What was found
(CAN) PILOT REPORT THAT AFTER RH ENGINE START, OIL PRESSURE LOW. MAINTENANCE FOUND SMALL METAL CHIP UNDER OIL PRESSURE RELIEF VALVE SEAT. RELIEF VALVE & SEAT CLEANED AND ENGINE OIL PRESSURE CHECKED NORMAL ON GROUND RUN. FURTHER MAINTENANCE INSPECTION OF THE MAIN OIL FILTER ELEMENT & OIL INLET SCREEN REVEALED NUMEROUS FERROUS MATERIAL - SLIVERS, FLAKES - IN THE MAIN OIL FILTER ELEMENT & NUMEROUS FERROUS CHIPS IN THE OIL INLET SCREEN. ENGINE HAS BEEN REMOVED & SENT TO ENGINE VENDOR FOR METAL CONTAMINATION INSPECTION & REPAIR. NO FINDINGS REPORT AVAILABLE AT THIS TIME. SEP. 16, 2009 - ENGINE REPAIR AGENCY REPORTS SUBSTANTIAL METAL CONTAMINATION DAMAGE THROUGHOUT THE ENGINE - #2 & #4 CYLINDER TAPPETS, CAM SHAFT, ALL PISTON ROD BEARINGS, & OIL PUMP & HOUSING. THE ROOT CAUSE OF DAMAGE APPEARS TO BE THE FAILURE OF #2 CYLINDER EXHAUST TAPPET BODY P/N 72877. THE ENGINE IS CONSIDERED BEYOND ECONOMICAL REPAIR AND WILL BE REPLACED WITH NEW. (TC# 20090911004)