SHARES PLEDGE

between

GASI ENGINE SERVICES CORPORATION, a corporation organized under the laws of
the state of Delaware and having its principal office at 4590 N.W. 36th St.,
Bldg 23 Miami, Florida 33122 (hereinafter referred to as THE PLEDGOR);

                    and

THE BANK OF NEW YORK COMMERCIAL CORPORATION, having an office at 1290 Avenue
of the Americas, New York, New York 10104 as agent under the Sharing Agreement
(as hereafter defined) for the Lenders, Trustee and the Holders of Securities
(as each is defined therein) (in such capacity, THE AGENT).
             ________________


CONSIDERING THAT the Agent has required the transfer to it or its nominees of
the Pledged Securities (as hereinafter defined) and the execution by the Company
and Pledgor of this Deed, in security of the obligations of the Company and
Pledgor to (INTER ALIA) the Banks under the Agreement and the Note Holders
under the Indenture (all as defined below).

NOW IT IS HEREBY PROVIDED AND DECLARED THAT:

1.          INTERPRETATION
(1)         In this Deed:

            AGREEMENTS means the Fourth Amended and Restated Revolving Credit
            and Security Agreement dated as of this date between INTER ALIA
            the Company and Pledgor, Greenwich Air Services, Inc., Gas Turbine
            Corporation, Greenwich Turbine, Inc., GASI Engine Services
            Corporation, McAllen Components, L.P. and Greenwich Air Services -
            Texas, L.P. the Lenders (as defined therein), and the Agent (the
            Loan Agreement; and (b) the Indenture, dated as of this date between
            Greenwich Air Services, Inc., the Subsidiary guarantors (as defined
            therein) and the Note Trustee (the INDENTURE);







            LENDERS shall mean: (a) the Lenders as defined in the Agreement
            and (b) the holders of the Securities as defined in the Indenture;

            DEFAULT RATE is as defined in Section 3.1 of the Agreement;

            GUARANTY is the guaranty dated as of this date issued by Pledgor
            to Agent of the obligations of Greenwich Caledonian Limited
            (Caledonian) to the Lenders under the Receivable Credit Agreement
            dated as of this date among Caledonian, Agent and Lenders.

            INDEBTEDNESS is as defined in each Agreement and shall include,
            without limitation, the Securities held by the Note Holders (as
            herein defined);

            NOTE HOLDERS are the holders of ____% senior notes of Greenwich
            Air Services, Inc. due 2006 (the Notes) issued pursuant to the
            Indenture referred to in the definition of the Agreement;

            NOTE TRUSTEE is American Stock Transfer & Trust Company;

            PLEDGED SECURITIES means the securities described in paragraph (a)
            of the SCHEDULE hereto which are to be transferred, or which have
            been transferred, to the Agent or its nominees, and the securities,
            monies, assets, rights and powers described in paragraphs (b) and
            (c) of the SCHEDULE hereto and all other securities (if any) which
            are hereafter transferred or delivered to the Agent to be held
            subject to the terms and conditions of this Deed; and

            SECURED OBLIGATIONS shall mean and include:

            (i) any and all of Pledgor's indebtedness and/or liabilities to the
            Agent or the Lenders of every kind, nature and description, direct
            or indirect, secured or unsecured, joint, several, joint and
            several, absolute or contingent, due or to become due, now existing
            or hereafter arising, contractual or tortious, liquidated or
            unliquidated, under the Loan Agreement and the Guaranty and all
            obligations of the Company and Pledgor to the Agent or Lenders to
            perform acts or refrain from taking any action under the Loan
            Agreement; and

            (ii) any and all of the Company's and Pledgor's Indebtedness and/or
            liabilities to the Agent, the Note Trustee or the Note Holders of
            every kind, nature and description, direct or indirect, secured or
            unsecured,


                                     -2-




            joint, several, joint and several, absolute and contingent, due or
            to become due, now existing or hereafter arising, contractual or
            tortious, liquidated or unliquidated, under the Indenture, the
            Subsidiary Guarantees and the Notes;

            SHARING AGREEMENT means the Collateral Sharing Agreement dated as
            of this date among Agent, Note Trustee and Agent, as collateral
            agent.

(2)         Unless otherwise stated, terms and expressions defined in the
            Agreement shall have the same meaning herein.

