# Airworthiness Directives; GROB Aircraft AG Gliders
> **Rule** · Final rule. · Published 2017-04-26 · Effective 2017-05-31 · 82 FR 19185
## Document
- **Document number:** 2017-07936
- **Category:** airworthiness
- **Manufacturer:** GROB
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 82 FR 19185
- **Publication date:** 2017-04-26
- **Effective date:** 2017-05-31
- **FAA docket:** Docket No. FAA-2017-0019
## Abstract

We are adopting a new airworthiness directive (AD) for GROB Aircraft AG Models GROB G 109 and GROB G 109B 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 broken pivots of the tail wheel mounting bracket resulting from corrosion and damage due to wear. 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/2017/04/26/2017-07936/airworthiness-directives-grob-aircraft-ag-gliders)
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