Airworthiness Directive · Amendment 39-8882 · Viking Air Limited Airplanes
Viking Air Limited Airplanes
This AD applies to Viking Air Limited DHC-6-1, DHC-6-100, DHC-6-200, DHC-6-300.
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) 88-13-11, which currently requires repetitively inspecting both wing main spar lower cap angles for corrosion, and repairing or replacing any corroded part. This action retains these inspection and possible repair or replacement requirements, but eliminates the dual compliance time of both hours time-in-service (TIS) and calendar time. The Federal Aviation Administration (FAA) has determined that, since corrosion occurs regardless of whether the airplane is in service, the best compliance method for the proposed action is calendar time. The actions specified by this AD are intended to prevent failure of the wing structure because of corroded wing main spar lower cap angles.