(3)         The expressions THE COMPANY AND PLEDGOR, THE AGENT, THE LENDERS,
            the Note Trustee and the Note Holders shall include the successors,
            assignees and transferees of the Company and Pledgor, the Agent, the
            Lenders; the Note Trustee and the Note Holders and, in the case of
            the Agent shall include any person for the time being the Agent
            under the Sharing Agreement.

(4)         Unless any provision of this Deed or the context otherwise requires,
            any reference herein to any statute or any section of any statute
            shall be deemed to include a reference to any statutory modification
            or re-enactment thereof for the time being in force.

(5)         In this Deed the singular includes the plural and vice versa.
            Clause headings are for convenience of reference only.

(6)         Any reference in this Deed to a document of any kind whatsoever
            (including this Deed) is to that document as amended or varied or
            supplemented or novated or substituted from time to time.

(7)         Except as otherwise expressly provided for above, the provisions of
            the Agreement shall apply hereto, MUTATIS MUTANDIS, as if the same
            had been set out in full herein.

2.          OBLIGATION TO PAY

            The Company and Pledgor undertakes to the Agent that it will pay or
            discharge the Secured Obligations to the Agent and/or the Note
            Holders; as the case may be direct on the due date therefore in
            accordance with the terms of the Agreement, the Indenture or any
            other document evidencing the Indebtedness of the Company and
            Pledgor.

3.          SECURITY



                                     -3-




(1)         In security of the Secured Obligations the Company and Pledgor
            hereby assigns to the Agent as for the Lenders, the Note Trustee and
            the Note Holders its whole right, title, interest and benefit in and
            to the Pledged Securities.

(2)         The Agent hereby acknowledges that, notwithstanding any transfer or
            delivery to EX FACIE absolutely of Pledged Securities and any
            registration of Pledged Securities in the name of the Agent or any
            person holding to the order of the Agent, or the custody thereof by
            the Agent of any such person, Pledged Securities are and shall truly
            be held by it as security for the payment of the Secured Obligations
            on the terms and conditions of this Deed.

4.          UNDERTAKINGS

(1)         The Company and Pledgor undertakes forthwith to transfer to the
            Agent or its nominees, by duly stamped transfer, such of the Pledged
            Securities as at the date hereof have not been so transferred and to
            issue certificates representing the Pledged Securities in the name
            of the Agent or such nominee as appropriate.

(2)         The Company and Pledgor shall for so long as this security is in
            force pay duly and promptly all calls which may from time to time be
            made in respect of any unpaid monies under any Pledged Securities
            and/or any other monies which it may lawfully be required to pay in
            respect of any Pledged Securities, and in case of default the Agent
            may, if it thinks fit, make such payments on behalf of the Company
            and Pledgor.

(3)         Any monies expended by the Agent under these provisions shall be
            deemed to be properly paid by the Agent, and the Company and Pledgor
            shall reimburse the Agent on demand, and  such monies shall pending
            reimbursement constitute a part of the Secured Obligations.

5.          WARRANTIES

            The Company and Pledgor hereby warrants, represents and undertakes
            that subject to this Deed (a) it is and will remain the sole owner
            of the Pledged Securities, (b) it has not transferred, assigned,
            pledged or in any way encumbered and hereby covenants that it will
            not transfer, assign, pledge or otherwise encumber hereafter the
            whole or any part of the Pledged Securities or any interest therein
            to anyone other than the Agent and (c) the Pledged Securities
            represent and will continue to


                                     -4-




            represent no less than 65% of the share capital of Greenwich
            Caledonian Limited.

6.          VOTING RIGHTS, DIVIDENDS, ETC.

(1)         If the Pledged Securities shall entitle the holder thereof to rights
            to subscribe for any other securities, then the Company and Pledgor
            shall do all acts and things and execute such documents (including
            such deed or deeds supplemental hereto) as the Agent may require so
            as to effect a fixed security in favor of the Agent (as trustee
            aforesaid) over such Pledged Securities when issued.

