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 121/16 Amdt 1 Fuselage/Mainplane Attachments 10/78 Applicability: All B121 series 2 and 3 aircraft. Requirement: Action in accordance with British Aerospace Pup Service Bulletin No. B121/76. Compliance: As detailed in the Requirement Document. Note: Role factors must be assessed by the manufacturer in accordance with appendices B and C of SB 121/76, and evidence of the assessment provided to the Secretary.