As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GARMIN GSA28 PITCH TRIM SERVO FAILED AFTER APPROXIMATELY ELEVEN MONTHS / 45 HOURS IN SERVICE. FLIGHT INSTRUMENTATION DISPLAYED “AFCS PREFLIGHT TEST FAILED” AND “SERVO HARDWARE FAULT” MESSAGES AND THE AUTOPILOT BECAME INOPERATIVE. THE SERVO DISPLAYED A “RED” STATUS LIGHT INDICATING FAILURE.