[Code of Federal Regulations] [Title 14, Volume 1] [Revised as of January 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 14CFR21.111] [Page 138] 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 E_Supplemental Type Certificates Sec. 21.111 Applicability. Source: Docket No. 5085, 29 FR 14568, Oct. 24, 1964, unless otherwise noted. This subpart prescribes procedural requirements for the issue of supplemental type certificates.