Document:

EXHIBIT 10.21

                          AMENDMENT NO. 1 TO AGREEMENT

         THIS AMENDMENT NO. 1 TO AGREEMENT is made and entered into as of this
4th day of December, 2000 (the "Amendment"), between AVIATION SALES COMPANY, a
Delaware corporation (the "Company"), LJH, CORPORATION, a Texas corporation, of
which Lacy J. Harber is the sole stockholder ("LJH Corp.") and LACY J. HARBER
("Harber"), an individual and resident of the State of Texas (Harber and LJH
Corp., and their respective affiliates and associates, are hereinafter referred
to collectively as the "Harber Group").

         WHEREAS, the Company, LJH Corp., and Harber are parties to the
Agreement dated as of March 10, 2000 (the "Agreement"); and

         WHEREAS, the Board of Directors of the Company (the "Board") has agreed
to amend its Rights Agreement dated as of November 1, 1999 (as amended by
Amendment No. 1 to Rights Agreement, dated as of March 14, 2000) (the "Rights
Agreement") to permit the Harber Group to beneficially own up to, but not more
than, thirty percent (30%) of the issued and outstanding shares of common stock
of the Company, par value $0.001 per share (the "Common Stock"), without
triggering the distribution of rights under the Rights Agreement ("Amendment No.
2 to Rights Agreement"); and

         WHEREAS, the Board has approved the transactions contemplated by
Amendment No. 2 to Rights Agreement and this Amendment upon the terms and
conditions contained therein and herein; and

         WHEREAS, pursuant to Section 6.5 of the Agreement, the Agreement may be
amended with the approval of all parties thereto; and

         WHEREAS, a majority of the Disinterested Directors (as defined in the
Agreement) has approved the waiver and amendment of certain provisions of the
Agreement pursuant to Sections 3.11 and 6.5 of the Agreement;

         NOW, THEREFORE, the Agreement is hereby amended as follows:

         1. Amendment of Section 3.1(b). Section 3.1(b) of the Agreement is
hereby amended and restated in its entirety to read as follows:

         "No member of the Harber Group shall, prior to March 10, 2005, directly
         or indirectly acquire, offer to acquire, agree to acquire, become the
         beneficial owner of or obtain any rights in respect of any Company
         Voting Securities, by purchase or otherwise, or take any action in
         furtherance thereof, if the effect of such acquisition, agreement or
         other action would be (either immediately or upon consummation of any
         such acquisition, agreement or other action, or upon the expiration of
         any period of time provided in any such acquisition, agreement or other
         action) to increase the aggregate beneficial ownership of Company
         Voting Securities by the Harber Group to such number of Company Voting
         Securities that represents or possesses greater than 30.0% of the
         Combined Voting Power of Company Voting Securities; provided,

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         however, that shares of Common Stock beneficially owned by Roy T.
         Rimmer ("Rimmer") solely through the grant of stock options by the
         Company to Rimmer as a Director of the Company shall be excluded from
         such percentage. Notwithstanding the foregoing maximum percentage
         limitation, (A) no member of the Harber Group shall be obligated to
         dispose of any Company Voting Securities beneficially owned in
         violation of such maximum percentage limitation if, and solely to the
         extent that, its beneficial ownership is or will be increased solely as
         a result of a repurchase, redemption or other acquisition of any
         Company Voting Securities by the Company or any of its subsidiaries,
         and (B) the foregoing maximum percentage limitation shall not prohibit
         any purchase of Company Voting Securities by any member of the Harber
         Group directly from the Company (including pursuant to the exercise of
         stock options, rights, subscription rights or standby purchase
         obligations in connection with rights offerings by the Company),
         provided such purchase is approved by a majority of the Disinterested
         Directors.

         2. Binding Effect. This Amendment shall be binding upon, and shall
inure to the benefit of, the parties hereto and their respective successors and
assigns.

         3. Execution in Counterparts. This Amendment may be executed in
counterparts, each of which shall be deemed an original, but all of which shall
constitute one and the same instrument.

         4. Governing Law. This Amendment shall be governed by, and interpreted
in accordance with, the laws of the State of Delaware, without regard to
principles of conflict of laws.

         5. Effectiveness. Except as amended hereby, the Rights Agreement shall
remain in full force and effect and shall be otherwise unaffected hereby.

                            [SIGNATURE PAGE FOLLOWS]

                                       2

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

                                     LACY J. HARBER

                                     By: /s/ Lacy J. Harber
                                         ---------------------------------------
                                     Name: Lacy J. Harber

                                     LJH, CORPORATION

                                     By: /s/ Lacy J. Harber
                                         ---------------------------------------
                                     Name: Lacy J. Harber
                                     Title:   President

                                     AVIATION SALES COMPANY

                                     By: /s/ Dale S. Baker
                                         ---------------------------------------
                                     Name: Dale S. Baker
                                     Title:  Chairman of the Board

                                        3EXHIBIT 4.1

                              CONSULTING AGREEMENT

         This CONSULTING AGREEMENT ("Agreement") is entered into this 1st day of
November, 2000, by and between EREX, INC., a Nevada corporation (the "Company"),
and Steven E. Owlett ("Consultant").

         1.       Engagement of Consultant. The Company hereby engages
                  Consultant to assist the Company in legal services.

