As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN)OPERATOR REPORTED A POWER TURBINE RUB. THE CAUSE OF THE PT TIP RUB WAS A CRACK IN THE 2ND STAGE PT STATOR ON THE FRONT FLANGE. THIS STATOR WAS PRE-SB 20952, THEREFORE DID NOT HAVE THE EXTRA STRENGTHEN ING WELD AROUND THE FRONT FLANGE.