Exhibit 99.1


                                AEROCENTURY CORP.

                    Certification of Chief Executive Officer
                  pursuant to 18 U.S.C. Section 1350 as adopted
            pursuant to Section 906 of the Sarbanes-Oxley Act of 2002


In connection with this quarterly report of AeroCentury Corp. (the "Company") on
Form 10-QSB for the period ended March 31, 2003 (the "Report"), I, Neal D.
Crispin, Chief Executive Officer of the Company, hereby certify as of the date
hereof, solely for purposes of Title 18, Chapter 63, Section 1350 of the United
States Code, that to the best of my knowledge:

              (1) the Report fully complies with the requirements of Section
              13(a) or 15(d), as applicable, of the Securities Exchange Act of
              1934, and

              (2) the information contained in the Report fairly presents, in
              all material respects, the financial condition and results of
              operations of the Company at the dates and for the periods
              indicated.



Date: May 14, 2003                  /s/  Neal D. Crispin
                                    ----------------------------
                                    Neal D. Crispin
                                    Chief Executive Officer