# Airworthiness Directives; BRP-Rotax GmbH & Co KG Engines
> **Rule** · Final rule. · Published 2019-06-05 · Effective 2019-07-10 · 84 FR 25984
## Document
- **Document number:** 2019-11739
- **Category:** airworthiness
- **Manufacturer:** BRP-Rotax GmbH & Co KG
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 84 FR 25984
- **Publication date:** 2019-06-05
- **Effective date:** 2019-07-10
- **FAA docket:** Docket No. FAA-2018-0916
## Abstract

We are adopting a new airworthiness directive (AD) for certain BRP-Rotax GmbH & Co KG (Rotax) 912 and 914 model engines. This AD was prompted by power loss and engine revolutions per minute (RPM) drop on certain Rotax 912 and 914 model engines due to a quality control deficiency in the manufacturing process of certain valve push-rod assemblies resulting in partial wear on the rocker arm ball socket and possible malfunction of the valve. This AD requires one-time inspection and, depending on the findings, replacement of the affected parts with parts eligible for installation. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/06/05/2019-11739/airworthiness-directives-brp-rotax-gmbh-and-co-kg-engines)
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