{"data":{"id":"us/14-cfr-121.217","jurisdiction":"us","citation":"14 CFR 121.217","heading":"Internal doors.","body":"In any case where internal doors are equipped with louvres or other ventilating means, there must be a means convenient to the crew for closing the flow of air through the door when necessary.","path":["Title 14—Aeronautics and Space","CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER G—AIR CARRIERS AND OPERATORS FOR COMPENSATION OR HIRE: CERTIFICATION AND OPERATIONS","PART 121—OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS","Subpart J—Special Airworthiness Requirements"],"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":"776de748dd285332d70e6a254afbce46e8834c98a2ea6a77c6a0e6c8e3819696","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-121.215","next":"us/14-cfr-121.219"},"notice":"GroundRules: Original legal text. Not legal advice."}