As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ENGINE O/H UPON EXPOSURE OF THE HPT ROTOR, EVIDENCE OF HEAT DISTRESS WAS NOTED AT THE AFT SEAL LOCATION. THE HPTR AFT SEAL SUMP SEAL TEETH AND OIL SLING PRESENTED PLASTIC DEFORMATION AND HEAT DISTRESS. THE COMPONENT WAS RETURNED TO OEM FOR INVESTIGATION. (K)