{"data":{"id":"us/14-cfr-29.1553","jurisdiction":"us","citation":"14 CFR 29.1553","heading":"Fuel quantity indicator.","body":"If the unusable fuel supply for any tank exceeds one gallon, or five percent of the tank capacity, whichever is greater, a red arc must be marked on its indicator extending from the calibrated zero reading to the lowest reading obtainable in level flight.","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 G—Operating Limitations and Information"],"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":"9b3408c96498f07edb304c1e2027371a8f912b46dbad39ee343a45c19183c6d9","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-29.1551","next":"us/14-cfr-29.1555"},"notice":"GroundRules: Original legal text. Not legal advice."}