{"data":{"id":"us/14-cfr-29.619","jurisdiction":"us","citation":"14 CFR 29.619","heading":"Special factors.","body":"(a) The special factors prescribed in §§ 29.621 through 29.625 apply to each part of the structure whose strength is—\n(1) Uncertain;\n(2) Likely to deteriorate in service before normal replacement; or\n(3) Subject to appreciable variability due to—\n(i) Uncertainties in manufacturing processes; or\n(ii) Uncertainties in inspection methods.\n(b) For each part of the rotorcraft to which §§ 29.621 through 29.625 apply, the factor of safety prescribed in § 29.303 must be multiplied by a special factor equal to—\n(1) The applicable special factors prescribed in §§ 29.621 through 29.625; or\n(2) Any other factor great enough to ensure that the probability of the part being understrength because of the uncertainties specified in paragraph (a) of this section is extremely remote.","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":"7bcae61b05e2ce3fa658484a8100696caab8194db619f74072a0154c6e505775","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-29.613","next":"us/14-cfr-29.621"},"notice":"GroundRules: Original legal text. Not legal advice."}