

- - If [CONFIDENTIAL PORTION DELETED] determines, in consultation with
[CONFIDENTIAL PORTION DELETED], that the requisite [CONFIDENTIAL PORTION
DELETED] will not be achieved in the [CONFIDENTIAL PORTION DELETED] on the basis
of [CONFIDENTIAL PORTION DELETED] and [CONFIDENTIAL PORTION DELETED] will
provide or cause to be provided (but not limited to) any of the following as it
may determine: (a) Increased [CONFIDENTIAL PORTION DELETED]; (b) [CONFIDENTIAL
PORTION DELETED] agreements; (c) [CONFIDENTIAL PORTION DELETED] provided by
[CONFIDENTIAL PORTION DELETED] for [CONFIDENTIAL PORTION DELETED] under the
leases; (d) [CONFIDENTIAL PORTION DELETED] of the [CONFIDENTIAL PORTION DELETED]
payable by [CONFIDENTIAL PORTION DELETED] , (e) direct [CONFIDENTIAL PORTION
DELETED] provided or [CONFIDENTIAL PORTION DELETED] by [CONFIDENTIAL PORTION
DELETED], or any combination of the foregoing, as may be required to achieve
[CONFIDENTIAL PORTION DELETED].

- - If [CONFIDENTIAL PORTION DELETED] is unable to arrange [CONFIDENTIAL PORTION
DELETED] as described above with [CONFIDENTIAL PORTION DELETED] provided by
[CONFIDENTIAL PORTION DELETED], [CONFIDENTIAL PORTION DELETED] will become
responsible for arranging [CONFIDENTIAL PORTION DELETED] as described above. If
[CONFIDENTIAL PORTION DELETED], for whatever reason, is unable to arrange such
[CONFIDENTIAL PORTION DELETED], including [CONFIDENTIAL PORTION DELETED],
[CONFIDENTIAL PORTION DELETED] will have no obligation to accept the affected
[CONFIDENTIAL PORTION DELETED] and there will be no cost to [CONFIDENTIAL
PORTION DELETED] with regard to such non-acceptance.

- - [CONFIDENTIAL PORTION DELETED] will have the option to purchase [CONFIDENTIAL
PORTION DELETED] on the [CONFIDENTIAL PORTION DELETED] anniversary of the
relevant [CONFIDENTIAL PORTION DELETED] at the then-applicable [CONFIDENTIAL
PORTION DELETED] plus [CONFIDENTIAL PORTION DELETED] if any.

- - The [CONFIDENTIAL PORTION DELETED] will reflect the right, if practical, of
[CONFIDENTIAL PORTION DELETED] to use each [CONFIDENTIAL PORTION DELETED],
provided that, if required by the relevant [CONFIDENTIAL PORTION DELETED], for
it's own account, shall indemnify any loss of such [CONFIDENTIAL PORTION
DELETED] to the extent resulting from such usage and the consequent allocation
to [CONFIDENTIAL PORTION DELETED] of more than [CONFIDENTIAL PORTION DELETED] of
[CONFIDENTIAL PORTION DELETED] from the [CONFIDENTIAL PORTION DELETED]
transactions to which such [CONFIDENTIAL PORTION DELETED] is a party in any of
the [CONFIDENTIAL PORTION DELETED] years commencing with [CONFIDENTIAL PORTION
DELETED] that includes the relevant [CONFIDENTIAL PORTION DELETED], provided
that the resulting [CONFIDENTIAL PORTION DELETED] is not increased above the
[CONFIDENTIAL PORTION DELETED] as a result of such [CONFIDENTIAL PORTION
DELETED].

                                        2


<PAGE>   64

- - The capital cost of the [CONFIDENTIAL PORTION DELETED] for purposes of
determining [CONFIDENTIAL PORTION DELETED] shall include transaction fees and
expenses in the amount of [CONFIDENTIAL PORTION DELETED] of [CONFIDENTIAL
PORTION DELETED], including counsel's fees for [CONFIDENTIAL PORTION DELETED]
normal for [CONFIDENTIAL PORTION DELETED] and any other direct transaction
costs, including the [CONFIDENTIAL PORTION DELETED] as described below. It is
expected that each of such fees and expenses [CONFIDENTIAL PORTION DELETED] and
[CONFIDENTIAL PORTION DELETED] and detailed billing of such services to be
provided to [CONFIDENTIAL PORTION DELETED]. Any expenses in excess of
[CONFIDENTIAL PORTION DELETED] of [CONFIDENTIAL PORTION DELETED] cost will be
paid by [CONFIDENTIAL PORTION DELETED].

- - Advisory fees of either party, if any, will be paid separately by each party.
These fees, if either party chooses to incur them, are not to be included in the
[CONFIDENTIAL PORTION DELETED].

- - An adjustment to the [CONFIDENTIAL PORTION DELETED] applicable to actual
[CONFIDENTIAL PORTION DELETED] will be determined as follows: An "Auditor", as
agreed to by [CONFIDENTIAL PORTION DELETED] and [CONFIDENTIAL PORTION DELETED],
will calculate the [CONFIDENTIAL PORTION DELETED] as previously described for
each [CONFIDENTIAL PORTION DELETED] (the "[CONFIDENTIAL PORTION DELETED]") such
that the [CONFIDENTIAL PORTION DELETED] for all scheduled [CONFIDENTIAL PORTION
DELETED] shall not exceed the average equivalent [CONFIDENTIAL PORTION DELETED]
of the [CONFIDENTIAL PORTION DELETED] and the [CONFIDENTIAL PORTION DELETED] and
[CONFIDENTIAL PORTION DELETED] for each [CONFIDENTIAL PORTION DELETED] remains
constant. This calculation will establish the [CONFIDENTIAL PORTION DELETED]
(utilizing the [CONFIDENTIAL PORTION DELETED]) for [CONFIDENTIAL PORTION
DELETED] (the "[CONFIDENTIAL PORTION DELETED]") based on a [CONFIDENTIAL PORTION
DELETED], a [CONFIDENTIAL PORTION DELETED], a [CONFIDENTIAL PORTION DELETED]
U.S. Federal income tax rate, and [CONFIDENTIAL PORTION DELETED] total
transaction expenses. The "[CONFIDENTIAL PORTION DELETED]" will [CONFIDENTIAL
PORTION DELETED] on the U.S. Treasury Note having [CONFIDENTIAL PORTION DELETED]
the average [CONFIDENTIAL PORTION DELETED], plus the [CONFIDENTIAL PORTION
DELETED] to be agreed upon.

Prior to [CONFIDENTIAL PORTION DELETED] closing date, adjustments to the
equivalent [CONFIDENTIAL PORTION DELETED] shall be made to reflect the
following:

1)   The impact of the change in the [CONFIDENTIAL PORTION DELETED] will be
calculated and converted into an increase or decrease in the [CONFIDENTIAL
PORTION DELETED].

2)   Changes in [CONFIDENTIAL PORTION DELETED] between the [CONFIDENTIAL PORTION
DELETED] and the time of the pricing of [CONFIDENTIAL PORTION DELETED] for each
[CONFIDENTIAL PORTION DELETED]. The [CONFIDENTIAL PORTION DELETED] shall state
the assumed [CONFIDENTIAL PORTION DELETED] on the basis that [CONFIDENTIAL
PORTION DELETED], the [CONFIDENTIAL PORTION DELETED] would be based on a
[CONFIDENTIAL PORTION DELETED] of [CONFIDENTIAL PORTION DELETED] and a guarantee
of [CONFIDENTIAL PORTION DELETED] (i.e. [CONFIDENTIAL PORTION DELETED] guarantee
of [CONFIDENTIAL PORTION DELETED]). Changes in the base [CONFIDENTIAL PORTION
DELETED] will be tied to the [CONFIDENTIAL PORTION DELETED] of the [CONFIDENTIAL
PORTION DELETED], using a [CONFIDENTIAL PORTION DELETED] U.S. Federal income tax
rate (and further shall give recognition to [CONFIDENTIAL PORTION DELETED] in
the [CONFIDENTIAL PORTION DELETED]). The [CONFIDENTIAL PORTION DELETED] are to
be expressed as a percentage of [CONFIDENTIAL PORTION DELETED], as would be
necessary to achieve the [CONFIDENTIAL PORTION DELETED] equivalent [CONFIDENTIAL
PORTION DELETED] factors.

All of the above changes shall be measured against the [CONFIDENTIAL PORTION
DELETED] as of [CONFIDENTIAL PORTION DELETED] and U.S. Federal income tax laws
in effect on [CONFIDENTIAL PORTION DELETED].

[CONFIDENTIAL PORTION DELETED] obligations under this letter and the
[CONFIDENTIAL PORTION DELETED] will be conditioned upon there having been no
material adverse change in [CONFIDENTIAL PORTION DELETED], defined for this
purpose to mean the inability of [CONFIDENTIAL PORTION DELETED] to meet its
[CONFIDENTIAL PORTION DELETED] (ratios to be determined).

                                        3


<PAGE>   65

If the foregoing is acceptable to you, please so indicate below.

Yours truly,

BOMBARDIER REGIONAL AIRCRAFT DIVISION


- ----------------------------
Walter A. Galloway
Director of Contracts
Dash 8 Aircraft


Accepted and agreed to:
Mesa Airlines, Inc.

By:
   -------------------------
   Larry L. Risley
   Chief Executive Officer

                                        4


<PAGE>   66

Date: March 24, 1995
Our Ref: B95-7701-MJR-006

Mesa Airlines, Inc.
2325 East 30th
Farmington, New Mexico
U.S.A. 87401

Attention: Mr. Larry Risley, Chairman

Gentlemen:

RE:  LETTER AGREEMENT NO. B95-7701-MJR-006  (RE: SPARE PARTS SUPPORT PROGRAM)

Reference is made to Purchase Agreement No. B95-7701-PA-299 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Airlines, Inc. (Mesa) for the sale of Twenty-Five
(25) DHC-8- 200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

All terms used herein and in the Agreement and not defined herein, shall have
the same meanings as in the Agreement.

                                   FLEX PARTS

                          SPARE PARTS SUPPORT AGREEMENT

TABLE OF CONTENTS
- -----------------

ARTICLES
- --------

1        Definitions
2        Scope of the Plan
3        Aircraft Operations/Maintenance
4        Price
5        Payment Terms
6        Term of the Agreement
7        Facilities
8        Title - Risk of Loss
9        Excusable Delay
10       Warranty
11       Patent Infringement
12       [CONFIDENTIAL PORTION DELETED]
13       Notices
14       Laws
15       Taxes
16       Insurance
17       Confidentiality
18       Assignment
19       Liens
20       Waiver
Appendices

                                       1
<PAGE>   67

ARTICLE 1
DEFINITIONS

The following words and expressions when used in the present letter agreement
(Spares Parts Support Agreement), shall have the meaning given to them below.

1.1
ABUSE

a)   The Failure by the Buyer to perform the proper Maintenance, Repair, or 
Modification of any component as required by any applicable manuals, Bulletins,
Publications and/or written instructions, including without limitation BRAD
Maintenance, repair and Overhaul manuals, written instructions, and any
appropriate Airworthiness Authorities requirements and/or Airworthiness
Directives; or

b)   any use, operation, testing or storage of any Component not in accordance 
with accepted aircraft operation, maintenance practice or applicable manuals,
bulletins, guidelines, specifications, publications and/or written instructions;
or

c)   Any, neglect, misuse, degradation or wrongful act or omission, unauthorized
repair or modification adversely affecting any component; or

d)   Any accident, impact or foreign object damage or unusual wear to any
component.

1.3
AIRCRAFT

The Aircraft as described in Article 2.1 of the Agreement.

1.4
ROTABLE

An item which can be economically repairable and can be restored to a servicable
condition. Normally these items are assemblies which include replaceable parts
but also include units without component parts which can be refurbished by
cleaning, refinishing, patching, etc.

1.5
EXPENDABLE

Items for which no authorized repair procedure exists, or for which the cost of
repair would not be economical or exceed the cost of replacement.

1.6
CONSUMABLE

Generally bulk-type materials such as lubricants, cements, compounds, paints,
chemicals, dyes, splices and patches called out in maintenance and repair
procedures for aircraft, engines, equipment and component end items.

1.7
DEHAVILLAND  CORPORATION

DeHavilland Corporation, (DHC) a US Corporation and a Subsidiary of DeHavilland
Inc., a Delaware Corporation, having a place of business at Taylor, Michigan,
USA.and represented by its Bombardier Regional Aircraft Division (BRAD)

                                        2


<PAGE>   68

1.8
INSURANCE SPARES

Items which are not expected to fail but which are stocked purely as a
precaution by the manufacturer or airline to preclude undue schedule
interruptions or economic hardship should the item require replacement. (e.g.
flaps, ailerons, elevator, doors etc.)

1.9
NO FAULT FOUND

The removal of any Component which is returned to the Program and/or to any
Vendor or Repair or Overhaul facility and which, after investigation by DHC
and/or the vendor, is found to be serviceable.

1.10
OVERHAUL

To make any component serviceable by disassembly, inspecting, replacing, or
repairing failed, damaged or worn parts of such a component including, where
necessary, by compliance with applicable Service Bulletins, if required for
certification, to achieve operating or design tolerances. An overhauled
component shall be certified to have zero time for purpose of designated service
life, unless otherwise specified.

1.11
PROGRAM

The Spare Parts Support Program also otherwise known as FlexParts, offered to
the Buyer for its Aircraft as set forth and according to the terms of the
present Spares Part Support Agreement.

1.12
REPAIR

To make any component serviceable by disassembly, inspecting, replacing, or
repairing failed or damaged parts of such a component including where necessary,
compliance with applicable service bulletins, if required for certification.

1.13
SERVICEABLE COMPONENT OR SERVICEABLE

Any component that is in a serviceable condition as defined by the limits,
tolerances or allowances set forth in any applicable manual, bulletins,
guidelines, specifications, publications and/or written instructions, and/or
that is in compliance with all appropriate Airworthiness Authorities
requirements and/or Airworthiness directives.

1.14
UNSERVICEABLE COMPONENT OR UNSERVICEABLE

Any component that is not in a serviceable condition as defined by the limits,
tolerances or allowances set forth in any applicable manual, bulletins,
guidelines, specifications, publications and/or written instructions, and/or
that is not in compliance with all appropriate Airworthiness Authorities
requirements and/or Airworthiness directives.

1.15
STRUCTURE OR STRUCTURAL PARTS

Any self-contained part or any combination of parts, sub-assemblies or units
which performs a function of carrying loads or supporting equipment or
maintaining aerodynamic configuration or control or diverting airflow.

ARTICLE 2

SCOPE OF THE PLAN

DHC will provide provisioning spare parts support at Buyer's main base of
operation and one line station based upon the following assumptions and
comprising the following inclusions and/or exclusions:

2.1  ASSUMPTIONS
     - 25 Dash 8 Series 200 aircraft.
     - Aircraft delivered at a rate of 2 per month.

                                        3


<PAGE>   69

     - Minimum Annual Utilization will be 2700 Flight Hours per year.
     - Main Maintenance Base located at Grand Junction, Colorado, or such
       other location in the United States as may be mutually agreed between
       DHC and Buyer.
     - Line Station located at Denver, Colorado.

2.2  THE PROGRAM INCLUDES THE FOLLOWING COVERAGE:

     [CONFIDENTIAL PORTION DELETED] the Program spare parts inventory.

     [CONFIDENTIAL PORTION DELETED].

2.3  THE PROGRAM DOES NOT PROVIDE COVERAGE OF THE FOLLOWING:

     - [CONFIDENTIAL PORTION DELETED]

     - [CONFIDENTIAL PORTION DELETED]

     - [CONFIDENTIAL PORTION DELETED]

     - [CONFIDENTIAL PORTION DELETED]

     - [CONFIDENTIAL PORTION DELETED]

     - [CONFIDENTIAL PORTION DELETED]

     - [CONFIDENTIAL PORTION DELETED]

     - [CONFIDENTIAL PORTION DELETED]

     - [CONFIDENTIAL PORTION DELETED]

     - [CONFIDENTIAL PORTION DELETED]


     - Damages to the Program spare parts from foreign object damage, fuel, oil
and/or hydraulic system contamination, severe or unpredictable weather
conditions, Acts of God or any other similar causes, which are beyond the
reasonable control of and without fault or negligence of the Buyer while the
spare parts are under the care, custody and control of Buyer.
     - Any damages to Program spare parts as a result of any Abuse by the Buyer
or any third party, while such spare parts are under the care, custody and
control of Buyer.
     - Any costs incurred for any Program spare parts returned by the Buyer to
DHC that is subsequently determined to be [CONFIDENTIAL PORTION DELETED].

2.4  DISPOSITION OF REMOVED PARTS

[CONFIDENTIAL PORTION DELETED].


ARTICLE 3

AIRCRAFT OPERATIONS/MAINTENANCE

During the term of this Program, the Buyer shall operate and maintain its
Aircraft in accordance with the FAA approved Flight Manual, Operating Manual,
the applicable Maintenance and Repair Manuals, applicable Alert Service
Bulletins,

                                        4


<PAGE>   70

and any other written instructions issued by BRAD and its Vendors as amended
from time to time. The Buyer shall also comply with all the applicable
requirements of appropriate Airworthiness Authorities, and/or with generally
accepted practices currently followed in the commercial aviation industry.

BRAD and Buyer shall review BRAD recommended Service Bulletins and mutually
agree which will be incorporated. The Buyer is responsible for any damages or
costs caused by [CONFIDENTIAL PORTION DELETED].

ARTICLE 4

PRICE

The Price for services provided under the Program will be [CONFIDENTIAL PORTION
DELETED] subject to a minimum charge of [CONFIDENTIAL PORTION DELETED] Flight
Hours ) per year.

