AD 99-15-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Alexander Schleicher GmbH & Co. | ASH 26E | Airworthiness Directives; Alexander Schleicher Segelflugzeugbau Model ASH 26E Sailplanes |
Unsafe Condition
Failure of the internal cooling system air fan caused by a certain design configuration of the impeller, which could cause the engine to overheat with 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 within 30 calendar days after the effective date. Replace the fan with one incorporating a black impeller (P/N R1K074) either before further flight if damage is found or within 9 calendar months if no damage is found, both in accordance with specified service documents.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 calendar days (inspection) and either before further flight or within 9 calendar months (replacement depending on inspection results).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Alexander Schleicher GmbH & Co. Model ASH 26E sailplanes, all serial numbers, equipped with an internal cooling system air fan that does not incorporate a black impeller (P/N R1K074).
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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