AD 2004-03-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-200C and -200F | Airworthiness Directives; Boeing Model 747-200C and -200F Series Airplanes |
Unsafe Condition
Fatigue cracking in the upper chord of the upper deck floor beams, which could extend and sever floor beams at a floor panel attachment hole location, leading to rapid decompression and loss of controllability.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the upper chord of the upper deck floor beams for fatigue cracking. Repair any identified cracking as necessary. For certain airplanes, an optional repair/modification is provided to extend repetitive inspection intervals.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the specified repetitive inspection intervals as outlined in the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 747-200C and -200F series airplanes, as specified in the AD.
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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