Airworthiness Directive · Amendment 39-16155 · Fuel
McDonnell Douglas Corporation Model MD-11 and MD-11F Airplanes
Superseded. A later AD replaced this one: AD 2014-03-07. Comply with the one in force.
This AD applies to McDonnell Douglas Corporation Model MD-11 and MD-11F airplanes; certificated in any category; as identified in Boeing Service Bulletin MD11-28-126, Revision 1, dated June 18, 2009.
Note 1: Boeing Information Notice MD11-28-126 IN 02, dated July 1, 2009, provides guidance that clarifies the airplane groups identified in Boeing Service Bulletin MD11-28-126, Revision 1, dated June 18, 2009.
We are adopting a new airworthiness directive (AD) for certain Model MD-11 and MD-11F airplanes. This AD requires a one-time inspection to determine if wires touch the upper surface of the center upper auxiliary fuel tank and marking the location, if necessary; a one-time inspection of all wire bundles above the center upper auxiliary fuel tank for splices and damage; a one-time inspection for damage to the fuel vapor barrier seal and upper surface of the center upper auxiliary fuel tank; and corrective actions, if necessary. This AD also requires installation of nonmetallic barrier/shield sleeving, new clamps, new attaching hardware, and a new extruded channel. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to reduce the potential of ignition sources inside fuel tanks, which, in combination with flammable fuel vapors, could result in fuel tank explosions and consequent loss of the airplane.
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 60 months after the effective date of this AD: Do the actions specified in paragraphs (g)(1), (g)(2), (g)(3), (g)(4), and (g)(5) of this AD, and do all applicable corrective actions, in accordance with the Accomplishment Instructions of Boeing Service Bulletin MD11-28-126, Revision 1, dated June 18, 2009, except as required by paragraph (h) of this AD. Do all applicable corrective actions before further flight.
(1) Do a general visual inspection to determine if wires touch the upper surface of the center upper auxiliary fuel tank, and mark the location, as applicable.
(2) Do a detailed inspection for splices and damage of all wire bundles above the center upper auxiliary fuel tank.
(3) Do a detailed inspection for damage (burn marks) on the upper surface of the center upper auxiliary fuel tank.
(4) Do a detailed inspection for damage (burn marks) on the fuel vapor barrier seal.
(5) Install nonmetallic barrier/shield sleeving, new clamps, new attaching hardware, and a new extruded channel.
(h) If damage (burn marks) is found on the upper surface of the center upper auxiliary fuel tank during any inspection required by paragraph (g)(3) of this AD, and Boeing Service Bulletin MD11-28-126, Revision 1, dated June 18, 2009, specifies to contact The Boeing Company for repair instructions: Before further flight, repair the auxiliary fuel tank using a method approved in accordance with the procedures specified in paragraph (j)(3) of this AD.
(i) Actions accomplished before the effective date of this AD according to Boeing Service Bulletin MD11-28-126, dated March 3, 2009, are considered acceptable for compliance with the corresponding actions specified in this AD.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
