{"data":{"id":"us/14-cfr-91.521","jurisdiction":"us","citation":"14 CFR 91.521","heading":"Shoulder harness.","body":"(a) No person may operate a transport category airplane that was type certificated after January 1, 1958, unless it is equipped at each seat at a flight deck station with a combined safety belt and shoulder harness that meets the applicable requirements specified in § 25.785 of this chapter, except that—\n(1) Shoulder harnesses and combined safety belt and shoulder harnesses that were approved and installed before March 6, 1980, may continue to be used; and\n(2) Safety belt and shoulder harness restraint systems may be designed to the inertia load factors established under the certification basis of the airplane.\n(b) No person may operate a transport category airplane unless it is equipped at each required flight attendant seat in the passenger compartment with a combined safety belt and shoulder harness that meets the applicable requirements specified in § 25.785 of this chapter, except that—\n(1) Shoulder harnesses and combined safety belt and shoulder harnesses that were approved and installed before March 6, 1980, may continue to be used; and\n(2) Safety belt and shoulder harness restraint systems may be designed to the inertia load factors established under the certification basis of the airplane.","path":["Title 14—Aeronautics and Space","CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER F—AIR TRAFFIC AND GENERAL OPERATING RULES","PART 91—GENERAL OPERATING AND FLIGHT RULES","Subpart F—Large and Turbine-Powered Multiengine Airplanes and Fractional Ownership Program Aircraft"],"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":"521692dbb0804515769d99c7d4552772610be6b400175525c517305a389c5327","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-91.519","next":"us/14-cfr-91.523"},"notice":"GroundRules: Original legal text. Not legal advice."}