EXHIBIT 32.2

                                CERTIFICATION OF
                     J. ROE BUCKLEY/CHIEF FINANCIAL OFFICER
                      OF MEWBOURNE DEVELOPMENT CORPORATION
                         PURSUANT TO 18 U.S.C. ss. 1350


         I, J. Roe Buckley, Chief Financial Officer of Mewbourne Development
Corporation, Managing General Partner of Mewbourne Energy Partners 02-A, L.P.,
(the "Registrant"), hereby certify that the accompanying report on Form 10-Q,
for the quarterly period ended June 30, 2003 and filed with the Securities and
Exchange Commission on the date hereof pursuant to Section 13(a) of the
Securities Exchange Act of 1934 (the "Report") by the Registrant fully complies
with the requirements of that section.

         I further certify that the information contained in the Report fairly
presents, in all material respects, the financial condition and results of
operations of the Registrant.


                                                         /s/ J. Roe Buckley
                                                       ------------------------
                                                       Name: J. Roe Buckley
                                                       Date: August 13, 2003