As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RUDDER RATIO LIGHT ILLUMINATED IN FLIGHT. EICAS MESSAGE RUDDER RATIO DISPLAYED, CREW DECIDED TO RETURN TO EDR. ACCOMPLISHED FIM 27-09-00, WAS REPLACED RUDDER RATIO CHANGER ACTUATOR IAW AMM 27-21-13 PAGE 209, TEST OK IAW AMM 27-21-00 PAGE 501.