Airworthiness Directive · Amendment 39-9257 · Airbus Airplanes
Airbus Airplanes
This AD applies to Airbus A340-211, A340-311.
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 A340-211 and -311 airplanes. This action requires replacement of the inboard and outboard aileron servo controls associated with hydraulic systems with new units that contain an improved seal installation. This amendment is prompted by reports of external leakage of hydraulic fluid on the inboard and/or outboard aileron servo controls on in-service airplanes. The actions specified in this AD are intended to prevent loss of hydraulic fluid, which may lead to the loss of the corresponding hydraulic system and its associated functions, and reduced controllability of the airplane.