(2)         Subject to Clauses 6(3) and 8(2) the Company and Pledgor shall be
            entitled to exercise any and all voting rights pertaining to the
            Pledged Securities or any part thereof and to receive and retain any
            and all cash dividends paid in respect of the Pledged Securities in
            accordance with the provisions of the Agreement. If the Agent
            receives due notice not less than 7 days before the proposed
            exercise of any such voting rights by the Company and Pledgor (or
            such lesser period as the Agent may agree), and if the Company and
            Pledgor is entitled hereunder to exercise such rights, the Agent
            shall procure its nominee to execute and deliver such documents as
            the Company and Pledgor may reasonably require in order to enable
            such rights to be so exercised.

(3)         This Deed shall take effect so that:

            (a)   prior to any enforcement of this security all rights attached
                  to the Pledged Securities shall be exercisable only in the
                  interests of the Company and Pledgor in accordance with the
                  Company's and Pledgor's instructions, apart from the exercise
                  of any such right for the purpose of preserving this security
                  in accordance with the provisions hereof; and

            (b)   upon any enforcement of this security all rights attached to
                  the Pledged Securities shall be exercisable by the Agent for
                  the purpose of enforcing this security and otherwise in
                  accordance with Clause 6(3)(a), to the intent that nothing
                  contained herein or in any other Agreements shall give or is
                  intended to have the effect of giving control of Greenwich
                  Caledonian Limited to the Agent or the Lenders, otherwise than
                  on enforcement of this security.



                                     -5-




(4)         The Agent may after notifying the Company and Pledgor of its
            intention to do so, but shall not be obliged to, pay any calls or
            other sums that may be or become due in respect of any of the
            securities for the time being the subject of this Deed (including,
            without limitation, the Pledged Securities) and the Company and
            Pledgor undertakes to pay to the Agent on written demand to the
            Company and Pledgor such sums so paid by the Agent together with
            interest thereon at the Default Rate from the date of demand by the
            Agent to the date of payment by the Company and Pledgor.  Such sums
            and interest shall be secured by this Deed.

7.          LIABILITY TO PERFORM

            It is expressly agreed that, notwithstanding anything to the
            contrary herein contained, the Company and Pledgor shall remain
            liable to observe and perform all of the conditions and obligations
            assumed by it in respect of the Pledged Securities and due Agent
            shall be under no obligation or liability by reason of or arising
            out of this Deed.  The Agent shall not be required in any manner to
            perform or fulfill any obligations of the Company and Pledgor in
            respect of the Pledged Securities.

8.          ENFORCEMENT

(1)         At any time after the occurrence and during the continuance of an
            Event of Default then, if and for so long as the Agent is, or is
            entitled to be registered as the holder of the Pledged Securities in
            the register of members of Greenwich Caledonian Limited this
            security may be enforced, subject to the provisions of the Sharing
            Agreement in the following manner [STANDSTILL?]:

            (a)   the Agent shall become entitled to sell, call in, collect or
                  convert into money any Pledged Securities with full power on
                  giving notice to the Company and Pledgor to such effect to
                  sell any of the same either together or in parcels and either
                  by public auction or private contract and for such
                  consideration (whether in cash, securities or other assets and
                  whether deferred or not) as the Agent may think fit and with
                  full power to buy in or rescind or vary any contract of sale
                  of Pledged Securities or any part thereof and to resell the
                  same without being responsible for any loss which may be
                  occasioned thereby and with full power to compromise and
                  effect compositions and for the purposes aforesaid or any of
                  them to execute and do all such assurances and things as it
                  shall think fit;


                                     -6-




            (b)   the Agent shall become entitled to apply all or any monies
                  received or held by it in respect of the Pledged Securities in
                  respect of the exercise of any of its rights in relation
                  thereto in accordance with Clause 9; and

            (c)   the Company and Pledgor shall on demand execute and do all
                  such transfers, assurances and things which the Agent may
                  require for perfecting its title to any Pledged Securities or
                  for vesting the same in the Agent or its nominees or any
                  purchaser.

