AD 2014-06-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Alexander Schleicher, Segelflugzeugbau Gliders |
Unsafe Condition
Inadequate guidance for spin training operations, including potential for single-seated flight with forgotten spin ballast installed, leading to sailplane operation beyond its center of gravity limits and reduced safety margins during spin maneuvers.
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Required Actions
Amend the Aircraft Flight Manual (AFM) and Instructions for Continued Airworthiness (ICA) to include adequate guidance for spin training operations. Install a cockpit placard as specified in the relevant Technical Note.
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Compliance Time
Within 30 days after May 8, 2014
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Affected Aircraft
Alexander Schleicher, Segelflugzeugbau Model ASK 21 gliders, all serial numbers, certificated in any category, that have incorporated Alexander Schleicher Segelflugzeugbau ASK 21 Technical Note No. 4 (dated November 14, 1980) or Technical Note 4a (dated November 25, 2004).
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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