AD 2011-06-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company Model MD-90-30 | Airworthiness Directives; The Boeing Company Model MD-90-30 Airplanes |
Unsafe Condition
Cracking of the left and right upper center skin panels of the horizontal stabilizer, specifically at the aft inboard corner, which might ultimately lead to the loss of overall structural integrity of the horizontal stabilizer.
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Required Actions
Perform eddy current inspections to detect cracking of the left and right upper center skin panels of the horizontal stabilizer. If no crack is found, repeat inspections at specified intervals. If a crack is found, replace the skin panel with a serviceable one before further flight.
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Compliance Time
Within 3,778 flight cycles after the effective date of this AD or before the accumulation of 20,000 total flight cycles, whichever occurs later.
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Affected Aircraft
The Boeing Company Model MD-90-30 airplanes, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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