As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI OUT R HYD SYSTEM PRESSURE AND BRAKE SOURCE EICAS LIGHT ILLUMINATED AND R SYS PRESS OVERHEAD LIGHT ILLUMINATED ALL BRAKE PRESSURE INDICATE NORMAL. FOUND RT HYD SYS OVER SERVICED. DRAINED RT HYD SYS TO PROPER LEVEL. REMOVED AND REPLACED RT HYD SYS PRESSURE SWITCH S32 PER AMM LEAK CHK GOOD RT HYD PRESSURE LIGHT AND SYS NOW CHK NML.