{"data":{"id":"us/14-cfr-21.320","jurisdiction":"us","citation":"14 CFR 21.320","heading":"Changes in quality system.","body":"After the issuance of a PMA—\n(a) Each change to the quality system is subject to review by the FAA; and\n(b) The holder of the PMA must immediately notify the FAA, in writing, of any change that may affect the inspection, conformity, or airworthiness of its article.","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 K—Parts Manufacturer Approvals"],"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":"0ded8488e9de037a95852afc57335b77259dca8eda0e29e4c8c61fc5ea29a729","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-21.319","next":"us/14-cfr-21.321"},"notice":"GroundRules: Original legal text. Not legal advice."}