COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Airconditioning Equipment AD/AIRCON/11 ABG Semca Cold Air Unit - Compressor Wheel and Scroll Applicability: Aerospatiale AS332 helicopters, but not limited to this type. 6/92 Requirement: Action in accordance with the technical requirements of French AD 91-254(AB) for ABG SEMCA cold air units P/N 3202 A0101 and 3202 B0101 respectively installed in airconditioning pack P/N 3502 A03 and 3502 D01 as installed on, but not limited to, Aerospatiale AS332. Note: ABG SEMCA Service Bulletin No. 3502-21-01 R1 is referred. Compliance: Within 100 hours after 21 June 1992. Background: To prevent compressor wheel and scroll deterioration due to erosion of heads of rivets which attach the shield to the compressor gasket. ABG SEMCA Service Bulletin No. 3502-21-01 R1 refers.