# Airworthiness Directives; Austro Engine GmbH Engines
> **Rule** · Final rule. · Published 2013-07-17 · Effective 2013-08-21 · 78 FR 42677
## Document
- **Document number:** 2013-16951
- **Category:** airworthiness
- **Manufacturer:** Austro
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 78 FR 42677
- **Publication date:** 2013-07-17
- **Effective date:** 2013-08-21
- **FAA docket:** Docket No. FAA-2013-0164
## Abstract

We are adopting a new airworthiness directive (AD) for all Austro Engine GmbH model E4 engines. This AD requires removing from service certain part number waste gate controllers. This AD was prompted by several reports of power loss events due to fracture of the waste gate controller lever. We are issuing this AD to prevent engine power loss or in-flight shutdown, which could result in loss of control and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/07/17/2013-16951/airworthiness-directives-austro-engine-gmbh-engines)
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