As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FIRST THIRD OF FLIGHT, RIGHT FMC FAILED 10 MINUTES LATER, LEFT FMC FAILED. DUAL OPS RESTORED TWO MINUTES LATER THEN ONE HOUR LATER EXPERIENCED DUAL FMC FAILURE QRH FOLLOWED AND DUAL OPERATIONS RESTORED. NORMAL OPS FOR REMAINDER OF FLIGHT. GROUNDED - YES. R/H FMC REQUIRED A RE-SYNC. REBOOTED R/H FMC REF B737-800 AMM 34-61 TASK 807 BITE TEST OF L/H & R/H FMC'S OK.