EXHIBIT 32.1

                                CERTIFICATION OF
                   CURTIS W. MEWBOURNE/CHIEF EXECUTIVE OFFICER
                      OF MEWBOURNE DEVELOPMENT CORPORATION
                         PURSUANT TO 18 U.S.C. ss. 1350


         I, Curtis W. Mewbourne, Chief Executive 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/ Curtis W. Mewbourne
                                                      -------------------------
                                                      Name: Curtis W. Mewbourne
                                                      Date: August 13, 2003