{"data":{"id":"us/14-cfr-31.51","jurisdiction":"us","citation":"14 CFR 31.51","heading":"Ballast.","body":"Each captive gas balloon must have a means for the safe storage and controlled release of ballast. The ballast must consist of material that, if released during flight, is not hazardous to persons on the ground.","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":"39f2721cddd473d0694d4c0bc715df167f7c4e1abbce69cc338827024408a940","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-31.49","next":"us/14-cfr-31.53"},"notice":"GroundRules: Original legal text. Not legal advice."}