EXHIBIT 10.19
                                TENTH AMENDMENT TO
                      AMENDED AND RESTATED CREDIT AGREEMENT


         TENTH AMENDMENT, dated as of October 31, 2005 (this "Amendment"), to
Credit Agreement dated June 30, 2000 (as amended, the "Agreement") by and
between AeroCentury Corp., a Delaware corporation ("AeroCentury"), the banking
institutions signatories hereto and such other institutions that hereafter
become a "Bank" pursuant to Section 10.4 of the Agreement (collectively the
"Banks" and individually a "Bank") and National City Bank, a national banking
association, as Agent for the Banks under the Agreement ("National City" which
shall mean in its capacity as Agent unless specifically stated otherwise). All
capitalized terms used herein and not otherwise defined shall have the
respective meanings ascribed to them in the Agreement.

                              Preliminary Statement

         WHEREAS, National City and AeroCentury, together with the other Banks,
desire to amend the Agreement in the manner hereinafter set forth;

         WHEREAS, AeroCentury is not in compliance with the Minimum Tangible Net
Worth requirement set forth in Section 7.1 of the Agreement for the Fiscal
Quarter beginning October 1, 2005; and

         WHEREAS, Section 10.2 of the Credit Agreement requires that the written
consent of National City and the Banks be obtained for certain amendments,
modifications or waivers contemplated herein.

         NOW THEREFORE, in consideration of the premises and promises
hereinafter set forth and intending to be legally bound hereby, the parties
hereto agree as follows:

1. Amendment to Agreement.

         Section 2.1 of the Agreement. The Revolver Termination Date of "October
         31, 2005" as set forth on the fourth line of Section 2.1(a) of the
         Agreement shall be and hereby is amended to "November 9, 2005."

2.   Waiver. With respect to the Fiscal Quarter beginning as of October 1, 2005
     only, National City and the Banks hereby waive the financial covenant
     requirements set forth in Section 7.1 "Minimum Tangible Net Worth" which
     AeroCentury is required to maintain so long as the Revolving Loan
     Commitments are in effect or any Obligation remains unpaid or outstanding.

3.   Representations and Warranties. Except as otherwise disclosed herein,
     AeroCentury hereby restates the representations and warranties made in the
     Agreement, including, but not limited to, Article 3 thereof, on and as of
     the date hereof as if originally given on this date.

4.   Covenants. Subject to the effectiveness of the waiver provided herein,
     AeroCentury hereby represents and warrants that it is in compliance and has
     complied with each and every covenant set forth in the Agreement, as
     amended by this Amendment, including, but not limited to, Articles 5 and 6
     thereof, on and as of the date hereof.

5.   No Default or Event of Default. Except with regard to the Financial
     Covenant set forth in Section 7.1 of the Agreement concerning Minimum
     Tangible Net Worth, no Potential Default or Event of Default under the
     Agreement has occurred and is continuing.

6.   Effectiveness Conditions. This Amendment shall be effective upon completion
     of the following conditions precedent (all documents to be in form and
     substance satisfactory to National City and the Banks, and dated the date
     hereof):

a.   execution and delivery of this Amendment; and

b.   execution and delivery of such other documents, instruments and agreements
     as National City and the Banks shall reasonably request in connection with
     the foregoing matters.

7.   Affirmation. AeroCentury hereby affirms its absolute and unconditional
     promise to pay to the Banks the Loans and all other amounts due under the
     Agreement and any other Loan Document on the maturity dates(s) provided in
     the Agreement or any other Loan Document, as such documents may be amended
     hereby.

8.   Effect of Amendment. This Amendment amends the Agreement only to the extent
     and in the manner herein set forth, and in all other respects the Agreement
     is ratified and confirmed. The waiver set forth above is granted precisely
     as written and shall not be deemed (i) to be a waiver of or a consent to,
     or amendment, supplement or modification of, any other term or condition of
     the Agreement or any of the instruments or agreements referred to therein
     or (ii) to prejudice any other right or rights which the Banks may now have
     or may have in the future under or in connection with the Agreement or any
     of the instruments or agreements referred to therein.

9.   Counterparts. This Amendment may be signed in any number of counterparts,
     each of which shall be an original, with the same effect as if the
     signatures hereto were upon the same instrument.



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         IN WITNESS WHEREOF, the parties hereto have each caused this Amendment
to be duly executed by their duly authorized representatives as of the date
first above written.


     AEROCENTURY CORP.


     By       ________________________
              Name:
              Title:



     NATIONAL CITY BANK


     By       ________________________
              Name:    Michael J. Labrum
    Title:   Senior Vice President



   CALIFORNIA BANK & TRUST


   By       ________________________
            Name:
            Title:



   FIRST BANK DBA
   FIRST BANK & TRUST


   By       ________________________
            Name:
            Title: