What was found
AFTER 30 MINUTES IN FLIGHT OIL TEMP CLIMBED TO YELLOW BAND DURING RED TAB PROCEDURES WITH ENGINE AT IDLE TEMP CLIMBED ABOVE RED BAND. SHUT DOWN NR 3 ENGINE IN ACCORDANCE WITH RED TABS. REMOVED AND REPLACED OIL TEMP BULB PER M/M 727-200 79-34-021-4, LEAK AND OPS CHECK NORM. AT IDLE ENG NEEDS TO BE RUN AT HIGH POWER. REMOVED AND REPLACED MAIN OIL SCREEN FOR WINDMILL PER M/M 79-00-000-3-1, LEAK CHECK O/K SCREEN FOUND CLEAN. REMOVED NR 3 ENGINE IN REFERENCE TO 727-200 ENGINE CHANGE NR 3 W/C 70T0001-03. OPS AND LEAK CHECK GOOD, OK FOR SERVICE.