AD 2005-06-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-100 | Airworthiness Directives; Boeing Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-300, 747SP, and 747SR Series Airplanes |
Unsafe Condition
Fatigue cracking of the upper chord of certain upper deck floor beams, which could extend and sever floor beams adjacent to the body frame, resulting in rapid depressurization and loss of controllability of the airplane.
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Required Actions
Inspect fastener holes inboard of the body frame on certain upper deck floor beams that were not previously inspected. Inspect for cracking in certain upper deck floor beams. Take corrective actions if necessary. Revise instructions for repairs and post-modification/repair inspections.
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Compliance Time
Within 12 months of the effective date (April 25, 2005).
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Affected Aircraft
Boeing Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-300, 747SP, and 747SR series airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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