{"data":{"id":"us/14-cfr-125.145","jurisdiction":"us","citation":"14 CFR 125.145","heading":"Firewall construction.","body":"Each firewall and shroud must—\n(a) Be so made that no hazardous quantity of air, fluids, or flame can pass from the engine compartment to other parts of the airplane;\n(b) Have all openings in the firewall or shroud sealed with close-fitting fireproof grommets, bushings, or firewall fittings;\n(c) Be made of fireproof material; and\n(d) Be protected against corrosion.","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 125—CERTIFICATION AND OPERATIONS: AIRCRAFT HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6,000 POUNDS OR MORE; AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT","Subpart E—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":"404b1e237f772523913012b4d19126ec2526b8b38c0c1480c21500da6d7ee1ec","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-125.143","next":"us/14-cfr-125.147"},"notice":"GroundRules: Original legal text. Not legal advice."}