Summary
This document revises an earlier proposed airworthiness directive (AD), applicable to all Airbus Model A330, A340-200, and A340-300 series airplanes. The original NPRM would have required repetitive inspections for discrepancies of the grease and gear teeth of the radial variable differential transducer of the nose wheel steering gearbox; or repetitive inspections for damage of the chrome on the bearing surface of the nose landing gear (NLG) main fitting barrel; as applicable. And, for airplanes with any discrepancy or damage, the original NPRM would have required an additional inspection or corrective actions. This new action revises the proposed rule by adding a terminating action and removing certain airplanes from the applicability. The actions specified by this new proposed AD are intended to prevent incorrect operation or jamming of the nose wheel steering, which could cause reduced controllability of the airplane on the ground. This action is intended to address the identified unsafe condition.