Airworthiness Directives; BAE Systems (Operations) Limited Model ATP Airplanes and Model HS 748 Airplanes

The FAA is adopting a new airworthiness directive (AD) for all BAE Systems (Operations) Limited Model ATP airplanes and Model HS 748 airplanes. This AD requires doing a detailed inspection of the drain pipes of the fuel cross feed system and certain electrical cables for chafe damage; doing an inspection to determine the clearance between the cable loom and the cross feed drain pipe; and doing corrective actions if necessary. This AD results from a fire in the dry area of the wing due to severe chafe damage between an electrical cable and the fuel cross feed drain pipe. We are issuing this AD to prevent chafe damage of the electrical cable and fuel cross feed drain pipe that could lead to fuel leakage from the drain pipe and an ignition source from the electrical cable, which could result in a fire in the dry area of the airplane wing.