AD Amdt-39-10744
Unsafe Condition
Failure of the pitot tube O-ring caused by an ineffective design, which could result in the pitot tube falling out and the sailplane pilot losing airspeed indications.
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Required Actions
Replace the O-ring installed in the mounting part of the pitot tube (in the propeller dome) with one of improved design.
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Compliance Time
Before further flight
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Affected Aircraft
Stemme GmbH & Co. KG Model S10 sailplanes with the specific O-ring in the pitot tube mounting part.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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