1 CERTIFICATE OF SECOND AMENDMENT TO CERTIFICATE OF LIMITED PARTNERSHIP OF MEWBOURNE ENERGY PARTNERS 97-A, L.P. The Certificate of Second Amendment to Certificate of Limited Partnership of MEWBOURNE ENERGY PARTNERS 97-A, L.P. (the "Partnership") is being executed and filed by the undersigned general partners under the Delaware Revised Uniform Limited Partnership Act. ARTICLE ONE In order to reflect the assignment and withdrawal by certain general partners of their General Partner Interest in the Partnership and the substitution of their respective transferees as a substituted General Partner in the Partnership, Exhibit A to the Certificate of Limited Partnership of the Partnership, as previously amended by that certain Certificate of Amendment to Certificate of Limited Partnership dated November 7, 1997, is hereby deleted and such Exhibit A is hereby restated as set forth in Exhibit A hereto. ARTICLE TWO Article Four of the Certificate of Limited Partnership of the Partnership is hereby amended in its entirety to read as follows: The name and business address of the managing general partner of the Partnership is Mewbourne Development Corporation, 3901 S. Broadway, Tyler, Texas 75701. The names of the investor general partners admitted to the Partnership are set forth on Exhibit A hereto. The business address of the investor general partners is 3901 S. Broadway, Tyler, Texas 75701. IN WITNESS WHEREOF, the undersigned, the Managing Partner by and through a duly authorized officer thereof acting for itself and as attorney-in-fact for each of the General Partners set forth on Exhibit A has executed this Certificate of Amendment to Certificate of Limited Partnership on this 23rd day of December, 1997. MEWBOURNE DEVELOPMENT CORPORATION, acting for itself and as attorney-in-fact for each of the General Partners as set forth on Exhibit A By: /s/ J. Roe Buckley --------------------------------------------------- J. Roe Buckley, Treasurer 2 EXHIBIT A GENERAL PARTNER INTEREST MEWBOURNE ENERGY PARTNERS 97-A Billy J. & Val Joyce Adams John R. Amrien, M.D. Howard L. Baker Jr. Trust Albert D. Ballance Dale W. & Lillian R. Beebee L. Walter, Jr. & Joan B. Benjamin Doris M. Bishop Herman & Anne K. Blackman Blackman Family Trust James E. & Virginia M. Blackman, Trustees Frederick W. Bode Thomas C. Bode Michael F. & Mary Ann Bond Mark J. Bowman William L. & Nancy H. Brach Ivor E. & Delores Bridge Anne J. Britt Brook Family Trust Arthur H. & Mary P. Brook, Trustees Eric B. & Ann G. Brown Esther L. Bucher Greg & Molly Bunton J. Millard & Diane Burr Esther Calcaterra Trust Esther Calcaterra, Trustee 3 Carroll E. Caldwell Trust Carroll E. Caldwell, Trustee Mary M. Caldwell Trust Mary M. Caldwell, Trustee John E. Cameron, Jr. L. Robert Castorr Miriam M. Chang & Arthur W. Donoho Philip W. Chao Marcella H. Cleary Trust Marcella H. Cleary, Trustee John T. & Mary J. Coffey Donald W. Cohen Linda S. Cohen Conrad Family Trust William D. & Eloise D. Conrad, Trustees Clare Crawford-Mason R. Russell Darby Greg D. Davis Del-Kijaico, Inc. Anthony J. & Rosina Disalvo Carlo J. Disalvo Trust Carlo J. Disalvo, Trustee Timothy R. & Nancy L. Dorlac Donald J. Dorr Mary Lou Doyle The Engle Trust Charles V. & Marjorie C. Engle, Trustees Sigo Falk Louis E. Fettig Rev. Trust Louis E. Fettig, Trustee Dr. George Figacz Trust