As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF AND CLIMB, SPARKS WERE REPORTED COMING FROM THE TAILPIPE. FIELD BORESCOPE INVESTIGATION IDENTIFIED A MISSING 3RD STAGE IP ROTOR BLADE. DISASSEMBLY OF THE ENGINE CONFIRMED THAT THREE OF THE 3RD STAGE IPC ROTOR BLADES WERE MISSING.