Installed in the aft fuselage to control the elevators.
A proper installation ensures precise flight tracking, smooth servo engagement, and long-term hardware reliability. This comprehensive guide breaks down the essential technical phases, wiring configurations, and calibration steps typically detailed in the official S-TEC 55X installation documentation. 1. Pre-Installation Planning and Airframe Compatibility S-tec 55x Installation Manual
Ensure the yoke-mounted Autopilot Disconnect (AP DISC) switch instantly breaks power to the servo clutches under all flight regimes. Installed in the aft fuselage to control the elevators
The System 55X relies on a distributed architecture of sensors, servos, and indicators working in unison. 1. Programmer/Computer (Panel Mount) the servos receive exactly zero volts
With the aircraft perfectly level on the ground and the controls centered, the installer must perform a "null adjustment." This ensures that when the autopilot commands zero movement, the servos receive exactly zero volts, preventing the system from drifting or creeping on its own. 6. Ground Testing and Pre-Flight Checks
Requires a dedicated, trip-free, resettable circuit breaker (typically 5-amp).
Install the roll servo and pitch servo using the appropriate STC bracket kits.