What was found
(CAN) SEVERAL CHIP LIGHTS WERE EXPERIENCED DURING OPERATION WHICH PROMPTED THE REMOVALOF ENGINE. MAGNETIC PARTICLES WERE NOTED ON THE UPPER GEARBOX CHIP DETECTOR. UPON FLUSHING THE TURBINE NR 8 BEARING AREA FERROUS PARTICLES AND SILVER FLAKES WERE FOUND. UPON DISASSEMBLY, THE TURBINE AFT LABYRINTH STATIONARY SEAL WAS FOUND TO HAVE ITS SILVER PLATED ID SEPARATED AS A RING. THE ROTATING SEAL WAS NOTED TO HAVE THE OIL SLINGER MACHINED OFF FROM CONTACT WEAR. THE FAILURE AND ASSOCIATED REPAIR PROCESSES FOR THIS PART ARE UNDER REVIEW.