As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED RIGHT HYD SYSTEM PRESS LIGHT ILLUMINATED, WITH RIGHTT HYD SYS PRESS EICAS MSG. ALSO RIGHTT HYD DEMAND PUMP LOW PRESS LIGHT ILLUMINATED IN AUTO. SWITCHED TO "ON", NO HELP. RIGHT ENGINE HYD PUMP LOW PRESS LIGHT NEVER ILLUMINATED. RIGHT HYD QTY REMAINED NORMAL AT .96. PER QRH, TURNED OFF RIGHT EDP AND ACMP. TURNED RIGHT EDP DURING CONF WITH TOMC, HYD PRESS RESTORED CONTINUED. REPLACED RIGHT SYSTEM ACMP.