AD 99-09-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | MD-11 | Airworthiness Directives; McDonnell Douglas Model MD-11 Series Airplanes |
| aircraft | The Boeing Company | MD-11F | Airworthiness Directives; McDonnell Douglas Model MD-11 Series Airplanes |
Unsafe Condition
Improper installation of wires routing from main wire bundles to the aft main avionics rack (MAR) and associated brackets, clamps, braces, standoffs, or clips could cause chafing of the wire/wire bundles, resulting in electrical arcing, smoke, and possible fire in the MAR.
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Required Actions
Conduct a one-time inspection of the wiring and wire bundles of the aft MAR to detect damage, chafing, or misaligned rubber cushion inserts. Corrective actions include repairing damaged wiring, rerouting wires to prevent contact with adjacent components, installing silicone rubber coated glass cloth wrapping, and ensuring brackets/clamps are properly installed.
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Compliance Time
Within 60 days of the effective date (May 7, 1999)
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Affected Aircraft
McDonnell Douglas Model MD-11 and MD-11F airplanes
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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