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 REDUCTION IN POWER. THE CREW SHUT THE ENGINE DOWN IN FLIGHT AND DIVERTED TO POINT OF DEPARTURE. SUBSEQUENT INVESTIGATION REVEALED AN UNSERVICEABLE ENGINE MECHANICAL FUEL CONTROL UNIT(FCU).