Special Conditions: Robinson Helicopter Company Model R66 Helicopter; Flight Control System Annunciation of Control

What it does

• •Establishes special safety conditions for Skyryse's modification of Robinson Model R66 helicopters that replace mechanical flight controls with a digital fly-by-wire (FBW) system.
• •Requires the FBW system to display the commanded positions of primary flight controls and information about the system's operating state to the pilot.
• •Mandates that flight control functions, controls, indications, and alerts be designed to minimize pilot errors and confusion, with clear grouping and presentation of information visible under all expected lighting conditions.

Why it matters

• •Existing Federal Aviation Regulation 14 CFR Part 27, written in 1964 for mechanical flight control systems, does not address the safety standards needed for digital fly-by-wire technology, creating a regulatory gap.
• •The loss of tactile feedback that pilots normally receive from mechanical controls creates the need for enhanced annunciation and display requirements to maintain safety equivalency with traditional systems.
• •These special conditions establish the minimum safety standards necessary for the FAA to approve this novel design feature in the Robinson R66 helicopter.

Who is affected

• •Skyryse and Robinson Helicopter Company seeking approval for the modified Model R66 helicopter with digital fly-by-wire flight controls.
• •Pilots operating Robinson Model R66 helicopters equipped with the Skyryse FBW modification.
• •Any future applicants seeking to apply similar FBW modifications to other helicopter models on Robinson's Type Certificate No. R00015LA.

What happens next

These special conditions become effective September 11, 2026, and serve as part of the type certification basis that Skyryse must comply with to obtain approval of the supplemental type certificate.