AD 92-01-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 757-200 Series | Airworthiness Directives; BOEING Model 757 Series Airplanes |
| aircraft | The Boeing Company | 757-200CB Series | Airworthiness Directives; BOEING Model 757 Series Airplanes |
| aircraft | The Boeing Company | 757-200PF Series | Airworthiness Directives; BOEING Model 757 Series Airplanes |
| aircraft | The Boeing Company | 757-300 Series | Airworthiness Directives; BOEING Model 757 Series Airplanes |
Unsafe Condition
The fuel crossfeed valve and fuel shutoff valves may not close fully due to incorrect installation, which could result in fuel leakage or inability to isolate fuel tanks, leading to reduced fuel system reliability and potential flight hazards.
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Required Actions
Inspect or functionally test the fuel crossfeed valve and fuel shutoff valves to ensure correct installation per Boeing Service Letter 757-SL-28-8-A. If incorrectly installed, remove and reinstall correctly before further flight. Submit a report within 30 days of the inspection/test. Alternative compliance may be approved by the FAA Manager, Seattle Aircraft Certification Office.
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Compliance Time
within the next 3,000 hours time-in-service after the effective date of this AD, unless previously accomplished
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Affected Aircraft
Boeing Model 757 series airplanes as listed in Boeing Service Letter 757-SL-28-8-A dated June 5, 1991, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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