AD 2001-21-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 | Airworthiness Directives; Boeing Model 747 Series Airplanes |
Unsafe Condition
Wear or damage of the inlet check valves and inlet adapters of the override/jettison pumps could result in a fire or explosion in the fuel tank during dry (no fuel) operation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Revising the Airplane Flight Manual for certain airplanes and rework of certain components to end the repetitive inspection requirement for wear or damage of the inlet check valves and inlet adapters of the override/jettison pumps.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 3 years of the effective date (December 4, 2001).
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Affected Aircraft
All Boeing Model 747 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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