Airworthiness Directive · Amendment 39-9515 · Airbus Airplanes
Airbus Airplanes
This AD applies to Airbus A340-211, A340-212, A340-213, 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 A340 series airplanes. This action requires repetitive inspections to detect corrosion and cracking of the shortening mechanism pins in the main landing gear (MLG), and repair or replacement, if necessary. It also requires replacement of the shortening mechanism pin and retraction mechanism pins; the forward pintle pin; the shortening mechanism bellcrank pin; and the bellcrank subassembly of the shortening mechanism. This amendment is prompted by reports of failure of the shortening mechanism pins due to improper grinding of the chrome plating during manufacture, which led to the initiation of stress corrosion and cracks. The actions specified in this AD are intended to prevent failure of these pins, which could lead to a significant reduction of the shock absorber capability or damage to various components of the MLG, and eventually could lead to the failure of the MLG.