(2)         After this security has become enforceable:

            (a)   all rights of the Company and Pledgor to exercise the voting
                  rights which it would otherwise be entitled to exercise and to
                  receive the dividends and other payments which it would
                  otherwise be authorized to receive and retain pursuant to
                  Clause 6(b) shall cease, and, if and so long as the Agent is,
                  or is entitled to be, registered as the holder of the Pledged
                  Securities in the register of members of Greenwich Caledonian
                  Limited all such rights shall thereupon become vested in the
                  Agent which shall have the sole right to exercise such voting
                  rights and to receive and hold as Pledged Securities such
                  dividends and interest payments; and

            (b)   all dividends and other payments which are received by the
                  Company and Pledgor contrary to the provisions of Clause
                  8(2)(a) shall, if and for so long as the Agent is entitled to
                  be registered as the holder of the Pledged Securities in the
                  register of members of Greenwich Caledonian Limited, be
                  received in, and be declared by the Company and Pledgor to be
                  subject to a trust for the benefit of the Agent, and shall be
                  segregated from other funds of the Company and Pledgor and
                  forthwith be paid over to the Agent,

to the intent that the Agent shall be entitled to exercise such rights and
receive such payments only for the purpose of protecting or enforcing the
security constituted hereby.

(3)         The Agent shall incur no liability to the Company and Pledgor in the
            event of an overrealization of Pledged Securities or any of them or
            from any error or omission in the administration thereof.

9.          APPLICATION OF ENFORCEMENT MONIES



                                     -7-




(1)         All monies received by the Agent under or by virtue of this Deed
            following enforcement of the security hereby granted shall be
            applied, subject to the claim of any creditors ranking in priority
            to or PAR PASSU with the claims of the Agent hereunder, in manner
            set out in the Sharing Agreement.

(2)         Nothing contained in this Deed shall limit the right of the Agent
            (and the Company and Pledgor acknowledges that the Agent is so
            entitled) if and for so long as the Agent, in its discretion shall
            consider it appropriate, to place all or any monies arising from the
            enforcement of the security hereby granted into a suspense account,
            without any obligation to apply the same or any part thereof in or
            towards the discharge of any Secured Obligation.

10.         RECONVEYANCE

            Upon payment in full of all Secured Obligations, the Agent shall
            transfer to the Company and Pledgor at the Company's and Pledgor's
            expense, and the Company and Pledgor shall accept the transfer of,
            all Pledged Securities then held by or to the order of the Agent and
            the Agent shall co-operate in procuring the registration of such
            Pledged Securities in the name of the Company and Pledgor or as it
            shall direct.

11.         PROTECTION OF SECURITY

(1)         The security created by this Deed shall be a continuing security
            notwithstanding any settlement of account or other matter or thing
            whatsoever, and in particular (but without prejudice to the
            generality of the foregoing) shall not be considered satisfied by an
            intermediate repayment or satisfaction of part only of the Secured
            Obligations and shall continue in full force and effect until total
            and irrevocable satisfaction of all the Secured Obligation.

(2)         The security created by this Deed shall be in addition to and shall
            not in any way prejudice or be prejudiced by any collateral or other
            security, right or remedy which the Agent may now or at any time
            hereafter hold for all or any part of the Secured Obligations.

(3)         No failure on the part of the Agent or any Lender to exercise and no
            delay on its part in exercising any right, remedy, power or
            privilege under or pursuant to this Deed or any other document
            relating to or securing all or any part of the Secured Obligations
            will operate


                                     -8-




            as a waiver thereof, nor will any single or partial exercise of any
            right or remedy preclude any other or further exercise thereof or
            the exercise of any other right or remedy.  The rights and remedies
            provided in this Deed and any such other document are cumulative and
            not exclusive of any right or remedies provided by law.

(4)         Each of the provisions in this Deed shall be severable and distinct
            from one another and if at any time any one or more of such
            provisions is or becomes or is declared null and void, invalid,
            illegal or unenforceable in any respect under any law or otherwise
            howsoever the validity, legality and unenforceability of the
            remaining provisions hereof shall not in any way be affected or
            impaired thereby.

(5)         If any of the Agent, the Lender, the Note Trustee or the Note
            Holders receives or is deemed to be affected by notice whether
            actual or constructive of any subsequent security or other interest
            affecting any part of the Pledged Securities and/or the proceeds or
            sale thereof, any of the Agent, the Lender, the Note Trustee or the
            Note Holders may open a new account or accounts with the Company and
            Pledgor.  If the Agent or such Lenders does not open a new account
            it shall nevertheless be treated as if it had done so at the time
            when it received or was deemed to have received notice and as from
            that time all payments made to the Agent or such Lender, the Note
            Trustee or the Note Holder shall be credited or be treated as having
            been credited to the new account and shall not operate to reduce the
            amount for which this Deed is security.

