AD Amdt-39-10791
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-100 | Airworthiness Directives; Boeing Model 747-100 Series Airplanes |
Unsafe Condition
Fatigue cracking in the outer chord of the BS 1480 bulkhead at the overwing longeron splice and complete severing of the longeron splice fitting.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct repetitive inspections to detect cracking of the BS 1480 upper and lower bulkhead components, including outer chord, web, skin, splice components, and lower bulkhead/stringer interface. Repair or modify the skin splice plate, outer chord splice fitting, and stringer interface as necessary.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 747-100 series airplanes with the specific structural configuration as defined 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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