As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE TROUBLESHOOTING AN ENGINE THAT WAS RUNNING HOTTER THAN NORMAL, WE PRFORMED A HOT SECTION INSPECTION AND FOUND THE 1ST STAGE NOZZLE CRACKED 90 DEGREES AROUND THE INNER RIM. IF THE CRACK HAD NOT BEEN FOUND, A TURBINE FAILURE MAY HAVE OCCURRED.