As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED: PILOT REPORTS TWICE DURING FLIGHT AT CRUZE, BOTH MCDU'S WENT INTO MENU SCREEN, ALL FMC RIGHT DATA WAS LOST AND THE AIRCRAFT WENT INTO CONTROL WHEEL STEERING. VTK MESSAGE APPEARED ON CA.S ND. ALL RETURNED TO NORMAL IN 30 SEC. PERFORMED DFCS TEST IAW AMM 22-11-00. ALL TESTS PASS, NO FAULTS.