AD 2012-10-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Burkhart GROB Luft- und Raumfahrt GmbH Powered Sailplanes |
Unsafe Condition
Excessive corrosion on the nose plate (part number 109-2160.01) in the vertical stabilizer, which could cause the vertical stabilizer nose plate to fail and result in loss of control of the sailplane.
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Required Actions
Inspect the nose plate from the top and bottom for corrosion and flaking within 3 months of the effective date and repetitively thereafter at intervals not exceeding 12 months. Install an access panel on the left side of the vertical stabilizer. Replace the nose plate with a serviceable part if corrosion or flaking is found during any inspection.
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Compliance Time
Within 3 months after July 9, 2012
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Affected Aircraft
Burkhart GROB Luft- und Raumfahrt GmbH Models GROB G 109 and GROB G 109B powered sailplanes, all serial numbers, 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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