COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Aermacchi - Lockheed AL 60 Series Aeroplanes AD/AL 60/2 Air Throttle/Waste Gate Coordinator - Modification 6/63 Applicability: All models equipped with Continental TSIO-470-B engine. Document: Aermacchi Lockheed 60 Mod. Bulletin No. 2. Compliance: Before 1 September 1971.