Document:

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                                                                     EXHIBIT 4.9

                 FIRST AMENDMENT TO THE REVOLVING LOAN AGREEMENT

     THIS FIRST AMENDMENT TO THE REVOLVING LOAN AGREEMENT dated as of April 11,
2001 (the "Credit Agreement") is made as of the 30th day of November, 2001,
between AAR CORP. ("AAR"), and LASALLE BANK NATIONAL ASSOCIATION, a national
banking association (the "Bank").

     WHEREAS, AAR and the Bank entered into the Credit Agreement dated April 11,
2001.

     WHEREAS, AAR, and the Bank desire to amend the Credit Agreement as set
forth herein.

     NOW, THEREFORE, in consideration of the mutual promises contained herein,
the parties agree that effective as of the date hereof, the Credit Agreement is
amended as follows:

     1.   Section 10.2, Consolidated Tangible Net Worth shall be amended and
read as follows:

          "10.2 CONSOLIDATED TANGIBLE NET WORTH. The Borrower will maintain at
     all times Consolidated Tangible Net Worth in an amount not less than the
     sum of (a) $210,000,000 plus (b) the net cash proceeds received by the
     Borrower from the sale of any of its capital stock on or after May 31, 2000
     plus (c) an amount equal to the aggregate of one-third of Consolidated Net
     Income earned during each of its fiscal years beginning with its fiscal
     year commencing June 1, 2000, said fiscal years to be taken as one
     accounting period."

     2.   The definition of "Facility Fee" shall be amended and read as follows:

          "FACILITY FEE means a facility fee on the Commitment in an amount
     equal to (a) 0.35% per annum, payable quarterly in advance, when the
     Borrower has an Investment Grade Rating or (b) 0.425% per annum, payable
     quarterly in advance, when the Borrower does not have an Investment Grade
     Rating."

     3.   The definition of "Interest Rate" shall be amended and read as
follows:

          "INTEREST RATE shall mean the Borrower's option of,
          (i)  LIBOR for the relevant Interest Period (rounded upward if
               necessary, to the nearest 1/16 of 1.00%) plus (1) when the
               Borrower has an Investment Grade Rating, 1.25% at all times when
               the Obligations are less than or equal to 60% of the Revolving
               Loan Commitment, and 2.00% at all times when the Obligations
               exceed 60% of the Revolving Loan Commitment; and (2) when the
               Borrower does not have an Investment Grade Rating, 1.525% at all
               times when the Obligations are less than or equal to 60% of the
               Revolving Loan Commitment, and 2.275% at all times

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               when the Obligations exceed 60% of the Revolving Loan Commitment.
               The LIBOR Rate shall be fixed for each Interest Period; or

          (ii) the Prime Rate plus zero % at all times when the Borrower has an
               Investment Grade Rating and 0.50% at all times when the Borrower
               does not have an Investment Grade Rating.

          Provided, however, that in no event shall the Interest Rate be less
          than the highest rate charged at any time by the Borrower's Unsecured
          Lenders."

     4.   The definition of "Maturity Date" shall be amended and read as
          follows:

          "MATURITY DATE shall mean April 10, 2003."

     5.   REPRESENTATIONS AND WARRANTIES.

          5.1. AUTHORIZATION. AAR is duly authorized to execute and deliver this
     First Amendment and is and will continue to be duly authorized to borrow
     monies under the Credit Agreement, as amended hereby, and to perform its
     obligations under the Credit Agreement, as amended hereby.

          5.2. NO CONFLICTS. The execution and delivery of this First Amendment
     and the performance by AAR of its obligations under the Credit Agreement,
     as amended hereby, do not and will not conflict with any provision of law
     or of the articles of incorporation or bylaws of AAR or of any agreement
     binding upon AAR.

          5.3. VALIDITY and Binding Effect. The Credit Agreement, as amended
     hereby, is a legal, valid and binding obligation of AAR, enforceable
     against AAR in accordance with its terms, except as enforceability may be
     limited by bankruptcy, insolvency or other similar laws of general
     application affecting the enforcement of creditors' rights or by general
     principles of equity limiting the availability of equitable remedies.

          5.4. COMPLIANCE WITH CREDIT AGREEMENT. The representation and
     warranties set forth in Section 7 of the Credit Agreement, as amended
     hereby, are true and correct with the same effect as if such
     representations and warranties had been made on the date hereof, with the
     exception that all references to the financial statements shall mean the
     financial statements most recently delivered to the Bank and except for
     such changes as are specifically permitted under the Credit Agreement. In
     addition, AAR has complied with and is in compliance with all of the
     covenants set forth in the Credit Agreement, as amended hereby.

          5.5. NO EVENT OF DEFAULT. As of the date hereof, no Event of Default
     under Section 11 of the Credit Agreement, as amended hereby, or event or
     condition which, with the giving of notice or the passage of time, or both,
     would constitute an Event of Default, has occurred or is continuing.

                                        2
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     6.   Except as specifically amended hereby, the Credit Agreement is and
shall remain in full force and effect.

     IN WITNESS WHEREOF, the parties have executed and delivered this amendment
to the Credit Agreement as of the date first written above.

                                                 AAR CORP.

                                                 By:    /s/ Timothy J. Romenesko
                                                        ------------------------
                                                 Name:  Timothy J. Romenesko
                                                 Title: Vice President

                                                 LASALLE BANK NATIONAL
                                                  ASSOCIATION

                                                 By:    /s/Scott M. Carbon
                                                        ------------------------
                                                 Name:  Scott M. Carbon
                                                 Title: Assistant Vice President

                                        3
<Page>

                  SECOND AMENDMENT TO REVOLVING LOAN AGREEMENT

     This SECOND AMENDMENT TO REVOLVING LOAN AGREEMENT dated as of April 22,
2002 (the "Second Amendment"), is entered into by and between AAR CORP., a
Delaware corporation (the "Borrower"), and LASALLE BANK NATIONAL ASSOCIATION, a
national banking association (the "Bank").

                                    RECITALS:

     A.   The Borrower and the Bank entered into that certain Revolving Loan
Agreement dated as of April 11, 2001, as modified and amended by that certain
First Amendment to Revolving Loan Agreement dated November 30, 2001
(collectively, the "Loan Agreement").

     B.   At the present time the Borrower requests, and the Bank is agreeable
to amending the Agreement with regard to the sub-facility for issuance of
Letters of Credit, pursuant to the terms and conditions hereinafter set forth.

     NOW THEREFORE, in consideration of the premises and other good and valuable
consideration, the receipt and adequacy of which are hereby acknowledged, the
Borrower and the Bank hereby agree as follows:

                                   AGREEMENTS:

1.   RECITALS. The foregoing Recitals are hereby made a part of this Second
Amendment.

2.   DEFINITIONS. Capitalized words and phrases used herein without definition
shall have the respective meanings ascribed to such words and phrases in the
Loan Agreement.

3.   AMENDMENTS TO THE LOAN AGREEMENT.

     3.1. DEFINITIONS. The following new definitions are hereby added to Section
1.1 of the Loan Agreement in their respective alphabetical order:

          "LETTER OF CREDIT" and "LETTERS OF CREDIT" shall mean, respectively, a
     letter of credit and all such letters of credit issued by the Bank, in its
     sole discretion, upon the execution and delivery by the Borrower and the
     acceptance by the Bank of a Master Letter of Credit Agreement and an
     application for Letter of Credit, as set forth in SECTION 2(b) of this
     Agreement.

          "LETTER OF CREDIT MAXIMUM OBLIGATION" shall mean Five Million Dollars
     ($5,000,000).

          "LETTER OF CREDIT OBLIGATIONS" shall mean, at any time, an amount
     equal to the aggregate of the original face amounts of all Letters of
     Credit minus the sum of (i) the amount of any reductions in the original
     face amount of any Letter of

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     Credit which did not result from a draw thereunder, (ii) the amount of any
     payments made by the Bank with respect to any draws made under a Letter of
     Credit for which the Borrower has reimbursed the Bank, (iii) the amount of
     any payments made by the Bank with respect to any draws made under a Letter
     of Credit which have been converted to a Revolving Loan as set forth in
     SECTION 2.6, and (iv) the portion of any issued but expired Letter of
     Credit which has not been drawn by the beneficiary thereunder. For purposes
     of determining the outstanding Letter of Credit Obligations at any time,
     the Bank's acceptance of a draft drawn on the Bank pursuant to a Letter of
     Credit shall constitute a draw on the applicable Letter of Credit at the
     time of such acceptance.

          "REVOLVING LOAN AVAILABILITY" shall mean at any time the Revolving
     Loan Commitment LESS the Letter of Credit Obligations.

     3.2. LOANS. The definition of "LOANS" and "REVOLVING LOANS" in SECTION 1.1
of the Loan Agreement are hereby deleted in their entirety and the following is
inserted in lieu thereof:

          "LOANS" shall mean, collectively, all Revolving Loans (whether Prime
     Loans or LIBOR Loans) made by the Bank to the Borrower and all Letter of
     Credit Obligations, under and pursuant to this Agreement.

          "REVOLVING LOAN" or "REVOLVING LOANS" shall mean, respectively, each
     direct advance and the aggregate advances or Letters of Credit outstanding
     as set forth in Section 2.1 and 2.6 of this Agreement.

     3.3. LETTERS OF CREDIT. The following new SECTION 2.6 entitled "Letters of
Credit" is hereby added to the Loan Agreement as follows:

          "2.6 LETTERS OF CREDIT. Subject to the terms and conditions of this
     Agreement and upon the execution by the Borrower and the Bank of a Master
     Letter of Credit Agreement and the execution and delivery by the Borrower,
     and the acceptance by the Bank, in its sole and absolute discretion, of an
     application for letter of credit, and the payment by the Borrower of the
     Bank's fees charged in connection therewith, the Bank agrees to issue for
     the account of the Borrower out of the Revolving Loan Availability, such
     Letters of Credit in the standard form of the Bank and otherwise in form
     and substance acceptable to the Bank, from time to time during the term of
     this Agreement, provided that the Letter of Credit Obligations may not at
     any time exceed the Letter of Credit Maximum Obligation and provided,
     further, that no Letter of Credit shall have an expiration date later than
     the Revolving Loan Maturity Date. The amount of any payments made by the
     Bank with respect to draws made by a beneficiary under a Letter of Credit
     for which the Borrower has failed to reimburse the Bank upon the earlier of
     (i) the Bank's demand for repayment, or (ii) five (5) days from the date of
     such payment to such beneficiary by the Bank, shall be deemed to have been
     converted to a Revolving Loan as of the date such payment was made by the
     Bank to such beneficiary. Upon the occurrence of an Event of a Default and
     at the option of the

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     Bank, all Letter of Credit Obligations shall be converted to Revolving
     Loans at the Prime Rate, all without demand, presentment, protest or notice
     of any kind, all of which are hereby waived by the Borrower. In the event
     of a conflict between the Master Letter of Credit Agreement and the Loan
     Agreement, the Loan Agreement shall govern.

          In addition to all other applicable fees, charges and/or interest
     payable by the Borrower pursuant to the Master Letter of Credit Agreement
     or otherwise payable in accordance with the Bank's standard letter of
     credit fee schedule, all standby Letters of Credit issued under and
     pursuant to this Agreement shall bear an annual fee calculated as follows:

<Table>
<Caption>
                                                                       Credit Rating (S & P or Moodys)
                                                                   --------------------------------------
                                                                      Investment         Non-investment
                                                                         grade               grade
                                                                   ----------------   -------------------
     <S>                     <C>                                        <C>                <C>
     Per Annum fee           Loans LESS THAN OR EQUAL TO 60%
                             of Revolving Loan Commitment               125 bp             152.5 bp
                             Loans GREATER THAN 60% of Revolving
                             Loan Commitment                            200 bp             227.5 bp
</Table>

     of the face amount of such standby Letter of Credit, payable by the
     Borrower on or before the issuance of such Letter of Credit by the Bank and
     annually thereafter on the same date unless and until (i) such Letter of
     Credit has expired or has been returned to the Bank, or (ii) the Bank has
     paid the beneficiary thereunder the full face amount of such Letter of
     Credit. All Letters of Credit other than standby Letters of Credit shall
     bear such fees, costs and interest as charged by the Bank and shall contain
     such other terms as set forth in the Master Letter of Credit Agreement and
     the Bank's standard letter of credit fee schedule."

     3.4. REVOLVING NOTE. SECTION 4 of the Loan Agreement entitled "NOTE
EVIDENCING LOANS" is hereby deleted in its entirety and the following is
inserted in lieu thereof:

          "The Revolving Loans and the Letter of Credit Obligations shall be
     evidenced by a single Revolving Note (together with any and all renewal,
     extension, modification or replacement notes executed by the Borrower and
     delivered to the Bank and given in substitution therefor, the "Revolving
     Note") in the form of EXHIBIT "A" attached hereto, duly executed by the
     Borrower and payable to the order of the Bank. At the time of the initial
     disbursement of a Revolving Loan and at each time an additional Revolving
     Loan shall be requested hereunder or a repayment made in whole or in part
     thereon, an appropriate notation thereof shall be made on the books and
     records of the Bank. All amounts recorded shall be, absent demonstrable
     error, conclusive and binding evidence of (i) the principal amount of the
     Revolving Loans advanced hereunder and the amount of all Letter of Credit
     Obligations, (ii) any unpaid interest owing on the Revolving Loans, and
     (iii) all amounts repaid on the Revolving Loans or the Letter of Credit
     Obligations. The failure to record any such amount or any error in
     recording such amounts shall not, however, limit or otherwise affect the

                                        3
<Page>

     obligations of the Borrower under the Revolving Note to repay the principal
     amount of the Revolving Loans, together with all interest accruing
     thereon."

4.   REPRESENTATIONS AND WARRANTIES. To induce the Bank to enter into this
Second Amendment, the Borrower hereby certifies, represents and warrants to the
Bank that:

     4.1. ORGANIZATION. The Borrower is a corporation duly organized, existing
and in good standing under the laws of the State of Delaware, with full and
adequate corporate power to carry on and conduct its business as presently
conducted. The Borrower is duly licensed or qualified in all foreign
jurisdictions wherein failure to qualify would have a material adverse effect.
The Articles of Incorporation and Bylaws, Borrowing Resolutions and Incumbency
Certificate of the Borrower have not been changed or amended since the most
recent date that certified copies thereof were delivered to the Bank. The exact
legal name of the Borrower is as set forth in the preamble of this Second
Amendment, and the Borrower currently does not conduct, nor has it during the
last five (5) years conducted, business under any other name or trade name. The
Borrower will not change its name, its organizational identification number, if
it has one, its type of organization, its jurisdiction of organization or other
legal structure.

     4.2. AUTHORIZATION. The Borrower is duly authorized to execute and deliver
this Second Amendment and is and will continue to be duly authorized to borrow
monies under the Loan Agreement, as amended hereby, and to perform its
obligations under the Loan Agreement, as amended hereby.

     4.3. NO CONFLICTS. The execution and delivery of this Second Amendment and
the performance by the Borrower of its obligations under the Loan Agreement, as
amended hereby, do not and will not conflict with any provision of law or of the
articles of incorporation or bylaws of the Borrower or of any material agreement
binding upon the Borrower.

     4.4. VALIDITY AND BINDING EFFECT. The Loan Agreement, as amended hereby, is
a legal, valid and binding obligation of the Borrower, enforceable against the
Borrower in accordance with its terms, except as enforceability may be limited
by bankruptcy, insolvency or other similar laws of general application affecting
the enforcement of creditors' rights or by general principles of equity limiting
the availability of equitable remedies.

     4.5. COMPLIANCE WITH LOAN AGREEMENT. The representation and warranties set
forth in Section 6 of the Loan Agreement, as amended hereby, are true and
correct with the same effect as if such representations and warranties had been
made on the date hereof, with the exception that all references to the financial
statements shall mean the financial statements most recently delivered to the
Bank and except for such changes as are specifically permitted under the Loan
Agreement. In addition, the Borrower has complied with and is in compliance with
all of the covenants set forth in the Loan Agreement.

     4.6. NO EVENT OF DEFAULT. As of the date hereof, no Event of Default under
the Loan Agreement, as amended hereby, or event or condition which, with the
giving of notice or the passage of time, or both, would constitute an Event of
Default, has occurred or is continuing.

