What was found
DURING CRUISE EICAS MSG HYD QTY LOW. FOLLOWED QRH PROCEDURE, FLUID LOSS STOPPED AT ENG DRIVEN & DEMAND PUMPS ONE OFF. ON BASE LEG ENG & DEMAND PUMPS ONE WERE TURNED ON IAW QRH PROCEDURE AFTER GEAR & FLAPS DOWN QTY CONTINUED TO DROP. NOSE WHEEL & BODY GEAR STEERING WORKED TO SHUT DOWN. QTY AT SHUTDOWN WAS .02, FOUND HYD SYS NR 1 PRESS LINE TO C ELEVATOR AUTOPILOT SERVO LEAKING DUE TO PIN HOLE & CRACK. R & R LINE PN 272U4800-123 WITH FLEX HOSE ASSEMBLY IAW GMM 3.27.1 & AMM 20-11-05. SERVICED NR 1 SYS IAW AMM 12-17-01. PERFORMED HYD SYS PRESS LEAK CHECK & FILTER INSPECTION IAW AMM 29-11-07 & SYS 1 OPERATIONS CHECKED OK. AREA CLEANED A AUTOPILOT ELEVATOR SERVO. OPERATIONS CHECKED OK IAW AMM 22-15-01.