[CONFIDENTIAL PORTION DELETED].

All amounts are quoted in United States Dollars and are fixed, firm and not
subject to escalation, for the term of this agreement.

ARTICLE 5

PAYMENT TERMS

Within [CONFIDENTIAL PORTION DELETED] calendar days after the end of the
calendar month, Buyer shall complete a monthly status report and submit payment
to DHC per the following schedule:

     1) For aircraft delivered prior to the reporting month; payment to the
value of [CONFIDENTIAL PORTION DELETED] Flight Hours per aircraft.

     2) For aircraft delivered during the reporting month; payment to the value
of [CONFIDENTIAL PORTION DELETED] Flight Hours, prorated to the number of days
in the month after the delivery date.

Within [CONFIDENTIAL PORTION DELETED] calendar days after the end of the
calendar year, the Buyer shall provide DHC a detailed reconciliation of
[CONFIDENTIAL PORTION DELETED] hours. The Buyer shall pay for each hour in
excess of the minimum Flight Hour charge.

 To the extent that any particular Aircraft is out of service for more than
[CONFIDENTIAL PORTION DELETED] days due to damage arising from accident or
incident [CONFIDENTIAL PORTION DELETED].

If an Aircraft has been lost or damaged beyond economic repair then the average
for the purpose of minimum calculations will be computed based on a fleet
average including only the pro-rated portion of utilization of such lost or
damaged aircraft.

The program is based on a fleet of at [CONFIDENTIAL PORTION DELETED]. If the
fleet falls below [CONFIDENTIAL PORTION DELETED] aircraft as a result of loss or
damage beyond economic repair of Aircraft, BRAD shall advise Buyer of the
incremental effect on the price for the total services rendered under this
program and Buyer will agree to pay such increment.

The Buyer will maintain and make available to DHC, for auditing purposes, the
aircraft Log books and Historical Component records.

The Buyer shall [CONFIDENTIAL PORTION DELETED], from the date that any payment
becomes due, up to and including the day prior to receipt of payment,
[CONFIDENTIAL PORTION DELETED] from time to time, calculated and compounded
monthly. DHC's right to receive [CONFIDENTIAL PORTION DELETED] is in addition to
any other right or remedy DHC has at law as a result of [CONFIDENTIAL PORTION
DELETED].

                                       5


<PAGE>   71

ARTICLE 6

TERM OF THE SPARES PARTS SUPPORT AGREEMENT

The Term of the Spares Part Support Agreement shall commence on the date of the
delivery of the first Aircraft and terminate [CONFIDENTIAL PORTION DELETED]
years after the date of delivery of the last Aircraft.

ARTICLE 7

FACILITIES

Buyer will provide to [CONFIDENTIAL PORTION DELETED], the use of warehouse space
at the Buyer's main base or at an off-site location, sufficient to safely store
the Program spare parts. The Stores will be separate from the Buyer's materials,
and shall be secure and lockable.

Buyer will provide to [CONFIDENTIAL PORTION DELETED], at the Buyer's main base,
[CONFIDENTIAL PORTION DELETED]. This office space shall be [CONFIDENTIAL PORTION
DELETED].

Buyer shall provide to [CONFIDENTIAL PORTION DELETED], access to Buyer's stores
system, with terminals if necessary.

Buyer shall provide [CONFIDENTIAL PORTION DELETED] as required.

Buyer shall provide access to a conveniently located photocopier at the Buyer
main base.

The Program facility shall be secured at all times. Buyer's personnel, suitably
approved by DHC, will have access per agreed upon procedures.

The Buyer shall obtain any necessary identification or access required for DHC's
Program personnel.

DHC will provide [CONFIDENTIAL PORTION DELETED] as required.

ARTICLE 8

TITLE - RISK OF LOSS

DHC will retain title to Program spare parts in the Program stores.

Title to and risk of loss or damage of Program spare parts shall pass to Buyer
upon issuance to Buyer from the Program stores.

Title to and risk of loss or damage of Program spare parts returned to DHC will
pass to DHC upon receipt of those parts into the Program stores.

ARTICLE 9

WARRANTY

[CONFIDENTIAL PORTION DELETED].

Article 5 of Letter Agreement B95-7701-MJR-009 (Disclaimer and Release) shall
apply to this Program.

ARTICLE 10
[CONFIDENTIAL PORTION DELETED]

                                       6


<PAGE>   72

10.1     [CONFIDENTIAL PORTION DELETED]

10.2     [CONFIDENTIAL PORTION DELETED]

ARTICLE 11

NOTICES

11.1     Any notice, request, approval, permission, consent or other
         communication ("Notice"), to be given or required under this Agreement
         shall be provided in writing, by registered mail, facsimile, courier,
         telegraphic or other electronic communication providing reasonable
         proof of transmission, except that no notice shall be sent by mail if
         disruption of postal service exists or is threatened either in the
         country of origin or of destination, by the party giving the Notice and
         shall be addressed as follows:

         (a)   Notice to BRAD shall be addressed to:

                             Bombardier Inc.
                             Bombardier Regional Aircraft Division
                             Garratt Boulevard
                             Downsview, Ontario
                             Canada M3K 1Y5
                             Attention:  Walter A. Galloway, Manager, Contracts

                             Telex:             06-22128
                             Facsimile:         (416) 375-4533

         (b)   Notice to Buyer shall be addressed to:

                             Attention: Mr. Larry Risley, Chairman
                             Mesa Airlines, Inc.
                             2325 East 30th
                             Farmington, New Mexico

                             U.S.A. 87401

                                      Facsimile: 505-326-4485

11.2     Notice given in accordance with Article 11.1 shall be deemed
         sufficiently given to and received by the addressees:

         (a)   if delivered by hand, on the day when the same shall have been so
         delivered; or

         (b)   if mailed or sent by courier on the day indicated on the
         corresponding acknowledgment of receipt; or

         (c) if sent by telex or facsimile on the day indicated by the
         acknowledgment or the answer back of the receiver in provable form.

ARTICLE 12

TAXES

The price of the Program does not include any sales, use, personal property,
excise, consumption, gross receipts, franchise, value added, luxury or other
taxes, fees, duties or assessments which may be levied, assessed or imposed by

                                       7


<PAGE>   73

any governmental authority or agency on or as a result of any sales transaction,
to the extent imposed by law on Buyer or DHC, or any affiliate of DHC. Should
such tax, duty or assessment be applicable, the Program price will be adjusted
accordingly.

ARTICLE 13

INSURANCE

During the term of this agreement, Buyer shall;

    a) [CONFIDENTIAL PORTION DELETED] issued to Buyer.

    b) Procure and maintain, at Buyer's own cost and expense, insurance
covering the [CONFIDENTIAL PORTION DELETED] of the Program spares located in the
Buyer's facility, where DeHavilland Corporation shall be included as loss payee.
Buyer will provide a certificate of insurance evidencing such coverage.
[CONFIDENTIAL PORTION DELETED]. The insurance policy shall not be [CONFIDENTIAL
PORTION DELETED], having been given to DHC by Buyer.

ARTICLE 14

CONFIDENTIALITY

Buyer shall not disclose the signing nor the terms of this agreement without the
prior written consent of DHC.

ARTICLE 15

ASSIGNMENT

15.1     Either party may assign, sell, transfer or dispose of (in whole or in
         part) any of its rights and obligations hereunder to a wholly owned
         subsidiary or affiliate provided that there is no increase to the
         liability and/or responsibility of the non-assigning party and that the
         assigning party remains jointly and severally liable with any assignee
         for the performance of Buyer's obligation under the present Spares
         Parts Support Agreement.

15.2     Except as provided in Article 15.1, Buyer shall not assign, sell,
         transfer or dispose of (in whole or in part) any of its rights or
         obligations hereunder without BRAD's prior written consent. In the
         event of such assignment, sale, transfer or disposition Buyer shall
         remain jointly and severally liable with any assignee for the
         performance of all and any of Buyer's obligations under this Agreement
         and BRAD reserves the right to amend one or more of the terms and
         conditions of this Agreement.

15.3     BRAD may assign any of its rights to receive money hereunder without
         the prior consent of Buyer.


ARTICLE 16

LIENS

Buyer shall not directly or indirectly create, assume, incur or suffer to exist
any lien, charge, or encumbrance on or with respect to the Program spare parts,
DHC's title thereto or any interest of DHC under this agreement.

Buyer shall promptly, at its own expense, take such action as may be necessary
to promptly discharge any lien, charge or encumbrance except liens created
solely by, through or under DHC.

                                       8


<PAGE>   74

ARTICLE 17

WAIVER

The failure of either DHC or Buyer to enforce at any time any of the provisions
of this agreement, or to require at any time performance by the other, of any of
its provisions, will not be construed as a present or future waiver of such
provisions, nor in any way affect the validity of this agreement or any part of
it, or the right of the other to enforce each and every such provision,
condition or requirement of this agreement does not constitute a waiver or any
future obligation to comply with such provision, condition or requirement and
will not be effective unless in writing and signed by duly authorized
representatives of both parties.

ARTICLE 18

[CONFIDENTIAL PORTION DELETED].

If the foregoing correctly sets forth your understanding of our agreement with
respect to the above matters, please indicate your acceptance and agreement
below.


Yours truly,

Bombardier Regional Aircraft Division

- -------------------------------
Paul H. Francoeur,
Vice-President, Contracts

ACCEPTED AND AGREED TO:

this ______ day of March, 1995

Mesa Airlines, Inc.

By:
       -----------------------------------
Title:
       -----------------------------------

                                       9



<PAGE>   75

                          APPENDIX A

Aircraft Covered (Delivery Schedule and Serial Number)
         (to be determined)

                                       10


<PAGE>   76

                          APPENDIX B

Monthly reporting - Invoice Form

                                       11


<PAGE>   77

March 24, 1995
Our Ref: B95-7701-MJR-007

Mesa Airlines, Inc.,
2325 East 30th,
Farmington, New Mexico.
U.S.A. 87401

Attention: Mr. Larry Risley, Chairman

Gentlemen,

RE: LETTER AGREEMENT NO. B95-7701-MJR-007  (RE: DIRECT MAINTENANCE LABOUR COST
GUARANTEE)

Reference is made to Purchase Agreement No. B95-7701-PA-299 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Airlines, Inc. ("Buyer") for the sale of twenty-five
(25) DHC-8 Series 200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

All terms used herein and in the Agreement not defined herein, shall have the
same meaning as in the Agreement.

Subject:  Airframe Direct Maintenance Labour Cost Guarantee

1.0      Intent

         1.1     The intent of the Airframe direct maintenance labour cost
                 guarantee is to achieve the full potential of the
                 maintainability of the Aircraft through the joint efforts of
                 BRAD and Buyer. To that end, BRAD agrees to provide credits
                 under the terms and conditions hereof and Buyer agrees to
                 provide certain data described below.

         1.2     The "Airframe" shall mean the Aircraft excluding Power Plant
                 Parts, Buyer Furnished Equipment (BFE) and Ground Support
                 Equipment (GSE).

         1.3     Rotable and repairable parts are subject to the provisions of
                 the Spare Parts Support Program described in Letter Agreement
                 B95-7701-MJR-006.

2.0      Airframe Direct Maintenance Labour Cost Guarantee

         2.1     BRAD guarantees that for the fleet of Aircraft operated by
                 Buyer during the term of this Agreement, the cumulative average
                 Airframe direct maintenance labour cost per Flight hour shall
                 not exceed a constant [CONFIDENTIAL PORTION DELETED] average of
                 [CONFIDENTIAL PORTION DELETED] over the term of this guarantee
                 subject to the following terms and conditions:

                 2.1.1     The term of this Letter Agreement shall commence on
                           the first day of the month following delivery of the
                           first Aircraft and shall end [CONFIDENTIAL PORTION
                           DELETED] after delivery of the Twenty-Fifth Aircraft;
                           and

                 2.1.2     Appropriate [CONFIDENTIAL PORTION DELETED] shall be
                           made in [CONFIDENTIAL PORTION DELETED] per
                           [CONFIDENTIAL PORTION DELETED] for the following:

                 a)        [CONFIDENTIAL PORTION DELETED] costs resulting from
                           [CONFIDENTIAL PORTION DELETED] written agreement, or
                           because recommended [CONFIDENTIAL PORTION DELETED]
                           which cause a reduction in [CONFIDENTIAL PORTION
                           DELETED] have not been


                                       1
<PAGE>   78

                           incorporated, provided [CONFIDENTIAL PORTION DELETED]
                           has had sufficient time to incorporate said
                           [CONFIDENTIAL PORTION DELETED] consistent with
                           [CONFIDENTIAL PORTION DELETED]. [CONFIDENTIAL PORTION
                           DELETED] shall not make [CONFIDENTIAL PORTION
                           DELETED] has demonstrated that such [CONFIDENTIAL
                           PORTION DELETED]. In the event of a disagreement
                           between [CONFIDENTIAL PORTION DELETED] and
                           [CONFIDENTIAL PORTION DELETED] as to the
                           [CONFIDENTIAL PORTION DELETED] change proposed by
                           [CONFIDENTIAL PORTION DELETED], [CONFIDENTIAL PORTION
                           DELETED] will explain its [CONFIDENTIAL PORTION
                           DELETED] used to evaluate the implementation of such
                           [CONFIDENTIAL PORTION DELETED] change;

                 b)        [CONFIDENTIAL PORTION DELETED] costs incurred to
                           [CONFIDENTIAL PORTION DELETED] in maintaining the
                           [CONFIDENTIAL PORTION DELETED], or for [CONFIDENTIAL
                           PORTION DELETED], which may be [CONFIDENTIAL PORTION
                           DELETED] by [CONFIDENTIAL PORTION DELETED] (except
                           for actions on [CONFIDENTIAL PORTION DELETED];

                 c)        [CONFIDENTIAL PORTION DELETED] that [CONFIDENTIAL
                           PORTION DELETED] or [CONFIDENTIAL PORTION DELETED]
                           have made that [CONFIDENTIAL PORTION DELETED]; and

                 d)       [CONFIDENTIAL PORTION DELETED] have not been
                          [CONFIDENTIAL PORTION DELETED] in accordance with
                          [CONFIDENTIAL PORTION DELETED]unless mutually agreed
                          to by Buyer and BRAD; and

         2.1.3.   The [CONFIDENTIAL PORTION DELETED] shall be broken down by
                  year for each of the years in the term of this guarantee. This
                  shall be accomplished three (3) months prior to the delivery
                  date of the first Aircraft and shall, over the term of the
                  Guarantee average the [CONFIDENTIAL PORTION DELETED].

         2.2      Appropriate adjustment shall be made to cater to the "C"
                  Checks where such "C" checks are to be carved out and averaged
                  seperately and scheduled within [CONFIDENTIAL PORTION DELETED]
                  of the scheduled intervals. The "C" Checks [CONFIDENTIAL
                  PORTION DELETED] are part of the [CONFIDENTIAL PORTION
                  DELETED] in paragraph [CONFIDENTIAL PORTION DELETED].

3.0      Calculation of Cost

         3.1      Airframe Direct Maintenance Labour  ("ADML")

                  The ADML man-hours shall be defined as the annual man-hours in
                  Buyer's cost allocation system assigned to collect
                  [CONFIDENTIAL PORTION DELETED], without burden, expended in
                  direct [CONFIDENTIAL PORTION DELETED] including all
                  [CONFIDENTIAL PORTION DELETED] for all [CONFIDENTIAL PORTION
                  DELETED] as well as [CONFIDENTIAL PORTION DELETED].

                  Notwithstanding [CONFIDENTIAL PORTION DELETED] all elements of
                  [CONFIDENTIAL PORTION DELETED] such as [CONFIDENTIAL PORTION
                  DELETED] Shall be excluded from the calculation of
                  [CONFIDENTIAL PORTION DELETED]; and

         3.2      Hourly Airframe Direct Maintenance Labour Cost ("ADMLC")

                  The following formula shall be used to calculate the annual
                  hourly ADMLC:

                  [CONFIDENTIAL PORTION DELETED]

                  [CONFIDENTIAL PORTION DELETED]

                                       2


<PAGE>   79

                  [CONFIDENTIAL PORTION DELETED]

                  [CONFIDENTIAL PORTION DELETED]

                  [CONFIDENTIAL PORTION DELETED]

4.0      Credit Calculation

         4.1      The actual hourly Airframe Direct Maintenance Labour Cost
                  (ADMLC) shall be compared by BRAD against the ADMLCG on an
                  annual basis.

         4.2      If the ADMLC exceeds the ADMLCG Buyer will be [CONFIDENTIAL
                  PORTION DELETED] calculated in accordance with the following
                  formula.

                  [CONFIDENTIAL PORTION DELETED]

         4.3      If the ADMLC is less than the ADMLCG, [CONFIDENTIAL PORTION
                  DELETED] shall accrue a credit which shall be used as an
                  [CONFIDENTIAL PORTION DELETED] during the term of this
                  [CONFIDENTIAL PORTION DELETED] in accordance with the
                  following formula:

                  [CONFIDENTIAL PORTION DELETED]

                  ADMLC, ADMLCG and T shall have the same meaning as used in
                  Article 4.2 above.

 5.0     [CONFIDENTIAL PORTION DELETED]Payment

         5.1      At the end of each period of one year and at the end of the
                  term of this Letter Agreement, Buyer's compensation
                  [CONFIDENTIAL PORTION DELETED] under Article 4.2 above, and
                  [CONFIDENTIAL PORTION DELETED] in Article 4.3 above, shall be
                  compared by the following formula to determine if a
                  [CONFIDENTIAL PORTION DELETED].

                  [CONFIDENTIAL PORTION DELETED]

                  Qb and Qs shall have the same meanings as used in Article 4.2
                  and Article 4.3 above.

