# Airworthiness Directives; Diamond Aircraft Industries GmbH Airplanes
> **Rule** · Final rule; request for comments · Published 2017-05-31 · Effective 2017-05-31 · 82 FR 24843
## Document
- **Document number:** 2017-11127
- **Category:** airworthiness
- **Manufacturer:** Diamond
- **Type:** Rule
- **Action:** Final rule; request for comments
- **Citation:** 82 FR 24843
- **Publication date:** 2017-05-31
- **Effective date:** 2017-05-31
- **FAA docket:** Docket No. FAA-2017-0506
## Abstract

We are adopting a new airworthiness directive (AD) for Diamond Aircraft Industries GmbH Model DA 42 airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as failure of the propeller regulating valve caused by hot exhaust gases coming from fractured engine exhaust pipes. We are issuing this AD to require actions to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/05/31/2017-11127/airworthiness-directives-diamond-aircraft-industries-gmbh-airplanes)
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