COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Boeing 727 Series Aeroplanes AD/B727/70 Main Landing Gear Down-Lock Torque Shaft P/N 65-23366 - Replacement 10/75 Applicability: All models listed in Boeing SB No. 32-180 Rev. 1. with main landing gear down-lock torque shaft P/No. 65-23366. Document: FAA AD 72-12-01, Boeing Amdt. 39-2353. Compliance: As detailed in the requirement document.