         5.2      If the[CONFIDENTIAL PORTION DELETED] is positive,
                  [CONFIDENTIAL PORTION DELETED] shall [CONFIDENTIAL PORTION
                  DELETED], for the amount determined under the calculation for
                  the respective period, and up to a maximum [CONFIDENTIAL
                  PORTION DELETED] for the term of this Letter Agreement.

         5.3      If the [CONFIDENTIAL PORTION DELETED] as determined under the
                  caluculation for the respective year period, then such
                  [CONFIDENTIAL PORTION DELETED] shall be accumulated and
                  applied to each successive [CONFIDENTIAL PORTION DELETED].

6.0      Every [CONFIDENTIAL PORTION DELETED], [CONFIDENTIAL PORTION DELETED]
shall meet to review the [CONFIDENTIAL PORTION DELETED] trend and if it is
determined that such trend is [CONFIDENTIAL PORTION DELETED], then [CONFIDENTIAL
PORTION DELETED] shall cooperate to identify and implement remedial actions to
correct the situation.

7.0      Audit

                  Upon five (5) business days prior written notification by BRAD
         to Buyer and at BRAD's expense, BRAD shall have the right during normal
         business hours to audit all charges reported under this Letter
         Agreement, Buyer's applicable maintenance practices and procedures, and
         applicable Aircraft records, where

                                       3


<PAGE>   80

         normally and customarily maintained, relative to maintenance, Service
         Bulletin incorporation and modification of the Aircraft. Such audit
         shall not interfere with the conduct of business by Buyer nor shall
         Buyer be required to undertake or incur additional liability or
         obligations with respect to the audit.

8.0      Reporting

         8.1      BRAD shall provide a quarterly report to Buyer on the status
                  of the Airframe Direct Maintenance Labour Cost based on data
                  submitted by Buyer and approved by BRAD. Failure of
                  [CONFIDENTIAL PORTION DELETED] to provide the [CONFIDENTIAL
                  PORTION DELETED], in spite of [CONFIDENTIAL PORTION DELETED]
                  thereof, shall [CONFIDENTIAL PORTION DELETED].

         8.2      The ADMLCG was based upon the assumptions outlined in the
                  Appendix to this Letter Agreement. Any deviation from the
                  assumptions outlined in the Appendix shall cause a
                  modification in the ADMCG by BRAD.

9.0      [CONFIDENTIAL PORTION DELETED]

         9.1      BUYER AND BRAD STATE AND AGREE THAT THIS LETTER INCLUDING BUT
                  NOT LIMITED TO ARTICLE 8.1 ABOVE, HAS BEEN THE SUBJECT OF
                  DISCUSSION AND NEGOTIATION AND IS FULLY UNDERSTOOD BY THE
                  PARTIES HERETO AND THAT THE [CONFIDENTIAL PORTION DELETED] AND
                  THE OTHER MUTUAL AGREEMENTS OF THE PARTIES SET FORTH IN THE
                  AGREEMENT WERE ARRIVED AT IN CONSIDERATION OF THE PROVISIONS
                  CONTAINED IN THIS ARTICLE 8.2, ARTICLE 8.1 ABOVE AND THE OTHER
                  PROVISIONS OF THIS LETTER AGREEMENT.

If the foregoing correctly sets forth your understanding of our agreement with
respect to the above matters, please indicate your acceptance and agreement
below.

Yours truly

Bombardier Regional Aircraft Division


- -------------------------------
Paul H. Francoeur,
Vice-President, Contracts

ACCEPTED AND AGREED TO:
this ...... day of March, 1995

Mesa Airlines, Inc.

By:
       -----------------------------------
Title:
       -----------------------------------

                                       4


<PAGE>   81

                                  APPENDIX "A"

                          GUARANTEE VALUE ASSUMPTIONS

The following is a listing of all assumptions used to determine the ADMLCG per
flight hour. It is understood by the parties that these assumptions may change,
in which case the parties with mutual agreement will adjust the ADMLCG.

1.       All costs are based [CONFIDENTIAL PORTION DELETED].

2.       All costs are based on the [CONFIDENTIAL PORTION DELETED].

3.       All costs are [CONFIDENTIAL PORTION DELETED].

4.       [CONFIDENTIAL PORTION DELETED] in-house [CONFIDENTIAL PORTION DELETED]
         over the term of the ADMLCG.

5.       Annual average [CONFIDENTIAL PORTION DELETED] is not less than
         [CONFIDENTIAL PORTION DELETED] per year.

6.       [CONFIDENTIAL PORTION DELETED] average [CONFIDENTIAL PORTION DELETED]
         for the [CONFIDENTIAL PORTION DELETED] will be [CONFIDENTIAL PORTION
         DELETED] per departure.

7.       All costs are rounded to within the nearest whole U.S. dollar.

8.       [CONFIDENTIAL PORTION DELETED] are covered by the [CONFIDENTIAL PORTION
         DELETED].

9.       All costs relating to [CONFIDENTIAL PORTION DELETED] from this
         guarantee

10.      [CONFIDENTIAL PORTION DELETED] and other indirect materials such as
         [CONFIDENTIAL PORTION DELETED] from this guarantee.


                                       5


<PAGE>   82

March 24, 1995
Our Ref: B95-7701-MJR-008

Mesa Airlines, Inc.
2325 East 30th
Farmington, New Mexico
U.S.A. 87401

Attention: Mr. Larry Risley, Chairman

Gentlemen:

RE: LETTER AGREEMENT NO. B95-7701-MJR-008 (RE: AIRCRAFT SCHEDULE RELIABILITY
GUARANTEE)

Reference is made to Purchase Agreement No. B95-7701-PA-299 (the "Agreement")
between Bombardier, Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Airlines, Inc. ("Buyer") for the sale of twenty-five
(25) DHC-8-200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

All terms herein and in the Agreement and not defined herein shall have the same
meanings as in the Agreement.

                     AIRCRAFT SCHEDULE RELIABILITY GUARANTEE

Subject to the terms and conditions set forth in this Guarantee BRAD hereby
guarantees that the Achieved Aircraft Schedule Reliability for the Covered
Aircraft during any Reporting Period shall be [CONFIDENTIAL PORTION DELETED.]

(A) SCOPE

    (1)      COVERED AIRCRAFT

    The Aircraft Schedule Reliability Guarantee (hereinafter referred to as the
    "Guarantee") shall cover and be in effect for the Aircraft delivered to
    Buyer under this Agreement while operated on Buyer's routes during the
    Guarantee Term (hereinafter referred to as "Covered Aircraft").

             (2)    GUARANTEE TERM

                    The term of the Guarantee is [CONFIDENTIAL PORTION DELETED]
                    commencing on the first day of the month next succeeding the
                    month in which Buyer's first Aircraft enters into revenue
                    service (hereinafter referred to as "Guarantee Term").

                    Unless earlier terminated or suspended as provided herein,
                    all provisions of this Guarantee and BRAD's obligation
                    hereunder, shall terminate on the last day of the Guarantee
                    Term.

(B)          DEFINITIONS

             (1)    "Aircraft Schedule Reliability Target" shall mean the target
                     for the Covered Aircraft set forth in attachment A hereto.

             (2)     Each "Reporting Period" during the Guarantee Term shall be
                     the longer of (a) six (6) consecutive months or (b) the
                     number of full months required for all Covered Aircraft to
                     accumulate a minimum of 1,500 scheduled revenue departures.
                     The initial Reporting Period shall commence on the first
                     day of the Guarantee Term.

             (3)     A "Chargeable Aircraft Schedule Interruption" shall be
                     defined as an interruption, that results directly from
                     Verified Malfunction(s) of any Aircraft components,
                     equipment or parts,


                                       1
<PAGE>   83

                     excluding Engines and Engine related components specified
                     by the Engine manufacturer, installed on the Covered
                     Aircraft upon its delivery to Buyer, which results in a
                     cancellation, turn back, diverted landing or departure
                     delayed longer than fifteen (15) minutes.

             (4)     "Verified Malfunction(s)" shall mean failures, or
                     malfunctions of any component mentioned above during a
                     Reporting Period and where such failures or malfunctions
                     are the primary cause of an interruption and are
                     subsequently confirmed by inspection or shop test, if
                     applicable, in accordance with Buyer's FAA approved
                     maintenance programs.

                     [CONFIDENTIAL PORTION DELETED] to any reason listed below
                     shall not constitute a [CONFIDENTIAL PORTION DELETED]:

                     (a)       [CONFIDENTIAL PORTION DELETED];

                     (b)       Late return from [CONFIDENTIAL PORTION DELETED];

                     (c)       Failure to [CONFIDENTIAL PORTION DELETED] in
                               accordance with applicable [CONFIDENTIAL PORTION
                               DELETED], including [CONFIDENTIAL PORTION
                               DELETED];

                     (d)       Appropriate [CONFIDENTIAL PORTION DELETED], such
                               as but not limited to, [CONFIDENTIAL PORTION
                               DELETED];

                     (e)       [CONFIDENTIAL PORTION DELETED] caused by
                               [CONFIDENTIAL PORTION DELETED] such as but not
                               limited to damage by [CONFIDENTIAL PORTION
                               DELETED];

                     (f)       A [CONFIDENTIAL PORTION DELETED] caused by an
                               [CONFIDENTIAL PORTION DELETED];

                     (g)       Failure to utilize [CONFIDENTIAL PORTION DELETED]
                               for the [CONFIDENTIAL PORTION DELETED] or
                               [CONFIDENTIAL PORTION DELETED] at the earliest
                               practical opportunity, consistent with
                               [CONFIDENTIAL PORTION DELETED], any item which,
                               as permitted by such [CONFIDENTIAL PORTION
                               DELETED];

                     (h)       [CONFIDENTIAL PORTION DELETED] Equipment;

                     (i)       (A)      [CONFIDENTIAL PORTION DELETED] , except
                                        when [CONFIDENTIAL PORTION DELETED];

                               (B)      Normal [CONFIDENTIAL PORTION DELETED].

                               (j)      Any other [CONFIDENTIAL PORTION DELETED]
                                        which cannot fairly be attributed to
                                        [CONFIDENTIAL PORTION DELETED] as
                                        defined herein;

                               (k)      Adverse effect of [CONFIDENTIAL PORTION
                                        DELETED].

                     If the substitution of [CONFIDENTIAL PORTION DELETED] for
                     any [CONFIDENTIAL PORTION DELETED] allows the [CONFIDENTIAL
                     PORTION DELETED] for which such [CONFIDENTIAL PORTION
                     DELETED] was scheduled to proceed without a [CONFIDENTIAL
                     PORTION DELETED] , then no [CONFIDENTIAL PORTION DELETED]
                     shall be deemed to have occurred. When a [CONFIDENTIAL
                     PORTION DELETED] occurs as a result of a [CONFIDENTIAL
                     PORTION DELETED] shall be charged against the [CONFIDENTIAL
                     PORTION DELETED] for which it was [CONFIDENTIAL PORTION
                     DELETED] .

                     [CONFIDENTIAL PORTION DELETED].

                     With regard to [CONFIDENTIAL PORTION DELETED] which affects
                     more than [CONFIDENTIAL PORTION DELETED] shall count as
                     [CONFIDENTIAL PORTION DELETED] unless an additional


                                       2


<PAGE>   84

                     [CONFIDENTIAL PORTION DELETED] which is separate and
                     distinct from and unrelated to the [CONFIDENTIAL PORTION
                     DELETED], for a subsequent [CONFIDENTIAL PORTION DELETED].

             (5)     "Scheduled Revenue Departure" with respect to a Covered
                     Aircraft, shall be any scheduled departure of such Covered
                     Aircraft for a scheduled revenue flight segment, and any
                     one-segment canceled revenue flights.

                     [CONFIDENTIAL PORTION DELETED]

             (6)     The "Achieved Aircraft Schedule Reliability" for a Covered
                     Aircraft shall be calculated and expressed as a percentage
                     by use of the following formula:

                     [CONFIDENTIAL PORTION DELETED]

                     Any rounding, as required under this Guarantee, in order to
                     compare the Achieved Aircraft Schedule Reliability with the
                     Aircraft Schedule Reliability Targets, shall be
                     accomplished as follows: if the first digit of the portion
                     to be dropped from the number to be rounded is five or
                     greater, the preceding digit shall be raised to the next
                     higher number.

             (7)     A "Deficiency" occurs when the Achieved Schedule
                     Reliability during any Reporting Period is less than the
                     Aircraft Scheduled Reliability Target for such Reporting
                     Period, all as may be adjusted pursuant to the terms of
                     this Guarantee.

(C)          REMEDIAL ACTION

             (1)     If, for any Reporting Period during the Guarantee Term,
                     Buyer notifies BRAD that the Achieved Aircraft Schedule
                     Reliability is below the applicable Aircraft Schedule
                     Reliability Target and the contents of the applicable
                     reports mentioned in Section (D)(1) confirm the contents of
                     Buyer's notification, then BRAD shall:

                     (i)     investigate circumstances and the possible causes
                             for excessive interruptions, and

                     (ii)    upon [CONFIDENTIAL PORTION DELETED] request,
                             [CONFIDENTIAL PORTION DELETED] deems appropriate
                             for [CONFIDENTIAL PORTION DELETED].

             (2)     If, at the end of the next Reporting Period after which the
                     foregoing recommended remedial actions have been
                     accomplished it is Buyer's and BRAD's opinion based on
                     Buyer's notification that the Achieved Aircraft Schedule
                     Reliability is [CONFIDENTIAL PORTION DELETED] then BRAD
                     shall:

                     (i)     initiate [CONFIDENTIAL PORTION DELETED] and, when
                             in [CONFIDENTIAL PORTION DELETED] is indicated as
                             the most appropriate [CONFIDENTIAL PORTION DELETED]
                             and [CONFIDENTIAL PORTION DELETED] practicable
                             means of [CONFIDENTIAL PORTION DELETED] and

                     (ii)    if such [CONFIDENTIAL PORTION DELETED] being
                             offered by [CONFIDENTIAL PORTION DELETED], provide
                             [CONFIDENTIAL PORTION DELETED], at [CONFIDENTIAL
                             PORTION DELETED] and in quantities not
                             [CONFIDENTIAL PORTION DELETED] the quantity of
                             [CONFIDENTIAL PORTION DELETED] in the [CONFIDENTIAL
                             PORTION DELETED] for support of the [CONFIDENTIAL
                             PORTION DELETED].

                     (iii)   Sections (C)(2)(i) and (C)(2)(ii) above shall not
                             apply to [CONFIDENTIAL PORTION DELETED] nor to
                             [CONFIDENTIAL PORTION DELETED]. However, if it
                             becomes apparent that failure to meet the
                             [CONFIDENTIAL PORTION DELETED] can be attributed
                             primarily to [CONFIDENTIAL PORTION DELETED] or by
                             the [CONFIDENTIAL PORTION DELETED], and if
                             [CONFIDENTIAL PORTION DELETED] would otherwise be
                             entitled to remedies under such (C)(2)(i) and
                             (C)(2)(ii) above, [CONFIDENTIAL PORTION DELETED]
                             will use


                                       3


<PAGE>   85

                             its reasonable efforts to obtain the [CONFIDENTIAL
                             PORTION DELETED] cooperation for the purpose of
                             achieving the [CONFIDENTIAL PORTION DELETED].

(D)          ADMINISTRATIVE REQUIREMENTS

             (1)     Buyer shall submit to BRAD within thirty (30) days after
                     the Reporting Period, the total number of Chargeable
                     Aircraft Schedule Interruptions and the total number of
                     Scheduled Revenue Departures during the preceding six (6)
                     months. Notwithstanding what is stipulated above, during
                     any Reporting Period when any Guarantee remedies are being
                     provided by BRAD to Buyer, Buyer shall submit to BRAD
                     monthly reports of Chargeable Aircraft Schedule
                     Interruptions.

                     Each report shall also include the average Achieved
                     Aircraft Schedule Reliability for all of the previous
                     Reporting Period for the relevant year of the Guarantee
                     Term, if any.

             (2)     Upon request, Buyer shall submit to BRAD reasonable proof
                     that any interruption claimed by Buyer to constitute a
                     Chargeable Aircraft Schedule Interruption does in fact
                     constitute a Chargeable Aircraft Schedule Interruption.
                     Buyer shall maintain and submit to BRAD such records, data
                     and reports as may reasonable be required to (i) determine
                     Achieved Aircraft Schedule Reliability, (ii) analyze the
                     problems encountered and the causes thereof, and (iii) when
                     required, develop appropriate remedial action.

             (3)     BRAD may require Buyer to furnish, from time to time, such
                     additional information as is reasonably necessary to
                     monitor Chargeable Aircraft Schedule Interruptions or
                     investigate any related schedule reliability problem.

             (4)     Buyer shall maintain complete records referred to above in
                     support of all reports required from Buyer under this
                     Guarantee and such records shall be retained by Buyer for a
                     minimum of one year after submittal of the report to which
                     they pertain. All such records and any other data in
                     Buyer's possession reasonably required for the proper
                     administration of this Guarantee shall, upon request, be
                     made available at Buyer's facilities for examination by
                     BRAD.

             (5)     Failure to [CONFIDENTIAL PORTION DELETED] after the
                     [CONFIDENTIAL PORTION DELETED] shall constitute an
                     acknowledgment by [CONFIDENTIAL PORTION DELETED] that there
                     was [CONFIDENTIAL PORTION DELETED] for such [CONFIDENTIAL
                     PORTION DELETED] be obligated to provide any [CONFIDENTIAL
                     PORTION DELETED] arising under this [CONFIDENTIAL PORTION
                     DELETED] for such [CONFIDENTIAL PORTION DELETED].

