[Code of Federal Regulations] [Title 14, Volume 2] [Revised as of January 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 14CFR65.73] [Page 151] TITLE 14--AERONAUTICS AND SPACE CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) PART 65_CERTIFICATION: AIRMEN OTHER THAN FLIGHT CREWMEMBERS--Table of Contents Subpart D_Mechanics Sec. 65.73 Ratings. (a) The following ratings are issued under this subpart: (1) Airframe. (2) Powerplant. (b) A mechanic certificate with an aircraft or aircraft engine rating, or both, that was issued before, and was valid on, June 15, 1952, is equal to a mechanic certificate with an airframe or powerplant rating, or both, as the case may be, and may be exchanged for such a corresponding certificate and rating or ratings.