AD Amdt-39-11234
Unsafe Condition
Failure of the internal cooling system air fan caused by a certain design configuration of the impeller, which could lead to engine overheating and possible engine failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the internal cooling air fan for damage. Replace any fan that does not incorporate a black impeller with a fan that incorporates a black impeller, either immediately or at a specified time period based on the inspection results.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within a specified time period based on the results of the inspection, or immediately if damage is found.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Alexander Schleicher Segelflugzeugbau Model ASH 26E sailplanes.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.