COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Boeing 727 Series Aeroplanes AD/B727/85 Main Landing Gear Side Strut 1/80 Applicability: All model 727 with line numbers 1 to 1361 inclusive. Document: 1. FAA AD 79-20-06, Amdt. 39-3581; or 2. Boeing SB No. 727-32-268, Rev. 1. Compliance: As per requirement document No. 1. Background: Incorrect parts may have been installed in the M-L-G side strut assemblies at manufacture.