As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT DEPARTED SLC, ON CLIMBOUT THE PILOTS EXPERIENCED A VIBRATION. REDUCED POWER AND VIBRATION WENT AWAY. THE PILOTS DECIDED TO RETURN TO SLC AND LANDED WITH NO FURTHER PROBLEMS. INVESTIGATING THE TAIL PIPE OF THE ENGINE, FOUND A PIECE OF THE THIRD STAGE TURBINE WHEEL BLADE BROKEN OFF AND STUCK IN THE TAIL PIPE OF THE ENGINE.