AD 2008-11-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 757 | Airworthiness Directives; Boeing Model 757 Airplanes |
Unsafe Condition
Continuous low pressure in the center tank fuel pump operation could lead to friction sparks or overheating in the fuel pump inlet, creating a potential ignition source inside the center fuel tank. This, combined with flammable fuel vapors, could result in a center fuel tank explosion and consequent loss of the airplane.
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Required Actions
Install an automatic shutoff system for the center tank fuel boost pumps. Install a placard in the airplane flight deck if necessary. Revise the Limitations and Normal Procedures sections of the airplane flight manual to advise the flightcrew of operating restrictions. Revise the Airworthiness Limitations (AWLs) section of the Instructions for Continued Airworthiness to incorporate AWLs No. 28-AWL-20 and No. 28-AWL-26. Replace the fuel control panel assembly with a modified part. Install two secondary pump control relays for the center tank fuel pumps. Perform other specified actions and concurrently modify the fuel control panel assembly.
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Compliance Time
Not specified in the provided text.
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Affected Aircraft
All Boeing Model 757 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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