# Proposed AD FAA-2012-0885: Thielert Aircraft Engines GmbH Models TAE 125-02-99 and TAE 125-02-114 Reciprocating Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-26-12
- Products: Thielert Aircraft Engines
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 31, 2012, 77 FR 53154
- Comments due: October 30, 2012
- Became: [AD 2012-26-12](https://openairdocs.org/ad/2012-26-12)
- Docket: FAA-2012-0885 (https://www.regulations.gov/docket/FAA-2012-0885, where comments are filed)
- Project: 2012-NE-18-AD
- FR document: 2012-21524
- Official PDF: https://openairdocs.org/files/sha256/e1/3b/e13bc97941186a0c4a2005a0a8f866df5f32b5d614b1fbe4a881df4163d8fc8c (from https://www.govinfo.gov/content/pkg/FR-2012-08-31/pdf/2012-21524.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/08/31/2012-21524/airworthiness-directives-thielert-aircraft-engines-gmbh-models-tae-125-02-99-and-tae-125-02-114
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/84A155D63C587E6886257A6B0044A950.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0885

## Summary

We propose to adopt a new airworthiness directive (AD) for all TAE 125-02-99 and TAE 125-02-114 reciprocating engines. This proposed AD was prompted by an in-flight shutdown of an airplane equipped with a TAE 125-02-99 engine. This proposed AD would require inspection of the oil filler plug vent hole at the next scheduled maintenance or within 110 flight hours after the effective date of this AD. If chips are found to be blocking the vent hole, additional corrective action is required before next flight. We are proposing this AD to prevent engine in-flight shutdown or power loss, possibly resulting in reduced control of the airplane.

## Notices in this docket

- Aug 31, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-21524, comments due Oct 30, 2012 (https://www.federalregister.gov/documents/2012/08/31/2012-21524/airworthiness-directives-thielert-aircraft-engines-gmbh-models-tae-125-02-99-and-tae-125-02-114)

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