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-2/12 Wing Attachment Spindles - Inspection NK Applicability: All models with S/Nos. C19 to C130 incorporating Modification NB/M/155. Document: Britten-Norman SB No. BN-2/SB.25. Compliance: Within 10 hours time in service after 23 February 1970.