Airworthiness Directives; Airbus Model A300-600 Series Airplanes

This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A300-600 series airplanes, that requires removal of the fuel level sensing amplifier (FLSA) of the trim tank system, modification of the polarization pin code in the electronics bay, and installation of a new, improved FLSA. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent continuous aft transfer of fuel due to the FLSA not supplying electrical power to the trim tank overflow sensor, which could result in potential loss of fuel during flight.