What was found
FLT 906, STATION PVG, "IN FIGHT SHUTDOWN OF NR 1 ENGINE, NO OIL QTY, OR PRESSURE." ON CLIMB-OUT THROUGH FL 310, F/E NOTED OIL QTY DECREASING AND PRESS FLUX CONTACTED DISPATCH AND WAS DIRECTED TO RETURN TO PVG FOR MX. MX FOUND "NR 1 ENGINE GEAR BOX CHIP DETECTOR THREADED BORE THREADS DAMAGED." AIRCRAFT FERRY TO SINGAPORE FOR ENGINE CHANGE. REPLACED NR 1 ENGINE PER MM 72-00-00 AND ASSOC WORKCARDS.