Two‑axis digital autopilot built around the Flybox ACU and FX75 servos for precise, dependable control in Experimental and LSA aircraft. Compact, lightweight, and engineered for smooth integration into modern panels.
Core Components
• Autopilot Control Unit (ACU) — Central processor managing all flight‑control logic, mode selection, servo commands, and safety functions.
• FX75 Servos (x2) — High‑torque, fast‑response digital servos for pitch and roll control, optimized for light aircraft with adjustable override torque.
Flight Modes
• HDG / TRK — Holds a selected heading or GPS track.
• ALT — Maintains current altitude or climbs/descends to a selected altitude.
• NAV — Follows GOTO or full flight‑plan guidance from an external GPS.
Safety & Convenience
• Remote stick/yoke control for instant engage/disengage.
• Quick‑turn commands:
• Hold HDG/TRK → 180° left turn
• Hold NAV → 180° right turn
• Selectable vertical speed (Vs) for climb/descend profiles.
• Adjustable servo torque to match aircraft control feel.


