As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHL - FLT 894 - EN ROUTE PHL-FRA, THE CREW RECEIVED THE EICAS MESSAGE R HYD SYSTEM MAINTENANCE. SUBSEQUENTLY, ALSO RECEIVED THE EICAS MESSAGED LDG GEAR MONITOR AND EICAS DISAGREE. THE FLIGHT RETURNED TO PHL AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE RAN THE RIGHT ENIGNE AND COULD NOT DUPLICATE THE HYDRAULIC PROBLEM. THE LEFT EICAS COMPUTER WAS REPLACED. (M)