AD 98-06-38
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Alexander Schleicher GmbH & Co. | ASK 21 | Airworthiness Directives; Alexander Schleicher Segelflugzeugbau Model ASK-21 Sailplanes |
Unsafe Condition
Failure of the elevator pushrod caused by corrosion damage, which could result in loss of control of the sailplane.
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Required Actions
Drill a drainage hole in the elevator pushrod, inspect the elevator pushrod for corrosion damage, replace the elevator pushrod if corrosion exceeds specified limits, and apply a corrosion agent as described in the service bulletin.
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Compliance Time
Within the next 3 calendar months after the effective date of this AD (April 28, 1998).
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Affected Aircraft
Alexander Schleicher GmbH & Co. Model ASK-21 sailplanes, serial numbers 21 001 through 21 205, that do not have an automatic elevator connection installed in accordance with Technical Note No. 11.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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