# Airworthiness Directives; Stemme GmbH & Co. KG Model S10-V Sailplanes
> **Rule** · Final rule. · Published 1998-07-23 · Effective 1998-09-15 · 63 FR 39484
## Document
- **Document number:** 98-19459
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 63 FR 39484
- **Publication date:** 1998-07-23
- **Effective date:** 1998-09-15
- **FAA docket:** Docket No. 97-CE-128-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that applies to certain Stemme GmbH & Co. KG (Stemme) Model S10-V sailplanes. This AD requires replacing the propeller blade suspension forks with parts of improved design. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Germany. The actions specified by this AD are intended to prevent propeller suspension fork failure caused by design deficiency, which could result in loss of a propeller blade and loss of sailplane controllability.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/07/23/98-19459/airworthiness-directives-stemme-gmbh-and-co-kg-model-s10-v-sailplanes)
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