As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE EGT STAYING AROUND 687 DEG CELSIUS AND N2 IS AT 75.5 ENG WILL NOT ACCEL. METAL SIZE OF BB-S CAN BE SEEN IN THE AFT TURBINE SECTION. BOROSCOPE REVEALED HPC DAMAGED. THE T/E OF THE HPT SHOWED EVIDENCE OF FOD DAMAGE. REPLACED ENGINE.