As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT APPROX 1 HOUR OF FLIGHT CENTER HYD QTY EICAS MSG DISPLAYED. PUMPS SELECTED OFF IAW PROCEDURE STOPPED FLUID LOSS AT .40. UPON INSPECTION, FOUND DPI FOR ADP PRESS MODULE LOOSE WITH A CUT O-RING. REPLACED O-RING, NO LEAKS NOTED. SERVICED CTR HYDRAULIC QUANTITY TO FULL. (M)