AD 2023-12-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
The FAA determined that radio altimeters cannot be relied upon to perform their intended function if they experience 5G C-Band interference, and a determination that, during landings, as a result of this interference, certain airplane systems may not properly transition from AIR to GROUND mode when landing on certain runways, resulting in a longer landing distance than normal due to the effect on thrust reverser deployment, speedbrake deployment, and increased idle thrust.
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Required Actions
Revising the limitations section of the existing AFM to incorporate limitations prohibiting certain landings and the use of certain MEL items, and retaining the operating procedures from AD 2022-02-16 for calculating landing distances, due to the presence of 5G C-Band interference.
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Compliance Time
Before June 30, 2023
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Affected Aircraft
The Boeing Company Model 787-8, 787-9, and 787-10 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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