AD Amdt-39-10492
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed | L-1011-385 | Airworthiness Directives; Lockheed Model L-1011-385 Series Airplanes |
Unsafe Condition
Internal electrical failures in the fuel boost pump of the wing fuel tanks could result in electrical arcing or localized overheating, which could breach the protective housing and expose the pump to fuel vapors and fumes, leading to potential fire or explosion.
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Required Actions
Revise the Airplane Flight Manual (AFM) to prohibit fuel boost pump operation at low fuel quantities and add maintenance procedures for inoperative systems. Install a placard on the engineer's fuel panel prohibiting boost pump operation when less than 1,200 pounds of fuel are in the corresponding wing tank.
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Compliance Time
Before further flight
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Affected Aircraft
Lockheed Model L-1011-385 series airplanes
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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