As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GARMIN GSA28 ROLL SERVO FAILED AFTER APPROXIMATELY THREE MONTHS / 20 HOURS IN SERVICE . FLIGHT INSTRUMENTATION DISPLAYED A “SERVO HARDWARE FAULT” MESSAGE AND THE AUTOPILOT BECAME INOPERATIVE. THE SERVO DISPLAYED A “RED” STATUS LIGHT INDICATING FAILURE.