{"data":{"id":"us/14-cfr-21.19","jurisdiction":"us","citation":"14 CFR 21.19","heading":"Changes requiring a new type certificate.","body":"Each person who proposes to change a product must apply for a new type certificate if the FAA finds that the proposed change in design, power, thrust, or weight is so extensive that a substantially complete investigation of compliance with the applicable regulations is required.","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":"305e10a7344bf17b0975965c6c9fb6db5a836b562f02632664a6e2fc2a89c8b7","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-21.17","next":"us/14-cfr-21.20"},"notice":"GroundRules: Original legal text. Not legal advice."}