                                        4
<Page>

5.   CONDITIONS PRECEDENT. This Second Amendment shall become effective as of
the date above first written after receipt by the Bank of the following
documents:

     5.1. SECOND AMENDMENT. This Second Amendment executed by the Borrower and
the Bank.

     5.2. OTHER DOCUMENTS. Such other documents, certificates and/or opinions of
counsel as the Bank may request.

6.   GENERAL.

     6.1. GOVERNING LAW; SEVERABILITY. This Second Amendment shall be construed
in accordance with and governed by the laws of Illinois. Wherever possible each
provision of the Loan Agreement and this Second Amendment shall be interpreted
in such manner as to be effective and valid under applicable law, but if any
provision of the Loan Agreement and this Second Amendment shall be prohibited by
or invalid under such law, such provision shall be ineffective to the extent of
such prohibition or invalidity, without invalidating the remainder of such
provision or the remaining provisions of the Loan Agreement and this Second
Amendment.

     6.2. SUCCESSORS AND ASSIGNS. This Second Amendment shall be binding upon
the Borrower and the Bank and their respective successors and assigns, and shall
inure to the benefit of the Borrower and the Bank and the successors and assigns
of the Bank.

     6.3. CONTINUING FORCE AND EFFECT OF LOAN DOCUMENTS. Except as specifically
modified or amended by the terms of this Second Amendment, all other terms and
provisions of the Loan Agreement and the other Loan Documents are incorporated
by reference herein, and in all respects, shall continue in full force and
effect. The Borrower, by execution of this Second Amendment, hereby reaffirms,
assumes and binds itself to all of the obligations, duties, rights, covenants,
terms and conditions that are contained in the Loan Agreement and the other Loan
Documents.

     6.4. REFERENCES TO LOAN AGREEMENT. Each reference in the Loan Agreement to
"this Agreement", "hereunder", "hereof", or words of like import, and each
reference to the Loan Agreement in any and all instruments or documents
delivered in connection therewith, shall be deemed to refer to the Loan
Agreement, as amended hereby.

     6.5. COUNTERPARTS. This Second Amendment may be executed in any number of
counterparts, all of which shall constitute one and the same agreement.

     IN WITNESS WHEREOF, the parties hereto have executed this Second Amendment
to Revolving Loan Agreement as of the date first above written.

                                                              AAR CORP.

                                        5
<Page>

                                                   By:  /s/ Timothy J. Romenesko
                                                        ------------------------
                                                   Its: Vice President
                                                        ------------------------

                                                   LASALLE BANK NATIONAL
                                                    ASSOCIATION

                                                   By:  /s/ Scott M. Carbon
                                                        ------------------------
                                                   Its: Assistant Vice President
                                                        ------------------------

                                        6
<Page>

                   THIRD AMENDMENT TO REVOLVING LOAN AGREEMENT

     This THIRD AMENDMENT TO REVOLVING LOAN AGREEMENT dated as of June 1, 2002
(the "Third Amendment"), is entered into by and between AAR CORP., a Delaware
corporation (the "Borrower"), and LASALLE BANK NATIONAL ASSOCIATION, a national
banking association (the "Bank").

                                    RECITALS:

     A.   The Borrower and the Bank entered into that certain Revolving Loan
Agreement dated as of April 11, 2001, as modified and amended by that certain
First Amendment to Revolving Loan Agreement dated November 30, 2001 and a Second
Amendment to Revolving Loan Agreement dated April 22, 2002 (collectively, the
"Loan Agreement").

     B.   At the present time the Borrower requests, and the Bank is agreeable
to amending the Agreement with regard to the sub-facility for issuance of
Letters of Credit, pursuant to the terms and conditions hereinafter set forth.

     NOW THEREFORE, in consideration of the premises and other good and valuable
consideration, the receipt and adequacy of which are hereby acknowledged, the
Borrower and the Bank hereby agree as follows:

                                   AGREEMENTS:

1.   RECITALS. The foregoing Recitals are hereby made a part of this Third
Amendment.

2.   DEFINITIONS. Capitalized words and phrases used herein without definition
shall have the respective meanings ascribed to such words and phrases in the
Loan Agreement.

3.   AMENDMENTS TO THE LOAN AGREEMENT.

     3.1. LETTERS OF CREDIT. The first paragraph of Section 2.6 of the Loan
Agreement is hereby amended to add the following after the phrase "REVOLVING
LOAN MATURITY DATE":

          "...; provided, however, that up to Two Million Dollars
          ($2,000,000.00) of letters of credit issued under the Maximum Letter
          of Credit Obligations may expire no later than October 10, 2003."

4.   REPRESENTATIONS AND WARRANTIES. To induce the Bank to enter into this Third
Amendment, the Borrower hereby certifies, represents and warrants to the Bank
that:

     4.1. ORGANIZATION. The Borrower is a corporation duly organized, existing
and in good standing under the laws of the State of Delaware, with full and
adequate corporate power to carry on and conduct its business as presently
conducted. The Borrower is duly licensed or qualified in all foreign
jurisdictions wherein failure to qualify would have a material adverse effect.
The

<Page>

Articles of Incorporation and Bylaws, Borrowing Resolutions and Incumbency
Certificate of the Borrower have not been changed or amended since the most
recent date that certified copies thereof were delivered to the Bank. The exact
legal name of the Borrower is as set forth in the preamble of this Third
Amendment, and the Borrower currently does not conduct, nor has it during the
last five (5) years conducted, business under any other name or trade name. The
Borrower will not change its name, its organizational identification number, if
it has one, its type of organization, its jurisdiction of organization or other
legal structure.

     4.2. AUTHORIZATION. The Borrower is duly authorized to execute and deliver
this Third Amendment and is and will continue to be duly authorized to borrow
monies under the Loan Agreement, as amended hereby, and to perform its
obligations under the Loan Agreement, as amended hereby.

     4.3. NO CONFLICTS. The execution and delivery of this Third Amendment and
the performance by the Borrower of its obligations under the Loan Agreement, as
amended hereby, do not and will not conflict with any provision of law or of the
articles of incorporation or bylaws of the Borrower or of any material agreement
binding upon the Borrower.

     4.4. VALIDITY AND BINDING EFFECT. The Loan Agreement, as amended hereby, is
a legal, valid and binding obligation of the Borrower, enforceable against the
Borrower in accordance with its terms, except as enforceability may be limited
by bankruptcy, insolvency or other similar laws of general application affecting
the enforcement of creditors' rights or by general principles of equity limiting
the availability of equitable remedies.

     4.5. COMPLIANCE WITH LOAN AGREEMENT. The representation and warranties set
forth in Section 6 of the Loan Agreement, as amended hereby, are true and
correct with the same effect as if such representations and warranties had been
made on the date hereof, with the exception that all references to the financial
statements shall mean the financial statements most recently delivered to the
Bank and except for such changes as are specifically permitted under the Loan
Agreement. In addition, the Borrower has complied with and is in compliance with
all of the covenants set forth in the Loan Agreement.

     4.6. NO EVENT OF DEFAULT. As of the date hereof, no Event of Default under
the Loan Agreement as amended hereby, or event or condition, which with the
giving of notice or the passage of time or both, would constitute an Event of
Default, has occurred or is continuing.

5.   CONDITIONS PRECEDENT. This Third Amendment shall become effective as of the
date above first written after receipt by the Bank of the following documents:

     5.1. THIRD AMENDMENT. This Third Amendment executed by the Borrower and the
Bank.

     5.2. OTHER DOCUMENTS. Such other documents, certificates and/or opinions of
counsel as the Bank may request.

                                        2
<Page>

6.   GENERAL.

     6.1. GOVERNING LAW; SEVERABILITY. This Third Amendment shall be construed
in accordance with and governed by the laws of Illinois. Wherever possible each
provision of the Loan Agreement and this Third Amendment shall be interpreted in
such manner as to be effective and valid under applicable law, but if any
provision of the Loan Agreement and this Third Amendment shall be prohibited by
or invalid under such law, such provision shall be ineffective to the extent of
such prohibition or invalidity, without invalidating the remainder of such
provision or the remaining provisions of the Loan Agreement and this Third
Amendment.

     6.2. SUCCESSORS AND ASSIGNS. This Third Amendment shall be binding upon the
Borrower and the Bank and their respective successors and assigns, and shall
inure to the benefit of the Borrower and the Bank and the successors and assigns
of the Bank.

     6.3. CONTINUING FORCE AND EFFECT OF LOAN DOCUMENTS. Except as specifically
modified or amended by the terms of this Third Amendment, all other terms and
provisions of the Loan Agreement and the other Loan Documents are incorporated
by reference herein, and in all respects, shall continue in full force and
effect. The Borrower, by execution of this Third Amendment, hereby reaffirms,
assumes and binds itself to all of the obligations, duties, rights, covenants,
terms and conditions that are contained in the Loan Agreement and the other Loan
Documents.

     6.4. REFERENCES TO LOAN AGREEMENT. Each reference in the Loan Agreement to
"this Agreement", "hereunder", "hereof", or words of like import, and each
reference to the Loan Agreement in any and all instruments or documents
delivered in connection therewith, shall be deemed to refer to the Loan
Agreement, as amended hereby.

     6.5. COUNTERPARTS. This Third Amendment may be executed in any number of
counterparts, all of which shall constitute one and the same agreement.

     IN WITNESS WHEREOF, the parties hereto have executed this Third Amendment
to Revolving Loan Agreement as of the date first above written.

AAR CORP.                                          LASALLE BANK NATIONAL
                                                     ASSOCIATION

By:  /s/ Timothy J. Romenesko                      By:  /s/ Scott M. Carbon
     ----------------------------                       ------------------------
Its: Treasurer                                     Its: Assistant Vice President
     ----------------------------                       ------------------------

                                        3<Page>

                                                                    EXHIBIT 4.11

                            REVOLVING LOAN AGREEMENT

     This REVOLVING LOAN AGREEMENT dated as of October 3, 2001 (the
"Agreement"), is entered into by and between AAR CORP., a Delaware corporation
(the "Borrower"), whose address is 1100 North Wood Dale Road, Wood Dale,
Illinois 60191 and U.S. Bank National Association doing business as Firstar Bank
National Association (the "Bank"), whose address is 777 East Wisconsin Avenue,
MK-FC-GLCB, Milwaukee, Wisconsin 53202.

     In consideration of the mutual agreements hereinafter set forth, the
Borrower and the Bank hereby agree as follows:

1.   DEFINITIONS.

     1.1    DEFINED TERMS. For the purposes of this Agreement, the following
capitalized words and phrases shall have the meanings set forth below.

            "ACCOUNT" shall have the meaning set forth in Section 12.1.

            "ACCOUNTS RECEIVABLE" shall have the meaning set forth in Section
     8.4.

            "ACQUISITION" means any transaction, or any series of related
     transactions, consummated on or after the date of this Agreement, by which
     the Borrower or any of its Subsidiaries (i) acquires any going business or
     all or substantially all of the assets of any firm, corporation or division
     thereof, whether through purchase of assets, merger or otherwise or (ii)
     directly or indirectly acquires (in one transaction or as the most recent
     transaction in a series of transactions) at least a majority (in number of
     votes) of the securities of a corporation which have ordinary voting power
     for the election of directors (other than securities having such power only
     by reason of the happening of a contingency) or a majority (by percentage
     or voting power) of the outstanding partnership interests of a partnership.

            "AFFILIATE" of any Person means any other Person directly or
     indirectly controlling, controlled by or under common control with such
     Person. A Person shall be deemed to control another Person if the
     controlling Person owns 10% or more of any class of voting securities (or
     other ownership interests) of the controlled Person or possesses, directly
     or indirectly, the power to direct or cause the direction of the management
     or policies of the controlled Person, whether through ownership of stock,
     by contract or otherwise.

            "BUSINESS DAY" shall mean any day other than a Saturday, Sunday or a
     legal holiday on which banks are authorized or required to be closed for
     the conduct of commercial banking business in Chicago, Illinois.

                                        1
<Page>

            "BORROWER'S UNSECURED LENDERS" shall mean any lender extending
     credit to Borrower on an unsecured basis under similar revolving loan
     facilities, including, but not limited to, Bank One, Bank of America, N.A.
     The Northern Trust Company and any other lenders who may replace these
     lenders or be added to these facilities from time to time.

            "CAPITAL LEASE" shall mean, as to any person or entity, a lease of
     any interest in any kind of property or asset, whether real, personal or
     mixed, or tangible or intangible, by such person or entity as lessee that
     is, or should be, in accordance with Financial Accounting Standards Board
     Statement No. 13, as amended from time to time, or, if such Statement is
     not then in effect, such statement of GAAP as may be applicable, recorded
     as a "capital lease" on the balance sheet of the Borrower prepared in
     accordance with GAAP.

            "CAPITALIZED LEASE OBLIGATIONS" of a person means the amount of the
     obligations of such person under Capitalized Leases which would be shown as
     a liability on a balance sheet of such person prepared in accordance with
     GAAP.

            "CHANGE IN CONTROL" means (i) the acquisition by any person, or two
     or more persons acting in concert, of beneficial ownership (within the
     meaning of Rule 13d-3 of the Securities and Exchange Commission under the
     Securities Exchange Act of 1934, as amended) of 20% or more of the
     outstanding shares of voting stock of the Borrower or (ii) a majority of
     the directors on the Borrower's Board of Directors shall cease to be
     directors of the Borrower during any twelve month period.

            "CODE" shall mean the United States Bankruptcy Code, as now existing
     or hereafter amended.

            "CONSOLIDATED ASSETS" means the total consolidated assets of the
     Borrower and its Subsidiaries determined in accordance with GAAP.

            "CONSOLIDATED CURRENT ASSETS" means the total consolidated current
     assets of the Borrower and its Subsidiaries determined in accordance with
     GAAP.

            "CONSOLIDATED CURRENT LIABILITIES" means the total consolidated
     current liabilities of the Borrower and its Subsidiaries determined in
     accordance with GAAP.

            "CONSOLIDATED EARNINGS AVAILABLE FOR FIXED CHARGES" means, for any
     period, the sum of (i) Consolidated Net Income (excluding gains and losses
     from the sale of assets other than in the ordinary course of business and
     income or losses derived from discontinued operations), PLUS (ii) to the
     extent deducted in determining Consolidated Net Income all provisions for
     any federal, state, or other income taxes made by the Borrower and its
     Subsidiaries during such period, PLUS (iii) Consolidated Fixed Charges
     during such period, and PLUS (iv) deferred financing costs for such period.

                                        2
<Page>

            "CONSOLIDATED FIXED CHARGES" means, without duplication, for any
     period, for the Borrower and its Subsidiaries for such period, the sum of
     (i) current maturities for such period, (ii) interest expense on
     indebtedness (excluding capitalized leases) for such period, PLUS (iii)
     total rental expense under all leases other than capitalized leases, and
     PLUS (iv) imputed interest expense under capitalized leases.

            "CONSOLIDATED FUNDED DEBT" means all Indebtedness having a final
     maturity of more than one year plus unsecured Indebtedness to the Bank.
     Consolidated Funded Debt shall not include payments due within one year
     from the date as of which a calculation of Consolidated Funded Debt is
     made.

            "CONSOLIDATED LIABILITIES" means the total consolidated liabilities
     of the Borrower and its Subsidiaries determined in accordance with GAAP.

            "CONSOLIDATED NET INCOME" shall mean, for any period, the net income
     (or loss) of the Borrower and its Subsidiaries on a consolidated basis for
     such period taken as a single accounting period determined in accordance
     with GAAP; PROVIDED, that there shall be excluded (i) the income (or loss)
     of any Affiliate of the Borrower or other Person(other than a Subsidiary of
     the Borrower) in which any Person (other than the Borrower or any of its
     Subsidiaries) has a joint interest, except to the extent of the amount of
     dividends or other distributions actually paid to the Borrower, or any of
     its Subsidiaries by such Affiliate or other Person during such period, (ii)
     the income (or loss) of any Person accrued prior to the date it becomes a
     Subsidiary of the Borrower or is merged into or consolidated with the
     Borrower or any of its Subsidiaries or that Person's assets are acquired by
     the Borrower or any of its Subsidiaries, and (iii) the income of any
     Subsidiary of the Borrower to the extent that the declaration or payment of
     dividends or similar distributions by that Subsidiary of that income is not
     at the time permitted by operation of the terms of its charter or any
     agreement, instrument, judgment, decree, order, statute, rule or
     governmental regulation applicable to that Subsidiary.

            "CONSOLIDATED NET WORTH" means, as of any date of determination, the
     consolidated stockholders' equity of the Borrower and its Subsidiaries
     determined in accordance with GAAP.

            "CONSOLIDATED SECURED LIABILITIES" means the aggregate amount of
     Consolidated Liabilities which are secured by any Lien (other than Liens
     permitted pursuant to any of clauses (a), (d), (e), (f), (h) and (k) of
     Section 8.6) on any property of the Borrower or any of its Subsidiaries.

