What was found
DURING CRUISE, AFTER TAKEOFF 2 HRS, PILOT FOUND THE FUEL QTY INDICATION DROP 7000 KG/HR ABNORMAL, CHECKED, FND FUEL DUMP FROM L WING TIP, PILOT CLOSE ALL 4EA CROSSFEED VALVE, THEN NO MORE FUEL OVERBOARD. AC DIVERTED FOR CHECKING AND REFUELING, AFTER, BACK TO HOME BASE, MAINT FOUND THE NR 2 FUEL BOOST PUMP DISCHARGE CHECK VALVE HOUSING HAD FRACTURED.