As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM: DUAL FMS FAILURE AUTO PILOT AND AUTOTHROTTLE FAIL EICAS MESSAGE AFTER 10 MINUTES FMS'S RESPONDED TO PROGRAMMING. CHECK EQUIPMENT COOLING IN COCKPIT AND E/E, TESTED BOTH FMC'S ALL CHECK GOOD PER AMM 34-61-00. ALL FMC DATA WAS CORRECT. ALSO, REMOVED AND REPLACED LEFT AND RIGHT FLT MANAGEMENT COMPUTERS PER AMM 34-61-01-424-005 AND CROSS LOADED PER AMM 34-61-00-422-053-001 FMC CHECKS GOOD.