AD 87-10-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Alexander Schleicher GmbH & Co. | ASK 21 | Airworthiness Directives; ALEXANDER SCHLEICHER: Model ASK 21 Gliders |
Unsafe Condition
Failure of the rudder pedal support fitting P/N 99.000.2173 could result in the glider becoming uncontrollable.
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Required Actions
Within 10 hours time-in-service after the effective date, visually inspect the rudder pedal support fitting P/N 99.000.2173 using a 10 power or greater magnifying glass for cracks. If cracks are found, replace the fitting with P/N 99.000.2174 before further flight. Prior to July 15, 1987, replace any unaffected fittings with P/N 99.000.2174.
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Compliance Time
Within the next 10 hours time-in-service after the effective date unless compliance with paragraph (c) has been accomplished, and prior to July 15, 1987.
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Affected Aircraft
Alexander Schleicher GmbH & Co. Model ASK 21 gliders serial numbers 21001 through 21312.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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