What was found
DURING A PHASE INSPECTION, SOME METAL WAS FOUND IN THE FILTER, TOOK OIL SAMPLE FROM OIL COOLER, REMOVED SUCTION SCREEN, MORE METAL WAS FOUND, SENT FILTER AND OIL TO LAB FOR ANALYSIS, SENT METAL FROM SCREEN, WAS ADVISED THAT THE SCREEN MATERIAL WAS FROM BEARINGS, REMOVED ENGINE FROM SERVICE. THIS IS THE 2ND ENGINE FROM THIS AREA WITH THIS PROBLEM. THIS AIRCRAFT HAS BEEN ON A PHASE INSPECTION PROGRAM SINCE NEW, WITH OIL CHANGES EVERY 50 HRS.