As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED AN UNCOMMANDED LEFT AUTOTHROTTLE DISCONNECT WITH EICAS MESSAGE FOUR HOURS INTO FLIGHT. THE FMC DUMPED ALL INFORMATION DURING APPROACH. MAINTENANCE TROUBLESHOT THE ISSUE AND FOUND THE LEFT AIMS CABINET INPUT-OUTPUT MODULE TO BE FAULTY. REMOVED AND REPLACED THE LEFT AIM MODULE IAW AMM 31-41-11. OPS TESTED NORMAL.