AD 2000-04-17
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-100 | Airworthiness Directives; Boeing Model 747-100, -200, and -300 Series Airplanes |
Unsafe Condition
Fatigue cracking in the upper deck floor beams located at body stations 340, 360, and 380, which could lead to failure of these components and result in rapid decompression and reduced controllability of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the upper deck floor beams at body stations 340, 360, and 380 for fatigue cracking, including at multiple fastener hole locations. Repair any detected cracking as necessary.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours after the effective date of the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 747-100, -200, and -300 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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