Summary
This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Airbus Model A320-111, - 211, -212, and -231 series airplanes. This proposal would require removing the existing forward pintle nut and cross bolt on the main landing gear (MLG), and installing a new nylon spacer and cross bolt and nut. This proposal is prompted by results of fatigue testing which revealed that the cross bolt and nut in the forward pintle pin of the MLG were damaged due to fatigue cracking. The actions specified by the proposed AD are intended to prevent such fatigue cracking, which could result in collapse of the MLG.