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 121/23 Engine Mounting Structure 10/79
All Beagle B121 series 1 and 2, which have achieved 1000 hours time in service.
Action in accordance with British Aerospace (Scottish Division) SB No. B121/81.
Inspect within 50 hours time in service after 27 August 1979 and thereafter at intervals not exceeding 50 hours time in service.
The manufacturer reports that cases of engine mount cracking have been discovered in service.