COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Boeing 727 Series Aeroplanes AD/B727/125 Upper Body Skin Bonded Tear Straps 2/91 Applicability: Model 727 referenced in Requirement Document. Requirement: Action in accordance with the technical requirements of FAA AD 90-20-18 Amdt 39-6747. Note: Boeing SB 727-53-0082 Revisions 3,4 and 5 refer. Compliance: As specified in the Requirement document with effective date 29 October 1990. Background: Country of origin AD.