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-2/63 Nacelle Box Structure at Bottom Fitting of MLG 6/98
Applicability: All Model BN-2, BN-2A, BN-2B, and BN2T Islanders.
Requirement: Inspect in accordance with Pilatus Britten-Norman Mandatory Service Bulletin BN2/SB.235.
Compliance: Unless already accomplished, within 50 landings after 21 May 1998.
This airworthiness directive becomes effective on 21 May 1998.
Background: Some of the attachment bolts of the main landing gear bottom fitting have been found in a threadbound condition, and AD/BN-2/61 was issued to address this problem.
Threadbound bolts can cause play at the main landing gear bottom fitting and result in cracks in the nacelle box structure.