What was found
THERE IS AN EXHAUST ELBOW THAT COMES OFF THE WASTEGATE AND RETURNS TO THE TAILPIPE. THIS PIPE HAD WORN NEARLY THROUGH AT THE SLIP JOINT BETWEEN IT AND THE TAIL PIPE. THE TAIL PIPE WAS WORN TO A SHARP EDGE WHERE THE ELBOW ENTERS THE SLIP JOINT. THIS CONDITION WAS NOT VISIBLE UNTIL THE TAILPIPE WAS REMOVED. PROBABLE CAUSE IT THE VIBRATION BETWEEN THE TWO PIPES. THE TAILPIPE NEEDS TO BE REMOVED EVERY 200 HOURS TO INSPECT THIS JOINT FOR DAMAGE. UNDETECTED, THIS EXHAUST PIPE WOULD HAVE FAILED IN A FEW MORE HOURS. THIS FAILURE COULD HAVE CAUSED AN INFLIGHT FIRE AND POSSIBLE LOSS OF LIFE.