{"data":{"id":"us/14-cfr-125.139","jurisdiction":"us","citation":"14 CFR 125.139","heading":"Oil system drains.","body":"Accessible drains incorporating either a manual or automatic means for positive locking in the closed position must be provided to allow safe drainage of the entire oil system.","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":"a3ace5a9a86e81bce623d6ee787e64bad7ebc0cda41cbe750753ba2dcf1870e1","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-125.137","next":"us/14-cfr-125.141"},"notice":"GroundRules: Original legal text. Not legal advice."}