(6)         Neither the security created by this Deed nor the rights, powers,
            discretions and remedies conferred upon the Agent by this Deed or by
            law shall be discharged, impaired or otherwise affected by reason
            of:

            (a)   any present or future security, guarantee, indemnity or other
                  right or remedy held by or available to any of Agent, the
                  Lenders, the Note Trustee or the Note Holders being or
                  becoming wholly or in part void, voidable or unenforceable on
                  any ground whatsoever or by any of Agent, the Lenders, the
                  Note Trustee or the Note Holders from time to time exchanging,
                  varying, realizing, releasing or failing to perfect or enforce
                  any of the same; or

            (b)   the Agent or any Lender or the Note Trustee or any Note Holder
                  compounding with, discharging or releasing or varying the
                  liability of, or granting


                                     -9-




                  any time, indulgence or concession to, the Company and Pledgor
                  or any other person or renewing, determining, varying or
                  increasing any accommodation or transaction in any manner
                  whatsoever or concurring in accepting or varying any
                  compromise, arrangement or settlement or omitting to claim or
                  enforce payment from the Company and Pledgor or any other
                  person; or

            (c)   any act or omission which would not have discharged or
                  affected the liability of the Company and Pledgor had it been
                  a principal debtor instead of cautioner or by anything done or
                  omitted which but for this provision might operate to
                  exonerate the Company and Pledgor from the Secured
                  Obligations; or

            (d)   any legal limitation, disability, incapacity or other similar
                  circumstance relating to the Company and Pledgor.

(7)         The Agent shall not be obliged, before exercising any of the rights,
            powers or remedies conferred upon it by or pursuant to this Deed or
            by law, to:

            (a)   take any action or obtain judgment or decree in any Court
                  against the Company and Pledgor;

            (b)   make or file any claims to rank in a winding-up or liquidation
                  of the Company and Pledgor; or

            (c)   enforce or seek to enforce any other security taken, or
                  exercise any right or plea available to the Agent, in respect
                  of any of the Company's and Pledgor's obligations under any
                  document other than this Deed.

12.         FURTHER ASSURANCE

            The Company and Pledgor shall execute and do all such assurances,
            acts and things as the Agent may require for perfecting or
            protecting the security created by or pursuant to this Deed over the
            Pledged Securities or for facilitating the realization of such
            rights and the exercise of all powers, authorities and discretions
            vested in the Agent, and shall, in particular, on demand forthwith
            sign, seal, execute, deliver and complete all transfers,
            assignments, renunciations, mandates, instructions, deeds and
            documents of every kind and do or cause to be done, all acts and
            things of every kind which the Agent may specify by written notice
            to the Company and Pledgor to perfect the interest of the Agent or
            to


                                     -10-




            enable the Agent or the nominees of the Agent to exercise any rights
            or powers attaching to the Pledged Securities or to vest the Pledged
            Securities in the Agent or the nominees of the Agent, or to enable
            the Agent to sell or dispose of the Pledged Securities or otherwise
            to enforce or exercise any rights or powers under or in connection
            with its security.

13.         MANDATE AND ATTORNEY

(1)         The Company and Pledgor hereby irrevocably appoints the Agent to be
            its mandatory and attorney for it and on its behalf and in its name
            or otherwise and as its act or deed to create or constitute, or to
            make any alteration or addition or deletion in or to, any documents
            which the Agent may require for perfecting or protecting the title
            of the Agent to the Pledged Securities or for vesting any of the
            Pledged Securities in the Agent or its nominees or any purchaser and
            to redeliver the same thereafter and otherwise generally to sign,
            seal and deliver and otherwise perfect any fixed security, floating
            charge, transfer, disposition, assignation, security and/or
            assurance or any writing, assurance, document or act which may be
            required or may be deemed proper by the Agent on or in connection
            with any sale, lease, disposition, realization, getting in or other
            enforcement by the Agent of all or any of the Pledged Securities.

(2)         The Company and Pledgor hereby ratifies and confirms and agrees to
            ratify and confirm whatever any such mandatory or attorney shall do
            in the exercise or purported exercise of all or any of the powers,
            authorities and discretions referred to in this Clause 13.

