Regulacje i polityka gospodarcza · 12/12/2006

Airworthiness Directives; McDonnell Douglas Model MD-11F Airplanes

The FAA is adopting a new airworthiness directive (AD) for certain McDonnell Douglas Model MD-11F airplanes. This AD requires a general visual inspection for installation of conduit and chafing damage on the auxiliary power unit (APU) power feeder wires and the upper surface of the auxiliary fuel tank and repair if necessary. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to detect and correct unprotected APU power feeder wires that come into close proximity to the upper surface of the auxiliary "piggy back" fuel tank, which could result in a potential ignition source, and in combination with flammable fuel vapors, could cause a fuel tank explosion and consequent loss of the airplane.