COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Schweizer (Grumman) G-164 (Ag-Cat) Series Aeroplanes AD/G164/4 Amdt 1 Propeller Security - Inspection 3/66 Applicability: All models fitted with J5404 propeller. Document: 1. Grumman G164 SB No. 32A; or 2. FAA AD 66-1-2. Compliance: Forthwith.