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-2/44 Main Undercarriage Leg - Conversion 1/80 Applicability: All models. Document: 1. Britten Norman SB No. BN-2/SB.134; and 2. A.P. Precision Hydraulics SB No. 32-277. Compliance: Before 1 June 1980. Background: A number of undercarriage leg assemblies P/N AIR83002 not cleared for installation on BN-2A aircraft must be converted to the original design standard in accordance with the referenced Service Bulletin. Failure to promptly carry out the conversion may result in transmission of higher than normal landing loads to the airframe.