AD Amdt-39-10407
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-400 | Airworthiness Directives; Boeing Model 747-400 Series Airplanes |
Unsafe Condition
Inadequate clearance between the galley power feeder wiring and passenger oxygen system tubing could result in a fire in the ceiling area above the door 4 galley due to chafing of wiring on oxygen system tubing.
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Required Actions
Inspect the separation between the galley power feeder and static ground wiring and adjacent passenger oxygen system tubing in the forward ceiling area above the door 4 galley. Reroute wiring and install clamps and sleeves if necessary.
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Compliance Time
Before further flight
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Affected Aircraft
Boeing Model 747-400 series airplanes with certain configurations requiring the specified wiring and oxygen system tubing arrangement.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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