{"data":{"id":"us/14-cfr-21.177","jurisdiction":"us","citation":"14 CFR 21.177","heading":"Amendment or modification.","body":"An airworthiness certificate may be amended or modified only upon application to the FAA.","path":["Title 14—Aeronautics and Space","CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER C—AIRCRAFT","PART 21—CERTIFICATION PROCEDURES FOR PRODUCTS AND ARTICLES","Subpart H—Airworthiness Certificates"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-14.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:20Z","sha256":"8f0cc69e946ba43b54f258bf8ecde39ba33c195360117ba61e05454661b03e5c","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-21.175","next":"us/14-cfr-21.179"},"notice":"GroundRules: Original legal text. Not legal advice."}