What was found
ENGINE WAS INDUCTED FOR MAINTENANCE MAY, 2001 FOR VIBRATION AND METAL CONTAMINATION OF THE OIL SYSTEM. TEARDOWN AND INSPECTION REVEALED A NR 6 BEARING FAILURE. A MORE DETAILED PIECE PART INSPECTION SHOWED NO OTHER DAMAGE ASSOCIATED WITH THIS DEFECT OF WHICH COULD HAVE CONTRIBUTED TO THE FAILURE THE ENGINE WAS DISASSEMBLED, CLEANED, REPAIRED FLUSHED AND REASSEMBLED IAW JT8 ENGINE MANUAL. THE ROOT CAUSE FOR THE NR 6 BEARING FAILURE IS UNDETERMINED. ENGINE RETURNED TO SERVICE. (M)