What was found
THE DEFECT WAS FOUND DURING A REGULAR INSPECTION. UPON VISUAL INSPECTION THROUGH THE EXHAUST DUCTS, NOTED THE INNER SECTION DUCT ASSY PN 3106820-01 HAD SPLIT, BROKE UP AND CURLED UP. THE END OF THIS CURLED UP METAL PIECE OF THE DUCT HAD COME IN CONTACT WITH THE POWER TURBINE, THEREFORE, DESTROYING ALL THE POWER TURBINE BLADES. THE BLADES WERE CUT THROUGH EXACTLY THE SAME WAY. THE DEEPEST CUT ON EACH BLADE WAS ALMOST ONE-THIRD OF THE WAY THROUGH. THE LENGTH OF THE DAMAGE ON EACH BLADE WAS ALMOST 1.50 INCHES LONG. SUBMITTER STATED CATASTROPHIC ENGINE FAILURE WAS POSSIBLE.