COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Victa and A.E.S.L. Airtourer Series Aeroplanes AD/VAT/13 Stall Warning Indicator - Installation 4/64 Applicability: Victa Airtourer 100 and 115. Document: 1. Victa Mod. B47; or 2. Victa SB No. 25. Compliance: Before 1 September 1971.