Airworthiness Directives; Boeing Model 767 Series Airplanes

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 767 series airplanes. For certain airplanes this AD requires rework of the bonding jumper assemblies on the drain tube assemblies of the slat track housing of the wings. For certain other airplanes, this AD requires repetitive inspections of the drain tube assemblies of the slat track housing of the wings to find discrepancies, and corrective actions, if necessary. This AD also provides for terminating action for the repetitive inspections. These actions are necessary to find and fix discrepancies of the bonding jumper assemblies, which could result in an in-tank ignition source due to electrostatic discharge or lightning. The actions also are necessary to find and fix discrepancies of the slat track drain tubes, which could result in fuel migrating into the tubes and leaking onto an engine or exhaust nozzle, and consequent risk of a fire when the airplane is stationary or during low speed taxiing. This action is intended to address the identified unsafe conditions.