Dr. George Figacz, Trustee 4 Robert S. Fishman Trust Richard C. Freedman & Michele Fishman, Trustees Mary M. Flauaus Rev. Living Trust Mary M. Wurtz, Trustee Francus Family Ltd. Partnership Cyril Francus General Partner Norman G. Frank Stephen J. Fukayama Edward Gilbert Dorothy I. Goggio Trust Dorothy I. Goggio, Trustee Leonard & Margaret Goggio Lawrence S. & Jolande E. Goldberg Vivian F. Goode Anne R. Gregg Rev. Trust Anne R. Gregg, Trustee Walter E. Gregg Rev. Trust Walter E. Gregg, Trustee Alice Griffey Rev. Living Trust Alice Griffey, Trustee David L. & Diane M. Grubbs Joan M. Gruebner Trust Herman W. Gruebner, Trustee George E. & Judy Guttschalk Farzana S. Habib Don E. & Gloria F. Hamrick Timothy A. Harrison Revocable Trust Timothy A. Harrison, Trustee Donald G. Heth Revocable Trust Donald G. Heth, Trustee Elaine M. & Phillip Heverin Floyd & Alice Ho 5 Larue A. & Amy M. Hoffman Family Trust Amy M. Hoffman, Trustee Holbrook Family Trust Joseph C. & Martha S. Holbrook, Trustees Rett & Jeanne Humke Larry S. & Beverly Humphries Barbara G. Johnson Larry A. Jones Jodi P. & Jessica L. Kane David K. Kennedy Kevin P. Kertz Rose Mary Kinder Rev. Living Trust William L. Kraus III Dennis L. Krause Richard D. Lind Trust Richard D. Lind, Trustee Edward G. Lippitt Albert L., Jr. & Barbara A. Lock Susan M. Longust Trust Rose Lorie Trust Richard A. Bishop, Trustee Robert B. & Susan G. McKimens C. Robert Meloni John G. Mergner, Sr. Ralph W. Minard Trust Ralph W. Minard, Trustee Nancy Thompson Minnich Lois A. Minto Rev. Living Trust Lois A. Minto, Trustee C. W. Moore Robert E. Mortensen 6 Mothershead Family Trust Theodore & Beaty Mothershead, Trustees John C. & Mildred Estes New Robert E. O'Neill Linda J. Ochenrider Loretta A. Perry Danial L. & Robbie L. Rose-Poel Patricia H. Polinsky Charles H. Powers Katherine Rallo Trust Katherine Rallo, Trustee Rita A. Relyea The Richards Family Trust Jeanette A. Richards, Trustee David P. Robinson Marilyn D. Rodell Trust Marilyn D. Rodell, Trustee Fred L. Romantine Lance D. & Carmen E. Samuelson Thomas P. & Rachel M. Schneider Judy L. Schreiber & Loren R. Mosher David R. & Jan Schroeder James Burton Shaw Tina R. Sigman Trust John T. Skehan James C. Smith, Jr. Trust James C. Smith, Jr., Trustee R. Curtis, Jr. & Anne V. Steele Ronald W. & Mary Jane Steele Carol H. Straus Mary A. Suchan Rev. Living Trust 7 Gladyce Sumida Jesse L. & Charlene A. Szwargulski Trust Jesse L. & Charlene A. Szwargulski, Trustees George S. & Susan D. Templeton Thompson Revocable Living Trust Cary J. & Linda L. Thompson, Trustees The Thompson Family Trust Virgil R. Thompson, Trustee Gary R. Todd Thomas M. & Barbara A. Tuggle Ka Khy Tze Barbara Waldman Wamhoff Revocable Trust Robert E. & Diane F. Wamhoff, Trustees Weiland Family Trust Barbara Waldman, Trustee Gary S. & Patricia J. Wilson Dennis P. Yarnell Maria A. Zettler Trust Maria A. Zettler, Trustee 8 EXHIBIT B LIMITED PARTNER INTEREST MEWBOURNE ENERGY PARTNERS 97-A Elizabeth C. O. Bellaver William F. Ferguson, Jr. Helen F. Grim John E. Gusto Trust John E. Gusto, Trustee C. Russell & Anita D. Johnson Johnson Loving Trust Susan G. Johnson, Trustee Thomas Michael & Anne L. Knasel Wilfred Mendez Charles W. Rannells, III Marian M. Reagan Josephine L. Smith Josephine L. Smith Trust B Josephine L. Smith, Trustee Russell F. & Laurie A. Warren