AD Amdt-39-11106
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 | Airworthiness Directives; Boeing Model 747 Series Airplanes |
Unsafe Condition
Discrepancies in center fuel tank wiring and components, as well as potential ignition sources in the center fuel tank, could lead to fire or explosion.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect center fuel tank wiring and components for discrepancies and take corrective action if necessary. Conduct a one-time electrical bonding test of center fuel tank components and rework if necessary. For certain airplanes, perform a one-time insulation resistance test and inspect wiring and components of the fuel quantity indication system (FQIS) for discrepancies, taking corrective actions if necessary. Replace certain FQIS probes with newer probes, perform system adjustment and operational test, and install a flame arrestor on the inlet line of the center fuel tank scavenge 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, as specified in the AD, with certain serial numbers and configurations.
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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