             (6)     All reports under this Guarantee shall be submitted by
                     Buyer to the attention of:

(E)          COMPLIANCE AND VALIDITY

             If at any time Buyer is deficient in forwarding the Achieved
             Aircraft Schedule Reliability as defined in Section (D) in this
             Guarantee on the due dated during or after two [CONFIDENTIAL
             PORTION DELETED], and after [CONFIDENTIAL PORTION DELETED]
             referring to this [CONFIDENTIAL PORTION DELETED], [CONFIDENTIAL
             PORTION DELETED] after receipt of such notice, then [CONFIDENTIAL
             PORTION DELETED] has the right to declare to have fulfilled the
             conditions of the [CONFIDENTIAL PORTION DELETED] without any
             further obligations of [CONFIDENTIAL PORTION DELETED].

(F)          GENERAL CONDITIONS AND LIMITATIONS

             (1)     The Aircraft Schedule Reliability Targets defined in
                     Section (B)(1) herein and set forth in Attachment A hereto
                     are based on certain factors controlled by Buyer revenue
                     service operations such as annual utilization, average
                     stage length, average turnaround time, average thru-stop
                     time and certain other maintenance and operational factors
                     under Buyer's control. These factors are identified in
                     Attachment A hereto. If, for any Reporting Period, the
                     Covered Aircraft experience changes in any such factors,
                     the Aircraft Schedule Reliability Target for such Reporting
                     Period shall be adjusted:


                                       4


<PAGE>   86

                      (i)     to reflect changes in the schedule reliability
                              parameters set forth in Attachments A, if any such
                              parameter increases or decreases by more than
                              [CONFIDENTIAL PORTION DELETED]. Then the Aircraft
                              Schedule Reliability Target will be reviewed by
                              both parties. The intent of such review shall be
                              for the parties to agree upon a reasonable
                              adjustment to the targets to compensate for the
                              change in operations;

                     (ii)     to reflect changes that cause "Other Flight
                              Profile Factors" to exceed the limits set forth in
                              Attachment A, by mutual agreement between BRAD and
                              Buyer.

             (2)     If BRAD or any Vendor issue no-charge service bulletins or
                     service bulletins with no-charge retrofit kits which, when
                     incorporated, will improve Aircraft Schedule Reliability,
                     Buyer shall implement such at the earliest reasonable time,
                     but in no event later than [CONFIDENTIAL PORTION DELETED]
                     period as may be established by mutual agreement between
                     BRAD and Buyer to be consistent with Buyer's FAA approved
                     maintenance program, such period commencing with the date
                     of Buyer's receipt of such service bulletins or sufficient
                     retrofit kits to support Buyer's reasonable installation
                     schedule for such kits. In the event of [CONFIDENTIAL
                     PORTION DELETED] relating to the parts or components
                     [CONFIDENTIAL PORTION DELETED] until such time as
                     [CONFIDENTIAL PORTION DELETED], unless [CONFIDENTIAL
                     PORTION DELETED] submits to [CONFIDENTIAL PORTION DELETED]
                     reasonable proof that [CONFIDENTIAL PORTION DELETED] is not
                     [CONFIDENTIAL PORTION DELETED] or that any such
                     [CONFIDENTIAL PORTION DELETED] did not result [CONFIDENTIAL
                     PORTION DELETED].

             (3)     BRAD shall have the right (after consultation with Buyer)
                     to inspect and review Buyer's maintenance facilities,
                     programs and procedures as they relate to this Guarantee.
                     If BRAD recommends in writing reasonable changes in Buyer's
                     maintenance programs and procedures which are economically
                     feasible and would, based on data submitted by BRAD to
                     Buyer, improve the Achieved Aircraft Schedule Reliability,
                     and Buyer does not effect such changes or delays effecting
                     such changes beyond the period specified in Section (F) (2)
                     above for effecting service bulletins, BRAD and Buyer shall
                     negotiate an equitable adjustment to the occurrences which
                     will thereafter constitute a Chargeable Aircraft Schedule
                     Interruption.

             (4)     At [CONFIDENTIAL PORTION DELETED] request, [CONFIDENTIAL
                     PORTION DELETED] shall irrevocable [CONFIDENTIAL PORTION
                     DELETED], any and all of [CONFIDENTIAL PORTION DELETED]
                     right and authorities against [CONFIDENTIAL PORTION
                     DELETED] may reasonably require in the fulfillment of its
                     obligations under [CONFIDENTIAL PORTION DELETED]. Those
                     rights and authorities against [CONFIDENTIAL PORTION
                     DELETED] at the end of the term of [CONFIDENTIAL PORTION
                     DELETED].

             (5)     [CONFIDENTIAL PORTION DELETED] [CONFIDENTIAL PORTION
                     DELETED] referenced in Letter Agreement [CONFIDENTIAL
                     PORTION DELETED] coincident with delivery of the
                     [CONFIDENTIAL PORTION DELETED] at a [CONFIDENTIAL PORTION
                     DELETED]. The term of this [CONFIDENTIAL PORTION DELETED]
                     will extend until such time as the [CONFIDENTIAL PORTION
                     DELETED] of the [CONFIDENTIAL PORTION DELETED], at which
                     time the [CONFIDENTIAL PORTION DELETED] and this
                     [CONFIDENTIAL PORTION DELETED] will terminate.

             Buyer may make use of [CONFIDENTIAL PORTION DELETED] to replace
[CONFIDENTIAL PORTION DELETED] which constitute [CONFIDENTIAL PORTION DELETED].
Should [CONFIDENTIAL PORTION DELETED] elect to use [CONFIDENTIAL PORTION
DELETED] for any other purpose [CONFIDENTIAL PORTION DELETED] then [CONFIDENTIAL
PORTION DELETED] will [CONFIDENTIAL PORTION DELETED] per flight hour for each
such flight hour used.

             All other terms and conditions of such lease will be substantially
in accordance with the term and conditions of the lease between [CONFIDENTIAL
PORTION DELETED] and [CONFIDENTIAL PORTION DELETED] relating to [CONFIDENTIAL
PORTION DELETED].


                                       5


<PAGE>   87

(G)          [CONFIDENTIAL PORTION DELETED]

             THE [CONFIDENTIAL PORTION DELETED] PROVIDED IN THIS LETTER
AGREEMENT AND THE OBLIGATIONS AND LIABILITIES ON THE PART OF [CONFIDENTIAL
PORTION DELETED] UNDER THE [CONFIDENTIAL PORTION DELETED] ARE ACCEPTED BY
[CONFIDENTIAL PORTION DELETED] AND ARE EXCLUSIVE AND IN LIEU OF, AND
[CONFIDENTIAL PORTION DELETED] HEREBY WAIVES, RELEASES AND RENOUNCES ALL OTHER
REMEDIES, WARRANTIES, GUARANTEES OR LIABILITIES, EXPRESS OR IMPLIED, WITH
RESPECT TO THIS [CONFIDENTIAL PORTION DELETED] CONCERNING EACH [CONFIDENTIAL
PORTION DELETED], ARISING IN FACT, CONTRACT, LAW, TORT, STRICT PRODUCT LIABILITY
OR OTHERWISE WISE INCLUDING, WITHOUT LIMITATION ANY OBLIGATION LIABILITY CLAIM
OR REMEDY WHETHER OR NOT ARISING FROM NEGLIGENCE (WHETHER ACTIVE, PASSIVE OR
IMPUTED) OF [CONFIDENTIAL PORTION DELETED] , ITS OFFICERS, EMPLOYEES, AGENTS OR
ASSIGNEE, OR WITH RESPECT TO ANY IMPLIED [CONFIDENTIAL PORTION DELETED] , ANY
IMPLIED CONDITION, ANY IMPLIED WARRANTY ARISING FROM COURSE OF PERFORMANCE,
COURSE OF DEALING OR USAGE OR TRADE, LOSS OF USE, REVENUE OR PROFIT OR FOR ANY
OTHER DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, PUNITIVE LOSS OR DAMAGES.

If the foregoing correctly sets forth your understanding of our agreement with
respect to the above matters, please indicate your acceptance and agreement
below.

Yours truly

Bombardier Regional Aircraft Inc.

- -------------------------
Paul H. Francoeur,
Vice-President, Contracts

ACCEPTED AND AGREED TO:

this_________ day of March,1995

MESA AIRLINES, Inc.

By:
       -----------------------------------
Title:
       -----------------------------------

                                       6


<PAGE>   88

                                  ATTACHMENT A

                          AIRCRAFT SCHEDULE RELIABILITY

AIRCRAFT SCHEDULE RELIABILITY TARGET

BRAD guarantees that the Aircraft Schedule Reliability with respect to avoidance
of chargeable Aircraft Schedule Interruptions shall at the end of the periods
indicated below meet the percentages specified below as Guarantee Value.

                     PERIOD                    GUARANTEE
                                               VALUE %

                     [CONFIDENTIAL PORTION DELETED]
                     [CONFIDENTIAL PORTION DELETED]
                     [CONFIDENTIAL PORTION DELETED]

ASSUMPTIONS

Average Flight Length [CONFIDENTIAL PORTION DELETED].

Aircraft Yearly Utilization [CONFIDENTIAL PORTION DELETED].

Average Turnaround Time is [CONFIDENTIAL PORTION DELETED].

Average Thru-stop is [CONFIDENTIAL PORTION DELETED].


                                       7


<PAGE>   89

Date: March 24, 1995
Our Ref:  B95-7701-MJR-009

Mesa Airlines, Inc.
2325 East 30th,
Farmington New Mexico
U.S.A. 87401

Attention: Mr. Larry Risley, Chairman

Gentlemen:

RE:  LETTER AGREEMENT NO. B95-7701-MJR-009 (RE: CUSTOMER SUPPORT AND WARRANTY
AND SERVICE LIFE POLICY)

Reference is made to Purchase Agreement No. B95-7701-PA-299 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Airlines, Inc. ("Buyer") for the sale of twenty-five
(25) DHC-8- 200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

All terms used herein and in the Agreement and not defined herein, shall have
the same meanings as in the Agreement.

Customer Support Services and Warranty

The following Customer Support Services and Warranty are those services to which
reference is made in Article 3 of the Agreement.

Unless otherwise expressly provided in Exhibit E and Exhibit F, the expressions
used herein shall when defined in the Agreement have the same meaning as in the
Agreement.

CUSTOMER SUPPORT

ARTICLE 1 - TECHNICAL SUPPORT

1.1      FACTORY SERVICE

         BRAD agrees to maintain or cause to be maintained the capability to
         respond to Buyer's technical inquiries, to conduct investigations
         concerning repetitive maintenance problems and to issue findings and
         recommend action thereof. This service shall be provided for as long
         [CONFIDENTIAL PORTION DELETED] of the Dash 8 aircraft remain in
         commercial air transport service.

1.2      FIELD SERVICE REPRESENTATIVE

         1.2.1   SERVICES

                 BRAD shall assign [CONFIDENTIAL PORTION DELETED] to advise and
                 instruct Buyer's personnel in the maintenance procedures for
                 the aircraft.

         1.2.2   TERM

                 BRAD shall provide the Services at Buyer's main base of
                 operation or other location as may be mutually agreed. Such
                 assignment shall commence approximately one (1) month prior to
                 the Delivery Date of the first Aircraft (approx . Feb. 1996)
                 and [CONFIDENTIAL PORTION DELETED] (approx. Mar. 1997)  The
                 Services may be extended on terms and conditions to be mutually
                 agreed upon.


                                       1
<PAGE>   90

         1.2.3   TRAVEL

                 If requested by Buyer the FSR may at [CONFIDENTIAL PORTION
                 DELETED] travel to another location to provide technical advice
                 to Buyer.

         1.2.4   OFFICE FACILITIES

                 Buyer shall furnish the FSR, at no charge to BRAD,
                 [CONFIDENTIAL PORTION DELETED] conveniently located
                 [CONFIDENTIAL PORTION DELETED] or other location as may be
                 mutually agreed.

         1.2.5   ADDITIONAL EXPENSES

                 Buyer shall reimburse BRAD (net of any additional taxes on such
                 reimbursement) the amount of any and all taxes (except Canadian
                 taxes on the income of BRAD) and fees of whatever nature,
                 including any customs duties, withholding taxes or fees
                 together with any penalties or interest thereon, paid or
                 incurred by BRAD or the BRAD employee as a result of or in
                 connection with the rendering of the FSR Services.

         1.2.6   WORK PERMITS AND CLEARANCES

                 Buyer shall arrange for all necessary work permits and airport
                 security clearances required for the BRAD employee to permit
                 timely accomplishment of the Services.

1.3      MAINTENANCE PLANNING SUPPORT (IN-SERVICE MAINTENANCE DATA)

         Buyer agrees to provide to BRAD in-service maintenance data in order to
         provide updates to BRAD's recommended maintenance program. Buyer and
         BRAD shall agree on standards and frequency for communication of such
         data.

1.4      INTERFACE PROBLEM

         1.4.1   INTERFACE PROBLEM RESOLUTION

                 If Buyer experiences any technical problem in the operation of
                 the Aircraft or its systems which, after reasonable
                 investigation, is not readily identifiable by Buyer, but which
                 Buyer reasonably believes to be attributable to the design
                 characteristics of one or more components or systems of the
                 Aircraft (an "Interface Problem"), BRAD shall, if requested by
                 Buyer and without additional charge to Buyer, promptly conduct
                 an analysis of such Interface Problem to determine, its cause
                 or causes and to recommend corrective action. If BRAD
                 determines that the Interface Problem is attributable to the
                 design of BRAD parts, BRAD shall, if requested by Buyer,
                 correct the design to the extent of existing obligations of
                 BRAD under Exhibit F, Aircraft Warranty.

                 If BRAD determines that the Interface Problem is attributable
                 to the design of a Vendor Part, BRAD shall, if requested by
                 Buyer, reasonably assist Buyer in processing any warranty
                 claims Buyer may have against the Vendor of the part. BRAD
                 shall also take reasonable action with the Vendor to obtain a
                 correction of the Interface Problem.

                 If BRAD determines that the Interface Problem is attributable
                 jointly to the design of BRAD parts and Vendor parts, BRAD
                 shall, if requested by Buyer reasonably seek a cooperative
                 solution with the Vendor(s).

         1.4.2   VENDOR INTERFACE PROBLEM BACKSTOP

                 For those Interface Problems which are determined to be
                 attributable to the design of a Vendor Part, excluding
                 Powerplant Parts, if the parties agree that a vendor is in
                 default regarding the resolution of an Interface Problem during
                 the applicable warranty obtained by BRAD from such vendor, BRAD
                 shall take reasonable action to correct the Interface Problem.


                                       2


<PAGE>   91

1.5      VENDOR PRODUCT SUPPORT AGREEMENTS

         BRAD has made and will continue to make reasonable efforts to establish
         and maintain favorable agreements with Vendors with respect to their
         providing product support goods and services. The vendor product
         support agreements describe the goods and services, and provide the
         terms and conditions to which Vendors must adhere. Generally these
         agreements cover but are not limited to Spare Parts availability and
         delivery, exchange and leasing programs, ground support equipment,
         technical assistance, training, technical data and manuals, repair and
         overhaul, and warranty.

         In the event the parties agree that a vendor is in default of a
         material obligation under any applicable product support agreement
         obtained by BRAD from that vendor, BRAD shall take reasonable action to
         meet the terms and conditions of that agreement except for vendor
         warranty, the terms and conditions of EXHIBIT F, Article 2.2 shall
         apply.

1.6      ADDITIONAL SERVICES

         At Buyer's request BRAD shall provide a proposal to provide such
         additional support services as the parties may agree upon, which may
         include special investigations, maintenance and repair of the Aircraft.

ARTICLE 2 - SPARE PARTS, GSE, TOOLS AND TEST EQUIPMENT

2.0      SPARE PARTS SUPPORT PROGRAM

             See Letter Agreement Ref. No.B95-7701-MJR-006 for details of the
         Spare Parts Support Program (SPSP).  The following, where applicable,
         is supplementry to the SPSP.

2.1      DEFINITIONS

         A)  "BRAD PARTS":

             Any spare parts, ground support equipment, tools and test equipment
             which bear a de Havilland Cage Code number in the BRAD Provisioning
             Files (as that expression is defined in ATA Specification 2000).

         B)  "POWER PLANT PARTS":

             Any power plant or power plant part or assembly carrying the power
             plant manufacturer's part number or any part furnished by the power
             plant manufacturer for incorporation on the Aircraft.

         C)  "VENDOR PARTS":

             Any parts or items of equipment which are not BRAD Parts or Power
             Plant Parts.

         D)  "SPARE PARTS" OR "SPARE PARTS":

             All materials, spare parts, assemblies, special tools and items of
             equipment, including ground support equipment, ordered by Buyer
             from BRAD. The term Spare Parts includes BRAD parts.

         E)  "ORDER":

             Any order for Spare Parts issued by Buyer to BRAD.

2.1      TERM AND APPLICABILITY

         The term of this Article shall become effective on the date hereof and
         shall remain in full force and effect with respect to the purchase and
         sale of Spare Parts so long as at least [CONFIDENTIAL PORTION DELETED]
         of the Dash 8 aircraft remain in commercial air transport service. The
         provisions of Articles 2.2, 2.6.5, 2.24, and 5.0 survive termination of
         this Agreement.


                                       3


<PAGE>   92

2.2      ORDER TERMS

         Terms and conditions hereof shall apply to all Spare Parts orders
         placed by Buyer with BRAD in lieu of any terms and conditions in
         Buyer's purchase orders.

