COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Short SD3-60 Series Aeroplanes AD/SD3-60/5 Amdt 1 Fuselage Frame 475 - Modification 4/85 Applicability: All model SD3-60 with S/Nos SH 3601 to SH 3633. Document: Shorts SB SD360-53-11 R1. Compliance: Prior to December 1985. Background: The manufacturer reports difficulty in obtaining MS 21141 blind fasteners. The service bulletin has been re-issued and specifies alternate fasteners. The compliance date is also revised.