{"data":{"id":"us/14-cfr-29.603","jurisdiction":"us","citation":"14 CFR 29.603","heading":"Materials.","body":"The suitability and durability of materials used for parts, the failure of which could adversely affect safety, must—\n(a) Be established on the basis of experience or tests;\n(b) Meet approved specifications that ensure their having the strength and other properties assumed in the design data; and\n(c) Take into account the effects of environmental conditions, such as temperature and humidity, expected in service.","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":"6cb31181cf4651dd118e58c714bb8936387fb4942e9df291174a5dbfcd8f020b","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-29.602","next":"us/14-cfr-29.605"},"notice":"GroundRules: Original legal text. Not legal advice."}