What was found
ENG 2 HYD LOW PRESS LT WAS FIRST INDICATION OF LOSSZOF ALL QTY I N SYS B. CREW REPORTED THAT FIRST INDICATION WAS ENGINE 2 HYDRAULIC ENGINE DRIVEN PUMP LOW PRESSURE LIGHT ON. CREW RAN QRH SHUT DOWN NUMBER 2 EDP THEN RAN ALTERNATE PROCEDURES. WHEN CREW COMPLETED QRH THEY FOUND SYSTEM B HYDRAULIC RESERVOIR WAS AT 0. CREW REPORTED THAT NUMBER2 ELECTRIC DRIVEN PUMP WAS ON FOR SOMETIME AFTER RESERVOIR WAS EMPTY. ATTEMPTED TO FILL HYD SYST B RESERVOIR BY HAND PUMP METHOD. FLUID STARTED LEAKING FROM ENG 2 FWD DRAIN MAST. CLOSED ENG 2 PYLON VALVES WITH FIRE HANDLE IN FLIGHT DECK. TAGGED FIRE HANDLE WITH LOTO TAG