AD Amdt-39-10492

final rule
Data completeness: 70%

Airworthiness Directives; Lockheed Model L-1011-385 Series Airplanes

AD Number
Amdt-39-10492
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 98-NM-125-AD
FR Citation
63 FR 20062

Applicability

TypeManufacturerModelDetails
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.

AI-generated summary from the source AD text. Verify against the official source before acting.

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.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Before further flight

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Lockheed Model L-1011-385 series airplanes

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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