What was found
"TANK 2 PUMP OFF" FOLLOWED BY " NR 2 CROSSFEED" ABOUT 1 HOUR INTO FLIGHT. NR 2 QTY INDICATED ALMOST 5000 POUNDS LESS THAN 1 AND 3. FOLLOWED QRH AND IN MANUAL ALL QUANTITIES DROPPED AT A CONSISTENT RATE. NR 2 QUANTITY VARIED FROM 1,800 TO 10,000. GROUND CREW CONFIRMED LEAK AFTER INSPECTION. FOUND TWO LEAKING FASTNERS AT LOWER SURFACE OF RT WING. CLEANED AND SEALED AREA IN RT TIP FUEL TANK FWD OF AFT SPAR, BOTH SIDES OF RIB IAW AMM 28-11-01-2 LEAK CHECKED GOOD.