AD Amdt-39-10695
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 | Airworthiness Directives; Boeing Model 747 Series Airplanes |
Unsafe Condition
Excessive wear of inlet adapters of override/jettison pumps allows contact between the inlet check valve and inducer, which could result in fire or explosion in the fuel tank during dry operation.
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Required Actions
Revise the Airplane Flight Manual to advise flightcrew of limitations on dry operation of the override/jettison pumps. Inspect inlet check valves and inlet adapters for wear or damage, and replace with new or serviceable parts if necessary.
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Compliance Time
Before further flight
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Affected Aircraft
Boeing Model 747 series airplanes
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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