What was found
ON CLIMB, NR 3 ENGINE OIL TEMP INCREASED INTO THE YELLOW BAND WHERE IT PROCEEDED TO FLUCTUATE BETWEEN THE YELLOW AND GREEN BAND. ON DESCENT, THE OIL TEMP INCREASED AND REMAINED INTO THE HIGH RANGE OF THE YELLOW BAND. INITIATED PRECAUTIONARY ENGINE SHUTDOWN. FOUND CONNECTOR PLUG ON NR 3 TEMP BULB LOOSE. REMOVED AND REPLACED NR 3 OIL TEMP BULB AND RESECURED CONNECTOR PLUG. IDLE RUN LEAK CHECK GOOD. HIGH POWER RUN CHECKED GOOD. NO FURTHER DEFECTS NOTED, NR 4 BEARING INDICATOR NORMAL. (M)