{"data":{"id":"us/14-cfr-21.121","jurisdiction":"us","citation":"14 CFR 21.121","heading":"Applicability.","body":"This subpart prescribes rules for production under a type certificate.","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 F—Production Under Type Certificate"],"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":"2e4666dcac86a43b866aa2f6d9e080545d7dcf7591439a6839804608d7cd6f69","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-21.120","next":"us/14-cfr-21.122"},"notice":"GroundRules: Original legal text. Not legal advice."}