 2.3     PURCHASE AND SALE OF SPARE PARTS

         2.3.1   AGREEMENT TO MANUFACTURE AND SELL

                 BRAD shall manufacture, or procure, and make available for sale
                 to Buyer suitable BRAD Spare Parts in quantities sufficient to
                 meet the reasonably anticipated needs of operators for normal
                 maintenance and normal spares inventory replacement for each
                 Aircraft. During the term of this Agreement BRAD shall also
                 maintain a shelf stock of certain BRAD Parts selected to ensure
                 reasonable re-order lead times and emergency support. BRAD may
                 maintain additional shelf stock of certain BRAD Parts at other
                 locations. BRAD shall maintain a reasonable quantity of BRAD
                 insurance parts. Insurance parts as used herein shall include,
                 but not be limited to, dispatch-essential parts such as major
                 flight control surfaces.

2.4      AGREEMENT TO PURCHASE BRAD PARTS

         2.4.1   PURCHASE OF BRAD PARTS

                 In consideration of BRAD's obligation under 2.3.1, during the
                 term stated in 2.1., Buyer agrees to purchase BRAD Parts only
                 from [CONFIDENTIAL PORTION DELETED] or from [CONFIDENTIAL
                 PORTION DELETED] herein. Buyer may however purchase
                 [CONFIDENTIAL PORTION DELETED] or have them [CONFIDENTIAL
                 PORTION DELETED], under the following conditions:

                 a)  When less than [CONFIDENTIAL PORTION DELETED] scheduled
                     commercial air transport service;

                 b)  Any time [CONFIDENTIAL PORTION DELETED]are needed to
                     effect [CONFIDENTIAL PORTION DELETED], provided that such
                     [CONFIDENTIAL PORTION DELETED] allows [CONFIDENTIAL PORTION
                     DELETED] to obtain [CONFIDENTIAL PORTION DELETED] to
                     furnish them; or

                 c)  If [CONFIDENTIAL PORTION DELETED] has notified
                     [CONFIDENTIAL PORTION DELETED] in use and if within a
                     reasonable period thereafter [CONFIDENTIAL PORTION
                     DELETED].

         2.4.2   BUYER'S RIGHT TO PURCHASE, [CONFIDENTIAL PORTION DELETED]

                 Buyer's right to purchase, [CONFIDENTIAL PORTION DELETED] under
                 the preceeding Article shall not be construed as a
                 [CONFIDENTIAL PORTION DELETED] and shall not obligate
                 [CONFIDENTIAL PORTION DELETED] or other information nor to the
                 payment of any [CONFIDENTIAL PORTION DELETED] shall be relieved
                 of any obligation or liability with respect to [CONFIDENTIAL
                 PORTION DELETED] in connection with any such [CONFIDENTIAL
                 PORTION DELETED]

         2.4.3   NOTICE TO [CONFIDENTIAL PORTION DELETED] of [CONFIDENTIAL
                 PORTION DELETED]

                 If [CONFIDENTIAL PORTION DELETED] shall immediately thereafter
                 advise [CONFIDENTIAL PORTION DELETED] and make available to
                 [CONFIDENTIAL PORTION DELETED] any such [CONFIDENTIAL PORTION
                 DELETED] If [CONFIDENTIAL PORTION DELETED] requests,
                 [CONFIDENTIAL PORTION DELETED] shall negotiate with
                 [CONFIDENTIAL PORTION DELETED] after such [CONFIDENTIAL PORTION
                 DELETED] for the granting to [CONFIDENTIAL PORTION DELETED]. If
                 no agreement is made for such [CONFIDENTIAL PORTION DELETED]
                 [CONFIDENTIAL PORTION DELETED] shall not be obligated to pay
                 any [CONFIDENTIAL PORTION DELETED] or [CONFIDENTIAL PORTION
                 DELETED] for this [CONFIDENTIAL PORTION DELETED] right.


                                       4


<PAGE>   93

2.5      PURCHASE OF VENDOR PARTS AND POWER PLANT PARTS

         BRAD may maintain a spares stock of selected Vendor Parts at its own
         discretion to support provisioning and replenishment sales. BRAD agrees
         to use reasonable efforts to require its Vendors to comply with the
         terms and conditions of this Article 2 as they apply to Vendor Parts.
         Vendor Parts shall be delivered per the Vendor's quoted lead time plus
         BRAD's internal processing time.

2.6      SPARE PARTS PRICING

         2.6.1   SPARE PARTS PRICE CATALOGUE

                 Prices for commonly used BRAD Parts shall be published in the
                 Spare Parts Price Catalogue which shall contain items stocked
                 by BRAD. BRAD shall hold the published prices firm for
                 catalogue stock class items for a period of [PORTION DELETED]
                 and shall provide at least [CONFIDENTIAL PORTION DELETED]
                 notice prior to changing the published price.

         2.6.2   BRAD PRICES FOR VENDOR PARTS

                 If Buyer orders Vendor Parts from BRAD, the price will be the
                 current catalogue price or as quoted per Article 2.6.3 below.

         2.6.3   QUOTATIONS

                 Price and delivery quotations for items not included in the
                 catalogue shall be provided at Buyer's request by BRAD. Price
                 quotations will be held firm for a period of [CONFIDENTIAL
                 PORTION DELETED] or as otherwise specified by BRAD.  Responses
                 to quotation requests will be provided within ten (10) calendar
                 days.

         2.6.4   PRICE APPLICABILITY

                 The purchase prices of BRAD Parts shall be the applicable
                 prices set forth in the Spare Parts Price Catalogue at time of
                 receipt by BRAD of Buyer's Order or as quoted by BRAD to Buyer
                 upon request. If Buyer requests accelerated delivery or special
                 handling for BRAD Spare Parts not included in the Price
                 Catalogue, BRAD may increase the price from the original
                 quotation to cover any additional costs to BRAD. Parts ordered
                 on [CONFIDENTIAL PORTION DELETED] will not be subject to this
                 [CONFIDENTIAL PORTION DELETED].

         2.6.5   CURRENCY AND TAXES

                 All Spare Parts Price Catalogue and quotation prices shall be
                 in U.S. dollars and exclusive of transportation, taxes, duties
                 and licenses.

                 Buyer shall pay to BRAD upon demand the amount of any sales,
                 use, value-added, excise or similar taxes imposed by any
                 federal, provincial or local taxing authority within Canada,
                 and the amount of all taxes imposed by any taxing authority
                 outside Canada, required to be paid by BRAD as a result of any
                 sale, use, delivery, storage or transfer of any Spare Parts. If
                 BRAD has reason to believe that any such tax is applicable,
                 BRAD shall separately state the amount of such tax in its
                 invoice. If a claim is made against BRAD for any such tax, BRAD
                 shall promptly notify Buyer. According to current legislation,
                 Canadian taxes, duties and Goods and Services Tax are not
                 applicable to aircraft or aircraft parts sold and immediately
                 from Canada.

                 In addition, Buyer shall pay to BRAD on demand the amount of
                 any customs duties required to be paid by BRAD with respect to
                 the importation by Buyer of any BRAD Parts.


                                       5


<PAGE>   94

         2.6.6   VENDOR PRICING

                 BRAD shall use reasonable efforts to require its major Vendors
                 to maintain any published price for their parts for a period of
                 at least [CONFIDENTIAL PORTION DELETED] with a [CONFIDENTIAL
                 PORTION DELETED] prior to changing a published price.

2.8      OBSOLETE SPARE PARTS

         2.8.1   OBLIGATION TO SUBSTITUTE OBSOLETE SPARE PARTS

                 In the event that, prior to delivery of the first Aircraft, any
                 Spare Part purchased by Buyer from BRAD is rendered obsolete or
                 unusable due to the redesign of the Aircraft or of any
                 accessory, equipment or part thereto, (other than a redesign at
                 Buyer's request), BRAD shall deliver to Buyer new and usable
                 Spare Parts in substitution for such obsolete or unusable Spare
                 Parts upon their return to BRAD by Buyer. BRAD shall credit
                 Buyer's account with BRAD with the price paid by Buyer for any
                 such obsolete or unusable Spare Part and shall invoice Buyer
                 for the purchase price of any such substitute Spare Part
                 delivered to Buyer.

         2.8.2   DELIVERY OF OBSOLETE SPARE PARTS AND SUBSTITUTES THEREFOR

                 Obsolete or unusable Spare Parts returned by Buyer pursuant to
                 this Item 2.8.1. shall be delivered to BRAD at its plant in
                 Ontario, or such other destination as BRAD may reasonably
                 designate. Spare Parts substituted for such returned obsolete
                 or unusable Spare Parts shall be delivered to Buyer from BRAD's
                 plant in Ontario, or such other BRAD shipping point as BRAD may
                 reasonably designate. BRAD shall pay the freight charges for
                 the shipment from Buyer to BRAD of any such obsolete or
                 unusable Spare Part and for the shipment from BRAD to Buyer of
                 any such substitute Spare Part.

2.9      PROCEDURE FOR ORDERING SPARE PARTS

         Orders for Spare Parts may be placed by Buyer to BRAD by any method of
         order placement (including but not limited to SITA, ARINC, telecopier,
         letter, telex, facsimile, telephone or hard copy purchase order).

         2.9.1   REQUIREMENTS

                 Orders shall include at a minimum order number, part number,
                 nomenclature, quantity, delivery schedule requested, shipping
                 instructions and BRAD's price, if available. Buyer agrees that
                 orders placed with BRAD shall conform to the requirements and
                 procedures contained in ATA Specification 2000, as applicable
                 to Buyer.

         2.9.2   PROCESSING OF ORDERS

                 Upon acceptance of any Order, unless otherwise directed by
                 Buyer, BRAD shall, if the Spare Parts are in stock, proceed
                 immediately to prepare the Spare Parts for shipment to Buyer.
                 If BRAD does not have the Spare Parts in stock, BRAD shall
                 proceed immediately to acquire or manufacture the Spare Parts.
                 Purchase order status and actions related to the shipment of
                 Spare Parts shall be generally consistent with the provisions
                 of the World Airline Suppliers Guide and the applicable
                 portions of ATA Specification 2000, as applicable to Buyer.

         2.9.3   CHANGES

                 BRAD reserves the right, without Buyer's consent, to make any
                 necessary corrections or changes in the design, part number and
                 nomenclature of Spare Parts covered by an Order, to substitute
                 Spare Parts and to adjust prices accordingly, provided that
                 interchangeability is not affected and the unit price is not
                 increased by [CONFIDENTIAL PORTION DELETED] whichever is less.
                 BRAD shall promptly give Buyer written notice of corrections,
                 changes, substitutions and consequent price adjustments.
                 Corrections, changes, substitutions and price adjustments which
                 affect interchangeability or exceed


                                       6


<PAGE>   95

                 the price limitations set forth above may be made only with
                 Buyer's consent, which consent shall conclusively be deemed to
                 have been given unless Buyer gives BRAD written notice of
                 objection within 15 business days after receipt of BRAD's
                 notice. In case of any objection, the affected Spare Part will
                 be deemed to be deleted from Buyer's Order.

2.10     PACKING

         All Spare Parts ordered shall receive standard commercial packing
         suitable for export shipment via airfreight. Such standard packing will
         generally be to ATA 300 standards as amended from time to time. All AOG
         orders will be handled, processed, packed and shipped separately.

2.11     PACKING LIST

         BRAD shall insert in each shipment a packing list/release note itemized
         to show:

         (i)   the contents of the shipment,
         (ii)  the approved signature of BRAD's Transport Canada's authority
               attesting to the airworthiness of the Spare Parts.
         (iii) value of the shipment for customs clearance if required.

2.12     CONTAINER MARKS

         Upon Buyer's request each container shall be marked with shipping marks
         as specified on the Order. In addition BRAD shall, upon request,
         include in the markings: gross weight and cubic measurements.

2.13     DELIVERY, TITLE AND RISK OF LOSS

         2.13.1  DELIVERY POINT

                 Spare Parts shall be delivered to Buyer in one of the following
                 manners at BRAD's sole option:

                 i)   Free Carrier (Incoterms) BRAD's plant in Ontario, Canada;
                      or
                 ii)  Free Carrier (Incoterms) other BRAD depots or shipping
                      points; or
                 iii) Free Carrier (Incoterms) vendor's or subcontractor's
                      plant.

         2.13.2 DELIVERY TIME

                 BRAD shall use reasonable efforts so that shipment of BRAD
                 Parts to Buyer be as follows:

                 a)  AOG ORDERS

                     Ship AOG orders within [CONFIDENTIAL PORTION DELETED] of
                     receipt of order.  [CONFIDENTIAL PORTION DELETED] shall be
                     required on AOG orders;

                 b)  CRITICAL ORDERS (A1)

                     Ship critical orders within t[CONFIDENTIAL PORTION DELETED]
                     of order receipt;

                 c)  EXPEDITE ORDERS (A2)

                     Ship expedite  orders within [CONFIDENTIAL PORTION DELETED]
                     of order receipt;

                 d)  INTENTIONALLY LEFT BLANK


                                       7


<PAGE>   96

                 e)  OTHER ORDERS

                     Shipment of stock items shall be approximately
                     [CONFIDENTIAL PORTION DELETED] after BRAD's receipt of
                     Buyer's order. Shipment of non-stock items shall be in
                     accordance with quoted lead times or lead times published
                     in the current Spare Parts Price Catalogue, procurement
                     data, or provisioning data.

2.14     COLLECT SHIPMENTS

         Where collect shipments are not deemed practicable by BRAD, charges for
         shipment, insurance, prepaid freight charges and all other costs paid
         by BRAD shall be paid by Buyer promptly upon presentation to Buyer of
         invoices covering the same.

2.15     FREIGHT FORWARDER

         If Buyer elects to use the services of a freight forwarder for the
         onward movement of Spare Parts, Buyer agrees to release BRAD from and
         indemnify it for any liability for any fines or seizures of Spare Parts
         imposed under any governmental Goods in Transit regulations. Any such
         fines levied against BRAD will be invoiced to Buyer and any Spare Parts
         seized under such regulations will be deemed to be received, inspected,
         and accepted by Buyer at the time of seizure.

2.16     REIMBURSEMENT OF EXPENSES

         If BRAD gives Buyer written notice that an Order is ready for shipment
         and shipment is delayed more than thirty (30) days at Buyer's request
         or without BRADS's fault or responsibility, Buyer shall promptly
         reimburse BRAD upon demand for all costs and expenses, including but
         not limited to reasonable amounts for storage, handling, insurance and
         taxes, incurred by BRAD as a result of such delay.

2.17     TITLE AND RISK OF LOSS

         Property and title to the Spare Parts will pass to Buyer upon payment
         for the Spare Parts in full. Until payment in full for Spare Parts, (a)
         title to them will not pass to Buyer, and (b) BRAD maintains a purchase
         money security interest in them. Risk of loss of the Spare Parts will
         pass to the Buyer upon delivery by BRAD. With respect to Spare Parts
         rejected by Buyer pursuant to Article 2.18, risk of loss shall remain
         with Buyer until such Spare Parts are re-delivered to BRAD.

         BRAD agrees to notify Buyer when material is shipped and shall provide
         carrier's reference information (i.e., waybill number).

2.18     INSPECTION AND ACCEPTANCE

         All Spare Parts shall be subject to inspection by Buyer at destination.
         Use of Spare Parts or failure of Buyer to give notice of rejection
         within thirty (30) days after receipt shall constitute acceptance.
         Acceptance shall be final and Buyer waives the right to revoke
         acceptance for any reason, whether or not known to Buyer at the time of
         acceptance. Buyer's remedies for defects discovered after acceptance
         are exclusively provided for in Article 2.19 herein.

2.19     REJECTION

         Any notice of rejection refered to in Article 2.18 shall specify the
         reasons for rejection. If BRAD concurs with a rejection, BRAD shall, at
         its option, correct, repair or replace the rejected Spare Parts. Buyer
         shall, upon receipt of BRAD's written instructions and Material Return
         Authorization number, return the rejected Spare Parts to BRAD at its
         specified plant, or other destination as may be mutually agreeable. The
         return of the rejected Spare Parts to BRAD and the return or delivery
         of a corrected or repaired rejected Spare Part of any replacement for
         any such Spare Part to Buyer shall be at BRAD's expense. Any corrected,
         repaired or replacement Spare Parts shall be subject to the provisions
         of this Agreement.


                                       8


<PAGE>   97

2.20     PAYMENT

         Except as provided in Article 2.21 below, Payment terms shall be net
         thirty (30) calendar days of invoice date for established open
         accounts. Any overdue amount shall bear interest from the due date
         until actual payment is received by BRAD at an annual rate of interest
         equal to the U.S. prime interest rate as established from time to time
         by the National Bank of Canada, plus [CONFIDENTIAL PORTION DELETED]
         calculated and compounded monthly.

2.21     INTENTIONALLY LEFT BLANK

2.22     MODIFIED TERMS OF PAYMENT

         BRAD reserves the right to alter the terms of payment:

         i)   at any time by giving Buyer thirty (30) days' prior written notice
              of the new terms, and
         ii)  without prior notice if Buyer fails to pay when due an amount
              Buyer owes under any agreement with BRAD.

2.23     REGULATIONS

         Buyer shall comply with all applicable monetary and exchange control
         regulations and shall obtain any necessary authority from the
         governmental agencies administering such regulations to enable Buyer to
         make payments at the time and place and in the manner specified herein.

2.24     WARRANTY

         EXHIBIT"F" HERETO EXCLUSIVELY SETS FORTH BRAD'S WARRANTY OBLIGATIONS
         WITH RESPECT TO SPARE PARTS. EXCEPT AS EXPRESSLY SET OUT IN EXHIBIT
         "F", THERE ARE NO UNDERSTANDINGS, REPRESENTATIONS, CONDITIONS OR
         WARRANTIES, EXPRESS OR IMPLIED, BETWEEN THE PARTIES WITH RESPECT TO ANY
         DEFECT IN THE SPARE PARTS OR ANY OTHER THING DELIVERED UNDER THIS
         AGREEMENT.

