What was found
NR 2 ENGINE OIL PRESSURE LIGHT CAME ON. RETARDED THROTTLE, LIGHT STAYED ON. SHUT DOWN ENGINE AS PER ABNORMAL CHECKLIST, TIME 1430Z, OIL PRESSURE 24 PSI. REMOVED AND REPLACED MAIN OIL FILTER, OLD ONE FOUND NORMAL. PRECAUTIONARY REMOVED AND REPLACED DIFFERENTIAL OIL PRESSURE SW, PRESSURE LIGHT SW EINGINE RUN-UP OIL PRESSURE AND TEMP CHECKED NORMAL PER MM 79-20-7, 79-32-2 AND 79-33-1.