Airworthiness Directive · Amendment 39-14291 · BAE Systems (Operations) Limited Model ATP Airplanes and Model HS 748 Airplanes
BAE Systems (Operations) Limited Model ATP Airplanes and Model HS 748 Airplanes
This AD applies to all BAE Systems (Operations) Limited Model ATP airplanes and Model HS 748 series 2A and series 2B airplanes, certificated in any category.
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.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 48 hours after the effective date of this AD, do the actions specified in paragraphs (f)(1), (f)(2), and (f)(3) of this AD, in accordance with the Accomplishment Instructions of BAE Systems (Operations) Limited Alert Service Bulletin ATP-A28-021, Revision 1, dated September 26, 2002 (for Model ATP airplanes); or BAE Systems (Operations) Limited Alert Service Bulletin HS748-A28-44, dated September 26, 2002 (for Model HS 748 airplanes); as applicable.
(1) Do a detailed inspection of the cross feed drain pipe of the left and right wings between the fuel drain valve and the cross feed pipe for chafe damage. Before further flight, do any corrective action if applicable.
(2) Do a detailed inspection of the electrical cable between the terminal block and fuel boost pump of the left and right wings for chafe damage. Before further flight, do any corrective action if applicable.
(3) Do an inspection to determine the clearance between the cable loom and the cross feed drain pipe on the left and right wings. Before further flight, do any corrective action if applicable.
Although the service bulletin referenced in this AD specifies to submit certain information to the manufacturer, this AD does not include that requirement.
