AD 2024-04-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Wing anti-ice (WAI) valve failure that can result in undetected structural damage to leading edge (LE) slat assemblies, and separately a failure of the autothrottle (A/T) to disconnect after the pilot manually advanced the throttle levers, which caused a low-speed condition during a go-around. Additionally, insufficient low-speed protection and a determination that the flightcrew may not recognize and properly respond to a multi-channel unreliable airspeed event.
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Required Actions
Install certain new software and perform a software configuration check.
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Compliance Time
Within 36 months of the effective date (April 23, 2024).
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Affected Aircraft
The Boeing Company Model 777-200, 777-200LR, 777-300, 777-300ER, and 777F series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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