{"data":{"id":"us/14-cfr-21.53","jurisdiction":"us","citation":"14 CFR 21.53","heading":"Statement of conformity.","body":"(a) Each applicant must provide, in a form and manner acceptable to the FAA, a statement that each aircraft engine or propeller presented for type certification conforms to its type design.\n(b) Each applicant must submit a statement of conformity to the FAA for each aircraft or part thereof presented to the FAA for tests. This statement of conformity must include a statement that the applicant has complied with § 21.33(a) (unless otherwise authorized under that paragraph).","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 B—Type 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":"808db23a70b073302293c0991014aab3731c034fa06787010bbc03622afda60d","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-21.51","next":"us/14-cfr-21.55"},"notice":"GroundRules: Original legal text. Not legal advice."}