Airworthiness Directive · Amendment 39-8874 · The Boeing Company Airplanes
The Boeing Company Airplanes
This AD applies to The Boeing Company MD-11, MD-11F.
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 McDonnell Douglas Model MD-11 series airplanes, that requires visual inspection to detect inward buckling of the left and right main landing gear (MLG) pistons, and modification or replacement of the rebound check valves with new valves. If inward buckling is detected, this AD also requires replacement of the MLG piston with a serviceable piston. This amendment is prompted by failures of the MLG piston on Model DC-10 series airplanes. The actions specified by this AD are intended to prevent failure of the MLG piston and the subsequent reduced controllability of the airplane during landing.
