What was found
DURING ROUTINE 150-HOUR ENGINE INSPECTION, FOUND CHIP DETECTOR COVERED WITH FINE SLIVERS OF METAL. INSPECTION OF OIL FILTER REVEALED 4 TO 20 MG OF CARBON STEEL AND COPPER. THIS COMBINATION OF METALS IS THE MAKE-UP OF A 'LOW' QUALITY ENGINE BEARING. ACCESSORY GEARBOX WAS OPENED WHICH REVEALED THE FORWARD STARTER SPUR GEAR SHAFT BEARING HAD FAILED. POWERPLANT WAS RETURNED TO SERVICE FOLLOWING REPLACEMENT OF BEARING AND FLUSHING OF OIL TANK AND LINES.