AD Amdt-39-11125
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 | Airworthiness Directives; Boeing Model 747 Series Airplanes |
Unsafe Condition
Potential failures within the electrical motor assembly of the APU fuel boost pump, which could result in fuel leakage from the electrical connector or electrical arcing across the connector pins, leading to a fuel fire.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the auxiliary power unit (APU) fuel boost pump with a serviceable pump.
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
Boeing Model 747 series airplanes with APU fuel boost pumps installed as part of the design review and analysis conducted during an accident investigation.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.