As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RUDDER RATIO EICAS MSG AFTER BLOCK OUT. AIRCRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE. MAINTENANCE RESET RUDDER RATIO MODULES AND TESTED RUDDER IAW B767 FIM 27-21 FT 804 OPS CHECKED GOOD NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.