Airworthiness directives › 2014-03-07
AD 2014-03-07 Airworthiness Directives; The Boeing Company Airplanes
Models named: MD-11, MD-11F. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to The Boeing Company Model MD-11 and MD-11F airplanes, certificated in any category, as identified in Boeing Service Bulletin MD11-28-126, Revision 4, dated November 29, 2011.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
This paragraph restates the requirements of paragraph (g) of AD 2009-26-16, Amendment 39-16155 (74 FR 69249, December 31, 2009), with revised service information. For airplanes identified in Boeing Service Bulletin MD11-28-126, Revision 1, dated June 18, 2009: Within 60 months after February 4, 2010 (the effective date of AD 2009-26-16), do the actions specified in paragraphs (g)(1) through (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; or Boeing Service Bulletin MD11-28-126, Revision 4, dated November 29, 2011; except as required by paragraph (j) of this AD. After the effective date of this AD, only Boeing Service Bulletin MD11-28-126, Revision 4, dated November 29, 2011, may be used. Do all applicable corrective actions before further flight. (1) Do a general visual inspection of the wire bundles between Stations 1238.950 and 1361.000 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 between Stations 1218.950 and 1381.000. (3) Do a detailed inspection for damage (burn marks) of 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 a nonmetallic barrier/shield sleeving, new clamps, new attaching hardware, and a new extruded channel.
Unsafe condition
This AD was prompted by reports that identified additional locations where inspections and corrective actions of the center upper auxiliary fuel tank are needed. 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.
Affected ADs
This AD supersedes AD 2009-26-16, Amendment 39-16155 (74 FR 69249, December 31, 2009).
Read the original on the Federal Register →
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1