AD 2011-12-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company Model MD-90-30 | Airworthiness Directives; The Boeing Company Model MD-90-30 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 cracked front spar web and front spar cap bolt holes in the vertical stabilizer.
AI-generated summary from the source AD text. Verify against the official source before acting.
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 and either the aft flanges or side skins of the vertical stabilizer. Inspect for loose and missing fasteners. Take investigative and corrective actions as necessary.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 4,100 flight cycles after the effective date of the AD.
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Affected Aircraft
The Boeing Company Model MD-90-30 airplanes, certificated in any category, as identified in Boeing Alert Service Bulletin MD90-55A014, dated June 24, 2010.
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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