2.25     CANCELLATION OF ORDERS

         If Buyer cancels an Order for [CONFIDENTIAL PORTION DELETED], but not
         less than the following [CONFIDENTIAL PORTION DELETED] covered by the
         Order:

         a)      if work accomplished on the Order has been limited to
                 [CONFIDENTIAL PORTION DELETED], or the part has been identified
                 as [CONFIDENTIAL PORTION DELETED] shall be made;

         b)      if production planning has been completed on the Order and shop
                 orders have been written, but no shop time or material charges
                 have been made against the Order, [CONFIDENTIAL PORTION
                 DELETED]

         c)      if shop time or material charges have been made against the
                 Order, [CONFIDENTIAL PORTION DELETED]; and

         d)      if the [CONFIDENTIAL PORTION DELETED] covered by the Order can
                 be [CONFIDENTIAL PORTION DELETED]  without increasing
                 [CONFIDENTIAL PORTION DELETED] shall be made.

2.26     ADDITIONAL TERMS AND CONDITIONS

         BRAD's sales order shall incorporate the terms and conditions stated
         herein. Additional terms and conditions applicable at time of receipt
         of each order from Buyer may be added providing such terms and
         conditions do not conflict with the terms and conditions provided
         herein. Such additional terms and conditions shall be provided to Buyer
         at least ninety (90) calendar days prior to their effective date.


                                       9


<PAGE>   98

2.27     LEASE

         BRAD shall select and make available certain parts for lease, subject
         to availability and Buyer has the option to negotiate a lease agreement
         with BRAD separate from this Agreement.

ARTICLE 3 - TRAINING

3.1      GENERAL TERMS

         3.1.1   The objective of the training programs (the Programs), as
                 described herein, shall be to familiarize and assist Buyer's
                 personnel in the introduction, operation, and maintenance of
                 the aircraft.

                 BRAD shall offer to the Buyer the Programs in the English
                 language at a BRAD designated facility; the Programs shall be
                 completed prior to the Delivery Date of the last Aircraft
                 purchased herein.

         3.1.2   Buyer shall be responsible for all travel and living expenses,
                 including local transportation, of Buyer's personnel incurred
                 in connection with the Programs.

         3.1.3   The Programs shall be designed to reflect the model and/or
                 configuration of the Aircraft and may include differences
                 training to identify such configuration or model. Manuals and
                 training materials which are provided during the Programs
                 exclude revision service.

         3.1.4   A Training Conference shall be held where possible no later
                 than twelve (12) months prior to the Scheduled Delivery Date of
                 the first Aircraft to the Buyer, or as may be otherwise agreed,
                 to establish the Programs' content and schedule.

3.2      FLIGHT CREW TRAINING

         3.2.1   FLIGHT CREW GROUND TRAINING

                 At no additional charge, BRAD shall provide with each delivered
                 Aircraft,Buyer's approved transition training for [CONFIDENTIAL
                 PORTION DELETED] of Buyer's crews [CONFIDENTIAL PORTION
                 DELETED] who meet the minimum entry requirement. Each course
                 shall consist of classroom instruction which may include
                 Computer Based Training (CBT), and Cockpit Procedures Mockup.
                 BRAD shall furnish each of Buyer's pilots attending the course
                 one copy of the the Pilot Training Manual (not subject to
                 revision).

         3.2.2   PILOT SIMULATOR TRAINING

                 BRAD shall provide training, at no additional cost to Buyer,
                 FAA approved flight simulator at FlightSafety Canada for each
                 of the crews trained under para 3.2.1.

         3.2.3   COURSE TRAINING MATERIAL

                 BRAD, upon Buyer's request, shall present a proposal to provide
                 one set of the materials (without revision service) used to
                 conduct the above courses, as follows:

                 i)   35 mm slides;
                 ii)  Full size colour instrument panel/overhead photo;
                 iii) Training Manuals;
                 iv)  Half-size colour instrument panel posters;
                 v)   Pre-flight walk-around video; and
                 vi)  Course syllabus.


                                       10


<PAGE>   99

3.3      MAINTENANCE TRAINING

         3.3.1   GENERAL

                 Buyer's personnel attending BRAD's maintenance training courses
                 shall receive a Maintenance Training Manual which is used
                 during the training. Maintenance Training shall consist of
                 classroom instruction supported by appropriate illustrations
                 and maintenance training aids construction, airframe,
                 electrical, avionics and powerplant systems as required by the
                 specific course. Maintenance Training shall include escorted
                 tours of aircraft production and flight line areas whenever
                 possible.

         3.3.2   INITIAL MAINTENANCE COURSE

                 [CONFIDENTIAL PORTION DELETED] shall provide with each
                 [CONFIDENTIAL PORTION DELETED] qualified personnel. The course
                 consists of [CONFIDENTIAL PORTION DELETED] instruction
                 pertaining to the entire aircraft and its systems covering
                 [CONFIDENTIAL PORTION DELETED]. It includes instruction in the
                 [CONFIDENTIAL PORTION DELETED] in the flight simulator to
                 provide [CONFIDENTIAL PORTION DELETED].

                 Buyer may elect to use a portion of the [CONFIDENTIAL PORTION
                 DELETED], for the purposes of attending a [CONFIDENTIAL PORTION
                 DELETED] course.

         3.3.4   COURSE TRAINING MATERIAL

                 BRAD upon Buyer's request shall present a proposal to provide
                 one set of the Maintenance Training Material Package prepared
                 by FlightSafety Canada. The package consists of:

                 a)       35mm slides;
                 b)       one full size, colour instrument panel/overhead photo;
                 c)       one set of Overhead Transparencies;
                 d)       Training Manuals and Schematic Manuals;
                 e)       Half-size colour instrument panel posters; and
                 f)       one course syllabus.

         3.3.5   VENDOR TRAINING

                 At Buyer's request , BRAD shall assist Buyer to obtain Vendor
                 maintenance training .

3.4      INTENTIONALLY LEFT BLANK

ARTICLE 4 - TECHNICAL DATA

4.1      TECHNICAL DATA

                 BRAD shall furnish to Buyer the Technical Data described in
                 Schedule A attached hereto (the "Technical Data"). The
                 Technical Data shall provide information on items manufactured
                 according to deHavilland's detailed design and in those units
                 of measures used in the Specification or as may otherwise be
                 required to reflect Aircraft instrumentation as may be mutually
                 agreed. The Technical Data and revision thereto shall be
                 prepared in the English language.

4.2      ATA SPECIFICATIONS

                 Unless otherwise noted in Schedule A, all Technical Data shall
                 be prepared generally be accordance with ATA Specification 100,
                 Revision 26.


                                       11


<PAGE>   100

4.3      SHIPMENT

                 All initial Technical Data provided hereunder shall be
                 delivered to the Buyer F.O.B. destination at the time indicated
                 in Schedule A.

4.4      REVISION SERVICE

                 A Revision Service shall be available for the applicable
                 Technical Data at no charge for six months following the
                 Delivery Date of the Buyer's last Aircraft and at a nominal
                 charge as long as the Buyer operates the Aircraft, but in no
                 event later than ten years after the delivery of the last of
                 that Aircraft type.

                 The applicability of Revision Service for the Technical Data
                 shall be as described in Table 1.

                 The revisions shall be delivered to the Buyer F.O.B.
                 destination.

4.5      PROPRIETARY TECHNICAL DATA

                 It is understood and the Buyer acknowledges that the Technical
                 Data provided herein are proprietary to BRAD and all rights to
                 copyright belong to BRAD and the Technical Data shall be kept
                 confidential by the Buyer. The Buyer agrees to use the
                 Technical Data solely to maintain, operate, overhaul or repair
                 the Aircraft or make installation or alteration thereto allowed
                 by BRAD.

                 Technical Data shall not be disclosed to third parties or used
                 by Buyer or furnished by Buyer for the design or manufacture of
                 any aircraft or Spare Parts including BRAD Parts or items of
                 equipment, except when manufacture or redesign is permitted
                 under the provisions of Section 2.4 hereof and then only to the
                 extent and for the purposes expressly permitted therein, and
                 provided further the recipient shall provide a non-disclosure
                 undertaking acceptable to BRAD.

4.6      VENDOR PARTS SERVICE BULLETINS

                 BRAD shall control Vendor Parts modification status by the
                 issuance of cover service bulletins for each Vendor service
                 bulletin.

SCHEDULE A
LIST OF TECHNICAL DATA

[CONFIDENTIAL PORTION DELETED]

                                     TABLE 1

ARTICLE 5 - DISCLAIMER AND RELEASE

5.0      DISCLAIMER AND RELEASE

         5.1     THE WARRANTIES, OBLIGATIONS AND LIABILITIES OF BRAD AND THE
                 REMEDIES OF BUYER SET FORTH IN EXHIBIT "F" ARE EXCLUSIVE AND IN
                 SUBSTITUTION FOR, AND BUYER HEREBY WAIVES, RELEASES AND
                 RENOUNCES, ALL OTHER WARRANTIES, CONDITIONS, OBLIGATIONS AND
                 LIABILITIES OF BRAD AND ALL RIGHTS, CLAIMS AND REMEDIES OF
                 BUYER AGAINST BRAD, EXPRESS OR IMPLIED, ARISING BY LAW OR
                 OTHERWISE, WITH RESPECT TO ANY DEFECT IN THE SPARE PARTS OR ANY
                 OTHER THING DELIVERED UNDER THIS ARTICLE, WHETHER THAT DEFECT
                 IS DISCOVERED BEFORE OR AFTER THE EXPIRY OF THE WARRANTY PERIOD
                 STATED IN EXHIBIT "F". THE WARRANTIES, CONDITIONS, OBLIGATIONS
                 AND LIABILITIES OF BRAD AND THE RIGHTS, CLAIMS AND REMEDIES OF
                 BUYER THAT ARE SUBSTITUTED, WAIVED, RELEASED AND RENOUNCED
                 INCLUDE, BUT ARE NOT LIMITED TO:


                                       12


<PAGE>   101

                 a)       ANY [CONFIDENTIAL PORTION DELETED] CONDITION OF
                          [CONFIDENTIAL PORTION DELETED] OR [CONFIDENTIAL
                          PORTION DELETED];

                 b)       ANY IMPLIED WARRANTY OR CONDITION [CONFIDENTIAL
                          PORTION DELETED];

                 c)       ANY [CONFIDENTIAL PORTION DELETED], WHETHER OR NOT
                          ARISING FROM THE [CONFIDENTIAL PORTION DELETED] AND

                 d)       ANY [CONFIDENTIAL PORTION DELETED], TO ANY
                          [CONFIDENTIAL PORTION DELETED], OR TO [CONFIDENTIAL
                          PORTION DELETED].

         5.2     BRAD SHALL HAVE NO OBLIGATION OR LIABILITY (AT LAW OR IN
                 EQUITY) IN CONTRACT (INCLUDING, WITHOUT LIMITATION, WARRANTY),
                 IN TORT (WHETHER OR NOT ARISING FROM THE ACTIVE, PASSIVE OR
                 IMPUTED NEGLIGENCE OR STRICT PRODUCTS LIABILITY OF BRAD) OF
                 OTHERWISE, FOR ANY [CONFIDENTIAL PORTION DELETED], INCLUDING
                 WITHOUT LIMITATION LOSS OF USE, LOSS OF REVENUE OR LOSS OF
                 PROFIT, WITH RESPECT TO 1) [CONFIDENTIAL PORTION DELETED].
                 NOTHING IN THIS ARTICLE SHALL BE CONSTRUED TO ALTER OBLIGATIONS
                 EXPRESSLY ASSUMED BY BRAD IN OTHER PROVISIONS OF THIS ARTICLE,
                 INCLUDING WITHOUT LIMITATION THE PROVISIONS OF EXHIBIT"F".

         5.3     THE BENEFIT OF THE WAIVER, RELEASE AND RENUNCIATION IN ARTICLE
                 5.0 AND OF THE [CONFIDENTIAL PORTION DELETED] IN ARTICLE 2.24
                 EXTENDS ALSO TO [CONFIDENTIAL PORTION DELETED], AND TO THE
                 OFFICERS, DIRECTORS, EMPLOYEES AND REPRESENTATIVES OF THE
                 [CONFIDENTIAL PORTION DELETED] ON WHOSE BEHALF AND FOR WHOSE
                 BENEFIT [CONFIDENTIAL PORTION DELETED] IS ACTING.


                                       13


<PAGE>   102

EXHIBIT F
WARRANTY AND SERVICE LIFE POLICY

The following warranty and service life policy are the warranty (hereinafter the
"Warranty") and service life policy (hereinafter the "SLP") to which reference
is made in Article 3.

Unless otherwise expressly provided in the Exhibit F the expressions used herein
shall when defined in the Agreement have the same meaning as in the Agreement.

ARTICLE 1 - WARRANTY

1.1      WARRANTY

         1.1.1   [CONFIDENTIAL PORTION DELETED] warrants that, at the Delivery
                 Date

                 [CONFIDENTIAL PORTION DELETED]

         1.1.2   The Warranty set forth in Article 1.1.1 c. and d. above shall
                 also be applicable to [CONFIDENTIAL PORTION DELETED].

         1.1.3   [CONFIDENTIAL PORTION DELETED] further warrants that, at the
                 time of delivery, [CONFIDENTIAL PORTION DELETED].

1.2      WARRANTY PERIOD

         1.2.1   The Warranty set forth in Article 1.1 shall remain in effect
                 for any defect covered by said Warranty becoming apparent
                 during the following periods (the "Warranty Period"):

                 [CONFIDENTIAL PORTION DELETED]

1.3      REPAIR, REPLACEMENT OR REWORK

         As to each matter covered by this Warranty BRAD's sole obligation and
         liability under this Warranty is expressly limited to, at BRAD's
         election, correction by the repair, replacement or rework of the
         defective part or item of Technical Data . The repaired, replaced or
         reworked part or item of Technical Data which is the subject of the
         Warranty claim shall then be warranted under the same terms and
         conditions for the then unexpired portion of the Warranty Period.

         In the case of a [CONFIDENTIAL PORTION DELETED] with the [CONFIDENTIAL
         PORTION DELETED], [CONFIDENTIAL PORTION DELETED] shall correct that
         [CONFIDENTIAL PORTION DELETED], except that BRAD will not be obligated
         to correct any defect which has no material adverse effect on the
         [CONFIDENTIAL PORTION DELETED].

1.4      CLAIMS INFORMATION

         BRAD's obligations hereunder are subject to a Warranty claim to be
         submitted in writing to BRAD's warranty administrator and which shall
         include but not be limited to the following information:

         a)  the identity of the part or item involved, including the Part
             number, serial number if applicable nomenclature and the quantity
             claimed to be defective;

         b)  the manufacturers serial number of the Aircraft from which the part
             was removed;

         c)  the date the claimed defect became apparent to Buyer;


                                       14


<PAGE>   103

         d)  the total flight hours (and cycles if applicable) accrued on the
             part at the time the claimed defect became apparent to Buyer; and

         e)  a description of the claimed defect and the circumstances
             pertaining thereto.

1.5      BRAD'S APPROVAL

         Within ten (10) working days following receipt of Buyer's Warranty
         claim for a defect accompanied by Buyer's request for permission to
         correct a Defect, BRAD shall notify Buyer of its decision to the
         request. Approval under this paragraph shall not constitute a
         determination as to the existence of a defect as described in paragraph
         1.1 above.

1.6      TIMELY CORRECTIONS

         BRAD shall make the repair, replacement or rework, following receipt of
         the defective part or item, with reasonable care and dispatch.

1.7      [CONFIDENTIAL PORTION DELETED]

         For [CONFIDENTIAL PORTION DELETED] shall establish a reasonable
         estimate for the [CONFIDENTIAL PORTION DELETED] for the [CONFIDENTIAL
         PORTION DELETED] and, if the [CONFIDENTIAL PORTION DELETED] performed
         by [CONFIDENTIAL PORTION DELETED] shall [CONFIDENTIAL PORTION DELETED]
         or for [CONFIDENTIAL PORTION DELETED] whichever is less, for the
         [CONFIDENTIAL PORTION DELETED] and to [CONFIDENTIAL PORTION DELETED].
         Such [CONFIDENTIAL PORTION DELETED] shall be based upon [CONFIDENTIAL
         PORTION DELETED], subject to annual review and adjustment of such
         [CONFIDENTIAL PORTION DELETED] rate as mutually agreed; provided,
         however, that this amount shall not exceed [CONFIDENTIAL PORTION
         DELETED].

1.8      APPROVAL, AUDIT, TRANSPORTATION AND WAIVER

         All Warranty claims shall be subject to audit and approval by BRAD.
         BRAD will use reasonable efforts to advise in writing the disposition
         of Buyer's Warranty claim within thirty (30) days following the receipt
         of the claim, and of the defective BRAD Part if required to support the
         claim.

