What was found
CREW REPORTED ON TAKEOFF ABOUT 7000 FEET, “HYD1 LO QTY” MSG ILLUMINATED ON EICAS. LOOKED AT HYDRAULIC PAGE, AND QUANTITY WAS DECREASING RAPIDLY. THEN “HYD1 PUMP FAIL” MSG ILLUMINATED. HEARD THE GEAR DOOR OPEN. RETURNED TO THE FIELD. CORR ACTION MX REMOVED DAMAGED RH NOSE GEAR DOOR ACTUATOR HYD HOSE ASSY PN OFF: 123-03011-401, NSN. INSTALLED SERVICEABLE RH NOSE GEAR DOOR ACTUATOR HYD HOSE ASSY PN ON : 123-03011-401, NSN. LEAK CHECK PERFORMED. OPS CHECK GOOD.