14 C.F.R. § 21.177 Amendment or modification.
Title 14 - Aeronautics and Space
An airworthiness certificate may be amended or modified only upon application to the Administrator.
Title 14: Aeronautics and Space
PART 21—CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS
Subpart H—Airworthiness Certificates
§ 21.177 Amendment or modification.