As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CLIMB, THE ENGINE EXPERIENCED AN UNCOMMANDED DECREASE IN TORQUE ACCOMPANIED BY AN INCREASE IN TEMPERATURE. THE ENGINE WAS REPORTED TO EMIT A LOUD NOISE. THE AIRCRAFT DIVERTED TO POINT OF DEPARTURE. MFG WILL MONITOR INVESTIGATION OF THE EVENT AND WILL ADVISE OF ROOT CAUSE ONCE DETERMINED.