What was found
RECEIVED A LEVEL 2 FUEL QTY/USED CHK CAUTION, 1 HOUR INTO FLIGHT DESCENDING THROUGH FL340, ON ARRIVAL. COMPLIED WITH QRH, DECLARED EMERGENCY AND LANDED. CONFIRMED A FUEL LEAK FROM THE NR 1 ENGINE. FUEL SOV CLOSED ON THE NR 3 ENG AFTER SHUTDOWN. R & R THE PUMP TO FUEL CONTROL TUBE AND GASKETS IAW MM 73-12-01-4-1. LEAK CHECKED GOOD. OK FOR SERVICE.