<DOCUMENT>
<TYPE>EX-4.13
<SEQUENCE>9
<FILENAME>c49180_ex4-13.txt
<TEXT>
                                                                   Exhibit 4.13

               AMENDMENT TO MEMBERSHIP INTEREST PURCHASE AGREEMENT

            Amendment made this 6th day of July 2005 to that certain Membership
Interest Purchase Agreement dated May 24, 2005 (the "Purchase Agreement") by and
between Limco-Airepair, Inc., (the "Purchaser") and Claude L. Buller, Thomas W.
Ferrell, Paul R. Hilliard and Jim Taylor (the "Members") and Piedmont Aviation
Component Services, LLC (the "Company").

            The Purchase Agreement shall be amended as follows:

            1. The Purchase price for the Members' Membership Interest in the
      Company shall be reduced from $5,500,000 to $5,290,000.

      2. The sum of $156,656.34 shall be held in escrow in the trust account of
      Members' legal counsel, Andrew Hart Esq. (or such other special account he
      shall establish including special brokerage trust account to earn maximum
      interest on the sums held in escrow). The sums are held to guarantee the
      collection of such sum from EX-IM Bank, the insurer of the Varig Airlines
      accounts. Upon receipt of such sums Company will notify Andrew Hart
      immediately so that he may release such sums held to the Members, as their
      interest may appear, together with any interest earned thereon if any.
      During such time as the escrowed sums are held by Mr. Hart, the Company
      shall prosecute to the fullest extent its collection efforts to collect
      the insurance proceeds for which the funds are escrowed and will keep all
      necessary conditions to maintain the insurance in force as may be a
      condition precedent to insurance coverage, inclusive of payment of nay
      necessary premiums. Member Thomas W. Ferrell shall have the right to
      direct at Company's insurance proceeds collection effort and the Company
      shall assist in his efforts as is necessary and appropriate for achieving
      the success of collecting the proceeds as he may request. If said
      insurance proceeds are not collected in 365 days from date hereof, the
      Company will assign the insurance claim against EXIM Bank to the Members
      as their interest may appear and Mr. Hart will pay the escrowed funds to
      the Company and close the trust account.

      3. Lap top computers, cellular phones and in the possession of those
      Members performing consulting service through October 1, 2005, shall be
      returned to the Company on October 1, 2005, (unless such consulting
      services are extended or result in employment by the Company) along with
      any Company personal property in their possession on Company's inventory.

      4. Closing of this Agreement shall be July 7, 2005 as soon as possible
      following wire transfer of the sums to fund the purchase price.

All other terms of the Purchase Agreement not otherwise amended by this
Amendment shall remain in force and effect.

<PAGE>

Witness our hands this 6tth day of July, 2005

                                                      "Purchaser"

                                             Limco-Airepair, Inc.

                                             By: /s/ Shaul Menachem
                                                 ----------------------------
                                                 Shaul Menachem, President

                                                      "Members"

                                                 /s/ Claude L. Buller
                                                 ----------------------------
                                                 Claude L. Buller

                                                 /s/ Thomas W. Ferrell
                                                 ----------------------------
                                                 Thomas W. Ferrell

                                                 /s/ Paul R. Hilliard
                                                 ----------------------------
                                                 Paul R. Hilliard

                                                 /s/ Jim Taylor
                                                 ----------------------------
                                                 Jim Taylor

                                                      "Company"
                                             Piedmont Aviation Component
                                             Services, LLC

                                             By  /s/ Claude L. Buller
                                                 ----------------------------
                                                 Manager

                                       2
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</DOCUMENT>
