AD 2008-09-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 757 | Airworthiness Directives; Boeing Model 757 Airplanes and Model 767-200, 767-300, and 767-300F Series Airplanes |
Unsafe Condition
An error in the operating program software (OPS) of the engine indication and crew alerting system (EICAS) prevents the display of an advisory message for a left engine fuel filter contamination and imminent bypass condition, which may indicate an imminent multiple engine thrust loss or engine malfunction event due to fuel contamination.
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Required Actions
Revise the Limitations section of the airplane flight manual to advise the flight crew of procedures to detect a fuel filter impending bypass condition due to gross fuel contamination in a timely manner.
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Compliance Time
Before further flight
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Affected Aircraft
All Boeing Model 757 airplanes and Model 767-200, 767-300, and 767-300F series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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