# Airworthiness Directives; DG Flugzeugbau GmbH Models DG-500MB, DG-808C and DG-800B Gliders
> **Rule** · Final rule; request for comments. · Published 2009-12-01 · Effective 2009-12-21 · 74 FR 62689
## Document
- **Document number:** E9-28455
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 74 FR 62689
- **Publication date:** 2009-12-01
- **Effective date:** 2009-12-21
- **FAA docket:** Docket No. FAA-2009-1103
## Abstract

We are adopting a new airworthiness directive (AD) for the products listed above. 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:

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2009/12/01/E9-28455/airworthiness-directives-dg-flugzeugbau-gmbh-models-dg-500mb-dg-808c-and-dg-800b-gliders)
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