            "CONSOLIDATED TANGIBLE NET WORTH" means, as of any date of
     determination, the sum of (a) Consolidated Net Worth, less consolidated
     Intangible Assets of the Borrower and its Subsidiaries, plus (b)
     Subordinated Debt. For purposes of this definition "Intangible Assets"
     means the amount (to the extent reflected in determining such Consolidated
     Net Worth ) of (i) all write-ups (other than write-ups resulting from
     foreign currency translations and write-ups of assets of a going concern
     business made within twelve months after the acquisition of such business)
     in the book value of any asset

                                        3
<Page>

     owned by the Borrower or a Consolidated Subsidiary subsequent to May 31,
     2000, and (ii) all unamortized debt discount and expense, unamortized
     deferred charges, goodwill, patents, trademarks, service marks, trade
     names, copyrights, organization or development expenses, costs in excess of
     underlying assets of acquired companies, covenants to not compete, and
     other intangible items, for purposes of this clause (ii), in each case, to
     the extent such items are disclosed as separate line items on the
     Borrower's financial statements required under Section 9.6.

            "CONSOLIDATED TOTAL CAPITALIZATION" means the sum of (i) the
     remainder of (a) Consolidated Tangible Net Worth, minus (b) Subordinated
     Debt, plus (ii) Consolidated Funded Debt.

            "CONTINGENT OBLIGATION" of a Person means any agreement, undertaking
     or arrangement by which such Person assumes, guarantees, endorses,
     contingently agrees to purchase or provide funds for the payment of, or
     otherwise becomes or is contingently liable upon, the obligation or
     liability of any other Person, or agrees to maintain the net worth or
     working capital or other financial condition of any other Person, or
     otherwise assures any creditor of such other Person against loss,
     including, without limitation, a comfort letter, operating agreement,
     take-or-pay contract, keep well agreement, equity subscription agreement,
     or application for a letter of credit or similar instrument; provided,
     however, that Contingent Obligations shall not include (i) Contingent
     Obligations resulting from endorsement of negotiable instruments for
     deposit or collection or similar transactions in the ordinary course of the
     Borrower's and each Subsidiary's business, (ii) Contingent Obligations by
     the Borrower of any Subsidiary's Indebtedness (including, for the avoidance
     of doubt, obligations arising out of overdraft and similar cash management
     facilities) permitted to exist pursuant to this Agreement and any
     Subsidiary's obligations for Rentals permitted by Section 8.7, (iii) any
     obligations in connection with the Receivables Securitization.

            "CONTROLLED GROUP" means all members of a controlled group of
     corporations and all trades or businesses (whether or not incorporated)
     under common control which, together with the Borrower or any of its
     Subsidiaries, are treated as a single employer under Section 414 of the
     Internal Revenue Code.

            "DEFAULT RATE" shall mean a floating per annum rate of interest
     equal to the Prime Rate plus two percent (2.00%).

            "DOMESTIC SUBSIDIARY" means any Subsidiary of the Borrower organized
     under the laws of any State of the United States of America or the District
     of Columbia, all or substantially all of whose assets are located, and
     whose business is conducted, in one or more of any such States or District.

            "ENVIRONMENTAL LAWS" shall mean all federal, state, district, local
     and foreign laws, rules, regulations, ordinances, and consent decrees
     relating to health, safety, hazardous substances, pollution and
     environmental matters, as now or at any time hereafter in effect,
     applicable to the Borrower's business or facilities owned or operated

                                        4
<Page>

     by the Borrower, including laws relating to emissions, discharges, releases
     or threatened releases of pollutants, contamination, chemicals, or
     hazardous, toxic or dangerous substances, materials or wastes in the
     environment (including, without limitation, ambient air, surface water,
     land surface or subsurface strata) or otherwise relating to the generation,
     manufacture, processing, distribution, use, treatment, storage, disposal,
     transport or handling of Hazardous Materials.

            "ERISA" means the United States Employee Retirement Income Security
     Act of 1974, as amended.

            "EVENT OF DEFAULT" shall mean any of the events or conditions set
     forth in Section 11 hereof.

            "FACILITY FEE" means a facility fee on the Commitment in an amount
     equal to (a) 0.175% per annum when the Borrower has an Investment Grade
     Rating or (b) 0.25% per annum when the Borrower does not have an Investment
     Grade Rating.

            "FIXED CHARGE COVERAGE RATIO" means, for any period, the ratio of
     (a) Consolidated Earnings Available for Fixed Charges to (b) Consolidated
     Fixed Charges for such period.

            "FOREIGN ACCOUNTS" means Accounts with respect to which the obligor
     is a Person which is (i) organized under the laws of a jurisdiction other
     than the United States of America, any State of the United States of
     America or the District of Columbia, in the case of a Person which is not a
     natural person, or (ii) a citizen of a country other than the United States
     of America, in the case of a natural person.

            "FOREIGN SUBSIDIARY" means any Subsidiary of the Borrower, which is
     not a Domestic Subsidiary.

            "GAAP" shall mean generally accepted accounting principles, using
     the accrual basis of accounting and consistently applied.

            "HAZARDOUS MATERIALS" shall mean any hazardous, toxic or dangerous
     substance, materials and wastes, including, without limitation,
     hydrocarbons (including naturally occurring or man-made petroleum and
     hydrocarbons), flammable explosives, asbestos, urea formaldehyde
     insulation, radioactive materials, biological substances, polychlorinated
     biphenyls, pesticides, herbicides and any other kind and/or type of
     pollutants or contaminants (including, without limitation, materials which
     include hazardous constituents), sewage, sludge, industrial slag, solvents
     and/or any other similar substances, materials or wastes that are or become
     regulated under any Environmental Law (including without limitation, any
     that are or become classified as hazardous or toxic under any Environmental
     Law).

            "INDEBTEDNESS" shall mean as determined in accordance with GAAP (i)
     obligations for borrowed money other than those incurred on a non-recourse
     basis, (ii)

                                        5
<Page>

     obligations representing the deferred purchase price of property or
     services (other than accounts payable and other accrued liabilities arising
     in the ordinary course of such Person's business payable on terms customary
     in the trade), (iii) obligations, whether or not assumed, secured by Liens
     (other than Liens permitted pursuant to any of clauses (a), (d), (e), (f),
     (h) and (k) of Section 8.6) or payable out of the proceeds or production
     from property now or hereafter owned or acquired (iv) obligations which are
     evidenced by notes, acceptances, or other instruments, (v) Capitalized
     Lease Obligations and (vi) net liabilities under currency or interest rate
     swap, exchange or cap agreements; provided, however, that Indebtedness
     shall not include obligations in connection with operating leases and
     leveraged leases.

            "INTEREST PERIOD" shall mean, with regard to any LIBOR Loan,
     successive two week, one, two, three or six month periods as selected from
     time to time by the Borrower by notice given to the Bank not less than
     three Business Days prior to the first day of each respective Interest
     Period; provided, however, that (i) each such Interest Period occurring
     after the initial Interest Period of any LIBOR Loan shall commence on the
     day on which the preceding Interest Period for such LIBOR Loan expires,
     (ii) whenever the last day of any Interest Period would otherwise occur on
     a day other than a Business Day, the last day of such Interest Period shall
     be extended to occur on the next succeeding Business Day, provided,
     however, that if such extension would cause the last day of such Interest
     period to occur in the next following calendar month, then the last day of
     such Interest Period shall occur on the immediately preceding Business Day;
     (iii) whenever the first day of any Interest Period occurs on a day of a
     month for which there is no numerically corresponding day in the calendar
     month in which such Interest Period terminates, such Interest Period shall
     end on the last Business Day of such calendar month; and (iv)the final
     Interest Period must be such that this expiration occurs on or before the
     Maturity Date.

            "INTEREST RATE" shall mean the Borrower's option of,

                 (i)   LIBOR for the relevant Interest Period (rounded upward if
            necessary, to the nearest 1/16 of 1.00%) plus (1) .40% at all times
            when the Borrower has an Investment Grade Rating; and (2) 1.00% at
            all times when the Borrower does not have an Investment Grade
            Rating. The LIBOR Rate shall be fixed for each Interest Period; or

                 (ii)  the Prime Rate plus zero % at all times when the Borrower
            has an Investment Grade Rating and 0.50% at all times when the
            Borrower does not have an Investment Grade Rating.

            Provided, however, that in no event shall the Interest Rate be less
            than the highest rate charged at any time by the Borrower's
            Unsecured Lenders.

            "INTERNAL REVENUE CODE" means the United States Internal Revenue
     Code of 1986, as amended from time to time.

                                        6
<Page>

            "INVESTMENT" of a person means any loan, advance (other than
     commission, travel and similar advances to its officers, employees, agents
     and representatives made in the ordinary course of business), extension of
     credit (other than accounts receivable arising in the ordinary course of
     business), deposit account or contribution of capital by such person to any
     other person or any investment in, or purchase or other acquisition of, the
     stock, partnership interests, notes, debentures or other securities of any
     other person made by such person.

            "INVESTMENT GRADE RATING" means, in the context of the Borrower
     having an Investment Grade Rating, that the Borrower's senior unsecured
     long term debt is rated both (a) BBB- or better by Standard & Poor's
     Ratings Services, a division of the McGraw Hill Companies, Inc. and (b)
     Baa3 or better by Moody's Investor Service, Inc.

            "LIABILITIES" shall mean at all times all liabilities of the
     Borrower that would be shown as such on a balance sheet of the Borrower
     prepared in accordance with GAAP.

            "LIBOR" shall mean a rate of interest equal to the per annum rate of
     interest at which United States dollar deposits in an amount comparable to
     the amount of the relevant LIBOR Loan and for a period equal to the
     relevant Interest Period are offered generally to the Bank (rounded upward
     if necessary, to the nearest 1/16 of 1.00%) in the London Interbank
     Eurodollar market at 11:00 a.m. (London time) two Business Days prior to
     the commencement of each Interest Period, or as LIBOR is otherwise
     determined by the Bank in its sole and absolute discretion, such rate to
     remain fixed for such Interest Period. The Bank's determination of LIBOR
     shall be conclusive, absent manifest error.

            "LIBOR LOAN" or "LIBOR LOANS" shall mean that portion, and
     collectively those portions, of the aggregate outstanding principal balance
     of the Revolving Loans that will bear interest at the LIBOR Rate, of which
     at any time and from time to time, the Borrower may identify no more than
     five advances of the Revolving Loans which will bear interest at the LIBOR
     Rate, of which each particular LIBOR Loan must be in the amount of
     $1,000,000 or a higher integral multiple of $500,000.

            "LIEN" shall mean any mortgage, pledge, hypothecation, judgment lien
     or similar legal process, title retention lien, or other lien or security
     interest, including, without limitation, the interest of a vendor under any
     conditional sale or other title retention agreement and the interest of a
     lessor under a lease of any interest in any kind of property or asset,
     whether real, personal or mixed, or tangible or intangible, by such person
     or entity as lessee that is, or should be, a Capital Lease on the balance
     sheet of the Borrower prepared in accordance with GAAP.

            "LOANS" shall mean, collectively, all Revolving Loans made by the
     Bank to the Borrower under and pursuant to this Agreement.

            "LOAN DOCUMENTS" shall have the meaning set forth in Section 3.1.

                                        7
<Page>

            "MATERIAL ADVERSE EFFECT" means a material adverse effect on (i) the
     business, properties, financial condition, or results of operations on the
     Borrower and its Subsidiaries taken as a whole, (ii) the ability of the
     Borrower to perform its Obligations under this Agreement, or (iii) the
     validity or enforceability of this Agreement or the rights or remedies of
     the Bank thereunder.

            "MATURITY DATE" shall mean October 2, 2002.

            "MULTIEMPLOYER PLAN" means a Plan maintained pursuant to a
     collective bargaining agreement or any other arrangement to which the
     Borrower or any member of the Controlled Group is a party to which more
     than one employer is obligated to make contributions.

            "NOTE" shall mean the Revolving Note.

            "OBLIGATIONS" shall mean the Loans, as evidenced by the Note, all
     interest accrued thereon, any accrued and unpaid fees and all expenses,
     reimbursements, indemnities and other obligations of the Borrower to the
     Bank arising under the Loan Documents.

            "PBGC" means the Pension Benefit Guaranty Corporation, or any
     successor thereto.

            "PLAN" means an employee pension benefit plan which is covered by
     Title IV of ERISA or subject to the minimum funding standards under Section
     412 of the Internal Revenue Code, as to which the Borrower or any member of
     the Controlled Group may have any liability.

            "PRIME RATE" shall mean the floating per annum rate of interest
     which at any time, and from time to time, shall be most recently announced
     by the Bank as its Prime Rate, which is not intended to be the Bank's
     lowest or most favorable rate of interest at any one time. The effective
     date of any change in the Prime Rate shall for purposes hereof be the date
     the Prime Rate is changed by the Bank. The Bank shall not be obligated to
     give notice of any change in the Prime Rate.

            "REGULATORY CHANGE" means any change in law or any governmental or
     quasi-governmental rule, regulation, policy, guideline or directive, to
     which the Bank must comply.

            "RENTALS" of a person means the aggregate fixed amounts payable by
     such person under any lease or real or personal property having an original
     term (including any required renewals or any renewals at the option of the
     lessor or lessee) on one year or more, but does not include any amounts
     payable under Capitalized Leases of such person.

            "REPORTABLE EVENT" means a reportable event as defined in Section
     4043 of ERISA and the regulations issued under such section, with respect
     to a Plan, excluding, however, such events as to which the PBGC by
     regulation waived the requirement of

                                        8
<Page>

     Section 4043(a) of ERISA that it be notified within 30 days of the
     occurrence of such event, provide, however, that a failure to meet the
     minimum funding standard of Section 412 of the Internal Revenue Code and of
     Section 302 of ERISA shall be a Reportable Event regardless of the issuance
     of any such waiver of the notice requirement in accordance with either
     Section 4043(a) of ERISA or Section 412(d) of the Internal Revenue Code.

            "RESTRICTED PAYMENTS" means collectively, all dividends (cash,
     stock, asset or otherwise) and all payments on any class of securities
     (specifically including all Subordinated Debt, but excluding any other debt
     securities) issued by the Borrower or any Subsidiary, whether such
     securities are now, or may hereafter be, authorized or outstanding and any
     payment by the Borrower or any Subsidiary on account of the purchase,
     redemption or retirement of any class of securities (specifically including
     all Subordinated Debt, but excluding all other debt securities) issued by
     it, and any distribution in respect to any of the foregoing, whether
     directly or indirectly.

            "REVOLVING LOAN" or "REVOLVING LOANS" shall mean, respectively, each
     direct advance and the aggregate of all such direct advances, made by the
     Bank to the Borrower under and pursuant to this Agreement, as set forth in
     Section 2.1 of this Agreement.

            "REVOLVING LOAN COMMITMENT" shall mean Ten Million and 00/100
     Dollars ($10,000,000.00).

            "REVOLVING NOTE" shall have the meanings set forth in Section 4
     hereof.

            "SINGLE EMPLOYER PLAN" means a Plan maintained by the Borrower of
     any member of the Controlled Group for employees of the Borrower or any
     member of the Controlled Group.

            "SUBORDINATED DEBT" means indebtedness of the Borrower or any
     Subsidiary evidenced by instruments containing provisions by which the
     payment of such indebtedness is postponed and subordinated to the payment
     of the Revolving Note, which subordination provisions and the provisions
     for payment shall be in form and substance satisfactory to the Bank as
     evidenced by its prior written consent thereto.

            "SUBSIDIARY" and "SUBSIDIARIES" shall mean, respectively, each and
     all such corporations, partnerships, limited partnerships, limited
     liability companies, limited liability partnerships or other entities of
     which or in which the Borrower owns directly or indirectly more than fifty
     percent (50.00%) of (i) the combined voting power of all classes of stock
     having general voting power under ordinary circumstances to elect a
     majority of the board of directors of such entity if a corporation, (ii)
     the management authority and capital interest or profits interest of such
     entity, if a partnership, limited partnership, limited liability company,
     limited liability partnership, joint venture or similar entity, or (iii)
     the beneficial interest of such entity, if a trust, association or other
     unincorporated organization.

                                        9
<Page>

            "UCC" shall mean the Uniform Commercial Code in effect in Illinois
     from time to time.

            "UNFUNDED LIABILITIES" means the aggregate unfunded value of
     accumulated benefits under all Single Employer Plans, all determined in
     accordance with GAAP as of the then most recent valuation date for such
     Plans.

