Airworthiness Directives; Boeing Model 767 Airplanes

We are adopting a new airworthiness directive (AD) for all Boeing Model 767 airplanes. This AD requires installing an automatic shutoff system for the auxiliary fuel tank override/jettison fuel pumps (also referred to as center tank fuel pumps in the airplane flight manual (AFM)), revising the AFM to advise the flightcrew of certain operating restrictions for airplanes equipped with an automatic auxiliary fuel tank pump shutoff control, and, for certain airplanes, installing a placard to alert the flightcrew of certain fuel usage restrictions. This AD provides optional terminating actions for certain requirements. This AD results from a design review of the fuel tank systems. We are issuing this AD to prevent an overheat condition outside the center tank fuel pump explosion-resistance area that is open to the pump inlet, which could cause an ignition source for the fuel vapors in the fuel tank and result in fuel tank explosions and consequent loss of the airplane.