COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Mooney M20 Series Aeroplanes AD/M20/21 Engine Mount - Inspection and Repair 5/75 Applicability: Model M20C with S/Nos. 1852, 1940 to 3466, 670001 to 700061, and 20-0001 to 20- 1156; Model M20D S/Nos. 101 to 260; Model M20E S/Nos. 101 to 1308, 670001 to 700061, 20-0001 to 21-1165; Model M20F S/Nos. 660003 to 700072, 22-0001 to 22- 1207; Model M20G S/Nos. 680001 to 700006. Document: Mooney SB No. M20-192. Compliance: 1. For engine mounts which have achieved 450 hours time in service - within 50 hours time in service after 19 May 1975 and there- after at intervals not exceeding 100 hours time in service until repaired or replaced as detailed in SB M20-192. 2. For all other mounts - before achieving 450 hours time in service and thereafter at intervals not exceeding 100 hours time in service until repaired or replaced as detailed in the Service Bulletin.