{"data":{"id":"us/14-cfr-31.39","jurisdiction":"us","citation":"14 CFR 31.39","heading":"Protection.","body":"Each part of the balloon must be suitably protected against deterioration or loss of strength in service due to weathering, corrosion, or other causes.","path":["Title 14—Aeronautics and Space","CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER C—AIRCRAFT","PART 31—AIRWORTHINESS STANDARDS: MANNED FREE BALLOONS","Subpart D—Design 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":"abdd46a43c94759fec11ce64f5eff5a9c59f7c7d6b7112d10a69919328b3e07f","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-31.37","next":"us/14-cfr-31.41"},"notice":"GroundRules: Original legal text. Not legal advice."}