AD 98-06-37
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Alexander Schleicher GmbH & Co. | ASK 21 | Airworthiness Directives; Alexander Schleicher Segelflugzeugbau Model ASK-21 Sailplanes |
Unsafe Condition
The inability to release the tow rope because of the design of the tow release cable assembly, which could result in loss of control of the sailplane during towing operations.
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Required Actions
Replace any tow release cable assembly that does not have a swivel-type end with one that does have a swivel-type end in accordance with Alexander Schleicher Technical Note No. 10, dated October 10, 1983.
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Compliance Time
within the next 3 calendar months after the effective date of this AD, unless already accomplished
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Affected Aircraft
Alexander Schleicher GmbH & Co. Model ASK-21 sailplanes, serial numbers 21 001 through 21 196, equipped with a tow release cable assembly that does not have a swivel-type end.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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