# Proposed AD FAA-2019-0664: Austro Engine GmbH Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-22-14
- Products: Austro Engine
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 23, 2019, 84 FR 56707
- Comments due: December 9, 2019
- Became: [AD 2020-22-14](https://openairdocs.org/ad/2020-22-14)
- Docket: FAA-2019-0664 (https://www.regulations.gov/docket/FAA-2019-0664, where comments are filed)
- FR document: 2019-23104
- Official PDF: https://openairdocs.org/files/sha256/8d/ae/8dae41460394b33a59ac331b7dd4dcb578161a6e0183e6fd4c64aa7260854fa7 (from https://www.govinfo.gov/content/pkg/FR-2019-10-23/pdf/2019-23104.pdf)
- Federal Register: https://www.federalregister.gov/documents/2019/10/23/2019-23104/airworthiness-directives-austro-engine-gmbh-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C9FE9129D68360768625849C004D2AD1.0001
- Page: https://openairdocs.org/proposed/FAA-2019-0664

## Summary

The FAA proposes to supersede airworthiness directive (AD) 2018-07-16 which applies to all Austro Engine GmbH model E4 and E4P diesel piston engines. AD 2018-07-16 requires initial and repetitive replacement of the waste gate controller and the control rod circlip. Since the FAA issued AD 2018-07-16, Austro Engine GmbH developed a modification of the waste gate control-rod fail-safe bridge and spring- loaded circlip that terminates the need for repetitive replacement of the waste gate controller and the control rod circlip. This proposed AD would retain the requirements of AD 2018-07-16 and requires engine modification by installing a waste gate control-rod fail-safe bridge and new spring-loaded circlip that terminates the initial and repetitive replacement requirements of AD 2018-07-16. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Oct 23, 2019: Notice of proposed rulemaking (NPRM). (first notice), FR document 2019-23104, comments due Dec 9, 2019 (https://www.federalregister.gov/documents/2019/10/23/2019-23104/airworthiness-directives-austro-engine-gmbh-engines)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.