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. This action requires a one-time inspection to verify that the attachment screws at a pressure switch located on the trim tank fuel transfer line are properly torqued, and that lockwires are installed. This amendment is prompted by reports of loose screws and missing lockwires at this attachment. The actions specified in this AD are intended to prevent loose or missing screws, which could allow fuel to leak from the pressure switch connection; if a leak were to occur during flight with a full trim tank, there would be no warning indication to the flight crew, and the airplane may not have enough fuel to complete the flight safely.