AD 2009-13-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McDonnell Douglas | MD-90-30 | Airworthiness Directives; McDonnell Douglas Model MD-90-30 Airplanes |
Unsafe Condition
Cracks found in the right upper aft skin panel of the horizontal stabilizer at the aft inboard corner, which may not be able to sustain limit load, potentially leading to loss of overall structural integrity of the horizontal stabilizer.
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Required Actions
Perform repetitive eddy current inspections for cracks of the upper aft skin panels on the left and right sides of the horizontal stabilizer, and take all applicable related investigative and corrective actions as specified in Boeing Alert Service Bulletin MD90-55A012. Repair any cracks found before further flight using an approved method.
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Compliance Time
Within the compliance times specified in Boeing Alert Service Bulletin MD90-55A012, or within the specified compliance time after the effective date of this AD if later.
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Affected Aircraft
All McDonnell Douglas Model MD-90-30 airplanes, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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