Document:

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                                                                  Exhibit 10.55

                                   AMENDMENT
                                       TO
                              EMPLOYMENT AGREEMENT

         This Amendment to Employment Agreement (the "Amendment") is entered
into as of December 27, 1999, between Kellstrom Industries, Inc., a Delaware
corporation (the "Company"), and Fred von Husen, an individual (the "Employee").

                                    RECITALS

         The Company and the Employee are parties to that certain Employment
Agreement entered into as of October 25, 1996 (the "Employment Agreement"),
pursuant to which the Employee is employed as an Executive Vice President of the
Company. The Company and the Employee desire to amend the Employment Agreement
on the terms and conditions set forth in this Amendment.

                               TERMS OF AGREEMENT

         In consideration of the above recitals and the mutual promises herein
contained, the Company and the Employee hereby agree as follows:

         1. Effective as of January 1, 2000, Section 3(b)(ii) of the Employment
Agreement is amended in its entirety by deleting such section and substituting
the following:

                  "(ii) ANNUAL COMPANY BONUS. For each calendar year commencing
         with the year ending December 31, 2000, at the end of which year the
         Employee is employed by the Company:

                           (A) If the Net Income (as hereinafter defined) of the
         Company for such year is an amount equal to the Company's target net
         income as determined in the sole discretion of the Board (or the
         Executive Committee) for such year (the "Target"), the Employee shall
         be entitled to a bonus in an amount of $90,000. For purposes of this
         Agreement, "Net Income" shall mean actual net income, as determined by
         the Company in its sole discretion in accordance with GAAP.

                           (B) If the Net Income of the Company for such year is
         more than the Target and less than 125% of the Target, the Employee
         shall be entitled to a bonus as calculated below:

                  B    =    $90,000 + [$90,000 x 2 x (NI - T)]
                                                 ------------
                                                      T

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                  where:

                  B = the bonus earned in such year.

                  T = the Target for such year.

                  NI = the Net Income of the Company for such year.

                           (C) If the Net Income of the Company for such year is
         equal to or greater than 125% of the Target, the Employee shall be
         entitled to a bonus in the amount of $135,000.

                           (D) If the Net Income of the Company for such year is
         greater than 75% of the Target but less than the Target, the Employee
         shall be entitled to a bonus as calculated below:

                  B    =    $90,000 - [$90,000 x 4 x (T - NI)]
                                                 ------------
                                                       T
                  where:

                  B = the bonus earned in such year.

                  T = the Target for such year.

                  NI = the Net Income of the Company for such year.

                           (E) If the Net Income of the Company for such year is
         equal to or less than 75% of the Target, the Employee shall not be
         entitled to a bonus."

         2. Except as expressly amended hereby, all of the terms and conditions
of the Employment Agreement shall continue in full force and effect.

         3. This Amendment shall be governed by and construed in accordance with
the laws of the State of Florida. This Amendment may be executed in any number
of counterparts, each of which shall be an original but all of which taken
together shall constitute one and the same instrument.

                         [SIGNATURES ON FOLLOWING PAGE]

                                       2
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         IN WITNESS WHEREOF, the parties have caused this Amendment to be duly
executed and delivered as of the day and year first above written.

                                    KELLSTROM INDUSTRIES, INC.

                                    By: /s/ W. Penny
                                        ----------------------------------------
                                        Name:  W. Penny
                                        Title: VP HR

                                    EMPLOYEE

                                    /s/ Fred von Husen
                                    --------------------------------------------
                                    Fred von Husen

                                       3<PAGE>   1
                                                                   Exhibit 10.56

                                JOINDER AGREEMENT
                  (CERTIFIED AIRCRAFT PARTS, INC. ACQUISITION)

         THIS JOINDER AGREEMENT (the "AGREEMENT"), dated as of May 13, 1999, is
by and between CERTIFIED AIRCRAFT PARTS, INC., a Florida corporation (the
"APPLICANT BORROWER"), KELLSTROM INDUSTRIES, INC., a Delaware corporation, as
agent for the Borrowers ("KELLSTROM") , the financial institutions party from
time to time to the below-referenced Loan Agreement, and NATIONSBANK, N.A., as
agent for the Lenders (the "AGENT"), under that certain Amended and Restated
Loan and Security Agreement (as amended and modified, the "LOAN AGREEMENT"),
dated as of December 14, 1998, by and among Kellstrom and certain related
borrowing entities (the "Borrowers"), the Lenders and the Agent. All of the
defined terms in the Loan Agreement are incorporated herein by reference.

         The Applicant Borrower has indicated its desire to become a Borrower
pursuant to the terms of the Loan Agreement.

         Accordingly, the Applicant Borrower hereby agrees as follows with the
Agent and the Lenders:

         1. The Applicant Borrower hereby acknowledges, agrees and confirms
that, by its execution of this Agreement, the Applicant Borrower will be deemed
to be a party to the Loan Agreement and a "Borrower" for all purposes of the
Loan Agreement and the other Loan Documents and a co-maker of each of the Notes,
and shall have all of the obligations of a Borrower thereunder as if it had
executed the Loan Agreement and the other Loan Documents. The Applicant Borrower
hereby ratifies, as of the date hereof, and agrees to be bound by, all of the
terms, provisions and conditions contained in the Loan Agreement and in the Loan
Documents which are binding upon the Borrowers, including, without limitation
(a) all of the representations and warranties of the Borrowers set forth in
Article 6 of the Loan Agreement, as supplemented from time to time in accordance
with the terms thereof, and (b) all of the covenants set forth in Articles 7, 8,
9, 10 and 11 of the Loan Agreement.