     1.2    ACCOUNTING TERMS. Any accounting terms used in this Agreement which
are not specifically defined herein shall have the meanings customarily given
them in accordance with GAAP. Calculations and determinations of financial and
accounting terms used and not otherwise specifically defined hereunder and the
preparation of financial statements to be furnished to the Bank pursuant hereto
shall be made and prepared, both as to classification of items and as to amount,
in accordance with GAAP as used in the preparation of the financial statements
of the Borrower on the date of this Agreement. If any changes in accounting
principles or practices from those used in the preparation of the financial
statements are hereafter occasioned by the promulgation of rules, regulations,
pronouncements and opinions by or required by the Financial Accounting Standards
Board or the American Institute of Certified Public Accountants (or any
successor thereto or agencies with similar functions), which results in a
material change in the method of accounting in the financial statements required
to be furnished to the Bank hereunder or in the calculation of financial
covenants, standards or terms contained in this Agreement, the parties hereto
agree to enter into good faith negotiations to amend such provisions so as
equitably to reflect such changes to the end that the criteria for evaluating
the financial condition and performance of the Borrower will be the same after
such changes as they were before such changes; and if the parties fail to agree
on the amendment of such provisions, the Borrower will furnish financial
statements in accordance with such changes but shall provide calculations for
all financial covenants, perform all financial covenants and otherwise observe
all financial standards and terms in accordance with applicable accounting
principles and practices in effect immediately prior to such changes.
Calculations with respect to financial covenants required to be stated in
accordance with applicable accounting principles and practices in effect
immediately prior to such changes shall be reviewed and certified by the
Borrower's accountants.

     1.3    OTHER TERMS DEFINED IN UCC. All other capitalized words and phrases
used herein and not otherwise specifically defined shall have the respective
meanings assigned to such terms as in the UCC in effect from time to time.

     1.4    OTHER DEFINITIONAL PROVISIONS; CONSTRUCTION. Whenever the context so
requires, the neuter gender includes the masculine and feminine, the single
number includes the plural, and vice versa, and in particular the word
"Borrower" shall be so construed. The words "hereof", "herein" and "hereunder"
and words of similar import when used in this Agreement shall refer to this
Agreement as a whole and not to any particular provision of this Agreement, and
references to Article, Section, Subsection, Annex, Schedule, Exhibit and like
references are references to this Agreement unless otherwise specified. An Event
of Default shall "continue" or be "continuing" until such Event of Default has
been cured to the reasonable satisfaction of the Bank or waived in accordance
with Section 13.3 hereof. References in this Agreement to any party shall
include such party's successors and permitted assigns. References to any
"Section"

                                       10
<Page>

shall be a reference to such Section of this Agreement unless
otherwise stated. To the extent any of the provisions of the other Loan
Documents are inconsistent with the terms of this Loan Agreement, the provisions
of this Loan Agreement shall govern.

2.   COMMITMENT OF THE BANK.

     2.1    REVOLVING LOANS.

            (a)  REVOLVING LOAN COMMITMENT. Subject to the terms and conditions
     of this Agreement and the other Loan Documents, and in reliance upon the
     representations and warranties of the Borrower set forth herein and in the
     other Loan Documents, the Bank agrees to make such Revolving Loans at such
     times as the Borrower may from time to time request until, but not
     including, the Maturity Date, and in such amounts as the Borrower may from
     time to time request, provided, however, that the aggregate principal
     balance of all Revolving Loans outstanding at any time shall not exceed the
     Revolving Loan Commitment. Revolving Loans made by the Bank may be repaid
     and, subject to the terms and conditions hereof, borrowed again up to, but
     not including the Maturity Date unless the Revolving Loans are otherwise
     terminated or extended as provided in this Agreement. The Revolving Loans
     shall be used by the Borrower for general corporate needs of the Borrower
     and its Subsidiaries.

            (b)  REVOLVING LOAN INTEREST AND PAYMENTS. Except as otherwise
     provided in this Section 2.1(b), the principal amount of the Revolving
     Loans outstanding from time to time shall bear interest at the Interest
     Rate. Accrued and unpaid interest on the unpaid principal balance of all
     Revolving Loans outstanding from time to time which are Prime Rate Loans,
     shall be due and payable monthly, in arrears, commencing on November 1,
     2001 and continuing on the first day of each calendar month thereafter, and
     on the Maturity Date. Accrued and unpaid interest on the unpaid principal
     balance of all Revolving Loans outstanding from time to time which are
     LIBOR Loans shall be payable on the last Business Day of each Interest
     Period, commencing on the first such date to occur after the date hereof,
     on the date of any principal repayment of a LIBOR Loan and on the Maturity
     Date; provided however, that interest on six month LIBOR borrowings shall
     be payable quarterly. Any amount of principal or interest on the Revolving
     Loans which is not paid when due, whether at stated maturity, by
     acceleration or otherwise, shall bear interest payable on demand at the
     Default Rate.

            (c)  REVOLVING LOAN PRINCIPAL REPAYMENTS.

                 (i)   MANDATORY PRINCIPAL PREPAYMENTS. All Revolving Loans
            hereunder shall be repaid by the Borrower on the Maturity Date,
            unless payable sooner pursuant to the provisions of this Agreement.
            In the event the aggregate outstanding principal balance of all
            Revolving Loans hereunder at any time exceed the Revolving Loan
            Commitment, the Borrower shall, without notice or demand of any
            kind, immediately make such repayments of the Revolving Loans or
            take such other actions as shall be necessary to eliminate such
            excess.

                                       11
<Page>

                 (ii)  OPTIONAL PREPAYMENTS. The Borrower may from time to time
            prepay the Revolving Loans, in whole or in part, without any
            prepayment penalty whatsoever other than as provided in this
            Agreement.

     2.2    ADDITIONAL LIBOR LOAN PROVISIONS.

            (a)  LIBOR LOAN PREPAYMENTS. Notwithstanding anything to the
     contrary contained herein, the principal balance of any LIBOR Loan may not
     be prepaid in whole or in part at any time. If, for any reason, a LIBOR
     Loan is paid prior to the last Business Day of any Interest Period, the
     Borrower agrees to indemnify the Bank against any loss (including any loss
     on redeployment of the funds repaid), cost or expense incurred by the Bank
     as a result of such prepayment.

            (b)  LIBOR UNAVAILABILITY. If the Bank determines in good faith
     (which determination shall be conclusive, absent manifest error) prior to
     the commencement of any Interest Period that (i) United States dollar
     deposits of sufficient amount and maturity for funding any LIBOR Loan are
     not available to the Bank in the London Interbank Eurodollar market in the
     ordinary course of business, or (ii) by reason of circumstances affecting
     the London Interbank Eurodollar market, adequate and fair means do not
     exist for ascertaining the rate of interest to be applicable to the
     relevant LIBOR Loan, the Bank shall promptly notify the Borrower thereof
     and, so long as the foregoing conditions continue, a Revolving Loan may not
     be advanced as a LIBOR Loan thereafter. In addition, at the Borrower's
     option, each existing LIBOR Loan shall be immediately (i) converted to a
     Prime Rate Loan on the last Business Day of the then existing Interest
     Period, or (ii) due and payable on the last Business Day of the then
     existing Interest Period, without further demand, presentment, protest or
     notice of any kind, all of which are hereby waived by the Borrower.

            (c)  REGULATORY CHANGE. In addition, if, after the date hereof, a
     Regulatory Change shall, in the reasonable determination of the Bank, make
     it unlawful for the Bank to make or maintain the LIBOR Loans, then the Bank
     shall promptly notify the Borrower and Revolving Loans may not be advanced
     as a LIBOR Loan thereafter. In addition, at the Borrower's option, each
     existing LIBOR Loan shall be immediately (i) converted to a Prime Loan on
     the last Business Day of the then existing Interest Period or on such
     earlier date as required by law, or (ii) due and payable on the last
     Business Day of the then existing Interest Period or on such earlier date
     as required by law, all without further demand, presentment, protest or
     notice of any kind, all of which are hereby waived by the Borrower.

            (d)  LIBOR LOAN INDEMNITY. If any Regulatory Change shall (a)
     impose, modify or deem applicable any assessment, reserve, special deposit
     or similar requirement against assets held by, or deposits in or for the
     account of or loans by, or any other acquisition of funds or disbursements
     by, the Bank; (b) subject the Bank or any LIBOR Loan to any tax, duty,
     charge, stamp tax or fee or change the basis of taxation of payments to the
     Bank of principal or interest due from the Borrower to the Bank hereunder
     (other than a change in the taxation of the overall net income of the
     Bank); or

                                       12
<Page>

     (c) impose on the Bank any other condition regarding such LIBOR Loan or the
     Bank's funding thereof, and the Bank shall reasonably determine (which
     determination shall be conclusive, absent manifest error) that the result
     of the foregoing is to increase the cost to the Bank of making or
     maintaining such LIBOR Loan or to reduce the amount of principal or
     interest received by the Bank hereunder, then the Borrower shall pay to the
     Bank, within 15 days of demand by the Bank, such additional amounts as the
     Bank shall, from time to time, determine are sufficient to compensate and
     indemnify the Bank for that portion of such increased cost or reduced
     amount attributable to making, funding and maintaining such LIBOR Loan.

     2.3    INTEREST AND FEE COMPUTATION; COLLECTION OF FUNDS. Except as
otherwise set forth herein, all interest and fees shall be calculated on the
basis of a year consisting of 360 days and shall be paid for the actual number
of days elapsed. Principal payments submitted in funds not immediately available
shall continue to bear interest until collected. If any payment to be made by
the Borrower hereunder or under the Note shall become due on a day other than a
Business Day, such payment shall be made on the next succeeding Business Day and
such extension of time shall be included in computing any interest in respect of
such payment.

     2.4    FEES. The Borrower further agrees to pay to the Bank the Facility
Fee for the period from the date hereof to and including the Maturity Date. The
Facility Fee shall be payable quarterly in advance on the date hereof and on
each Payment Date thereafter. The obligations of the Borrower under this Section
2.4 shall survive the payment of the Advances and the termination of this
Agreement.

3.   CONDITIONS OF BORROWING.

     Notwithstanding any other provision of this Agreement, the Bank shall not
be required to disburse or make all or any portion of the Loans if any of the
following conditions shall have occurred.

     3.1    LOAN DOCUMENTS. The Borrower shall have failed to execute and
deliver to the Bank any of the following Loan Documents (collectively, the "Loan
Documents"), all of which must be satisfactory to the Bank and the Bank's
counsel in form, substance and execution:

            (a)  Revolving Loan Agreement. Two copies of this Agreement clearly
     executed by the Borrower.

            (b)  Revolving Note. A Revolving Note duly executed by the Borrower
     in the form of Exhibit A.

            (c)  A copy, certified as of the date hereof by the secretary or
     assistant secretary of the Borrower, of its board of directors' resolutions
     (and resolutions of other bodies, if any are deemed necessary by counsel
     for the Bank) authorizing the execution of the Loan Documents.

                                       13
<Page>

            (d)  An incumbency certificate dated the date hereof, executed by
     the secretary or assistant secretary of the Borrower, which shall identify
     by name and title and bear the signature of the officers of the Borrower
     authorized to sign the Loan Documents and to make borrowings hereunder,
     upon which certificate the Bank shall be entitled to rely until informed of
     any change in writing by the Borrower.

            (e)  A certificate signed by the chief financial officer of the
     Borrower stating that on the closing date no Default or Unmatured Default
     has occurred and is continuing.

            (f)  A written opinion dated the date hereof of the Borrower's
     counsel, addressed to the Bank.

            (g)  A certified copy of articles of incorporation.

            (h)  A certified copy of a good standing certificate for the
     Borrower, and the following Subsidiaries: AAR Manufacturing, Inc., AAR
     Parts Trading, Inc., and AAR Distribution, Inc.

            (i)  Such other documents as the Bank or its counsel may have
     reasonably requested.

     3.2    EVENT OF DEFAULT. Any Event of Default, or any event which, with
notice or lapse of time, or both would constitute an Event of Default, shall
have occurred and be continuing.

     3.3    ADVERSE EFFECT.  There exists no Material Adverse Effect.

     3.4    LITIGATION. Any litigation or governmental proceeding shall have
been instituted against the Borrower or any of its Subsidiaries which in the
discretion of the Bank, reasonably exercised, has a Material Adverse Effect on
the financial condition or continued operation of the Borrower and its
Subsidiaries taken as a whole.

     3.5    REPRESENTATIONS AND WARRANTIES. Any representation or warranty of
the Borrower contained herein or in any Loan Document shall be untrue or
incorrect in any material way as of the date of any Loan as though made on such
date, except to the extent such representation or warranty expressly relates to
an earlier date.

4.   NOTES EVIDENCING LOANS.

     The Revolving Loans shall be evidenced by a single Revolving Note (together
with any and all renewal, extension, modification or replacement notes executed
by the Borrower and delivered to the Bank and given in substitution therefor,
the "Revolving Note") dated as of the date hereof in the form of EXHIBIT "A"
attached hereto, duly executed by the Borrower and payable to the order of the
Bank. At the time of the initial disbursement of a Revolving Loan and at each
time an additional Revolving Loan shall be requested hereunder or a repayment
made in whole or in part thereon, an appropriate notation thereof shall be made
on the books and records of the Bank. All amounts recorded shall be, absent
demonstrable error, conclusive and

                                       14
<Page>

binding evidence of (i) the principal amount of the Revolving Loans advanced
hereunder (ii) any unpaid interest owing on the Revolving Loans, and (iii) all
amounts repaid on the Revolving Loans. The failure to record any such amount or
any error in recording such amounts shall not, however, limit or otherwise
affect the obligations of the Borrower under the Revolving Note to repay the
principal amount of the Revolving Loans, together with all interest accruing
thereon.

5.   MANNER OF BORROWING.

     Each Revolving Loan shall be made available to the Borrower upon its
written request in the form of EXHIBIT B, from any person whose authority to so
act has not been revoked by the Borrower in writing previously received by the
Bank. Each Revolving Loan may be advanced either as a Prime Loan or a LIBOR
Loan, provided, however, that at any time and from time to time, the Borrower
may identify no more than five (5) Revolving Loans, which may be LIBOR Loans. A
request for a Prime Loan must be received by no later than 12:00 p.m. Chicago,
Illinois time, on the day it is to be funded. A request for a LIBOR Loan must be
(i) received by no later than 12:00 p.m. Chicago, Illinois time, two days before
the day it is to be funded, and (ii) in an amount equal to One Million and
00/100 Dollars ($1,000,000.00) or a higher integral multiple of Five Hundred
Thousand and 00/100 Dollars ($500,000.00). If for any reason the Borrower shall
fail to select timely an Interest Period for an existing LIBOR Loan, then such
LIBOR Loan shall be immediately converted to a Prime Loan on the last Business
Day of the then existing Interest Period, all without demand, presentment,
protest or notice of any kind, all of which are hereby waived by the Borrower.
The proceeds of each Prime Loan or LIBOR Loan shall be made available at the
office of the Bank by credit to the account of the Borrower or by other means
requested by the Borrower and acceptable to the Bank.

     The Bank is authorized to rely on the telephonic, telecopy (including
facsimile copy) or telegraphic loan requests which the Bank believes in its good
faith judgment to emanate from a properly authorized representative of the
Borrower, whether or not that is in fact the case. The Borrower does hereby
irrevocably confirm, ratify and approve all such forms of loan requests referred
to in the aforementioned sentence and advances by the Bank in reasonable
reliance thereon and does hereby indemnify the Bank against losses and expenses
(including court costs, attorneys' and paralegals' fees) and shall hold the Bank
harmless with respect thereto.

6.   INTENTIONALLY OMITTED.

7.   REPRESENTATIONS AND WARRANTIES.

     To induce the Bank to make the Loans, the Borrower makes the following
representations and warranties to the Bank, each of which shall be true and
correct as of the date of the execution and delivery of this Agreement, and
which shall survive the execution and delivery of this Agreement:

     7.1    ORGANIZATION. The Borrower is duly organized, existing and in good
standing under the laws of the State of Delaware and it has full and adequate
power to carry on and conduct its business as presently conducted, and it is
duly licensed or qualified in all foreign jurisdictions wherein the failure to
qualify would have a Material Adverse Effect, and each

                                       15
<Page>

Subsidiary of the Borrower is duly organized, existing and in good standing
under the laws of the state wherein such Subsidiary was organized or formed,
with full and adequate power to carry on and conduct its business as presently
conducted, and is duly licensed or qualified in all foreign jurisdictions
wherein the failure to qualify would have a Material Adverse Effect.

