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-2/34 Rudder Bar Lower Mounting - Inspection NK and Modification Applicability: All model BN-2A which have exceeded 1000 hours total time in service, except those which have incorporated Mod. No. NB/M/463 Part A. Document: Britten Norman SB No. BN-2/SB.74, Issue 2. Compliance: Within 25 hours time in service after 24 May 1976 and thereafter at intervals not exceeding 200 hours time in service until modified. Modify not later than 31 August 1976.