COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beagle B121 (Pup) Series Aeroplanes AD/BEA 121/3 Engine Bearers 1/70 Applicability: All Series 2 and 3 models prior to S/No. B121/107 which have 300 hours time in service. Requirement: Action in accordance with Beagle SB B121/11 (Mod. BE349). Compliance: Within 100 hours time in service from 31 January 1970.