14.         EXPENSES

(1)         The Company and Pledgor binds and obliges itself for the whole
            expenses of completing and enforcing the security hereby granted and
            the expenses of any retrocession or discharge hereof.

(2)         All costs, charges and expenses incurred and all payments made by
            the Agent hereunder in the lawful exercise of the powers hereby
            conferred whether or not occasioned by any act, neglect or default
            of the Company and Pledgor shall carry interest from the date of the
            same being incurred or becoming payable at the Default Rate.  The
            amount of all such costs, charges, expenses and payments and all
            interest thereon and all remuneration payable hereunder shall be
            payable by the Company and Pledgor on demand and shall be a Secured
            Obligation.  All such costs, charges,


                                     -11-




            expenses and payments shall be paid and charged as between the Agent
            and the Company and Pledgor on the basis of a full and unqualified
            indemnity.

15.         INDEMNITY

            The Agent and every attorney, manager, agent or other person
            appointed by the Agent in connection herewith shall be entitled to
            be indemnified out of the Pledged Securities in respect of all
            liabilities and expenses properly incurred by them or him in the
            execution or purported execution of any of the powers, authorities
            or discretions vested in them or him pursuant hereto and against all
            actions, proceedings, costs, claims and demands in respect of any
            matter or thing done or omitted in anywise relating to the Pledged
            Securities, and the Agent may retain and pay all sums in respect of
            the same out of any monies received under the powers hereby
            conferred.

16.         AVOIDANCE OF PAYMENTS

            Any amount which has been paid by a Borrower to the Agent or any
            other Lender or the Note Trustee or any Note Holder and which is, in
            the opinion of the Agent, capable of being reduced or restored or
            otherwise avoided in whole or in part in the liquidation or
            administration of that Borrower, shall not be regarded as having
            been irrevocably paid for the purposes of this Deed.

17.         NOTICES

            All notices, requests, demands and other communications to be given
            under this Deed shall be given and/or deemed to be given in the same
            manner as notices to be given under the Agreement, and the terms of
            Section 14.6 of the Agreement shall apply MUTATIS MUTANDIS to this
            Deed as though that Clause were set out in full herein.

18.         GOVERNING LAW

            This Deed shall be construed and governed in all respects in
            accordance with the law of Scotland.

19.         CONSENT TO REGISTRATION

            A Certificate signed by an authorized officer of the Agent shall, in
            the absence of manifest error, conclusively determine the Secured
            Obligations at any relevant time and shall constitute a balance and
            charge against the Company and Pledgor, and no suspension of a


                                     -12-




            charge or of a threatened charge for payment of the balance so
            constituted shall pass nor any sist of execution thereon be granted
            except on consignation.  The Company and Pledgor consents to the
            registration of this Deed and of any such certificate for
            preservation and execution.

            IN WITNESS WHEREOF, this Shares Pledge has been executed as of the
___ day of June, 1996.

                                    GASI ENGINE SERVICES CORPORATION


                                    By:_____________________________
                                       Title:_______________________


                                    THE BANK OF NEW YORK COMMERCIAL
                                    CORPORATION, as Agent


                                    By:_____________________________
                                       Title:_______________________


                                    GREENWICH TURBINE TEST CORPORATION


                                    By:_____________________________
                                       Title:_______________________


                                    GREENWICH FOREIGN SALES CORPORATION


                                    By:_____________________________
                                       Title:


                                     -13-




                                 THE SCHEDULE

                               PLEDGED SECURITIES



(a)         650,000 fully paid Ordinary "A" Shares of L1 each and 14,345,026
            Ordinary "B" Shares of US $1 each in the capital of Greenwich
            Caledonian Limited (formerly Aviall Limited).

(b)         all other securities of every kind which may at any time, whether
            directly or indirectly, be derived from any kind of the said shares,
            whether by way of bonus, rights, exchange, option, preference,
            capital re-organization or otherwise howsoever; and

(c)         where the context so admits, all monies and assets whatsoever at any
            time accruing on, or payable or receivable in respect of, any of the
            said shares or securities and all voting and other rights and powers
            of any kind at any time attaching to, or exercisable in respect of,
            any of the said shares or securities.

                                       - 14 -