What was found
THE ENGINE OIL SYSTEM WAS CONTAMINATED BY OIL FILTER SEAL DEBRIS. (K) ON DISASSEMBLY OF THE ENGINE RUBBER DEBRIS WAS FOUND: IN THE OIL PASSAGE THAT FEEDS THE STARTER ADAPTER WITH THE ADAPTER PILOT BEARING PLUGGED. UPON SPLITTING OF THE ENGINE CASE DEBRIS WAS FOUND IN THE OIL PASSAGE TO THE NR 3 MAIN BEARING. BOTH OIL COOLING JETS TO NR 3 MAIN BEARING WERE PLUGGED WITH RUBBER DEBRIS. THE RIGHT WAS PLUGGED WITH A PIECE .6250 INCH LONG AND THE LT WITH A PIECE .1875 INCH LONG. ONE PIECE OF RUBBER DEBRIS WAS LOCATED IN THE OIL PASSAGE TO THE NR 5 BEARING. (K)