As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUE TO AND ITT AND N2 SHIFT NOTED IN THE TREND MONITORING, THE ENGINE WAS BORESCOPE INSPECTED. BOROSCOPE INSPECTION REVEALED SEVERAL 3RD STAGE IP ROTOR BLADES WITH CRACKS PROPAGATING FROM THE ROOT TRAILING EDGE. DISASSEMBLY OF THE ENGINE CONFIRMED THAT ONE OF THE 3RD STAGE IPC ROTOR BLADES WAS MISSING.