ACU (Autopilot Control Unit)

Central processor of the Flybox two-axis digital autopilot, managing all flight-control logic, mode selection, servo commands, and safety functions.

• 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
• Remote stick/yoke control for instant engage/disengage, quick-turn commands, selectable vertical speed, adjustable servo torque