As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AIRCRAFT OPERATION THE CREW REPORTED OSCILLATIONS WITH THE AUTOPILOT SYSTEM ENGAGED. THE AUTOPILOT COMPUTER WAS FOUND TO BE FAULTY AND WAS REPLACED. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND THE AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE.