As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT FROM PHX NR 4 ENG EGT BEGAN TO CLIMB RAPIDLY AND NR 1 & NR 2 SPOOLED DOWN. ENG WAS SHUT DOWN FOLLOWING PUBLISHED PROCEDURES AND THE ACFT RETURNED TO PHX AND LANDED WTIHOUT INCIDENT. AFTER LANDING THE ENG WAS INSPECTED AND FOUND THAT THERE WERE SEVERAL SECTIONS OF TURBINE BLADES HAD FAILED AND CAUSED ADDITIONAL DAMAGE TO THE TURBINE WHEELS AFT OF THE FAILED DISC BLADES. THE DAMAGE WAS CONTAINED WITHIN THE TAIL PIPE AND NO EXTERNAL DAMAGE WAS NOTED TO ANY ADJACENT AREAS. (S)