[Code of Federal Regulations] [Title 14, Volume 1] [Revised as of January 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 14CFR21.121] [Page 132] TITLE 14--AERONAUTICS AND SPACE CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 21--CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS--Table of Contents Subpart F--Production Under Type Certificate Only Sec. 21.121 Applicability. Source: Docket No. 5085, 29 FR 14568, Oct. 24, 1964, unless otherwise noted. This subpart prescribes rules for production under a type certificate only.