# Proposed AD FAA-2017-1138: Austro Engine GmbH Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2018-18-02
- Products: Austro Engine
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 1, 2018, 83 FR 25410
- Comments due: July 16, 2018
- Became: [AD 2018-18-02](https://openairdocs.org/ad/2018-18-02)
- Docket: FAA-2017-1138 (https://www.regulations.gov/docket/FAA-2017-1138, where comments are filed)
- FR document: 2018-11378
- Official PDF: https://openairdocs.org/files/sha256/fa/2e/fa2ed75579e0476e843aa96bf2ad2c56a4e5ebe247249cecaca67999b07ac400 (from https://www.govinfo.gov/content/pkg/FR-2018-06-01/pdf/2018-11378.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/06/01/2018-11378/airworthiness-directives-austro-engine-gmbh-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D1491C10977C36E28625829F00497F03.0001
- Page: https://openairdocs.org/proposed/FAA-2017-1138

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Austro Engine GmbH model E4 engines and for all model E4P engines. This proposed AD was prompted by reports of considerable wear on the timing chain on these engines. This proposed AD would require replacement of the timing chain and amending certain airplane flight manuals to limit use of windmill restarts. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jun 1, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-11378, comments due Jul 16, 2018 (https://www.federalregister.gov/documents/2018/06/01/2018-11378/airworthiness-directives-austro-engine-gmbh-engines)

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