As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE FAILED IN FLIGHT. MAX EXHAUST GAS TEMPERATURE EXCEEDED. *S/D* THE IFSD WAS CAUSED BY A FAILURE OF A HIGH PRESSURE COMPRESSOR (HPC) 4TH STAGE (C4) BLADE. THE ROOT CAUSE OF THE BLADE FAILURE WAS HIGHER-THAN-NORMAL HIGH CYCLE FATIGUE STRESS CAUSED BY NON-OPTIMAL VARIABLE STATOR VANE (VSV) SCHEDULING. THE ROOT CAUSE IS BEING CORRECTED FOR UAL'S FLEET PER AN ELECTRONIC ENGINE CONTROL SOFTWARE MODIFICATION (V2500-ENG-73-0169) FOLLOWED BY AN ULTRASONIC INSPECTION OF THE BLADE (V2500-ENG-72-0373).