AD 2013-26-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Wear damage and cracks of the fuselage skin in the interface area of the vertical stabilizer seal and fuselage skin, which could cause in-flight depressurization of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect for wear damage and cracks of the fuselage skin in the interface area of the vertical stabilizer seal and fuselage skin, and perform corrective actions if necessary. For airplanes with blended fuselage skin, conduct repetitive external detailed inspections or high frequency eddy current inspections for cracks in the blended area, and perform corrective actions if necessary.
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Compliance Time
Within the specified repetitive inspection interval, which is reduced compared to the previous AD.
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Affected Aircraft
The Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SR, and 747SP 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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