     7.2    AUTHORIZATION; VALIDITY. The Borrower has full right, power and
authority to enter into this Agreement, to make the borrowings and execute and
deliver the Loan Documents as provided herein and to perform all of its duties
and obligations under this Agreement and the Loan Documents. The execution and
delivery of this Agreement and the Loan Documents will not, nor will the
observance or performance of any of the matters and things herein or therein set
forth, violate or contravene any provision of law to which the Borrower is
subject. All necessary and appropriate action has been taken on the part of the
Borrower to authorize the execution and delivery of this Agreement and the Loan
Documents. This Agreement and the Loan Documents are valid and binding
agreements and contracts of the Borrower enforceable against the Borrower in
accordance with their respective terms, except as enforceability may be limited
by bankruptcy, insolvency, equity or similar laws affecting the enforcement of
creditors rights generally.

     7.3    COMPLIANCE WITH LAWS. The nature and transaction of the business and
operations of the Borrower, and the use of its properties and assets, including,
but not limited to, any real estate owned or occupied by the Borrower or its
Subsidiaries, do not and during the term of the Loans shall not, violate or
conflict with any applicable law, statute, ordinance, rule, regulation or order
of any kind or nature binding on the Borrower or any of its Subsidiaries,
including, without limitation, the provisions of the Fair Labor Standards Act or
any zoning, land use, building, noise abatement, occupational health and safety
or other laws, including Environmental Laws, any building permit or any
condition, grant, easement, covenant, condition or restriction, whether recorded
or not binding on the Borrower or any or its Subsidiaries except where the
failure to comply would not be reasonably expected to have a Material Adverse
Effect.

     7.4    ENVIRONMENTAL LAWS AND HAZARDOUS SUBSTANCES. Neither the Borrower
nor any Subsidiary has received any notice to the effect that its operations are
not in material compliance with any applicable Environmental Laws or the subject
of any federal or state investigation evaluating whether any remedial action is
needed to respond to a release of Hazardous Materials into the environment which
non-compliance or remedial action could reasonably be expected to have a
Material Adverse Effect.

     7.5    ABSENCE OF BREACH. The execution, delivery and performance of this
Agreement, the Loan Documents and any other documents or instruments to be
executed and delivered by the Borrower in connection with the Loans shall not:
(i) violate any provisions of law or any applicable regulation, order, writ,
injunction or decree of any court or governmental authority binding on the
Borrower, or (ii) violate or result in any breach or default of any of the
terms, covenants, conditions, or provisions of any indenture, mortgage, deed of
trust, other instrument, agreement or contract of any kind to which the
Borrower, is a party or by which the Borrower, or any of its property or assets
may be bound.

                                       16
<Page>

     7.6    FINANCIAL STATEMENTS. All financial statements submitted to the Bank
have been prepared in accordance with GAAP on a basis, except as otherwise noted
therein, consistent with the previous fiscal year and fairly present the
financial condition of the Borrower and the consolidated results of the
operations for the Borrower and its Subsidiaries as of such date and for the
periods indicated. Since the May 31, 2001 financial statement submitted by the
Borrower to the Bank, there has been no Material Adverse Effect in the financial
condition or in the assets or liabilities of the Borrower and its Subsidiaries
taken as a whole.

     7.7    LITIGATION. There is no litigation or governmental proceeding
pending, or to the knowledge of the Borrower, threatened, against the Borrower,
which, if adversely determined, would result in any Material Adverse Effect in
the financial condition or properties, business or operations of the Borrower.
The Borrower has filed or will file all applicable material income or other
material tax returns and has paid or will pay all material income or other
material taxes when due. There is no material controversy or objection pending,
or to the knowledge of the Borrower, threatened in respect of any material tax
returns of the Borrower.

     7.8    EVENT OF DEFAULT. No Event of Default has occurred and is
continuing, and no event has occurred and is continuing which, with the lapse of
time, the giving of notice, or both, would constitute such an Event of Default
under this Agreement or any of the Loan Documents and the Borrower and/or
Subsidiaries are not in default (without regard to grace or cure periods) under
any contract or agreement to which it is a party, the effect of which default
shall materially adversely affect the performance by the Borrower of its
obligations pursuant to and as contemplated by the terms and provisions of this
Agreement.

     7.9    ERISA OBLIGATIONS. The Borrower and its Subsidiaries have promptly
paid and discharged all obligations and liabilities arising under the Employee
Retirement Income Security Act of 1974 ("ERISA") of a character which if unpaid
or unperformed might result in the imposition of a Lien against any of its
properties or assets.

     7.10   ADVERSE CIRCUMSTANCES. There is no Material Averse Effect.

     7.11   LENDING RELATIONSHIP. The Borrower acknowledges and agrees that the
relationship hereby created with the Bank is and has been conducted on an open
and arm's length basis in which no fiduciary relationship exists and that the
Borrower has not relied and is not relying on any such fiduciary relationship in
executing this Agreement and in consummating the Loans. The Bank represents that
it will receive the Note payable to its order as evidence of a bank loan.

     7.12   INTENTIONALLY OMITTED.

     7.13   COMPLIANCE WITH REGULATION U. No portion of the proceeds of the
Loans shall be used by the Borrower, or its Subsidiaries, either directly or
indirectly, for the purpose of purchasing or carrying any margin stock, within
the meaning of Regulation U as adopted by the Board of Governors of the Federal
Reserve System.

                                       17
<Page>

     7.14   COMPLETE INFORMATION. This Agreement and all financial statements,
schedules, certificates, confirmations, agreements, contracts, and other
materials submitted to the Bank in connection with or in furtherance of this
Agreement by or on behalf of the Borrower fully and fairly state the matters
with which they purport to deal, and neither misstate any material fact nor,
separately or in the aggregate, fail to state any material fact necessary to
make the statements made not misleading.

     7.15   PLACE OF BUSINESS. The principal place of business of the Borrower
is 1100 North Wood Dale Road, Wood Dale, Illinois 60191 and the Borrower shall
promptly notify the Bank of any change in such location.

     7.16   PLACE OF INCORPORATION. The place of incorporation of the Borrower
is the State of Delaware and the Borrower shall promptly notify the Bank of any
change in such location.

8.   NEGATIVE COVENANTS.

     8.1    RESTRICTED PAYMENTS. The Borrower will not, nor will it permit any
Subsidiary to, declare or make any Restricted Payments, which together with all
Restricted Payments made on or after May 31, 1995 would exceed an amount equal
to the sum of (i) $20,000,000 plus (ii) 50% of Consolidated Net Income for the
period commencing June 1, 1994 and extending to and including the last day of
the fiscal year of the Borrower immediately preceding the date on which such
Restricted Payment was made, said period to be taken as one accounting period,
except that:

            (a)  The Borrower may declare and pay dividends payable solely in
     stock of the Borrower of the same class as that on which such dividend is
     paid.

            (b)  The Borrower may purchase, redeem or otherwise acquire or
     retire any class of its stock out of the proceeds of, or in exchange for, a
     substantially concurrent issue and sale of such stock in addition to that
     now issued and outstanding; provided that Borrower is in compliance with
     all affirmative, negative and financial covenants herein.

            (c)  Any Subsidiary may declare and pay dividends to the Borrower.

     8.2    MERGER. The Borrower will not, nor will it permit any Subsidiary to,
merge or consolidate with or into any other Person, except that:

            (a)  Any Domestic Subsidiary may merge or consolidate with the
     Borrower (providing the Borrower shall be the continuing or surviving
     corporation).

            (b)  Any Domestic Subsidiary may merge or consolidate with any other
     Domestic Subsidiary, which is a Wholly Owned Subsidiary.

            (c)  Any Foreign Subsidiary may merge or consolidate with any other
     Subsidiary, which is a Wholly Owned Subsidiary (provided that if a Domestic
     Subsidiary is involved, such Domestic Subsidiary shall be the continuing or
     surviving corporation).

                                       18
<Page>

     8.3    SALE OF ASSETS. The Borrower will not, nor will it permit any
Subsidiary to, sell, lease, transfer, assign or otherwise dispose of (including,
for the avoidance of doubt, in connection with a sale leaseback transaction),
any of its assets (including, for the avoidance of doubt, the capital stock of
Subsidiaries, but excluding (i) inventory sold in the ordinary course of the
Borrower's or any Subsidiary's business, (ii) property formerly used in the
Borrower's or any Subsidiary's business which is worn out or obsolete, (iii)
assets of any Domestic Subsidiary transferred to the Borrower or to another
Domestic Subsidiary which is a Wholly-Owned Subsidiary, (iv) assets of any
Foreign Subsidiary transferred to the Borrower or to another Subsidiary which is
a Wholly-Owned Subsidiary, (v) assets permitted to be sold or otherwise
transferred pursuant to Section 8.4 and (vi) promissory note ("Payment Note")
received as partial or full payment for assets sold if, after giving effect
thereto, the sum of all such assets transferred, assigned or otherwise disposed
of during the twelve-month period ending with (and including) the month of such
disposition either (a) represents more than 10% of Consolidated Assets
determined as of the date of (and after giving effect to ) such disposition or
(b) were responsible for more than 10% of the consolidated net sales or of the
consolidated net income of the Borrower and its Subsidiaries during such
twelve-month period.

     8.4    SALE OF ACCOUNTS RECEIVABLE. Anything in Section 8.3 to the contrary
notwithstanding, the Borrower will not, nor will it permit any Subsidiary to,
sell, with or without recourse, transfer, assign, encumber or otherwise dispose
of any of its note or accounts receivable, leases or chattel paper (collectively
referred to in this Section as "Accounts Receivable") to any Person, except
that:

            (a)  The Borrower or any Subsidiary may sell or otherwise dispose of
     any of its Accounts Receivable to the Borrower or any Subsidiary on terms
     and conditions, which are in compliance with Section 8.9.

            (b)  The Borrower or any Subsidiary may enter into any arrangement
     with another Person pursuant to which such Person collects the Accounts
     Receivable of the Borrower or such Subsidiary on behalf of the Borrower or
     such Subsidiary, so long as such arrangement does not provide for any
     transfer of title to, or any other interest in, such Accounts Receivable to
     such Person.

            (c)  The Borrower or any Subsidiary may sell or otherwise dispose of
     its Foreign Accounts to any Person for the purposes of collection, provided
     that the aggregate face amount of all such Foreign Accounts so transferred
     by the Borrower and its Subsidiaries during any fiscal year of the Borrower
     shall not exceed an amount equal to 20% of the gross Accounts Receivable of
     the Borrower and its Subsidiaries as of the last day of the Borrower's
     immediately preceding fiscal year and determined from the Borrower's
     consolidated balance sheet delivered pursuant to Section 9.7(a).

            (d)  The Borrower or any Subsidiary may sell or otherwise dispose of
     its interest in notes or accounts receivable on a limited recourse basis,
     provided that such transfer qualifies as a sale under GAAP and that the
     amount of such financing does not exceed $50,000,000 at any one time
     outstanding (the "Receivables Securitization").

                                       19
<Page>

            (e)  The Borrower or any Subsidiary may sell or otherwise dispose of
     a Payment Note.

     8.5    INVESTMENTS AND ACQUISITIONS. The Borrower will not, nor will it
permit any Subsidiary to, make or suffer to exist any Investments (including
without limitation, loans and advances to, and other Investments in,
Subsidiaries), or commitments therefor, or to create any Subsidiary or to become
or remain a partner in any partnership or joint venture, or to make any
Acquisition of any Person, except:

            (a)  Short-term obligations of, or fully guaranteed by, the United
     States of America.

            (b)  Commercial paper rated A-1 or better by Standard and Poor's
     Ratings Services, a division of McGraw Hill Companies, Inc. or P-1 or
     better by Moody's Investors Service, Inc.

            (c)  Demand deposit accounts maintained in the ordinary course of
     business.

            (d)  Certificates of deposit issued by and time deposits with
     commercial banks (whether domestic or foreign) having capital and surplus
     in excess of $100,000,000.

            (e)  Existing Investments in Subsidiaries and other Investments in
     existence on the date hereof.

            (f)  Loans by the Borrower to its Domestic Subsidiaries.

            (g)  Equity Investment by the Borrower or any of its Subsidiaries,
     AAR Financial Services Corp. in leveraged leases of aircraft, aircraft
     engines and related products, including investments in partnerships and/or
     joint ventures related thereto not to exceed $50,000,000.00 in the
     aggregate outstanding at any one time.

            (h)  Loans by the Borrower and its Subsidiaries to their respective
     officers and key employees in an aggregate amount not to exceed $4,000,000
     at any one-time outstanding.

            (i)  Investments in any institutional money market fund (i) rated
     A-1 or better by Standard and Poor's Ratings Services, a division of McGraw
     Hill Companies, Inc., (ii) rated P-1 by Moody's Investors Service, Inc. or
     (iii) that invests in High Quality Money Market Instruments. For purposes
     of this Agreement, "High Quality Money Market Instruments" are (i) U.S.
     dollar-denominated instruments that have a remaining maturity of 397 days
     or less and (ii) issued by an issuer that is rated in one of the two
     highest rating categories for short-term debt by any two nationally
     recognized statistical rating organizations ("NRSROs") or, if only one
     NRSRO has issued a rating, by that NRSRO, or if unrated, the investment
     advisor determines the issuer is of comparable quality.

                                       20
<Page>

            (j)  Investments evidenced by Payment Notes.

            (k)  Any Acquisition that after giving effect thereto does not cause
     the sum of (i) Consolidated Funded Debt, plus (ii) the aggregate amount of
     Contingent Obligations of the Borrower and its Subsidiaries to exceed 55%
     of Consolidated Total Capitalization.

            (l)  Investments (including without limitation Investments in funds
     (insured or uninsured) managed by banks federally chartered by the United
     States of America and having stockholders' equity in excess of
     $150,000,000) in addition to those permitted under clauses (a) through (k)
     of this Section, provided that after giving effect thereto the aggregate
     amount of all such Investments for the Borrower and all Subsidiaries during
     the term of this Agreement shall not exceed the greater of (i) $6,000,000
     or (ii) 20% of Consolidated Tangible Net Worth as of the last day of the
     Borrower's fiscal year immediately preceding the date on which any such
     Investment is made.

            In determining the amount of Investments permitted under this
     Section, Investments shall always be taken at the original cost thereof,
     regardless of any subsequent appreciation or depreciation therein, and
     loans and advances shall be taken at the principal amount thereof then
     remaining unpaid from time to time.

     8.6    LIENS. The Borrower will not, nor will it permit any Subsidiary to,
create, incur, or suffer to exist any Lien in, of or on the property of the
Borrower or any of its Subsidiaries, except:

            (a)  Liens for taxes, assessments or governmental charges or levies
     on its property if the same shall not at the time be delinquent or
     thereafter can be paid without penalty, or are being contested in good
     faith and by appropriate proceedings and for which adequate reserves in
     accordance with GAAP shall have been set aside on its books.

            (b)  Deposits or pledges to secure performance of bids, tenders,
     contracts (other than contracts for the repayment of Indebtedness), leases,
     public or statutory obligations, surety or appeal bonds, or other deposits
     or pledges for purposes of like general nature in the ordinary course of
     the Borrower's business or any Subsidiary's business.

            (c)  Liens incurred by the Borrower or any Subsidiary in connection
     with the acquisition of property provided such Liens shall attach only to
     the property acquired in the transactions in which such Liens were created
     or assumed and shall secure only the Indebtedness incurred to finance the
     cost of acquiring such property.

            (d)  Liens arising out of pledges or deposits under workers'
     compensation laws, unemployment insurance, old age pensions, or other
     social security or retirement benefits, or similar legislation.

            (e)  Liens incidental to the conduct of business or the ownership of
     properties and assets, including, those imposed by law, such as carrier's,
     warehousemen's and

                                       21
<Page>

     mechanics' liens and other similar liens arising in the ordinary course of
     business which secure payment of obligations not more than 60 days past due
     or which are being contested in good faith by appropriate proceedings and
     for which adequate reserves shall have been set aside on its books in
     accordance with GAAP, or other Liens incurred in the ordinary course of
     business and not in connection with borrowed money.

            (f)  Utility easements, other easements, leases, sub-leases,
     rights-of-way, building restrictions and such other encumbrances or charges
     against real property as are of a nature generally existing with respect to
     properties of a similar character and which do not in any material way
     affect the marketability of the same or interfere with the use thereof in
     the business of the Borrower or the Subsidiaries.

            (g)  Liens existing on the date hereof.

