AD Amdt-39-10435
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 | Airworthiness Directives; Boeing Model 747 Series Airplanes |
Unsafe Condition
Fatigue cracks in internal skin doublers above main entry door 1 at body station 460 could result in reduced structural integrity of the fuselage and consequent rapid depressurization of the cabin.
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Required Actions
Perform an internal visual inspection for cracks of the skin and internal doublers above main entry door 1 at body station 460. Take follow-on actions as specified to detect and correct fatigue cracking.
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Compliance Time
Before further flight
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Affected Aircraft
Boeing Model 747 series airplanes with the specific fuselage structure at body station 460 requiring the inspection.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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