AD 2004-23-21
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McDonnell Douglas | Various | Airworthiness Directives; McDonnell Douglas Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Airplanes; and Model MD-88 Airplanes |
Unsafe Condition
Chafing of the power feeder cables of the auxiliary power unit (APU), which could result in electrical arcing to adjacent structure and consequent fire in the airplane.
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Required Actions
Inspect for chafing of the power feeder cables of the APU and repair if necessary. Replace the support bracket located on the left side of the lower cargo compartment with a new 'U' shaped bracket.
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Compliance Time
Before further flight
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Affected Aircraft
McDonnell Douglas Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and Model MD-88 airplanes, as listed in McDonnell Douglas Alert Service Bulletin MD80-24A105, Revision 02, dated January 24, 2000.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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