            (h)  Liens which secure only Indebtedness of any Domestic Subsidiary
     to the Borrower or another Domestic Subsidiary.

            (i)  Subject to Section 8.5(c), Liens on property the purchase of
     which is being financed by the Borrower or any Domestic Subsidiary, as the
     case may be, by letters of credit (or similar instruments) issued for the
     account of the Borrower or any Domestic Subsidiary, as the case may be,
     provided such Liens secure only the letter of credit (or similar
     instrument) which is being used to finance the purchase of such property
     and provided further such Liens attach only to such property.

            (j)  Liens incurred by the Borrower in connection with the real
     estate located in Wood Dale, Illinois, known as the Corporate Headquarters
     of the Borrower securing debt not to exceed Twenty Five Million Dollars
     ($25,000,000.00).

            (k)  Liens incurred by the Borrower and its Subsidiaries in
     connection with the Receivable Securitization not to exceed Fifty Million
     Dollars ($50,000,000.00) at any one-time outstanding.

     8.7    RENTALS. The Borrower will not, nor will it permit any Subsidiary
to, create, incur or suffer to exist any obligation for Rentals if, as a
consequence thereof, obligations for Rentals created, incurred or suffered to
existing any one fiscal year shall be in an aggregate consolidated amount for
the Borrower and its Subsidiaries in excess of 10% of Consolidated Revenues (as
defined below) as at the end of the Borrower's fiscal year immediately preceding
the date on which such obligation is entered into, on a non-cumulative basis
from year to year. It is expressly agreed and understood that, for the purpose
of this Section, any contract between the Borrower or any Domestic Subsidiary
and the vendor of aircraft fuel shall not be considered a lease and any payments
made under any such contract by the Borrower or any Domestic Subsidiary to such
vendor shall not be considered a lease payment. "Consolidated Revenues" shall
mean the amount of "net revenues" as shown on the Borrower's consolidated income
statement.

                                       22
<Page>

     8.8    RETIREMENT AND MODIFICATION OF SUBORDINATED INDEBTEDNESS. The
Borrower will not, nor will it permit any Subsidiary to, purchase, acquire,
redeem or retire, or make any payment on account of principal of, any
Subordinated Debt except at the stated maturity thereof or as required by
mandatory prepayment provisions or sinking fund provisions relating thereto. The
Borrower will not, nor will it permit any Subsidiary to, alter, amend, modify,
rescind, terminate or waive, or permit any breach or event of default to exist
under, any note or note evidencing such Subordinated Debt.

     8.9    AFFILIATES. The Borrower will not, and will not permit any
Subsidiary to, enter into any transaction (including, without limitation, the
purchase or sale of any property or service), with, or make any payment or
transfer to, any Affiliate except in the ordinary course of business and
pursuant to the reasonable requirements of the Borrower's or such Subsidiary's
business and upon fair and reasonable terms not less favorable to the Borrower
or such Subsidiary than the Borrower or such Subsidiary would obtain in a
comparable arms-length transaction. The transactions entered into in connection
with the Receivables Securitization shall be deemed to be arms-length
transactions.

     8.10   MODIFICATION OF ORGANIZATIONAL DOCUMENTS. Not permit the Certificate
or Articles of Incorporation, By-Laws or other organizational documents of the
Borrower to be amended or modified in any way that might reasonably be expected
to materially adversely affect the interests of the Bank.

9.   AFFIRMATIVE COVENANTS.

     9.1    COMPLIANCE WITH BANK REGULATORY REQUIREMENTS. Upon demand by the
Bank, the Borrower shall reimburse the Bank for the Bank's additional costs
and/or reductions in the amount of principal or interest received or receivable
by the Bank if at any time after the date of this Agreement any law, treaty or
regulation or any change in any law, treaty or regulation or the interpretation
thereof by any governmental authority charged with the administration thereof or
any central bank or other fiscal, monetary or other authority having
jurisdiction over the Bank or the Loans, whether or not having the force of law,
shall impose, modify or deem applicable any reserve (except reserve requirements
taken into account in calculating the Interest Rate) and/or special deposit
requirement against or in respect of assets held by or deposits in or for the
account of the Loans by the Bank or impose on the Bank any other condition with
respect to this Agreement or the Loans, the result of which is to either
increase the cost to the Bank of making or maintaining the Loans or to reduce
the amount of principal or interest received or receivable by the Bank with
respect to such Loans. Said additional costs and/or reductions will be those
which directly result from the imposition of such requirement or condition on
the making or maintaining of such Loans. All Loans shall be deemed to be match
funded for the purposes of the Bank's determination in the previous sentence.
Notwithstanding the foregoing, the Borrower shall not be required to pay any
such additional costs, which could be avoided by the Bank with the exercise of
reasonable conduct and diligence.

     9.2    CONDUCT OF BUSINESS. The Borrower will, and will cause each
Subsidiary to, carry on and conduct its business in substantially the same
manner and in substantially the same fields of enterprise as it is presently
conducted and to do all things necessary to remain duly

                                       23
<Page>

incorporated, validly existing and in good standing as a domestic or foreign
corporation, as the case may be, in its jurisdiction of incorporation and main
all requisite authority to conduct its business in each jurisdiction in which
its business is conducted; PROVIDED, that nothing contained in this Section 9.2
shall prohibit (a) any Subsidiary from entering into a merger or consolidation
otherwise permitted by SECTION 8.2 or (b) the liquidation of any Subsidiary
substantially all of whose assets have been transferred to the Borrower or
another Subsidiary in compliance with SECTION 8.3.

     9.3    INSURANCE. The Borrower will, and will cause each Subsidiary to,
maintain with financially sound and reputable insurance companies insurance on
all their property in such amounts and covering such risks as is consistent with
sound business practice, and the Borrower will furnish to Bank upon request full
information as to the insurance carried.

     9.4    TAX LIABILITIES. The Borrower and its Subsidiaries will at all times
pay and discharge all property and other taxes, assessments and governmental
charges upon, and all claims (including claims for labor, materials and
supplies) against the Borrower, and its Subsidiaries, or any of their respective
properties, before the same shall become delinquent and before penalties accrue
thereon, unless and to the extent that the same are being contested in good
faith by appropriate proceedings, or would not have a Material Adverse Effect.

     9.5    ERISA LIABILITIES. The Borrower and its Subsidiaries shall at all
times promptly pay and discharge all ERISA obligations and liabilities of a
character which if unpaid or unperformed might result in the imposition of a
Lien against any of its properties or assets and will promptly notify the Bank
of (i) the occurrence of any Reportable Event which might result in the
termination by the PBGC of any Plan covering any officers or employees of the
Borrower, any benefits of which are, or are required to be, guaranteed by PBGC,
(ii) receipt of any notice from PBGC of its intention to seek termination of the
Plan or appointment of a trustee therefor, and (iii) its intention to terminate
or withdraw from the Plan. Neither the Borrower nor any Subsidiary shall
terminate any such Plan or withdraw therefrom unless it shall be in compliance
with all of the terms and conditions of this Agreement after giving effect to
any liability to PBGC resulting from such termination or withdrawal.

     9.6    FINANCIAL STATEMENTS. The Borrower shall at all times maintain a
standard and modern system of accounting, on the accrual basis of accounting and
in all respects in accordance with GAAP, and shall furnish to the Bank or its
authorized representatives such information regarding the business affairs,
operations and financial condition of the Borrower and its Subsidiaries,
including, but not limited to:

            (a)  as soon as available, and in any event, within 90 days after
     the close of each of its fiscal years, a copy of the annual audited
     financial statements of the Borrower and its Subsidiaries, on a
     consolidated and consolidating basis, including balance sheet, statement of
     income and retained earnings, statement of cash flows for the fiscal year
     then ended and such other information (including nonfinancial information)
     as the Bank may reasonably request, in reasonable detail, prepared and
     certified by an independent certified public accountant acceptable to the
     Bank, containing an unqualified opinion; and

                                       24
<Page>

            (b)  as soon as available, and in any event, within 45 days
     following the end of each fiscal quarter, a copy of the unaudited financial
     statements of the Borrower and its Subsidiaries, on a consolidated and
     consolidating basis, regarding such fiscal quarter, including balance
     sheet, statement of income and retained earnings, statement of cash flows
     for the fiscal quarter then ended and the fiscal year to date and such
     other information (including nonfinancial information) as the Bank may
     request, in reasonable detail, prepared and certified as accurate by the
     Borrower; and

            (c)  At the request of the Lender, within 90 days after the close of
     each fiscal year of the Borrower, for each active Subsidiary, an unaudited
     balance sheet as at the close of such fiscal year and an unaudited profit
     and loss statement for such fiscal year, all certified by the Borrower's
     chief financial officer or Treasurer.

            (d)  At the request of the Lender, within 60 days after the close of
     the first three quarterly periods of each of its fiscal years, for each
     active Subsidiary, an unaudited balance sheet as at the close of each such
     period and an unaudited profit and loss statement for the period from the
     beginning of such fiscal year to the end of such quarter, all certified by
     the Borrower's chief financial officer or Treasurer.

            (e)  Within 270 days after the close of each fiscal year, a
     statement of the Unfunded Liabilities of each Single Employer Plan,
     certified as correct by an actuary enrolled under ERISA, except that the
     Borrower shall not be required to deliver such statement for any such
     fiscal year to the extent that such information is specifically set forth
     in the audit report for such fiscal year delivered to the Lender pursuant
     to clause (a) of this Section 9.6.

            (f)  As soon as possible and in any event within 10 days after the
     Borrower knows that any Reportable Event has occurred with respect to any
     Plan, a statement, signed by the chief financial officer or Treasurer of
     the Borrower, describing said Reportable Event and the action which the
     Borrower proposes to take with respect thereto.

     The Borrower represents and warrants to the Bank that the financial
statements delivered to the Bank at or prior to the execution and delivery of
this Agreement and to be delivered at all times thereafter fairly present the
financial condition of the Borrower and its Subsidiaries. The Bank shall have
the right at all times during business hours to inspect the books and records of
the Borrower and its Subsidiaries and make extracts therefrom. The Borrower
agrees to advise the Bank immediately of any Material Adverse Effect in the
financial condition, the operations or any other status of the Borrower or any
of its Subsidiaries.

     9.7    SUPPLEMENTAL FINANCIAL STATEMENTS. The Borrower shall immediately
upon receipt thereof, provide to the Bank copies of interim and supplemental
reports if any, submitted to the Borrower or any of its Subsidiaries by
independent accountants in connection with any interim audit or review of the
books of the Borrower or any of its Subsidiaries.

                                       25
<Page>

     9.8    COVENANT/QUARTER COMPLIANCE REPORT. The Borrower shall, within 45
days after the end of each fiscal quarter commencing with the fiscal quarter
ending November 30, 2001, deliver to the Bank a computation in such detail as
the Bank shall specify, showing compliance by the Borrower with the financial
covenants set forth in Section 10, and certified to as accurate by the Borrower
by execution and delivery to the Bank of a Compliance Certificate satisfactory
to the Bank.

     9.9    OTHER REPORTS. The Borrower shall, within such period of time as the
Bank may specify, deliver to the Bank such other information (including
non-financial information) as the Bank may reasonably request.

     9.10   NOTICE OF PROCEEDINGS. The Borrower shall, promptly after knowledge
thereof shall have come to the attention of any officer of the Borrower, give
written notice to the Bank of all threatened or pending actions, suits, and
proceedings before any court or governmental department, commission, board or
other administrative agency which, if adversely determined would reasonably be
expected to have a Material Adverse Effect on the business, property or
operations of the Borrower and any of its Subsidiaries.

     9.11   NOTICE OF DEFAULT. The Borrower shall, within 10 days of its
knowledge, give notice to the Bank in writing of the occurrence of an Event of
Default.

     9.12   SEC REPORTS AND REPORTS TO SHAREHOLDERS. The Borrower shall deliver
to the Bank, promptly upon the filing or sending thereof, copies of all regular,
periodic or special reports of the Borrower or any Subsidiary filed with the
Securities and Exchange Commission ("SEC"); copies of all registration
statements of the Borrower or any Subsidiary filed with the SEC; and copies of
all proxy statements or other communications made to security holders generally.
In addition after an Event of Default, Borrower shall deliver to the Bank
promptly upon receipt thereof, copies of any reports received from the SEC.

     9.13   OTHER DOCUMENTS. The Borrower shall deliver to Bank, promptly upon
receipt thereof, copies of all documents entered into between Borrower and
Borrower's Unsecured Lenders, including but not limited to any and all
amendments, modifications, extensions, waivers, forbearance agreements,
instruments and all documents required to be delivered in accordance with all
said documents.

10.  FINANCIAL COVENANTS.

     10.1   WORKING CAPITAL. The Borrower will maintain at all times a ratio of
Consolidated Current Assets to Consolidated Current Liabilities of at least 1.50
to 1.00.

     10.2   CONSOLIDATED TANGIBLE NET WORTH. The Borrower will maintain at all
times Consolidated Tangible Net Worth in an amount not less than the sum of (a)
$240,000,000 plus (b) the net cash proceeds received by the Borrower from the
sale of any of its capital stock on or after May 31, 2000 plus (c) an amount
equal to the aggregate of one-third of Consolidated Net Income earned during
each of its fiscal years beginning with its fiscal year commencing June 1, 2000,
said fiscal year to be taken as one accounting period.

                                       26
<Page>

     10.3   CONSOLIDATED SECURED LIABILITIES. The Borrower will maintain at all
times Consolidated Secured Liabilities in an amount not in excess of $20,000,000
in addition to the permitted Liens under Section 8.6. For purposes of
calculating Consolidated Secured Liabilities hereunder the obligations of the
Borrower less than $10,000,000, secured by the real estate located in Wood Dale,
Illinois, known as the Corporate Headquarters of the Borrower, shall be
excluded.

     10.4   LIMITATION OF FUNDED DEBT. The Borrower will not permit the sum of
(i) Consolidated Funded Debt plus (ii) the aggregate amount of Contingent
Obligations of the Borrower and its Subsidiaries to exceed 60% of Consolidated
Total Capitalization; PROVIDED, however, that the Borrower will not permit the
sum of (i) Consolidated Funded Debt, plus (ii) the aggregate amount of
Contingent Obligations of the Borrower and its Subsidiaries to exceed 55% of
Consolidated Total Capitalization, in the event that the Borrower or any
Subsidiary has made any Acquisition under Section 8.5(k) of this Agreement.

     10.5   FIXED CHARGE COVERAGE RATIO. At such time as the Borrower is
obligated to maintain a Fixed Charge Coverage Ratio for the Unsecured Lenders,
the Borrower will also maintain a Fixed Charge Coverage Ratio of not less than
1.20:1:00 as of the last day of each fiscal quarter of the Borrower. The Fixed
Charge Coverage Ratio shall be determined based on four of the previous five
fiscal quarters of the Borrower that occurred immediately prior to the
calculation date, at the Borrower's option.

     10.6   OTHER FINANCIAL COVENANTS. The Borrower agrees that the foregoing
covenants shall be automatically modified to reflect the modification of any
similar financial covenant set forth in the documents between the Borrower and
Borrower's Unsecured Lenders, the effect of which is to cause said financial
covenants to be more restrictive than the financial covenants set forth herein.

11.  EVENTS OF DEFAULT.

     The Borrower, without notice or demand of any kind, shall be in default
under this Agreement upon the occurrence of any of the following events (each an
"Event of Default").

     11.1   NONPAYMENT OF OBLIGATIONS. Any amount due and owing on the Note or
any of the Obligations, whether by its terms or as otherwise provided herein, is
not paid.

     11.2   MISREPRESENTATION. Any written warranty, representation, certificate
or statement in this Agreement, the Loan Documents shall be false in any
material respect on the date when made.

     11.3   NONPERFORMANCE. Any failure to perform or default in the performance
of any covenant, condition or agreement contained in this Agreement and such
failure to perform or default in performance continues for a period of thirty
(30) days after the Borrower receives notice or knowledge from the Bank of such
failure to perform or default in performance.

                                       27
<Page>

     11.4   DEFAULT UNDER LOAN DOCUMENTS. A default under any of the other Loan
Documents, all of which covenants, conditions and agreements contained therein
are hereby incorporated in this Agreement by express reference, and such failure
to perform or default in performance continues beyond any applicable grace or
cure period, shall be and constitute an Event of Default under this Agreement
and any other of the Obligations.