         2. Without limiting the generality of the foregoing terms of paragraph
1, the Applicant Borrower hereby grants to the Agent for the benefit of the
Secured Parties a continuing security interest in, and a right of set off
against, any and all right, title and interest of the Applicant Borrower in and
to the Collateral (as such term is defined in Section 1.1 of the Loan Agreement)
of the Applicant Borrower.

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        3. The Applicant Borrower acknowledges and confirms that it has
received a copy of the Loan Agreement and the Schedules and Exhibits thereto.
The Schedules to the Loan Agreement are amended to include the information shown
on the attached SCHEDULE A.

         4. Kellstrom confirms that all of the other Borrowers' obligations
under the Loan Agreement are, and upon the Applicant Borrower becoming a
Borrower shall continue to be, in full force and effect. Kellstrom further
confirms that immediately upon the Applicant Borrower becoming a Borrower the
term "Secured Obligations", as used in the Loan Agreement, shall include all
Secured Obligations of such Applicant Borrower under the Loan Agreement and
under each other Loan Document.

         5. Each of Kellstrom and the Applicant Borrower agrees that at any time
and from time to time, upon the written request of the Agent, it will execute
and deliver such further documents and do such further acts and things as the
Agent may reasonably request in order to effect the purposes of this Agreement.

         6. This Agreement may be executed in two or more counterparts, each of
which shall constitute an original but all of which when taken together shall
constitute one contract.

         7. This Agreement shall be governed by and construed and interpreted in
accordance with the laws of the State of Georgia.

         IN WITNESS WHEREOF, each of Kellstrom and the Applicant Borrower has
caused this Agreement to be duly executed by its authorized officers, and the
Agent has caused the same to be accepted by its authorized officer, as of the
day and year first above written.

                                       CERTIFIED AIRCRAFT PARTS, INC.

                                       By: /s/ Michael Arciola
                                           -------------------------------------
                                       Name:    Michael Arciola
                                       Title:   Assistant Secretary

                                       KELLSTROM INDUSTRIES, INC., for itself
                                       and for the other Borrowers

                                       By: /s/ Michael Arciola
                                           -------------------------------------
                                       Name:    Michael Arciola
                                       Title:   Assistant Secretary

                       (Signatures Continued on Next Page)

                                      -2-

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                                         NATIONSBANK, N.A., as Agent for itself
                                         and for the other Lenders

                                         By: /s/ Robert Walker
                                           -------------------------------------
                                         Name:    Robert Walker
                                         Title:   Vice President

                                      -3-
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                                   SCHEDULE A

<PAGE>   5

                          NOTARY JURAT FOR EXECUTION OF
                        WRITTEN OBLIGATIONS TO PAY MONEY
                              BY FLORIDA BORROWERS

         On this the ____ day of _____________, 199_, before me, the
undersigned, a Notary Public in and for the State of _______________, County of
_____________, _________________ personally appeared, personally known to me or
proved to me on the basis of satisfactory evidence to be the _________________
of Certified Aircraft Parts, Inc., a Florida corporation, who, being by me first
duly sworn, stated that:

1.       He executed the foregoing Joinder Agreement on behalf of Certified
         Aircraft Parts, Inc. pursuant to its by-laws or a resolution of its
         board of directors, said execution taking place in the State of
         _______________, County of _____________; and

2.       He has this day delivered the foregoing instrument to NationsBank,
         N.A., as agent for the Lenders, at Fulton County, Georgia.

                                         Signature of Borrower's Officer:

                                         By:
                                             -----------------------------------
                                         Name:
                                              ----------------------------------

Sworn to and subscribed before me this
___ day of _____________, 199_:

----------------------------------
         Notary Signature

My Commission Expires:

---------------------------------
     [Affix Notarial Seal]

<PAGE>   6

                          NOTARY JURAT FOR EXECUTION OF
                        WRITTEN OBLIGATIONS TO PAY MONEY
                              BY FLORIDA BORROWERS

         On this the ____ day of ____________, 199_, before me, the undersigned,
a Notary Public in and for the State of _______________, County of
_____________, Michael W. Wallace, personally known to me or proved to me on the
basis of satisfactory evidence to be the Chief Financial Officer of Kellstrom
Industries, Inc., a Delaware corporation, who, being by me first duly sworn,
stated that:

1.       He executed the foregoing Joinder Agreement on behalf of Kellstrom
         Industries, Inc., as agent for the Borrowers, pursuant to its by-laws
         or a resolution of its board of directors, said execution taking place
         in the State of _______________, County of _____________; and

2.       He has this day delivered the foregoing instrument to NationsBank,
         N.A., as agent for the Lenders, at Fulton County, Georgia.

                                         Signature of Borrower's Officer:

                                         By:
                                             -----------------------------------
                                              Michael W. Wallace

Sworn to and subscribed before me this ___ day of _____________, 199_:

----------------------------------
        Notary Signature

My Commission Expires:

---------------------------------
     [Affix Notarial Seal]

<PAGE>   7

                          AFFIDAVIT REGARDING DELIVERY

         On this the ____ day of ______________, 199_, before me, the
undersigned, a Notary Public in and for the State of Georgia, County of Cobb,
_________________ personally appeared, personally known to me or proved to me on
the basis of satisfactory evidence to be a ______________ of NationsBank, N.A.,
who, being by me first duly sworn, stated that NationsBank, N.A. has received
delivery of the foregoing Joinder Agreement in the State of Georgia, County of
Fulton.

                                      -----------------------------------------
                                      Signature of Officer of NationsBank, N.A.

Sworn to and subscribed before me this ___ day of ________________, 1999:

----------------------------------
        Notary Signature

My Commission Expires:

---------------------------------
     [Affix Notarial Seal]

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