AD Amdt-39-11082
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-400 | Airworthiness Directives; Boeing Model 747-400, -400D, and -400F Series Airplanes |
Unsafe Condition
In-flight loss of cabin pressurization control due to a single failure of the auxiliary power unit (APU) battery.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify the P212 and P213 panels of the cabin pressure control system. For certain airplanes, also modify the P5, P6, and P7 panels, and the W4701, W4703, and W4908 wire bundles, as applicable.
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Compliance Time
Before further flight.
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Affected Aircraft
Boeing Model 747-400, -400D, and -400F series airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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