14 C.F.R. § 21.111 Applicability.
Title 14 - Aeronautics and Space
This subpart prescribes procedural requirements for the issue of supplemental type certificates.
Title 14: Aeronautics and Space
PART 21—CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS
Subpart E—Supplemental Type Certificates
§ 21.111 Applicability.