As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT THE CREW REPORTED THE AIRCRAFT PITCHING UP AND DOWN WHILE ON THE GLIDESLOPE. FLIGHT LANDED UNEVENTFULLY AND PASSENGERS DEPLANED NORMALLY. THE AUTOPILOT COMPUTER WAS FOUND TO BE INOPERATIVE AND WAS REPLACED. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE.