AD Amdt-39-9511
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-400 | Airworthiness Directives; Boeing Model 747-400 Series Airplanes |
Unsafe Condition
Chafing and shorting of the wiring of the engine fuel shutoff valves could result in the pilot's inability to shut off the supply of fuel in the event of an engine fire.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the fuel shutoff valve wire and sleeve with a wire in two non-metallic sleeves in the conduit in the struts of each engine.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 747-400 series airplanes subject to the existing AD requiring replacement of electrical wiring to the fuel shutoff valve.
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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