AD 71-17-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | K & L Soaring LLC | SGS 1-23H | Airworthiness Directives; Schweizer Model SGS 1-23H Glider |
| aircraft | K & L Soaring LLC | SGS 1-23H-15 | Airworthiness Directives; Schweizer Model SGS 1-23H Glider |
Unsafe Condition
Excessively loose rudder fittings can cause severe oscillations and vibrations.
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Required Actions
Inspect lower and upper rudder and fin hinges (P/N 1A-107-2, P/N 23H704-16 & -17, P/N 1A-105-2, P/N 23H705-21) to ensure free-play does not exceed 0.005 inches. Replace hinges and bolts with same part numbers or FAA-approved equivalents if limits are exceeded, or incorporate Schweizer SB No. 102-23-2 or equivalent modification approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.
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Compliance Time
Within the next 25 hours time in service unless accomplished within the last 75 hours time in service and thereafter at intervals not to exceed 100 hours time in service
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Affected Aircraft
Schweizer Model SGS 1-23H Gliders
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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