AD 2011-14-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company Model 747-400 and -400D | Airworthiness Directives; The Boeing Company Model 747-400 and -400D Series Airplanes |
Unsafe Condition
Chafing of the main fuel feed tube and the alternating current motor-driven hydraulic pump wire bundle, which could lead to arcing from the exposed wire to the fuel feed tube, and could result in a fire or explosion.
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Required Actions
A general visual inspection is required to determine the routing of the wire bundles in the number two and number three engine pylons near the leading edge. Related investigative and corrective actions are required if necessary. For certain airplanes, concurrent actions are also required.
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Compliance Time
Before further flight
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Affected Aircraft
The Boeing Company Model 747-400 and -400D Series Airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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