     11.5   CHANGE IN CONTROL. A Change in Control shall occur.

     11.6   DEFAULT UNDER OTHER AGREEMENTS. Failure of the Borrower or any of
its Subsidiaries to pay any Indebtedness (other than the Obligations) in an
aggregate principal amount of Two Million Dollars ($2,000,000.00), when due; or
the failure by the Borrower or any of its Subsidiaries to perform any term,
provision or condition contained in any agreement or agreements under which any
Indebtedness (other than the Obligations) in an aggregate principal amount of
Two Million Dollars ($2,000,000.00) was created or is governed, or any other
event shall occur or condition exist, the effect of which is to cause, or to
permit the holder or holders of such Indebtedness in an aggregate principal
amount of Two Million Dollars ($2,000,000.00) to cause, such Indebtedness to
become due prior to its stated maturity; or any Indebtedness of the Borrower or
any of its Subsidiaries (other than the Obligations) in an aggregate principal
amount of Two Million Dollars ($2,000,000.00), shall be declared to be due and
payable or required to be prepaid (other than by a regularly scheduled payment)
prior to the stated maturity thereof; or the Borrower or any of its Subsidiaries
shall not pay, or admit in writing its inability to pay, its debts generally as
they become due in an aggregate principal amount of Two Million Dollars
($2,000,000.00).

     11.7   BANKRUPTCY. The Borrower or any of its Domestic Subsidiaries shall
(i) have an order for relief entered with respect to its under the Federal
bankruptcy laws as now or hereafter in effect, (ii) make an assignment for the
benefit of creditors, (iii) apply for, seek, consent to, or acquiesce in, the
appointment of a receiver, custodian, trustee, examiner, liquidator or similar
official for it or any substantial part of its property, (iv) institute any
proceeding seeking to adjudicate it a bankrupt or insolvent, or seeking
dissolution, winding up, liquidation, reorganization, arrangement, adjustment or
composition of it or its debts under any law relating to bankruptcy, insolvency
or reorganization or relief of debtors or fail to file an answer or other
pleading denying the material allegations of any such proceeding filed against
it, (v) take any corporate action to authorize or effect any of the foregoing
actions set forth in this Section 11.7 or (vi) fail to contest in good faith any
appointment or proceeding described in Section 11.8.

     11.8   RECEIVERSHIP. Without the application, approval or consent of the
Borrower or any of its Domestic Subsidiaries, a receiver, trustee, examiner,
liquidator or similar official shall be appointed for the Borrower or any of its
Domestic Subsidiaries or any substantial part of its property, or a proceeding
described in Section 11.7(iv) shall be instituted against the Borrower or any of
its Domestic Subsidiaries and such appointment continues undischarged or such
proceeding continues undismisssed or unstayed for a period of 30 consecutive
days.

     11.9   ASSIGNMENT FOR CREDITORS. Any Foreign Subsidiary shall have taken or
instituted or permitted to be taken or instituted any action or proceeding, or
any such action or proceeding is instituted against such Foreign Subsidiary,
whereby a substantial amount of its property shall

                                       28
<Page>

or may be assigned or in any manner transferred or delivered to any receive,
assignee, liquidator or other Person, whether appointed by such Foreign
Subsidiary or by a court or by any governmental authority or any law, whereby
such property shall or may be distributed among the creditors of such Foreign
Subsidiary, provided the aggregate claims of all such creditors against such
Foreign Subsidiary or against all such Foreign Subsidiaries shall exceed
$2,000,000 and such action or proceeding remains undismissed or unstayed on
appeal for a period of 90 days; or any governmental authority having
jurisdiction shall have taken or instituted any action or proceeding for the
dissolution or disestablishment of any Foreign Subsidiary or for the suspension
of its operations, provided the assets of any such Foreign Subsidiary or the
aggregate assets of all such Foreign Subsidiaries shall exceed $2,000,000 and
such action or proceeding remains undismissed or unstayed on appeal for a period
of 90 days; or all of the property of any Foreign Subsidiary shall have been
condemned, seized or appropriated, provided the net assets of any such Foreign
Subsidiary or the aggregate net assets of all such Foreign Subsidiaries
resulting from or the total of all claims against any Foreign Subsidiary or all
Foreign Subsidiaries resulting from any action or proceeding described in this
Section 11.9 and the amount of assets or net assets, as the case may be, of any
Foreign Subsidiary or all Foreign Subsidiaries which are subject to any action,
proceeding, condemnation, seizure or appropriation described in this Section
11.9 shall exceed $2,000,000.

     11.10  CONDEMNATION. Any court, governmental or governmental agency shall
condemn, seize or otherwise appropriate, or take custody or control of all or
any substantial portion of the property of the Borrower or any of its
Subsidiaries.

     11.11  JUDGMENTS. The Borrower or any of its Subsidiaries shall fail within
30 days to pay, bond or otherwise discharge any judgment or order for the
payment of money in excess of $2,000,000, which is not stayed on appeal or
otherwise being appropriately contested in good faith.

     11.12  ERISA. The Unfunded Liabilities of all Single Employer Plans shall
exceed in the aggregate $10,000,000; or any Reportable Event shall occur in
connection with any Plan; or the Borrower or any other member of the Controlled
Group shall have been notified by the sponsor of a Multiemployer Plan that it
has incurred withdrawal liability to such Multiemployer Plan in an amount which,
when aggregated with all Unfunded Liabilities of all Single Employer Plans and
all other amounts required to be paid to Multiemployer Plans by the Borrower or
any other member of the Controlled Group as withdrawal liability, exceeds
$10,000,000.

     11.13  VIOLATION OF LAW. Any court, governmental or governmental agency
shall find or hold, or formally notify the Borrower or any Subsidiary, that the
Borrower or any Subsidiary (i) has violated any Environmental Law, or (ii) bears
responsibility for any removal or remedial or similar action in connection with
the release of the Borrower or any other person of any Hazardous Materials into
the environment, or is otherwise liable in any manner in connection with any
such release; and such finding, holding or notification could reasonably be
expected (taking into account the expected outcome of any legal appeals
available to the Borrower or such Subsidiary, as well as the likelihood and
extent of contribution from any other persons who may be jointly and severally
liable with the Borrower or such Subsidiary) to have a Material Adverse Effect
on the ability of the Borrower to perform its obligations under the Loan
Documents.

                                       29
<Page>

12.  REMEDIES.

     Upon the occurrence of an Event of Default, the Bank shall have all rights,
powers and remedies set forth in the Loan Documents, in any written agreement or
instrument (other than this Agreement or the Loan Documents) relating to any of
the Obligations, or as otherwise provided at law or in equity. Without limiting
the generality of the foregoing, the Bank may, at its option upon the occurrence
of an Event of Default, declare its commitments to the Borrower to be terminated
and all Obligations to be immediately due and payable, provided, however, that
upon the occurrence of an Event of Default under Section 11.9, "Assignment for
Creditors", or Section 11.7, "Bankruptcy", all commitments of the Bank to the
Borrower shall be immediately terminated and all Obligations shall be
automatically due and payable, all without demand, notice or further action of
any kind required on the part of the Bank. The Borrower hereby waives any and
all presentment, demand, notice of dishonor, protest, and all other notices and
demands in connection with the enforcement of Bank's rights under the Loan
Documents, notwithstanding anything contained herein or in the Loan Documents to
the contrary. In addition to the foregoing:

     12.1   OFFSET RIGHTS. In addition to, and without limitation of, any rights
of the Bank under applicable law, so long as any Event of Default has occurred
and is continuing, any indebtedness from the Bank to Borrower (including account
balances, whether provisional or final and whether or not collected or
available, hereinafter called "Accounts") may be offset and applied toward the
payment of the Obligations then due and owing to the Bank.

     12.2   ADDITIONAL REMEDIES. The Bank shall have the right and power to:

            (a)  extend, renew or modify for one or more periods (whether or not
     longer than the original period) the Note, any other of the Obligations,
     any obligation of any nature of any other obligor with respect to the Note
     or any of the Obligations;

            (b)  grant releases, compromises or indulgences with respect to the
     Note, any of the Obligations, any extension or renewal of any of the
     Obligations, any security therefor, or to any other obligor with respect to
     the Note or any of the Obligations;

            (c)  transfer the whole or any part of securities which may
     constitute Accounts into the name of the Bank or the Bank's nominee, and
     any corporation, association, or any of the managers or trustees of any
     trust issuing any of said securities, or any transfer agent, shall not be
     bound to inquire, in the event that the Bank or said nominee makes any
     further transfer of said securities, or any portion thereof, as to whether
     the Bank or such nominee has the right to make such further transfer, and
     shall not be liable for transferring the same;

            (d)  make an election with respect to the Accounts or any other from
     time to time collateral for any of the Obligations under Section 1111 of
     the Code or take action under Section 364 or any other section of the Code;
     provided, however, that any such

                                       30
<Page>

     action of the Bank as set forth herein shall not, in any manner whatsoever,
     impair or affect the liability of the Borrower hereunder, nor prejudice,
     waive, nor be construed to impair, affect, prejudice or waive the Bank's
     rights and remedies at law, in equity or by statute, nor release,
     discharge, nor be construed to release or discharge, the Borrower, any
     guarantor or other person, firm, corporation or other entity liable to the
     Bank for the Obligations; and

            (e)  at any time, and from time to time, accept additions to,
     releases, reductions, exchanges or substitution of the Accounts s, without
     in any way altering, impairing, diminishing or affecting the provisions of
     this Agreement, the Loan Documents, or any of the other Obligations, or the
     Bank's rights hereunder, under the Note or under any of the other
     Obligations.

The Borrower hereby ratifies and confirms whatever the Bank may do with respect
to the Accounts, and agrees that the Bank shall not be liable for any error of
judgment or mistakes of fact or law with respect to actions taken in connection
with the Accounts absent manifest error.

     12.3   INTENTIONALLY OMITTED.

     12.4   APPLICATION OF PROCEEDS. The Bank will within 3 Business Days after
receipt of cash or solvent credits from collection of items of payment, proceeds
of Accounts or any other source, apply the whole or any part thereof against the
Obligations secured hereby. The Bank shall further have the exclusive right to
determine how, when and what application of such payments and such credits shall
be made on the Obligations, and such determination shall be conclusive upon the
Borrower. Any proceeds of any disposition by the Bank of all or any part of the
Accounts may be first applied by the Bank to the payment of expenses incurred by
the Bank in connection with the Accounts, including attorneys' fees and legal
expenses as provided for in Section 13 hereof.

     12.5   NO WAIVER. No Event of Default shall be waived by the Bank except in
writing. No failure or delay on the part of the Bank in exercising any right,
power or remedy hereunder shall operate as a waiver of the exercise of the same
or any other right at any other time; nor shall any single or partial exercise
of any such right, power or remedy preclude any other or further exercise
thereof or the exercise of any other right, power or remedy hereunder. There
shall be no obligation on the part of the Bank to exercise any remedy available
to the Bank in any order. The remedies provided for herein are cumulative and
not exclusive of any remedies provided at law or in equity. The Borrower agrees
that in the event that the Borrower fails to perform, observe or discharge any
of its Obligations or liabilities under this Agreement or any other agreements
with the Bank, no remedy of law will provide adequate relief to the Bank, and
further agrees that the Bank shall be entitled to temporary and permanent
injunctive relief in any such case without the necessity of proving actual
damages.

13   MISCELLANEOUS.

                                       31
<Page>

     13.1   OBLIGATIONS ABSOLUTE. None of the following shall affect the
Obligations of the Borrower to the Bank under this Agreement or the Bank's
rights with respect to any from time to time collateral for the Obligations:

            (a)  acceptance or retention by the Bank of other property or any
     interest in property as security for the Obligations;

            (b)  release by the Bank of any guarantors of the Obligations or of
     all or any part of any from time to time collateral for the Obligations or
     of any party liable with respect to the Obligations;

            (c)  release, extension, renewal, modification or substitution by
     the Bank of the Note, or any note evidencing any of the Obligations, or the
     compromise of the liability of any guarantor of the Obligations; or

            (d)  failure of the Bank to resort to any other security or to
     pursue the Borrower or any other obligor liable for any of the Obligations
     before resorting to remedies against any from time to time collateral for
     the Obligations.

     13.2   ENTIRE AGREEMENT. This Agreement (i) is valid, binding and
enforceable against the Borrower and the Bank in accordance with its provisions
and no conditions exist as to its legal effectiveness; (ii) constitutes the
entire agreement between the parties; and (iii) is the final expression of the
intentions of the Borrower and the Bank. No promises, either expressed or
implied, exist between the Borrower and the Bank, unless contained herein. This
Agreement supersedes all negotiations, representations, warranties, commitments,
offers, contracts (of any kind or nature, whether oral or written) prior to or
contemporaneous with the execution hereof.

     13.3   AMENDMENTS; WAIVERS. No amendment, modification, termination,
discharge or waiver of any provision of this Agreement or of the Loan Documents,
or consent to any departure by the Borrower therefrom, shall in any event be
effective unless the same shall be in writing and signed by the Bank, and then
such waiver or consent shall be effective only for the specific purpose for
which given.

     13.4   WAIVER OF JURY TRIAL. THE BANK AND THE BORROWER, AFTER CONSULTING OR
HAVING HAD THE OPPORTUNITY TO CONSULT WITH COUNSEL, EACH KNOWINGLY, VOLUNTARILY
AND INTENTIONALLY WAIVE IRREVOCABLY, THE RIGHT TO TRIAL BY JURY WITH RESPECT TO
ANY LEGAL PROCEEDING BASED HEREON, OR ARISING OUT OF, UNDER OR IN CONNECTION
WITH THIS AGREEMENT, THE NOTE OR ANY OF THE OTHER OBLIGATIONS, ANY FROM TIME TO
TIME COLLATERAL FOR THE OBLIGATIONS, OR ANY OTHER AGREEMENT EXECUTED OR
CONTEMPLATED TO BE EXECUTED IN CONJUNCTION WITH THIS AGREEMENT, OR ANY COURSE OF
CONDUCT OR COURSE OF DEALING IN WHICH THE BANK AND THE BORROWER ARE ADVERSE
PARTIES. THIS PROVISION IS A MATERIAL INDUCEMENT FOR THE BANK GRANTING ANY
FINANCIAL ACCOMMODATION TO THE BORROWER.

                                       32
<Page>

     13.5   LITIGATION. TO INDUCE THE BANK TO MAKE THE LOANS, THE BORROWER AND
THE BANK IRREVOCABLY AGREES THAT ALL ACTIONS ARISING, DIRECTLY OR INDIRECTLY, AS
A RESULT OR CONSEQUENCE OF THIS AGREEMENT, OR THE NOTE, SHALL BE INSTITUTED AND
LITIGATED ONLY IN COURTS HAVING THEIR SITUS IN THE CITY OF CHICAGO, ILLINOIS.
THE BORROWER AND THE BANK HEREBY CONSENTS TO THE EXCLUSIVE JURISDICTION AND
VENUE OF ANY STATE OR FEDERAL COURT HAVING ITS SITUS IN SAID CITY, AND WAIVES
ANY OBJECTION BASED ON FORUM NON CONVENIENS. THE BORROWER AND THE BANK HEREBY
WAIVES PERSONAL SERVICE OF ANY AND ALL PROCESS AND CONSENTS THAT ALL SUCH
SERVICE OF PROCESS MAY BE MADE BY CERTIFIED MAIL, RETURN RECEIPT REQUESTED,
DIRECTED TO THE BORROWER OR THE BANK AS SET FORTH HEREIN IN THE MANNER PROVIDED
BY APPLICABLE STATUTE, LAW, RULE OF COURT OR OTHERWISE.

     13.6   ASSIGNABILITY. The Bank may at any time assign the Bank's rights in
this Agreement, the Note, the Obligations, or any part thereof. In addition, the
Bank may at any time sell one or more participations in the Loans. The Borrower
may not sell or assign this Agreement, or any portion thereof, either
voluntarily or by operation of law, without the prior written consent of the
Bank. This Agreement shall be binding upon the Bank and the Borrower and their
respective legal representatives and successors. All references herein to the
Borrower shall be deemed to include any successors, whether immediate or remote.

     13.7   CONFIDENTIALITY. The Borrower and the Bank hereby agree and
acknowledge that any and all information relating to the Borrower which is (i)
furnished by the Borrower to the Bank (or to any affiliate of the Bank), and
(ii) non-public, confidential or proprietary in nature, shall be kept
confidential by the Bank or such affiliate in accordance with applicable law,
provided, however, that such information and other credit information relating
to the Borrower may be distributed by the Bank or such affiliate to the Bank's
or such affiliate's directors, officers, employees, attorneys, affiliates,
auditors and regulators, who have a need to know, and upon the order of a court
or other governmental agency having jurisdiction over the Bank or such
affiliate, to any other party. The Borrower and the Bank further agree that this
provision shall survive the termination of this Agreement.

