{"data":{"id":"us/14-cfr-21.115","jurisdiction":"us","citation":"14 CFR 21.115","heading":"Applicable requirements.","body":"(a) Each applicant for a supplemental type certificate must show that the altered product meets applicable requirements specified in § 21.101 and—\n(1) In the case of an acoustical change described in § 21.93(b), show compliance with the applicable noise requirements of part 36 of this chapter;\n(2) In the case of an emissions change described in § 21.93(c), show compliance with the applicable fuel venting and exhaust emissions requirements of part 34 of this chapter; and\n(3) In the case of a fuel efficiency change described in § 21.93(d), show compliance with the applicable fuel efficiency requirements of part 38 of this chapter.\n(b) Each applicant for a supplemental type certificate must meet §§ 21.33 and 21.53 with respect to each change in the type design.","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 E—Supplemental 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":"c1ea16d99a5d69e037231dd50d3416f6256326f29a14e8ec83f592fbe967a427","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-21.113","next":"us/14-cfr-21.117"},"notice":"GroundRules: Original legal text. Not legal advice."}