{"data":{"id":"us/14-cfr-31.55","jurisdiction":"us","citation":"14 CFR 31.55","heading":"Deflation means.","body":"There must be a means to allow emergency deflation of the envelope so as to allow a safe emergency landing. If a system other than a manual system is used, the reliability of the system used must be substantiated.","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":"6d2276c0660ae15d92a6c5fedb70461943291e1f781fb9e8cdfc16556ff7b598","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-31.53","next":"us/14-cfr-31.57"},"notice":"GroundRules: Original legal text. Not legal advice."}