AD 2021-17-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Austro | Engine GmbH | Airworthiness Directives; Austro Engine GmbH Engines |
Unsafe Condition
An occurrence was reported of oil pressure loss on an E4 engine. Subsequent investigation determined that a certain batch of oil pumps was produced with a dimensional deviation on the inner gear/shaft. The inner gear/shaft of those pumps may come into contact with the pump housing, which might create debris and cause jamming of the oil pump.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Removing the affected oil pump from service and replacing it with a part eligible for installation.
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Compliance Time
Before further flight
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Affected Aircraft
Austro Engine GmbH E4 and E4P model diesel piston engines
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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