As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE TROUBLE SHOOTING FOR AN UNUSUAL NOISE DURING ENGINE SHUT DOWN, A BORESCOPE INSPECTION FOUND DAMAGE AND A MISSING 3RD STAGE IP ROTOR BLADE. DISASSEMBLY OF THE ENGINE CONFIRMED THAT ONE OF THE 3RD STAGE IPC ROTOR BLADES WAS MISSING.