As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RUDDER RATIO STATUS MESSAGE AND RUDDER RATIO SINGLE ADVISORY MESSAGE APPEARED DURING TRANSIT CHECK. CIRCUIT BREAKER FOR THE RUDDER RATIO CHANGER CONTROL WAS FOUND TO BE TRIPPED AND WOULD NOT RESET. FURTHER INVESTIGATION FOUND WIRES AND POSTS IN THE WIRE INTEGRATION UNIT (WIU) WERE FOUND BURNED.