Airworthiness Directive · Amendment 39-9161 · B-N Group Ltd. Airplanes
B-N Group Ltd. Airplanes
This AD applies to B-N Group Ltd. BN-2A, BN-2A-2, BN-2A-20, BN-2A-21, BN-2A-26, BN-2A-27, BN-2A-3, BN-2A-6, BN-2A-8, BN-2A-9, BN-2B-20, BN-2B-21, BN-2B-26, BN-2B-27, BN-2T, BN-2T-4R, BN2A MK. III, BN2A MK. III-2, BN2A MK. III-3.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment adopts a new airworthiness directive (AD) that applies to Pilatus Britten-Norman BN2A, BN2B, and BN2T Islander and BN2A Mk III Trislander series airplanes that are equipped with a nose wheel steering disconnect system with either a Modification NB/M/503 or Modification NB/M/733 nose undercarriage unit. This action requires repetitively inspecting the nose wheel steering drive ring for cracks, and replacing any cracked drive ring. A report of the rudder pedals jamming in the central position during takeoff on one of the affected airplanes prompted this action. The actions specified by this AD are intended to prevent failure of the nose wheel steering system because of a cracked drive ring, which, if not detected and corrected, could result in the inability to move the rudder pedals.
