As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING OPERATION, A LOUD BANG AND INCREASE IN ITT WERE OBSERVED. FIELD BORESCOPE INVESTIGATION IDENTIFIED SEVERAL MISSING 3RD STAGE IP ROTOR BLADES. DISASSEMBLY OF THE ENGINE CONFIRMED THAT FIVE OF THE 3RD STAGE IPC ROTOR BLADES WERE MISSING.