{"data":{"id":"us/14-cfr-29.661","jurisdiction":"us","citation":"14 CFR 29.661","heading":"Rotor blade clearance.","body":"There must be enough clearance between the rotor blades and other parts of the structure to prevent the blades from striking any part of the structure during any operating condition.","path":["Title 14—Aeronautics and Space","CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER C—AIRCRAFT","PART 29—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY ROTORCRAFT","Subpart D—Design and Construction"],"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":"3f3c72e7276dff19bbcedc3f402105d48424d480b984bcbfa897efe7cc7b9822","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-29.659","next":"us/14-cfr-29.663"},"notice":"GroundRules: Original legal text. Not legal advice."}