AD 2012-26-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Burkhart GROB Luft- und Raumfahrt GmbH Sailplanes |
Unsafe Condition
Corrosion and/or cracking of the elevator control rod that could lead to failure of the elevator control rod with consequent loss of control.
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Required Actions
Inspect the elevator control rod in the vertical fin for corrosion or cracking following Grob Aircraft AG Service Bulletin No. MSB817-64/2. Replace the elevator control rod with an airworthy part if cracks or heavy corrosion are found. Clean the rod surface and apply a corrosion inhibitor if only slight or no corrosion is found.
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Compliance Time
Within 25 hours time-in-service (TIS) or 60 days after February 13, 2013, whichever occurs first, and repetitively thereafter at intervals not to exceed every 5 years.
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Affected Aircraft
Burkhart GROB Luft-und Raumfahrt GmbH Models GROB G 109 and GROB G 109B 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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