As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROXIMATELY 2.5 HOURS AFTER TAKEOFF, RECIEVED AN FMC LIGHT WITH SINGLE FMC OPERATION IN SCRATCHPAD. LATER RIGHT ND WENT BLANK WITH MAP AND VTK FLAGS. ACCOMPLISHED QRH AND SET FMC SWITCH TO "BOTH ON LT AND RT FMC, BEARING /DIST INFO ON POS: SHIFT PAGE 3/3 DID NOT RETURN. ACFT GROUNDED. MOVED SWITCH BACK TO NORMAL POSITION. RT FMC OPS NORMAL, IAW AMM 34-61-00.