Airworthiness Directives; The Boeing Company Model 767-200, -300, -300F, and -400ER Series Airplanes

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The FAA proposes to supersede an existing airworthiness directive (AD) that applies to certain Model 767-200, -300, -300F, and -400ER series airplanes. The existing AD currently requires an inspection to determine if certain motor operated valve actuators for the fuel tanks are installed, and related investigative and corrective actions if necessary. This proposed AD would add airplanes and, for certain airplanes, require additional inspections to determine if certain motor operated valve actuators for the fuel tanks are installed, and related investigative and corrective actions if necessary. This proposed AD results from fuel system reviews conducted by the manufacturer. We are proposing this AD to prevent an ignition source inside the fuel tanks, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.