COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Boeing 727 Series Aeroplanes AD/B727/138 Main Cargo Door 1/92 Applicability: Model 727 series as listed in the requirement document. Requirement: Action in accordance with the technical requirements of FAA AD 91-22-04 Amdt 39-8064. Note: Boeing SB 727-52-0142 refers. Compliance: As specified in the requirement document with a revised effective date of 12 January 1992 for Australian Registered Aircraft. Background: This AD arises from reports of worn latch cams and worn pressure relief door hinge fittings, and a report of a main cargo door that opened in flight. The effective date required by the FAA is extended by approximately one month.