AD 2014-20-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Phase 3 display units (DUs) exhibit susceptibility to radio frequency emissions in WiFi frequency bands at radiated power levels below certification requirements, potentially leading to loss of flight-critical information displayed to the flightcrew during critical phases of flight.
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Required Actions
Replace existing phase 3 DUs with phase 1, phase 2, or phase 3A DUs. For certain replacement DUs, install new DU database software. Inspect to determine if phase 3 DUs are installed; if none are installed, no further action is necessary.
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Compliance Time
Before further flight
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Affected Aircraft
The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes, and Model 777 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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