Airworthiness Directive · Amendment 39-12020 · McDonnell Douglas Model MD-11 Series Airplanes
McDonnell Douglas Model MD-11 Series Airplanes
Superseded. A later AD replaced this one: AD 2002-14-11. Comply with the one in force.
Model MD-11 series airplanes, as listed in McDonnell Douglas Alert Service Bulletin MD11-24A138, dated April 3, 2000; certificated in any category.
Note 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (b) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.
This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model MD-11 series airplanes, that requires replacing the ground support bracket(s); and rerouting the ground cables of the galley external power and main external power, or ground cables of the main external power; as applicable. This action is necessary to prevent arcing and heat damage to the attachment points of the main external and galley power receptacle ground wire, insulation blankets outboard and aft of the receptacle area, and adjacent power cables, which could result in smoke and fire in the forward cargo compartment. This action is intended to address the identified unsafe condition.
To prevent arcing and heat damage to the attachment points of the main external and galley power receptacle ground wire, insulation blankets outboard and aft of the receptacle area, and adjacent power cables, which could result in smoke and fire in the forward cargo compartment, accomplish the following:
(a) Within 12 months after the effective date of this AD, accomplish the actions specified in paragraph (a)(1) or (a)(2) of this AD, as applicable, in accordance with McDonnell Douglas Alert Service Bulletin MD11-24A138, dated April 3, 2000.
(1) For Group 1 airplanes listed in the service bulletin: Replace the ground support brackets with new brackets and reroute the ground cables of the galley external power and main external power.
(2) For Group 2 airplanes listed in the service bulletin: Replace the ground support bracket and reroute the ground cables of the main external power.
