AD 2008-08-25
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-400F and -400 | Airworthiness Directives; Boeing Model 747-400F and -400 Series Airplanes |
Unsafe Condition
Water accumulation in the dripshield above the M826 Card File can enter the card file, damaging circuit cards and causing the AFT CARGO FIRE MSG message to illuminate, leading to an air turn back. Failure of fuel system or fire detection circuit cards could result in loss of fuel management or false/no fire messages.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install drains and drain tubes in the dripshield above the M826 Card File to eliminate water accumulation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
Boeing Model 747-400F and -400 series airplanes with the specified configuration.
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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