AD 2005-13-20
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-400 | Airworthiness Directives; Boeing Model 747-400, -400D, -400F; 767-200, -300, -300F; and 777-200 and -300 Series Airplanes |
Unsafe Condition
A certain combination of conditions could cause the fuel spar shutoff valves to remain partially open, potentially leaving the fuel spar shutoff valve in a partially open position when the engine fire switch is activated.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install a jumper wire between the wiring of the fire extinguisher switch and the fuel shutoff switch for each engine, and perform other specified actions as outlined in the AD.
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Compliance Time
Before further flight
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Affected Aircraft
Boeing Model 747-400, -400D, -400F series airplanes, line numbers 1 through 1276; Model 767-200, -300, -300F series airplanes, line numbers 1 through 850; and Model 777-200 and -300 series airplanes, line numbers 1 through 360, certificated in any category.
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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