COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Fokker F28 Series Aeroplanes AD/F28/43 Amdt 1 Wing Flap Mechanical Actuators - Inspection 3/82 Applicability: All models with flap actuators modified to Menasco SBs 27-63 or 27-66 but NOT modified to Menasco SB 27-81. Document: 1. Fokker SB No. F28/27-137; or 2. RLD AD. BLA 80-08-27. Compliance: As detailed in requirement document. This Directive has been raised in issue to include reference to Menasco SB No. 27-81, which introduces an improved steel ball return tube no longer subject to repetitive inspection.