As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT, THE CREW RECEIVED A RUDDER SYS 1-2 INOP MESSAGE ON EICAS. THE QRH WAS FOLLOWED AND THE MESSAGE CLEARED AND AS A RESULT THE CREW RECEIVED AUTO-PILOT AND YAW DAMPER FAIL MESSAGES ON EICAS. THE CREW REDUCED ALTITUDE DUE TO NOW BEING NON-RVSM AND AS A RESULT HAD TO DIVERT TO LIT WHERE THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE RESET THE SYSTEM IT WAS OPS CHECKING GOOD IAW FIM 27-22-00. THE AIRCRAFT WAS THEN FUELED AND CONTINUED TO STL.