# Airworthiness Directives; Stemme GmbH & Co. KG Model S10 Sailplanes
> **Rule** · Final rule; request for comments. · Published 1998-11-23 · Effective 1998-12-09 · 63 FR 64600
## Document
- **Document number:** 98-30895
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 63 FR 64600
- **Publication date:** 1998-11-23
- **Effective date:** 1998-12-09
- **FAA docket:** Docket No. 98-CE-103-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that applies to certain Stemme GmbH & Co. KG (Stemme) Model S10 sailplanes. This AD requires replacing the flap drive rocker, part number (P/N) 10SW-RMW, with a modified flap drive rocker. 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 failure of the flap drive rocker caused by the design of the original part, which could result in loss of lateral control and wing flap control with consequent reduced and/or loss of sailplane control.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/11/23/98-30895/airworthiness-directives-stemme-gmbh-and-co-kg-model-s10-sailplanes)
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