Airworthiness Directive · Amendment 39-9487 · Airbus Airplanes
Airbus Airplanes
This AD applies to Airbus A330-301, A330-321, A330-322, A330-341, A330-342, A340-211, A340-212, A340-311, A340-312.
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), applicable to certain Airbus Model A330 and A340 series airplanes. This action requires installation of locking plates at the guide bushings in the area of the spigot bolt for certain aft flap track attachments. This amendment is prompted by reports of these guide bushings migrating out of position and resulting in a partial transfer of loads from the main attachment spigot bolt to two fail-safe bolts. Since the fail-safe bolts can withstand such loads for only a limited time, they can eventually fail and allow the wing flap to separate from the airplane. The actions specified in this AD are intended to prevent separation of the wing flap, which can lead to reduced controllability of the airplane and injury to persons or damage to property on the ground.
