AD 2008-24-51
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 737-600 | Airworthiness Directives; Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes |
Unsafe Condition
Incorrect wiring in the autoshutoff system causes the left-hand fuel pump of the center wing tank to re-energize when the flightcrew manually turns off the pump switches, leading to extended dry-running of the fuel pump and potential localized overheating inside the fuel pump, which could produce an ignition source inside the fuel tank.
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Required Actions
Accomplish a wiring test of the autoshutoff system to verify continuity and visually verify that the wiring is correctly installed. Perform corrective actions if necessary. Conduct a functional test of the autoshutoff system and applicable maintenance actions as specified in Chapter 28, Section 28-22 of the Boeing 737-600/700/800/900 Fault Isolation Manual.
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Compliance Time
Before further flight
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Affected Aircraft
Boeing Model 737-600, -700, -700C, -800, and -900 series airplanes on which an autoshutoff system was installed in accordance with Boeing Alert Service Bulletin 737-28A1206.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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