As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED AUTOPILOT PORPOISES ON APPROACH +5 DEGREES UP -10 DOWN INTO CHO. CREW DIVERTED TO CRW AND LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED FLIGHT CONTROL PANEL PER THE AIRCRAFT MAINTENANCE MANUAL. AIRCRAFT WAS RELEASED FOR SERVICE.