As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROX 30 MIN AFTER ENGINE START-R HYD SYS QTY EICAS MSG. SELECTED STATUS PAGE AND RT HYD QTY SHOWED .05. S/O RT PRIMARY AND DEMAND PUMP OFF. FOUND ENG HYD PUMP PRESS HOSE WORN THROUGH. HOSE WAS RUBBING BRACKET BOLT HEAD JUST BELOW TOP GANG CLAMP. REPLACED LINE AND REPOSITION TO PREVENT RUBBING, REF IPC 29-11-51-10 ITEM 255.