Airworthiness Directives; Airbus Model A330 and A340 Series Airplanes

This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A330 and A340 series airplanes, that requires, among other actions, modifying the down drive brackets of the left- and right-hand sides of the inboard flap track 1 assembly and installation of bigger bolts and washers, and testing the torque value of the nuts. The actions specified by this AD are intended to prevent failure of the bolts due to flexural loads caused by transmission jam loading, which could lead to a "flap-locked" condition, causing reduced controllability of the airplane. This action is intended to address the identified unsafe condition.