# Special Conditions: Skyryse, Robinson Helicopter Company Model R66 Helicopter; Flight Control System Annunciation of Control
> **Rule** · Final special conditions. · Published 2026-08-12 · Effective 2026-09-11 · 91 FR 52002
## Document
- **Document number:** 2026-16412
- **Category:** other
- **Type:** Rule
- **Action:** Final special conditions.
- **Citation:** 91 FR 52002
- **Publication date:** 2026-08-12
- **Effective date:** 2026-09-11
- **FAA docket:** Docket No. FAA-2025-5245
## Abstract

These special conditions are issued for the Robinson Helicopter Company (Robinson) Model R66 helicopter. This helicopter, as modified by Skyryse, will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for normal category helicopters. This design feature replaces the mechanical flight controls with a digital fly-by-wire (FBW) system. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2026/08/12/2026-16412/special-conditions-skyryse-robinson-helicopter-company-model-r66-helicopter-flight-control-system)
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