What was found
DURING FLIGHT, NR 1 ENGINE OIL QUANTITY DROPPED TO 1.2 GAL, OIL PRESSURE TO 47 PSI, AND OIL TEMP AT 101 DEG. SHUT DOWN ENGINE AS PRECAUTIONARY AND LANDED WITHOUT INCIDENT. REMOVED AND REPLACED NR 1 ENGINE, OPS CHECKED GOOD PER MM CH 71-00-00.