AD 2009-14-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 | Airworthiness Directives; Boeing Model 747 Airplanes |
Unsafe Condition
Wear damage and cracks in the fuselage skin at the interface area of the vertical stabilizer seal and fuselage skin in sections 46 and 48, 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
Conduct repetitive inspections for wear damage and cracks of the fuselage skin in the interface area of the vertical stabilizer seal and fuselage skin. Perform a detailed inspection for wear damage and cracks of the surface of any skin repair doubler in the area. Take 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 take corrective actions if necessary.
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Compliance Time
Within 9,000 flight hours after the effective date of this AD, or within 20,000 flight hours from delivery, or within 20,000 flight hours after the last application of Teflon-filled coating, whichever occurs later.
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Affected Aircraft
Boeing 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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