# Airworthiness Directives; Alexander Schleicher GmbH & Co. Segelflugzeugbau Gliders
> **Rule** · Final rule. · Published 2017-12-14 · Effective 2018-01-18 · 82 FR 58713
## Document
- **Document number:** 2017-26620
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 82 FR 58713
- **Publication date:** 2017-12-14
- **Effective date:** 2018-01-18
- **FAA docket:** Docket No. FAA-2017-0911
## Abstract

We are adopting a new airworthiness directive (AD) for all Alexander Schleicher GmbH & Co. Segelflugzeugbau Models ASH 25M and ASH 26E gliders. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as fatigue cracks found on the exhaust silencer. 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/2017/12/14/2017-26620/airworthiness-directives-alexander-schleicher-gmbh-and-co-segelflugzeugbau-gliders)
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