As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE GOT A "VTK" FLAG ON CAPT MAP DISPLAY FOLLOWED BY "MAP" FLAG. RAN FMC FAIL QRH CHECKLIST. APPEARS TO HAVE RESTORED L-FMC. GROUNDED - YES. BITE CHECK OF LT FMC REF FIM 34-61 TASK 801. IN-FLIGHT FAULT OF "LT PGM FAULT - INTERMITTENT". PERFORMED FIM 34-61 TASK 836. LT FMC OPS NML. 1 EA C/B ON P18-2 OPENED, THEN RESET A6. ETOPS GND VERIFICATION TEST SUCCESSFUL.