As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CRUISE THE PILOTS SELECTED THE AUTOPILOT ON. THE PLANE WOULD NOT HOLD THE HEADING SELECTED. MAINTENANCE CARRIED OUT AN INSPECTION ON THE AUTOPILOT SYS SUSPECTING THE ROLL SERVO TO BE BURNED OUT. THEY FOUND THE CABLE TO THE SERVO TO BE SNAPPED. THIS WILL REMAIN OPEN UNTIL WE HAVE MORE INFORMATION AS TO THE NATURE OF THE BREAK.