         2.       Compensation. As total and complete compensation for his
                  services provided herein, the Company shall issue to
                  Consultant 12,810 shares ("Shares") of the Company's
                  restricted common stock ("Stock"), par value $.001 per share.

         3.       Expenses. Company shall assume and shall be responsible for
                  all expenses incurred by Consultant and shall be responsible
                  for all disbursements made in Consultant's activities. Except
                  as otherwise specifically authorized by the President of the
                  Company in advance, in writing, Consultant shall not incur on
                  behalf of Company, and Company shall not have, any liability
                  for any expenses, costs, and disbursements of Consultant.
                  Consultant shall indemnify and hold Company harmless from and
                  against any and all claims, actions, or liability for any
                  expenses, costs, and disbursements, including attorneys' fees,
                  of Consultant or its agents, servants, contractors, or
                  employees.

         4.       Term of Agreement. This Agreement shall commence on the date
                  first set forth above and shall continue in full force and
                  effect for a period of one (1) year. Either party, at its
                  option, may terminate this Agreement prior to the expiration
                  of such one (1)-year period by providing the other party
                  written notice of intent to terminate not less than thirty
                  (30) days prior to the effective date of termination.
                  Notwithstanding the foregoing, the Company may immediately
                  terminate this Agreement if Consultant materially breaches an
                  obligation hereunder.

         5.       Relationship of the Parties; Consultant's Limitations of
                  Authority. Except as otherwise specifically set forth in this
                  Agreement, Consultant shall have no authority to represent
                  Company as an agent of Company. Consultant shall have no
                  authority to bind Company by any contract, representation,
                  understanding, act, or deed concerning Company. Except as
                  otherwise specifically set forth herein, neither the making of
                  this Agreement nor the performance of any part of the
                  provisions hereof shall be construed to constitute Consultant
                  as an employee, agent or representative of Company for any
                  purpose, nor shall this Agreement be deemed to establish a
                  joint venture or partnership. Consultant, in all respects,
                  shall be deemed an independent contractor with respect to the
                  performance by Consultant of its obligations hereunder.

         6.       Assignment. Neither this Agreement nor any of the duties or
                  obligations of Consultant herein may be voluntarily,
                  involuntarily, directly, or indirectly assigned, delegated, or
                  otherwise transferred or encumbered by Consultant without the
                  prior, written approval of the Company. Any such assignment,
                  delegation, transfer, or encumbrance without such approval
                  will be void and will constitute a "material breach" of this
                  Agreement entitling the Company to terminate this Agreement
                  immediately. A change in voting control of Consultant shall be
                  deemed an assignment of this Agreement. This Agreement is
                  fully assignable by the Company and shall inure to the benefit
                  of any assignee or other successor.

         7.       Miscellaneous Provisions.

                  7.1 Entire Agreement; Binding Effect. This Agreement
                  constitutes the entire agreement between the parties with
                  respect to the subject matter of this Agreement and supersedes

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                  any prior agreements or understandings between the parties.
                  This Agreement shall be binding on and inure to the benefit of
                  the parties hereto and their respective successors and
                  authorized assigns.

                  7.2. Modification. This Agreement may be modified only upon
                  the execution of a written agreement signed by both of the
                  parties.

                  7.3 Waivers. No failure on the part of either party hereto to
                  exercise, and no delay in exercising, any right, power, or
                  remedy hereunder shall operate as a waiver thereof nor shall
                  any single or partial exercise of any right, power, or remedy
                  hereunder preclude any other or further exercises thereof or
                  the exercise of any other right, power, or remedy.

                  7.4 Governing Law; Venue and Jurisdiction. This Agreement
                  shall be deemed to have been entered into in, and for all
                  purposes shall be governed by, the laws of the State of
                  Florida, without regard to Florida's choice of law decisions.
                  The parties agree that any action brought by either party
                  against the other in any court, whether federal or state,
                  shall be brought within Orange County, Florida, in the
                  applicable state and federal judicial districts and do hereby
                  waive all questions of personal jurisdiction or venue for the
                  purpose or carrying out this provision.

                  7.5 Attorneys' Fees. In the event of a dispute under this
                  Agreement, the non-prevailing party shall pay all of the
                  prevailing party's reasonable attorneys' fees and costs
                  incurred in connection with any such action, including
                  post-judgment collection proceedings.

                  7.6 Severability. In the event that any provision of this
                  Agreement, in whole or in part (or the application of any
                  provision to a specific situation), is held to be invalid or
                  unenforceable by the final judgment of a court of competent
                  jurisdiction after appeal or the time for appeal has expired,
                  such invalidity shall be limited to such specific provision or
                  portion thereof (or to such situation), and this Agreement
                  shall be construed and applied in such manner as to minimize
                  such unenforceability. This Agreement shall otherwise remain
                  in full force and effect.

                  7.7 Counterparts. This Agreement may be executed in two (2) or
                  more counterparts, each of which shall be deemed an original,
                  but all of which, taken together, shall constitute one and the
                  same instrument.

         In witness whereof, the parties hereto have executed this Agreement as
of the date and year first above written.

                                  "COMPANY"

                                   EREX, INC.

                                   By: /s/ Carl Dilley
                                      ------------------------------
                                       Carl Dilley, President

                                   "CONSULTANT"

                                   By: /s/ Steven E. Owlett
                                      ------------------------------
                                       Steven E. Owlett

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