     13.8   BINDING EFFECT. This Agreement shall become effective upon execution
by the Borrower and the Bank. If this Agreement is not dated or contains any
blanks when executed by the Borrower, the Bank is hereby authorized, without
notice to the Borrower, to date this Agreement as of the date when it was
executed by the Borrower, and to complete any such blanks according to the terms
upon which this Agreement is executed.

     13.9   GOVERNING LAW. This Agreement, the Loan Documents and the Note shall
be delivered and accepted in and shall be deemed to be contracts made under and
governed by the internal laws of the State of Illinois (but giving effect to
federal laws applicable to national banks), and for all purposes shall be
construed in accordance with the laws of such State, without giving effect to
the choice of law provisions of such State.

                                       33
<Page>

     13.10  ENFORCEABILITY. Wherever possible, each provision of this Agreement
shall be interpreted in such manner as to be effective and valid under
applicable law, but if any provision of this Agreement shall be prohibited by,
unenforceable or invalid under any jurisdiction, such provision shall as to such
jurisdiction, be severable and be ineffective to the extent of such prohibition
or invalidity, without invalidating the remaining provisions of this Agreement
or affecting the validity or enforceability of such provision in any other
jurisdiction.

     13.11  SURVIVAL OF BORROWER REPRESENTATIONS. All covenants, agreements,
representations and warranties made by the Borrower herein shall,
notwithstanding any investigation by the Bank, be deemed material and relied
upon by the Bank and shall survive the making and execution of this Agreement
and the Loan Documents and the issuance of the Note, and shall be deemed to be
continuing representations and warranties until such time as the Borrower has
fulfilled all of its Obligations to the Bank, and the Bank has been paid in
full. The Bank, in extending financial accommodations to the Borrower, is
expressly acting and relying on the aforesaid representations and warranties.

     13.12  EXTENSIONS OF BANK'S COMMITMENT AND NOTE. This Agreement shall
secure and govern the terms of any extensions or renewals of the Bank's
commitment hereunder and the Note pursuant to the execution of any modification,
extension or renewal note executed by the Borrower and accepted by the Bank in
its sole and absolute discretion in substitution for the Note.

     13.13  TIME OF ESSENCE. Time is of the essence in making payments of all
amounts due the Bank under this Agreement and in the performance and observance
by the Borrower of each covenant, agreement, provision and term of this
Agreement.

     13.14  COUNTERPARTS. This Agreement may be executed in any number of
counterparts and by different parties hereto in separate counterparts, each of
which when so executed and delivered shall be deemed to be an original and all
of which taken together shall constitute one and the same instrument.

     13.15  FACSIMILE SIGNATURES. The Bank is hereby authorized to rely upon and
accept as an original any Loan Documents or other communication which is sent to
the Bank by facsimile, telegraphic or other electronic transmission (each, a
"Communication") which the Bank in good faith believes has been signed by
Borrower and has been delivered to the Bank by a properly authorized
representative of the Borrower, whether or not that is in fact the case.
Notwithstanding the foregoing, the Bank shall not be obligated to accept any
such Communication as an original and may in any instance require that an
original document be submitted to the Bank in lieu of, or in addition to, any
such Communication.

     13.16  NOTICES. Except as otherwise provided herein, the Borrower waives
all notices and demands in connection with the enforcement of the Bank's rights
hereunder. All notices, requests, demands and other communications provided for
hereunder shall be in writing, sent by certified or registered mail, postage
prepaid, by facsimile, telegram or delivered in person, and addressed as
follows:

                                       34
<Page>

            If to the Borrower:       AAR CORP.
                                      1100 Wood Dale Road
                                      Wood Dale, Illinois 60191
                                      Attention:  Timothy J. Romenesko
                                                  Vice President and
                                                  Chief Financial Officer

            If to the Bank:           Firstar Bank National Association
                                      777 East Wisconsin Avenue
                                      MK-FC-GLCB
                                      Milwaukee, Wisconsin 53202
                                      Attention: Dennis Krakau

or, as to each party, at such other address as shall be designated by such party
in a written notice to each other party complying as to delivery with the terms
of this subsection. No notice to or demand on the Borrower in any case shall
entitle the Borrower to any other or further notice or demand in similar or
other circumstances.

     13.17  EXPENSES; INDEMNIFICATION. The Borrower shall reimburse the Bank for
any and all reasonable costs and out-of-pocket expenses (including attorneys'
fees and time charges of attorneys for the Bank, which attorneys may be
employees of the Bank) paid or incurred by the Bank in connection with the
preparation, negotiation, execution ,delivery, review, amendment, modification,
and administration of the Loan Documents. The Borrower also agrees to reimburse
the Bank for any and all reasonable costs and out-of-pocket expenses (including
attorneys' fees and time charges of attorneys for the Bank, which attorneys may
be employees of the Bank) paid or incurred by the Bank in connection with the
collection and enforcement of the Loan Documents. The Borrower further agrees to
indemnify the Bank, its directors, officers and employees against all losses,
claims, damages, penalties, judgments, liabilities and expenses (including,
without limitation, all expenses of litigation or preparation therefor whether
or not the Bank is a party thereto) which any of them may pay or incur arising
out of any term or condition contained in this Agreement or the other Loan
Documents, or the direct or indirect application or proposed application of the
proceeds of any Advance hereunder, except to the extent any of the foregoing
arising solely from the gross negligence or willful misconduct of the party
requesting indemnification. The obligations of the Borrower under this Section
shall survive the termination of this Agreement.

                                       35
<Page>

     IN WITNESS WHEREOF, the Borrower and the Bank have executed this Revolving
Loan Agreement as of the date first above written.

                                               AAR CORP.

                                               By:    /s/ Timothy J. Romenesko
                                                      --------------------------
                                               Name:  Timothy J. Romenesko
                                               Title: Vice President

                                               Agreed and accepted:

                                               Firstar Bank National Association

                                               By:    /s/ Matt Schulz
                                                      --------------------------
                                               Name:  Matt Schulz
                                               Title: Assistant Vice President

                                       36
<Page>

                                   EXHIBIT "A"

                                 REVOLVING NOTE

                                                            No._________________
$10,000,000.00                                            Date:  October 3, 2001
Chicago, Illinois                                     Due Date:  October 2, 2002

     FOR VALUE RECEIVED, AAR CORP., a Delaware corporation (the "Borrower"),
whose address is 1100 North Wood Dale Road, Wood Dale, Illinois 60191, promises
to pay to the order of Firstar Bank National Association (hereinafter, together
with any holder hereof, called the "Bank"), at its office at 777 East Wisconsin
Avenue, MK-FC-GLCB, Milwaukee, Wisconsin 53202, on or before October 2, 2002
(the "Maturity Date"), the lesser of (i) the principal sum of TEN MILLION and
00/100 DOLLARS ($10,000,000.00), or (ii) the aggregate principal amount of all
Loans outstanding under and pursuant to that certain Revolving Loan Agreement
dated as of October 3, 2001 between the Borrower and the Bank, as amended from
time to time (as amended, supplemented or modified from time to time, the "Loan
Agreement"), and made available by the Bank to the Borrower at the maturity or
maturities and in the amount or amounts stated on the records of the Bank,
together with interest (computed on the actual number of days elapsed on the
basis of a 360 day year) as herein after provided on the aggregate principal
amount of all Revolving Loans outstanding from time to time hereunder from the
date hereof through and including the Maturity Date. Capitalized words and
phrases not otherwise defined herein shall have the meanings assigned thereto in
the Loan Agreement.

     The unpaid principal amount hereof shall bear interest as provided for in
the Loan Agreement. Interest after maturity (whether by reason of acceleration
or otherwise) on the unpaid principal balance of this Revolving Note (the
"Note") and all accrued and unpaid interest hereon, shall accrue at a floating
per annum rate of interest equal to the Default Rate and shall be payable on
demand from the Bank.

     All Loans shall be repaid by the Borrower on the Maturity Date, unless
payable sooner pursuant to the provisions of the Loan Agreement. In the event
the aggregate outstanding principal balance of all Loans exceeds the Revolving
Loan Commitment, the Borrower shall, without notice or demand of any kind,
immediately make such repayments of the Revolving Loans or take such other
actions as shall be necessary to eliminate such excess.

     Principal and interest shall be paid to the Bank at its address set forth
above, or at such other place as the holder of this Note shall designate in
writing to the Borrower.

     This Note evidences the Revolving Loans and other indebtedness incurred by
the Borrower under and pursuant to the Loan Agreement, to which reference is
hereby made for a statement of the terms and conditions under which the Maturity
Date or any payment hereon may be accelerated. The holder of this Note is
entitled to all of the benefits and security provided for in the Loan Agreement.

                                       37
<Page>

     Except for such notices as may be required under the terms of the Loan
Agreement, the Borrower waives presentment, demand, notice, protest, and all
other demands, or notices, in connection with the delivery, acceptance,
performance, default, or enforcement of this Note, and assents to any extension
or postponement of the time of payment or any other indulgence.

     THE BANK AND THE BORROWER EACH KNOWINGLY, VOLUNTARILY AND INTENTIONALLY
WAIVE IRREVOCABLY, THE RIGHT TO TRIAL BY JURY WITH RESPECT TO ANY LEGAL
PROCEEDING BASED HEREON, OR ARISING OUT OF, UNDER OR IN CONNECTION WITH THE LOAN
AGREEMENT, THIS NOTE OR ANY OF THE OBLIGATIONS, THE COLLATERAL, OR ANY OTHER
AGREEMENT EXECUTED OR CONTEMPLATED TO BE EXECUTED IN CONJUNCTION WITH THE LOAN
AGREEMENT, OR ANY COURSE OF CONDUCT OR COURSE OF DEALING IN WHICH THE BANK AND
THE BORROWER ARE ADVERSE PARTIES. THIS PROVISION IS A MATERIAL INDUCEMENT FOR
THE BANK GRANTING ANY FINANCIAL ACCOMMODATION TO THE BORROWER.

     TO INDUCE THE BANK TO MAKE THE LOANS, THE BORROWER AND THE BANK IRREVOCABLY
AGREES THAT ALL ACTIONS ARISING, DIRECTLY OR INDIRECTLY, AS A RESULT OR
CONSEQUENCE OF THE LOAN AGREEMENT, OR THIS NOTE, SHALL BE INSTITUTED AND
LITIGATED ONLY IN COURTS HAVING SITUS IN THE CITY OF CHICAGO, ILLINOIS. THE
BORROWER AND THE BANK HEREBY CONSENTS TO THE EXCLUSIVE JURISDICTION AND VENUE OF
ANY STATE OR FEDERAL COURT HAVING ITS SITUS IN SAID CITY AND WAIVES ANY
OBJECTION BASED ON FORUM NON CONVENIENS. THE BORROWER AND THE BANK HEREBY WAIVE
PERSONAL SERVICE OF ANY AND ALL PROCESS AND CONSENTS THAT ALL SUCH SERVICE OF
PROCESS MAY BE MADE BY CERTIFIED MAIL, RETURN RECEIPT REQUESTED, DIRECTED TO THE
BORROWER OR THE BANK IN THE MANNER PROVIDED BY APPLICABLE STATUTE, LAW, RULE OF
COURT OR OTHERWISE.

     The Revolving Loans evidenced hereby have been made and/or issued and this
Note has been delivered at the Bank's main office. This Note shall be governed
and construed in accordance with the laws of the State of Illinois, in which
state it shall be performed, and shall be binding upon the Borrower, and its
legal representatives, successors, and assigns. Wherever possible, each
provision of the Loan Agreement and this Note shall be interpreted in such
manner as to be effective and valid under applicable law, but if any provision
of the Loan Agreement or this Note shall be prohibited by or be invalid under
such law, such provision shall be severable, and be ineffective to the extent of
such prohibition or invalidity, without invalidating the remaining provisions of
the Loan Agreement or this Note.

     As used herein, all provisions shall include the masculine, feminine,
neuter, singular and plural thereof, wherever the context and facts require such
construction and in particular the word "Borrower" shall be so construed.

                                       38
<Page>

     IN WITNESS WHEREOF, the Borrower has executed this Revolving Note as of the
date set forth above.

                                          AAR CORP.

                                          By:
                                                --------------------------------
                                          Its:  Vice President
                                          Attention:  Timothy J. Romenesko
                                                      1100 North Wood Dale Road
                                                      Wood Dale, Illinois 60191

                                       39
<Page>

                                   EXHIBIT "B"

                                BORROWING NOTICE

                                                          ________________, 2001

To:  Firstar Bank National Association

Re:  Borrowing Notice

Ladies and Gentlemen:

     We make reference to that certain Revolving Loan Agreement dated as of
October 3, 2001, between AAR CORP. and Firstar Bank National Association, as it
may from time to time be amended, modified, renewed or extended (the "Loan
Agreement"). All capitalized terms used herein shall have the meanings
attributed to them in the Loan Agreement.

     The Borrower hereby gives irrevocable notice pursuant to Section 5 of the
Loan Agreement for the following Advance(s):

Borrowing Date:   _______________, 2001(1)

<Table>
<Caption>
Principal Amount(2)           Type of Advance(3)          Interest Period(4)
----------------              ---------------             ---------------
<S>                           <C>                         <C>

</Table>

                                          Sincerely yours,

                                          AAR CORP.

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

----------
(1)  Borrowing Date must be a Business Day prior to or on the Maturity Date.
(2)  Subject to the minimum amount requirements set forth in Section 5.
(3)  Specify Prime or LIBOR.
(4)  Applicable to LIBOR only. See definition of Interest Period and Section 5
     (Restrictions on Interest Periods).

                                       40
<Page>

                               FIRST AMENDMENT TO
                          THE REVOLVING LOAN AGREEMENT

          THIS FIRST AMENDMENT TO THE REVOLVING LOAN AGREEMENT DATED
          AS OF OCTOBER 3, 2001 (THE "CREDIT AGREEMENT") is made as of
          the 30th day of November, 2001, between AAR Corp. ("AAR"),
          and U.S. Bank National Association doing business as Firstar
          Bank National Association (the "Bank").

WHEREAS, AAR and the Bank entered into the Credit Agreement dated October 3,
2001.

WHEREAS, AAR, and the Bank desire to amend the Credit Agreement as set forth
herein.

NOW, THEREFORE, in consideration of the mutual promises contained herein, the
parties agree that effective as of the date hereof, the Credit Agreement is
amended as follows:

1.   Section 10.2, Consolidated Tangible Net Worth shall be amended and read as
     follows:

          10.2 CONSOLIDATED TANGIBLE NET WORTH. The Borrower will
          maintain at all times Consolidated Tangible Net Worth in an
          amount not less than the sum of (a) $240,000,000 plus (b)
          the net cash proceeds received by the Borrower from the sale
          of any of its capital stock on or after May 31, 2000 plus
          (c) an amount equal to the aggregate of one-third of
          Consolidated Net Income earned during each of its fiscal
          years beginning with its fiscal year commencing June 1,
          2000, said fiscal years to be taken as one accounting period
          minus (d) amounts (not to exceed $30,000,000 in the
          aggregate for the purposes of this covenant) either used for
          the purchase or retirement of the Borrower's capital stock
          or representing the after tax write-down of assets and
          associated costs on or after May 31, 2000."

2.   The definition of "Interest Rate" shall be amended and read as follows:

          INTEREST RATE  shall mean the Borrower's option of,
          (i)    LIBOR for the relevant Interest Period (rounded upward if
                 necessary, to the nearest 1/16 of 1.00%) plus 1.00% at all
                 times. The LIBOR Rate shall be fixed for each Interest Period;
                 or
          (ii)   the Prime Rate plus zero % at all times when the Borrower has
                 an Investment Grade Rating and 0.50% at all times when the
                 Borrower does not have an Investment Grade Rating.
                 Provided, however, that in no event shall the Interest Rate be
                 less than the highest rate charged at any time by the
                 Borrower's Unsecured Lenders.

                                        1
<Page>

3.   Except as specifically amended hereby, the Credit Agreement is and shall
     remain in full force and effect.

IN WITNESS WHEREOF, the parties have executed and delivered this amendment to
the Credit Agreement as of the date first written above.

AAR CORP.

By: /s/ Timothy J. Romenesko
       ------------------------
Name:   Timothy J. Romenesko
Title: Vice President

U.S. BANK NATIONAL ASSOCIATION

By: /s/ Patrick Pfersch
       ------------------------
Name:   Patrick Pfersch
Title: Assistant Vice President

                                        2

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