COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Boeing 727 Series Aeroplanes AD/B727/117 Inboard T/E Flaps Inboard Track 8/90 Applicability: All models 727. Requirement: Action in accordance with FAA AD 90-07-05 Amendment 39-6548, Parts A, B, C and D. Note: Boeing SB 727-57-0178 Rev 3, and Boeing SB 727-57-117 Rev 5 refer. Compliance: Unless previously accomplished: For Part A: Prior to exceeding 1000 flight cycles after 9 August 1990 or prior to 28 February 1991, whichever occurs first, and thereafter in accordance with the Requirement Document. For Part B: Prior to (1) or (2) below, whichever occurs later, and thereafter in accordance with the Requirement document. (1) Prior to exceeding 9000 flight cycles or 6 years since modification, whichever occurs first; or (2) Prior to exceeding 1000 flight cycles after 9 August 1990, or prior to 28 February 1991, whichever occurs first. For Part C: Prior to (1) or (2) below whichever occurs later, and thereafter in accordance with the Requirement document. (1) Prior to exceeding 12000 flight cycles or 8 years since repair whichever occurs first, or (2) Prior to exceeding 1000 flight cycles after 9 August 1990, or prior to 28 February 1991, whichever occurs first. For Part D: Compliance in accordance with the Requirement document constitutes terminating action for the inspection requirements of the Directive. Background: Country of origin AD. Cracking and/or corrosion of the flap tracks has occurred and if not corrected could lead to separation of a flap.