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 121/28 Wing to Fuselage Main Spar Attachment Fitting 9/95 Applicability: All Beagle B121 Pup Series 2 and Series 3 aircraft. Requirement: Perform a high frequency eddy current inspection of the wing to fuselage main spar attachment fitting in accordance with Jetstream Alert Service Bulletin (ASB) B121/100. Note: CAA(UK) AD 007-01-95 refers. Compliance: Inspect at the thresholds and intervals specified in Jetstream ASB B121/100 as adjusted by the role factors assigned by Jetstream SB B121/76. Background: Fatigue calculations by the manufacturer have indicated that additional inspections are required on the wing to fuselage main spar attachment fitting.