1.9      LIMITATIONS

         1.9.1   BRAD shall be relieved of and shall have no obligation or
                 liability under this Warranty if:

                 a)  the [CONFIDENTIAL PORTION DELETED] were [CONFIDENTIAL
                     PORTION DELETED] with [CONFIDENTIAL PORTION DELETED],
                     unless [CONFIDENTIAL PORTION DELETED] furnishes reasonable
                     evidence acceptable to [CONFIDENTIAL PORTION DELETED] that
                     such [CONFIDENTIAL PORTION DELETED] or

                 b)  the [CONFIDENTIAL PORTION DELETED] were [CONFIDENTIAL
                     PORTION DELETED] or [CONFIDENTIAL PORTION DELETED] in
                     Attachment A of Exhibit E and the manufacturer's
                     documentation furnished to [unless [CONFIDENTIAL PORTION
                     DELETED] furnishes reasonable evidence acceptable to
                     [CONFIDENTIAL PORTION DELETED] that such [CONFIDENTIAL
                     PORTION DELETED] or [CONFIDENTIAL PORTION DELETED] was not
                     a [CONFIDENTIAL PORTION DELETED]; or

                 c)  the [CONFIDENTIAL PORTION DELETED] were [CONFIDENTIAL
                     PORTION DELETED] under normal [CONFIDENTIAL PORTION
                     DELETED], unless [CONFIDENTIAL PORTION DELETED] furnishes
                     reasonable evidence acceptable to [CONFIDENTIAL PORTION
                     DELETED] that such [CONFIDENTIAL PORTION DELETED] was not a
                     [CONFIDENTIAL PORTION DELETED]; or

                 d)  [CONFIDENTIAL PORTION DELETED] does not


                                       15


<PAGE>   104

                     1)   report the [CONFIDENTIAL PORTION DELETED] in writing
                          to [CONFIDENTIAL PORTION DELETED] following such
                          [CONFIDENTIAL PORTION DELETED], and

                     2)   retain the [CONFIDENTIAL PORTION DELETED] claimed to
                          be [CONFIDENTIAL PORTION DELETED] until advised by
                          [CONFIDENTIAL PORTION DELETED] in order for BRAD to
                          finalize its evaluation of the [CONFIDENTIAL PORTION
                          DELETED] or to otherwise dispose of such [CONFIDENTIAL
                          PORTION DELETED] or

                 e)  [CONFIDENTIAL PORTION DELETED] does not submit reasonable
                     proof to [CONFIDENTIAL PORTION DELETED] within
                     [CONFIDENTIAL PORTION DELETED] after the [CONFIDENTIAL
                     PORTION DELETED] becomes apparent that the [CONFIDENTIAL
                     PORTION DELETED] is due to a matter covered within
                     [CONFIDENTIAL PORTION DELETED]; or

                 f)  [CONFIDENTIAL PORTION DELETED] does not allow [CONFIDENTIAL
                     PORTION DELETED] reasonable opportunity to be present
                     during the [CONFIDENTIAL PORTION DELETED] and [CONFIDENTIAL
                     PORTION DELETED] of the [CONFIDENTIAL PORTION DELETED]
                     claimed to be [CONFIDENTIAL PORTION DELETED].

         1.9.2   The above warranties do not apply to Buyer Furnished Equipment.

1.10     NORMAL USAGE

         Normal wear and tear and the need for regular maintenance and overhaul
         shall not constitute a defect or failure under this Warranty.

1.11     OVERHAUL OF WARRANTY PARTS

         BRAD's liability for a BRAD Part which has a defect and is overhauled
         by Buyer within the Warranty Period shall be limited only to that
         portion of the labour and material replacement related to the defect.

1.12     NO FAULT FOUND

         In the event that a BRAD Part returned under a Warranty claim is
         subsequently established to be serviceable then BRAD shall be entitled
         to charge and recover from Buyer any reasonable costs incurred by BRAD
         in connection with such Warranty claim. Providing however, in the event
         that repetitive in-service failure occurs on the particular BRAD Part
         which is subsequently identified by BRAD on a repeated basis, to be "no
         fault found" then BRAD and Buyer shall discuss and mutually agree a
         course of further action to help identify the problem. In the event the
         fault is ultimately confirmed to be a legitimate Warranty claim then
         the above mentioned costs incurred by BRAD and charged to Buyer shall
         be waived.

ARTICLE 2 - VENDOR WARRANTIES

2.1      WARRANTIES FROM VENDORS

         The Warranty provisions of this Exhibit F apply to BRAD Parts only.
         However, BRAD has made or shall make reasonable efforts to obtain
         [CONFIDENTIAL PORTION DELETED]. Except as specifically provided under
         this Article 2, [CONFIDENTIAL PORTION DELETED] and a matter as between
         [CONFIDENTIAL PORTION DELETED] and [CONFIDENTIAL PORTION DELETED].

2.2      VENDOR WARRANTY BACKSTOP

         For those [CONFIDENTIAL PORTION DELETED] installed on the Aircraft at
         the Delivery Date or subsequently purchased through [CONFIDENTIAL
         PORTION DELETED] in the event the parties agree that a [CONFIDENTIAL
         PORTION DELETED] is in default in the performance of any material
         obligation under any applicable warranty obtained by [CONFIDENTIAL
         PORTION DELETED] pursuant to Article 2.1 above, the warranties and all
         other terms and conditions of Article 1 shall become applicable as if
         the [CONFIDENTIAL PORTION DELETED] had


                                       16


<PAGE>   105

         been a [CONFIDENTIAL PORTION DELETED] except that the warranty period
         shall be the Warranty Period as set forth herein or by the
         [CONFIDENTIAL PORTION DELETED], whichever is shorter and all
         transportation costs associated with the [CONFIDENTIAL PORTION DELETED]
         shall be borne by [CONFIDENTIAL PORTION DELETED].

ARTICLE 3 - SERVICE LIFE POLICY

3.1      APPLICABILITY

         The Service Life Policy ("SLP") described in this Article 3 shall apply
         if fleetwide and repetitive failures occur in any Covered Component
         which is defined in Article 3.7 below.

3.2      TERM

         3.2.1   Should such [CONFIDENTIAL PORTION DELETED] occur in any
                 [CONFIDENTIAL PORTION DELETED] following delivery of the
                 Aircraft containing such [CONFIDENTIAL PORTION DELETED] shall,
                 as promptly as practicable and at its option;

                 a)  [CONFIDENTIAL PORTION DELETED] or

                 b)  furnish a [CONFIDENTIAL PORTION DELETED].

3.3      PRICE

         Any Covered Component which BRAD is required to furnish under this SLP
         shall be provided for at a priced calculated in accordance with the
         following formula:

         P       =        [CONFIDENTIAL PORTION DELETED]
Where:

         P   =   Price of Covered Component [CONFIDENTIAL PORTION DELETED];
         C   =   [CONFIDENTIAL PORTION DELETED];
         T   =   [CONFIDENTIAL PORTION DELETED]

3.4      CONDITIONS AND LIMITATIONS

         3.4.1   The following general conditions and limitations shall apply to
                 the SLP:

                 a)  the [CONFIDENTIAL PORTION DELETED] for the return, if
                     practicable, of any [CONFIDENTIAL PORTION DELETED]necessary
                     for [CONFIDENTIAL PORTION DELETED];

                 b)  [CONFIDENTIAL PORTION DELETED] obligation under this SLP
                     are conditional upon the submission of [CONFIDENTIAL
                     PORTION DELETED];

                 c)  [CONFIDENTIAL PORTION DELETED] shall report any
                     [CONFIDENTIAL PORTION DELETED] in writing to [CONFIDENTIAL
                     PORTION DELETED] after such failure becomes evident;
                     failure to give this required notice shall excuse BRAD from
                     all obligations with respect to such failure;

                 d)  the provisions of Article 1.10 of the Warranty (except for
                     subparagraphs d. and e. thereof) are incorporated by this
                     reference and shall condition BRAD's obligations under this
                     SLP with respect to any Covered Component;

                 e)  BRAD's obligations under this SLP shall not apply to
                     any [CONFIDENTIAL PORTION DELETED]; the provisions of this
                     subparagraph shall not apply in the event that Buyer
                     furnishes reasonable evidence acceptable to [CONFIDENTIAL
                     PORTION DELETED] that such failure was not caused by
                     [CONFIDENTIAL PORTION DELETED];


                                       17


<PAGE>   106



                 f)  this SLP shall not apply to a failure of a [CONFIDENTIAL
                     PORTION DELETED] if [CONFIDENTIAL PORTION DELETED] that
                     such [CONFIDENTIAL PORTION DELETED] may not reasonably be
                     expected to occur on a f[CONFIDENTIAL PORTION DELETED] and

                 g)  this SLP shall not apply to a [CONFIDENTIAL PORTION
                     DELETED] where the f[CONFIDENTIAL PORTION DELETED].

3.5      COVERAGE

         This SLP is neither a warranty, performance guarantee nor an agreement
         to modify the Aircraft to conform to new developments in design and
         manufacturing art. BRAD's obligation is only to provide correction
         instructions to correct a Covered Component or furnish replacement at a
         reduced price as provided in this SLP.

3.6      ASSIGNMENT

         Buyer's rights under this SLP shall not be assigned, sold, leased,
         transferred or otherwise alienated by contract, operation of law or
         otherwise, without BRAD's prior written consent. Any unauthorized
         assignment, sale, lease, transfer, or other alienation of Buyer's
         rights under the SLP shall immediately void all of BRAD's obligations
         under the SLP.

3.7      COVERED COMPONENT

         Only those items or part thereof listed in Attachment A to this Exhibit
         F shall be deemed to be a Covered Component, and subject to the
         provisions of this SLP.

ARTICLE 4 - GENERAL

4.1      It is agreed that BRAD shall not be obligated to provide to Buyer any
         remedy which is a duplicate of any other remedy which has been provided
         to Buyer under any other part of this Exhibit F.

If the foregoing correctly sets forth your understanding of our agreement with
respect to the above matters, please indicate your acceptance and agreement
below.

Yours truly

Bombardier Regional Aircraft Division


- -------------------------------
Paul H. Francoeur,
Vice-President, Contracts

ACCEPTED AND AGREED TO this      day of March, 1995

Mesa Airlines, Inc.

By:
       -----------------------------------
Title:
       -----------------------------------

                                       18


<PAGE>   107

                            EXHIBIT F - ATTACHMENT 1
                               COVERED COMPONENTS
                                     DASH-8

AIRFRAME COMPONENTS

1.       WING
         a)      [CONFIDENTIAL PORTION DELETED]
         b)      [CONFIDENTIAL PORTION DELETED]
         c)      [CONFIDENTIAL PORTION DELETED]
         d)      [CONFIDENTIAL PORTION DELETED]
         e)      [CONFIDENTIAL PORTION DELETED]
         f)      [CONFIDENTIAL PORTION DELETED]
         g)      [CONFIDENTIAL PORTION DELETED]
         h)      [CONFIDENTIAL PORTION DELETED]

2.       FUSELAGE
         a)      [CONFIDENTIAL PORTION DELETED]
         b)      [CONFIDENTIAL PORTION DELETED].
         c)      [CONFIDENTIAL PORTION DELETED]
         d)      [CONFIDENTIAL PORTION DELETED]
         e)      [CONFIDENTIAL PORTION DELETED]
         f)      [CONFIDENTIAL PORTION DELETED]

NOTE:    [CONFIDENTIAL PORTION DELETED]
         g)      [CONFIDENTIAL PORTION DELETED]

3.       VERTICAL STABILIZER [CONFIDENTIAL PORTION DELETED]
         a)      [CONFIDENTIAL PORTION DELETED]
         b)      [CONFIDENTIAL PORTION DELETED]
         c)      [CONFIDENTIAL PORTION DELETED]
         d)      [CONFIDENTIAL PORTION DELETED]
         e)      [CONFIDENTIAL PORTION DELETED]
         f)      [CONFIDENTIAL PORTION DELETED]
         g)      [CONFIDENTIAL PORTION DELETED]

4.       HORIZONTAL STABILIZER
         a)      [CONFIDENTIAL PORTION DELETED]
         b)      [CONFIDENTIAL PORTION DELETED]
         c)      [CONFIDENTIAL PORTION DELETED]
         d)      [CONFIDENTIAL PORTION DELETED]
         e)      [CONFIDENTIAL PORTION DELETED]

LANDING GEAR COMPONENTS

1.       MAIN GEAR
         a)      [CONFIDENTIAL PORTION DELETED]
         b)      [CONFIDENTIAL PORTION DELETED]
         c)      [CONFIDENTIAL PORTION DELETED]
         d)      [CONFIDENTIAL PORTION DELETED]

2.       NOSE GEAR
         a)      [CONFIDENTIAL PORTION DELETED]
         b)      [CONFIDENTIAL PORTION DELETED]
         c)      [CONFIDENTIAL PORTION DELETED]
         d)      [CONFIDENTIAL PORTION DELETED]
         (e)     [CONFIDENTIAL PORTION DELETED]


                                       19


<PAGE>   108

March 24, 1995
Our Ref: B95-7701-MJR-010

Mesa Airlines, Inc.
2325 East 30th
Farmington, New Mexico
U.S.A. 87401
Attention: Mr. Larry Risley, Chairman

Gentlemen:
RE: LETTER AGREEMENT NO. B95-7701-MJR-010  (CONFIDENTIAL PORTION DELETED]

Reference is made to Purchase Agreement No. B95-7701-PA-299 (the "Agreement")
between Bombardier, Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Airlines, Inc. ("Buyer") for the sale of twenty-five
(25) DHC-8-200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

All terms herein and in the Agreement and not defined herein shall have the same
meanings as in the Agreement.

It is acknowledged that [CONFIDENTIAL PORTION DELETED] has leased [CONFIDENTIAL
PORTION DELETED] from[CONFIDENTIAL PORTION DELETED]. [CONFIDENTIAL PORTION
DELETED] has indicated a desire to install [CONFIDENTIAL PORTION DELETED].

The price of [CONFIDENTIAL PORTION DELETED] is [CONFIDENTIAL PORTION DELETED]
and the price of [CONFIDENTIAL PORTION DELETED] is [CONFIDENTIAL PORTION
DELETED].

Upon firming of the Agreement, [CONFIDENTIAL PORTION DELETED] will [CONFIDENTIAL
PORTION DELETED] a [CONFIDENTIAL PORTION DELETED] for a total amount of
[CONFIDENTIAL PORTION DELETED] which may be used by [CONFIDENTIAL PORTION
DELETED] on or before [CONFIDENTIAL PORTION DELETED].

If [CONFIDENTIAL PORTION DELETED] elects not to [CONFIDENTIAL PORTION DELETED],
this [CONFIDENTIAL PORTION DELETED] may be [CONFIDENTIAL PORTION DELETED] the
[CONFIDENTIAL PORTION DELETED] or [CONFIDENTIAL PORTION DELETED] relating to
[CONFIDENTIAL PORTION DELETED].

If the [CONFIDENTIAL PORTION DELETED] is used to [CONFIDENTIAL PORTION DELETED]
or is used against the [CONFIDENTIAL PORTION DELETED] or for [CONFIDENTIAL
PORTION DELETED] relating to [CONFIDENTIAL PORTION DELETED], then the
[CONFIDENTIAL PORTION DELETED] as detailed in [CONFIDENTIAL PORTION DELETED]
will be [CONFIDENTIAL PORTION DELETED].

If the foregoing correctly sets forth your understanding of our agreement with
respect to the above matters, please indicate your acceptance and agreement
below.

Yours truly,

Bombardier Regional Aircraft Inc.

- -------------------------
Paul H. Francoeur
Vice-President, Contracts

ACCEPTED AND AGREED TO:
this            day of March, 1995
     ----------

MESA AIRLINES, Inc.

By:
       -----------------------------------
Title:
       -----------------------------------


                                       1

<PAGE>   109

March 24, 1995

Mesa Airlines, Inc.,
2325 East 30th,
Farmington, New Mexico.
U.S.A. 87401

Attention: Mr. Larry Risley, Chairman

Gentlemen,

RE: LETTER AGREEMENT NO. B95-7701-MJR-011  (RE: [CONFIDENTIAL PORTION DELETED])

Reference is made to Purchase Agreement No. B95-7701-PA-299 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Airlines, Inc. ("Buyer") for the sale of twenty-five
(25) DHC-8 Series 200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

All terms used herein and in the Agreement not defined herein, shall have the
same meaning as in the Agreement.

1.     BRAD and Buyer acknowledge that [CONFIDENTIAL PORTION DELETED] currently
has on lease a number of [CONFIDENTIAL PORTION DELETED]. [CONFIDENTIAL PORTION
DELETED] in regards to [CONFIDENTIAL PORTION DELETED] these [CONFIDENTIAL
PORTION DELETED] which [CONFIDENTIAL PORTION DELETED] is currently [CONFIDENTIAL
PORTION DELETED], such [CONFIDENTIAL PORTION DELETED] to be chosen within
[CONFIDENTIAL PORTION DELETED] of the execution of the Agreement from
[CONFIDENTIAL PORTION DELETED].

2.     [CONFIDENTIAL PORTION DELETED] shall [CONFIDENTIAL PORTION DELETED] in
regard to [CONFIDENTIAL PORTION DELETED] of the above-mentioned [CONFIDENTIAL
PORTION DELETED] upon execution of the Agreement and the [CONFIDENTIAL PORTION
DELETED] upon [CONFIDENTIAL PORTION DELETED] the delivery of [CONFIDENTIAL
PORTION DELETED]. Should [CONFIDENTIAL PORTION DELETED] wish to delay passage of
the [CONFIDENTIAL PORTION DELETED]to [CONFIDENTIAL PORTION DELETED] by reason of
retaining some or all of the [CONFIDENTIAL PORTION DELETED] in service, then
Buyer and BRAD will agree on an alternate schedule for [CONFIDENTIAL PORTION
DELETED].

3.     [CONFIDENTIAL PORTION DELETED] in each case is subject to the following
return conditions:

         -the [CONFIDENTIAL PORTION DELETED] to remain on [CONFIDENTIAL PORTION
DELETED] until a [CONFIDENTIAL PORTION DELETED] or [CONFIDENTIAL PORTION
DELETED]is located

         -all records must be in accordance with FAR 91.417 and 121.380 or
equivalent as exists at the time of [CONFIDENTIAL PORTION DELETED].

         -all [CONFIDENTIAL PORTION DELETED] must be supported by the
[CONFIDENTIAL PORTION DELETED]

         -[CONFIDENTIAL PORTION DELETED] must meet all [CONFIDENTIAL PORTION
DELETED] requirements as these exist [CONFIDENTIAL PORTION DELETED].

