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 121/29 Aircraft Fatigue Life 9/95 Applicability: B121 Pup, all models. Requirement: Retire the airframe from service before exceeding 17900 fatigue hours. Fatigue hours shall be calculated in accordance with Jetstream Alert Service Bulletin B121/101. Note: CAA(UK) AD 014-03-95 refers. Compliance: Effective 17 August 1995. Background: The Beagle Pup has been allocated a mandatory fatigue life by the United Kingdom Civil Aviation Authority.