Summary
We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A330-200, A330-300, A340-200 and A340-300 series airplanes. This proposed AD was prompted by a report that revealed the wheel axles of the main landing gear (MLG) were machined with a radius as small as 0.4 millimeters. This proposed AD would require replacing the wheel axle of the MLG with a serviceable part. We are proposing this AD to prevent fatigue of the wheel axle of the MLG, which could adversely affect the structural integrity of the airplane.