As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NEITHER CAPTAIN NOR F/O'S AUTOPILOT WILL CAPTURE AND FOLLOW THE COMMAND BARS, NOR WILL IT CAPTURE AN ALTITUDE. REMOVED AND REPLACED APP-65A AUTOPILOT CONTROL PANEL AND REPLACED ELEVATOR SERVO IAW EMB 120 MM 22-10-04. OPS CHECK GOOD. SERVO P/N: 622-5734-002, S/N OFF: 8426.