AD 2011-15-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Various | Airworthiness Directives; The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes |
Unsafe Condition
Reports of cracked vertical stabilizer skin, a severed front spar cap, elongated fastener holes at the leading edge of the vertical stabilizer, and a cracked front spar web and front spar cap bolt holes in the vertical stabilizer.
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Required Actions
Perform a detailed inspection for distress and existing repairs to the leading edge structure of the vertical stabilizer at the splice at Station Zfs = 52.267. Conduct repetitive inspections for cracking in the front spar cap forward flanges of the vertical stabilizer, and either the aft flanges or side skins. Perform repetitive inspections for loose and missing fasteners. Take related investigative and corrective actions if necessary.
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Compliance Time
Within 4,500 flight cycles after the effective date of this AD.
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Affected Aircraft
The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 airplanes, certificated in any category, as identified in Boeing Alert Service Bulletin MD80-55A067, dated June 24, 2010.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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