         -all [CONFIDENTIAL PORTION DELETED] will be completed

4.       The [CONFIDENTIAL PORTION DELETED] is subject to [CONFIDENTIAL PORTION
DELETED] receiving all other documents for the completion of [CONFIDENTIAL
PORTION DELETED] including [CONFIDENTIAL PORTION DELETED] and [CONFIDENTIAL
PORTION DELETED] and that such [CONFIDENTIAL PORTION DELETED]. It is recognized
that [CONFIDENTIAL PORTION DELETED] some [CONFIDENTIAL PORTION DELETED] such as,
and not limited to, [CONFIDENTIAL PORTION DELETED].


                                       1
<PAGE>   110

5.       BRAD and Buyer acknowledge that [CONFIDENTIAL PORTION DELETED] is not a
[CONFIDENTIAL PORTION DELETED]. It is also acknowledged that most, if not all,
of the [CONFIDENTIAL PORTION DELETED] have requirements that [CONFIDENTIAL
PORTION DELETED]. If [CONFIDENTIAL PORTION DELETED] is unable to [CONFIDENTIAL
PORTION DELETED] or other significant [CONFIDENTIAL PORTION DELETED] with
[CONFIDENTIAL PORTION DELETED], then Buyer agrees to [CONFIDENTIAL PORTION
DELETED] with [CONFIDENTIAL PORTION DELETED] by [CONFIDENTIAL PORTION DELETED]
under the [CONFIDENTIAL PORTION DELETED] until such time as [CONFIDENTIAL
PORTION DELETED] is able to effect [CONFIDENTIAL PORTION DELETED] to a
[CONFIDENTIAL PORTION DELETED].

6.       BRAD and Buyer also acknowledge that there may be additional issues
which may increase [CONFIDENTIAL PORTION DELETED] which are discovered during
[CONFIDENTIAL PORTION DELETED] those documents such as [CONFIDENTIAL PORTION
DELETED] which may [CONFIDENTIAL PORTION DELETED] not as yet [CONFIDENTIAL
PORTION DELETED]. In the event such issues arise:

                 (i) [CONFIDENTIAL PORTION DELETED] agrees to [CONFIDENTIAL
PORTION DELETED] to eliminate the effect of such issues on [CONFIDENTIAL PORTION
DELETED], or

                 (ii) If [CONFIDENTIAL PORTION DELETED] are unsuccessful at
[CONFIDENTIAL PORTION DELETED] and consequently [CONFIDENTIAL PORTION DELETED]
than [CONFIDENTIAL PORTION DELETED] are available to [CONFIDENTIAL PORTION
DELETED], then [CONFIDENTIAL PORTION DELETED] will [CONFIDENTIAL PORTION
DELETED] such other [CONFIDENTIAL PORTION DELETED] for those deemed not
acceptable.

7.       [CONFIDENTIAL PORTION DELETED] agrees to store any [CONFIDENTIAL
PORTION DELETED] for which [CONFIDENTIAL PORTION DELETED] the [CONFIDENTIAL
PORTION DELETED] for [CONFIDENTIAL PORTION DELETED] following [CONFIDENTIAL
PORTION DELETED] of such [CONFIDENTIAL PORTION DELETED].

8.       [CONFIDENTIAL PORTION DELETED] agrees that the above [CONFIDENTIAL 
PORTION DELETED] will remain on [CONFIDENTIAL PORTION DELETED] until such time
as these [CONFIDENTIAL PORTION DELETED] are [CONFIDENTIAL PORTION DELETED] or
[CONFIDENTIAL PORTION DELETED] by [CONFIDENTIAL PORTION DELETED].

9.       [CONFIDENTIAL PORTION DELETED] Schedule

 Month, Year                                [CONFIDENTIAL PORTION DELETED]

 TBA                                        TBA

If the foregoing correctly sets forth your understanding of our agreement with
respect to the above matters, please indicate your acceptance and agreement
below.

Yours truly

Bombardier Regional Aircraft Division

- -------------------------------
Paul H. Francoeur,
Vice-President, Contracts

ACCEPTED AND AGREED TO:
this           day of March, 1995
     ---------

Mesa Airlines, Inc.

By:
       -----------------------------------
Title:
       -----------------------------------

                                       2


<PAGE>   111

March 24, 1995

Mesa Airlines Inc.
2325 East 30th
Farmington, New Mexico.
U.S.A. 87401

Attention:  Larry Risley, Chairman

Gentlemen,

RE: LETTER AGREEMENT NO. B95-7701-MJR-012  (RE: [CONFIDENTIAL PORTION DELETED])

Reference is made to Purchase Agreement No. B95-7701-PA-299 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Airlines, Inc. ("Buyer") for the sale of twenty-five
(25) DHC-8 Series 200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

All terms used herein and in the Agreement not defined herein, shall have the
same meaning as in the Agreement.

Attached are the [CONFIDENTIAL PORTION DELETED] related to the [CONFIDENTIAL
PORTION DELETED] [CONFIDENTIAL PORTION DELETED]


ACCEPTED AND AGREED TO:

this            day of March, 1995
     ----------

Mesa Airlines, Inc.

By:
       -----------------------------------
Title:
       -----------------------------------


<PAGE>   112

March 24, 1995

Mesa Airlines, Inc.,
2325 East 30th,
Farmington, New Mexico.
U.S.A. 87401

Attention: Mr. Larry Risley, Chairman

Gentlemen,

RE: LETTER AGREEMENT NO. B95-7701-MJR-013  ([CONFIDENTIAL PORTION DELETED])

Reference is made to Purchase Agreement No. B95-7701-PA-299 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Airlines, Inc. ("Buyer") for the sale of twenty-five
(25) DHC-8 Series 200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

All terms used herein and in the Agreement not defined herein, shall have the
same meaning as in the Agreement.

[CONFIDENTIAL PORTION DELETED]

[CONFIDENTIAL PORTION DELETED] with its [CONFIDENTIAL PORTION DELETED] of
[CONFIDENTIAL PORTION DELETED].

[CONFIDENTIAL PORTION DELETED] will cooperate with [CONFIDENTIAL PORTION
DELETED] to assist in the disposition of such [CONFIDENTIAL PORTION DELETED]
within [CONFIDENTIAL PORTION DELETED] of execution of the Agreement.

In the event that any or all of the [CONFIDENTIAL PORTION DELETED] the end of
such [CONFIDENTIAL PORTION DELETED], [CONFIDENTIAL PORTION DELETED] will then
[CONFIDENTIAL PORTION DELETED] at the following prices:

         a)  [CONFIDENTIAL PORTION DELETED] based on the [CONFIDENTIAL PORTION
DELETED] of the [CONFIDENTIAL PORTION DELETED] if all of these [CONFIDENTIAL
PORTION DELETED] or;

         b)  between [CONFIDENTIAL PORTION DELETED] depending on the mix of
[CONFIDENTIAL PORTION DELETED].

If the foregoing correctly sets forth your understanding of our agreement with
respect to the above matters, please indicate your acceptance and agreement
below.

Yours truly

Bombardier Regional Aircraft Division

- -------------------------------
Paul H. Francoeur,
Vice-President, Contracts

ACCEPTED AND AGREED TO:

this ...... day of March, 1995

Mesa Airlines, Inc.

By:
       -----------------------------------
Title:
       -----------------------------------

<PAGE>   113


March 24, 1995


Mesa Airlines, Inc.,
2325 East 30th,
Farmington, New Mexico.
U.S.A. 87401

Attention: Mr. Larry Risley, Chairman

Gentlemen,

RE: LETTER AGREEMENT NO. B95-7701-MJR-014   (RE: TRADE-IN OF DASH-8 SERIES 100
AIRCRAFT)

Reference is made to Purchase Agreement No. B95-7701-PA-299 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Airlines, Inc. ("Buyer") for the sale of twenty-five
(25) DHC-8 Series 200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

All terms used herein and in the Agreement not defined herein, shall have the
same meaning as in the Agreement.

SERIES 100 TRADE IN AIRCRAFT

Quantity and Price

- -BRAD will take in [CONFIDENTIAL PORTION DELETED]


Other Conditions
[CONFIDENTIAL PORTION DELETED]

Payment and Delivery Schedule
[CONFIDENTIAL PORTION DELETED]
It is currently envisaged that these aircraft are to be available in March 1995.

<PAGE>   114

If the foregoing correctly sets forth your understanding of our agreement with
respect to the above matters, please indicate your acceptance and agreement
below.

Yours truly

Bombardier Regional Aircraft Division

_______________________________
Paul H. Francoeur
Vice-President, Contracts

ACCEPTED AND AGREED TO:
this ...... day of March, 1995

Mesa Airlines, Inc.

By:    ___________________________________

Title: ____________________________________


<PAGE>   115


March 24, 1995


Mesa Airlines, Inc.,
2325 East 30th,
Farmington, New Mexico.
U.S.A. 87401

Attention: Mr. Larry Risley, Chairman

Gentlemen,

RE: LETTER AGREEMENT NO. B95-7701-MJR-015 [CONFIDENTIAL PORTION DELETED]


Reference is made to Purchase Agreement No. B95-7701-PA-299 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Airlines, Inc. ("Buyer") for the sale of twenty-five
(25) DHC-8 Series 200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

All terms used herein and in the Agreement not defined herein, shall have the
same meaning as in the Agreement.

SERIES 300 TRADE-IN AIRCRAFT

Quantity and Price

BRAD will take in [CONFIDENTIAL PORTION DELETED]


Maintenance Reserves
[CONFIDENTIAL PORTION DELETED]

Return Conditions
[CONFIDENTIAL PORTION DELETED]
It is understood that these aircraft will meet the following return standards:

Other Conditions
[CONFIDENTIAL PORTION DELETED]

<PAGE>   116

The trade-in commitment is subject to BRAD receiving all other documents for
the completion of BRAD's due diligence of the lease of Serial Number 279,
[CONFIDENTIAL PORTION DELETED] and that such due diligence does not adversely
affect BRAD.

Payment and Delivery Schedule
[CONFIDENTIAL PORTION DELETED]

On-Going Support
[CONFIDENTIAL PORTION DELETED]

Return Schedule
[CONFIDENTIAL PORTION DELETED]

If the foregoing correctly sets forth your understanding of our agreement with
respect to the above matters, please indicate your acceptance and agreement
below.

Yours truly

Bombardier Regional Aircraft Division

_______________________________
Paul H. Francoeur
Vice-President, Contracts

ACCEPTED AND AGREED TO:
this ...... day of March, 1995
Mesa Airlines, Inc.

By:    ___________________________________

Title: ____________________________________


<PAGE>   117

March 24, 1995
Our Ref:  B95-7701-MJR-016

Mesa Airlines, Inc.
2325 East 30th
Farmington, New Mexico
U.S.A. 87401

ATTENTION: MR. LARRY RISLEY

Gentlemen:

RE:  LETTER AGREEMENT NO. B95-7701-MJR-016

Reference is made to Purchase Agreement No.B95-7701-PA-299 (the "Agreement")
between Bombardier Inc. represented by its Bombardier Regional Aircraft Division
("BRAD") and Mesa Airlines, Inc. ("Buyer") for the sale of Twenty-Five (25)
DHC-8-200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

All terms used herein and in the Agreement and not defined herein, shall have
the same meanings as in the Agreement.

If Buyer has not obtained a commitment satisfactory to it for financing the
purchase of the Aircraft by March 31, 1995, which shall be set forth in Letter
Agreement No. [CONFIDENTIAL PORTION DELETED], [CONFIDENTIAL PORTION DELETED]
may, upon written notice given to [CONFIDENTIAL PORTION DELETED] within
[CONFIDENTIAL PORTION DELETED] of such date, [CONFIDENTIAL PORTION DELETED] The
[CONFIDENTIAL PORTION DELETED] in the amount of [CONFIDENTIAL PORTION DELETED]
as set forth in [CONFIDENTIAL PORTION DELETED] will become due and payable upon
the execution of [CONFIDENTIAL PORTION DELETED].

If the foregoing correctly sets forth your understanding of our agreement with
respect to the above matters, please indicate your acceptance and agreement
below.

Yours truly,

Bombardier Inc.


- ---------------------------
Paul H. Francoeur
Vice-President, Contracts

ACCEPTED AND AGREED TO:

this 24th day of March, 1995


Mesa Airlines, Inc.

Title:
       ---------------------------------
Date:
       ---------------------------------

<PAGE>   118

Date:  March 24, 1995
Our Ref:  B95-7701-MJR-017

Mesa Airlines, Inc.
2325 East 30th,
Farmington New Mexico
U.S.A. 87401

Attention: Mr. Larry Risley, Chairman

Gentlemen:

RE:  LETTER AGREEMENT NO. B95-7701-MJR-017

Reference is made to Purchase Agreement No. B95-7701-PA-299 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Airlines, Inc. ("Buyer") for the sale of twenty-five
(25) DHC-8-200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

All terms used herein and in the Agreement and not defined herein, shall have
the same meanings as in the Agreement.

Recitals

Whereas the parties have entered into the Agreement include provisions relating
to pricing of the Aircraft, and whereas the parties wish to specifically enter
into an agreement [CONFIDENTIAL PORTION DELETED], as set out in the provisions
of [CONFIDENTIAL PORTION DELETED].

Whereas with respect to the matters referred to in the preceding paragraph, BRAD
and Mesa have entered into an agreement whereby Mesa [CONFIDENTIAL PORTION
DELETED] allowing [CONFIDENTIAL PORTION DELETED] as well as possible other
[CONFIDENTIAL PORTION DELETED] as set forth in [CONFIDENTIAL PORTION DELETED].

Whereas all [CONFIDENTIAL PORTION DELETED] for the benefit of [CONFIDENTIAL
PORTION DELETED] , and that these [CONFIDENTIAL PORTION DELETED] are
[CONFIDENTIAL PORTION DELETED] to the provisions set forth in this Agreement.

Any and all Data and any other information referred to in the preceding
paragraph and disclosed or provided by [CONFIDENTIAL PORTION DELETED] for the
purpose of obtaining [CONFIDENTIAL PORTION DELETED] provided for in the
Agreement or in Letter Agreement [CONFIDENTIAL PORTION DELETED] shall be
regarded and deemed as "Confidential or Proprietary Information" by
[CONFIDENTIAL PORTION DELETED] and shall not be used or disclosed unless
[CONFIDENTIAL PORTION DELETED] other than [CONFIDENTIAL PORTION DELETED] in the
Agreement or in [CONFIDENTIAL PORTION DELETED].

When such "Confidential or Proprietary Information" is disclosed for the purpose
of [CONFIDENTIAL PORTION DELETED], specific non-disclosures agreements must be
entered into and be binding upon Mesa and any Third Party to whom this
information may have been disclosed, such agreements to be executed
contemporaneously with the disclosure of said Information.

Without prejudice to the generality of the foregoing, all "Confidential
Information" shall;

         (i)     not be used by Mesa otherwise than as contemplated in the
                 Agreement or in [CONFIDENTIAL PORTION DELETED];


                                       1
<PAGE>   119

         (ii)    be protected by Mesa with the same degree of care as Mesa uses
                 to protect its own Confidential or Proprietary Information
                 against public disclosure;

         (iii)   not be disclosed to any personnel of Mesa other than those for
                 who such knowledge is essential for the aforesaid purposes
                 (which personnel must be specified in writing by Mesa and
                 approved by BRAD in advance of disclosure to them) and such
                 disclosure shall be made only under conditions of strict
                 confidentiality

The obligation herein contained by Mesa and its personnel shall continue in full
force and effect whether or not any other agreement to perform work or services
is entered into between Mesa and BRAD or any of its affiliates.

Mesa agrees to have all its personnel and any other Third Parties, (namely any
financial advisors) to whom the Confidential or Proprietary Information is
disclosed execute undertakings of non-disclosure in favour of BRAD, containing
essentially all terms hereof, unless Mesa's personnel have already executed a
non-disclosure agreement in favour of Mesa and same is acceptable to BRAD.



Yours truly

Bombardier Regional Aircraft Inc.


- -------------------------
Walter A. Galloway
Director, Dash 8 Contracts

ACCEPTED AND AGREED TO:

this           day of March,1995

MESA AIRLINES, Inc.

By:
       -----------------------------------
Title:
       -----------------------------------


                                       2


<PAGE>   120

March 24, 1995


Mesa Airlines, Inc.
2325 East 30th Street
Farmington, New Mexico  87401

Attention: Mr. Larry Risley, Chairman

Gentlemen:

RE: LETTER AGREEMENT NO. B95-7701-MJR-018

Reference is made to the Purchase Agreement No. B95-7701-PA-299 (the
"Agreement") between Bombardier, Inc., represented by its Bombardier Regional
Aircraft Division ("BRAD") and Mesa Airlines, Inc. ("Buyer") for the sale of
twenty-five (25) DHC-8-200 aircraft (the "Aircraft").

This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters summarized below.

All terms used herein and in the Agreement and not defined herein, shall have
the same meaning as in the Agreement.

Notwithstanding anything to the contrary found in the Agreement, [CONFIDENTIAL
PORTION DELETED] will provide to [CONFIDENTIAL PORTION DELETED].  [CONFIDENTIAL
PORTION DELETED] expense, these [CONFIDENTIAL PORTION DELETED].

If the foregoing is acceptable to you, please so indicate below.

Yours truly,

BOMBARDIER REGIONAL AIRCRAFT DIVISION

- -------------------------------
Paul H. Francoeur
Vice-President, Contracts

Accepted and agreed to:
Mesa Airlines, Inc.

By:
       -----------------------------------
         Wm. Stephen Jackson
         Chief Financial Officer


                                      -1-



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