What was found
T-3 DISK REMOVED FROM ENGINE. THE T-3 DISK EXPERIENCED A FATIGUE CRACK AND MATERIAL FAILURE. THE CRACK APPEARS TO HAVE ORIGINATED ON THE FRONT OF THE DISK ABOUT HALF WTH WAY UP THE FIR TREE BLADE MOUNT ANEE AT THE ADJACENT BLADE MOUNT. WHEN THE MATERIAL FAILED THERE WAS NOT ENOUGH FIR TREE MOUNT TO SECURE THE T-3 BLADE IN POSITION. THE T-3 BLADE WAS LIBERATED AND CAUSED EXTENSIVE DAMAGE TO THE LOW PRESSURE TURBINE. THE T-3 DISK AND BLADE ASSY IS BEING HELD AS A POTENTIAL EXHIBIT.