# Proposed AD FAA-2014-0179: Technify Motors GmbH Reciprocating Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2014-17-03
- Products: Technify Motors
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 23, 2014, 79 FR 29693
- Comments due: July 22, 2014
- Became: [AD 2014-17-03](https://openairdocs.org/ad/2014-17-03)
- Docket: FAA-2014-0179 (https://www.regulations.gov/docket/FAA-2014-0179, where comments are filed)
- Project: 2014-NE-03-AD
- FR document: 2014-11983
- Official PDF: https://openairdocs.org/files/sha256/6a/7e/6a7e830d42bcaf815cc130b0f482e00c42e61035f9a3656ee5153586dd00cfa2 (from https://www.govinfo.gov/content/pkg/FR-2014-05-23/pdf/2014-11983.pdf)
- Federal Register: https://www.federalregister.gov/documents/2014/05/23/2014-11983/airworthiness-directives-technify-motors-gmbh-reciprocating-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EE2B38F0F94B0A9886257CE100433B81.0001
- Page: https://openairdocs.org/proposed/FAA-2014-0179

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Technify Motors GmbH (type certificate previously held by Thielert Aircraft Engines GmbH) TAE 125-02-99 and TAE 125-02-114 reciprocating engines. This proposed AD was prompted by in-flight shutdowns on airplanes with TAE 125-02 engines. This proposed AD would require removal of each high-pressure (HP) fuel pump before 300 flight hours (FHs) in service or within 55 FHs after the effective date of the AD, whichever occurs later. We are proposing this AD to prevent failure of the HP fuel pump, which could result in damage to the engine and damage to the airplane.

## Notices in this docket

- May 23, 2014: Notice of proposed rulemaking (NPRM). (first notice), FR document 2014-11983, comments due Jul 22, 2014 (https://www.federalregister.gov/documents/2014/05/23/2014-11983/airworthiness-directives-technify-motors-gmbh-reciprocating-engines)

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