Airworthiness Directive · Amendment 39-10329 · B-N Group Ltd. Airplanes
B-N Group Ltd. Airplanes
This AD applies to B-N Group Ltd. BN-2, 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, 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 supersedes Airworthiness Directive (AD) 97-03-03, which applies to certain Pilatus Britten-Norman Ltd. (Pilatus) BN-2, BN-2A, and BN-2B series airplanes that do not have Modification NB/M/1571 generator terminal diodes installed. AD 97-03-03 currently requires the installation of higher capacity diodes on the generator switches regardless of whether the airplane is equipped with the original 50 amp DC generating system or a Modification NB/M/1148, which is a 70 amp system. This action retains the actions of AD 97-03-03, but modifies the applicability section to reflect that this AD does not apply to Pilatus BN-2, BN-2A, and BN-2B series airplanes with 50 amp DC generation systems installed. This AD is the result of reports that the applicability section of AD 97-03-03 is incorrect. The actions specified by this AD are intended to prevent a loss of electrical power to the navigation, communications, and lighting systems, which could impair the pilot's ability to maintain control of the airplane. The incorporation by reference of Pilatus Britten-Norman Manufacturers Service Bulletin (SB) BN-2/SB.228, Issue 2, dated January 17, 1996, as listed in the regulations was previously approved by the Director of the Federal Register as of March 23, 1997 (62 FR 4909, February 3, 1997).
