AD 2008-13-22
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-400 | Airworthiness Directives; Boeing Model 747-400, 747-400D, and 747-400F Series Airplanes |
Unsafe Condition
Failure of all three electronic flight instrument system/engine indicating and crew alerting system (EFIS/EICAS) interface units (EIUs) could result in the loss of all six integrated display units (IDUs) on the flight deck panels, leading to the inability of the flightcrew to maintain safe flight and landing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace one EFIS/EICAS interface unit (EIU) located on the E2-6 shelf of the main equipment center with a new or modified EIU. Ensure at least one of the three EIUs is part number (P/N) 622-8589-105, and the other two can be either P/N 622-8589-104 or P/N 622-8589-105.
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Compliance Time
Within 24 months of the effective date (August 6, 2008).
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Affected Aircraft
Boeing Model 747-400, 747-400D, and 747-400F series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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