{"data":{"id":"us/14-cfr-125.149","jurisdiction":"us","citation":"14 CFR 125.149","heading":"Engine accessory section diaphragm.","body":"Unless equivalent protection can be shown by other means, a diaphragm that complies with § 125.145 must be provided on air-cooled engines to isolate the engine power section and all parts of the exhaust system from the engine accessory compartment.","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":"dd27959839abf2e4a1638eafc5c99335e0277e65737fc19cc9f3f62b59195ef9","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-125.147","next":"us/14-cfr-125.151"},"notice":"GroundRules: Original legal text. Not legal advice."}