COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Pilatus Britten-Norman BN-2 Series Aeroplanes AD/BN-2/43 Engine Controls Attachment Brackets - Modification 5/79 Applicability: All models. Document: Britten Norman SB No. BN-2/SB.109, Issue 3. Compliance: Within 100 hours time in service after 31 May 1979. Background: To prevent partial loss of engine control due to fatigue failure of the engine control cables attachment brackets, the brackets are to be either reinforced if uncracked or replaced with improved brackets if cracked.