What was found
MSP - FLT NR 1090 - ON CLIMB-OUT, PASSING THROUGH 10,000 FEET, NR 2 ENGINE LOP LIGHT ILLUMINATED ALONG WITH OIL QUANTITY AND OIL PRESSURE DECREASE TO ZERO. FLIGHT CREW SHUT DOWN NR 2 ENGINE AND RETURNED TO MSP WHERE LANDING WAS WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND THE NR 4 BEARING PRESSURE LINE LOOSE, TIGHTENED SAME. ALSO, FOUND NR 4 BEARING CHIP DETECTOR MISSING AND REPLACED CHIP DETECTOR. SERVICED OIL AND RAN ENGINE. OPS NORMAL. REPLACED ENGINE DUE TO LOW OIL PRESSURE OPERATION AND RETURNED AIRCRAFT TO SERVICE. (M)