As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT CALLED IN AND REPORTED FLUCTUATION OF FUEL AND TORQUE INDICATION ON RIGHT ENGINE. RETURNED TO BASE AND MONITORED ENGINE PARAMETERS, SHUT DOWN RIGHT ENGINE WHEN UNABLE TO CONTROL TORQUE SETTINGS. ON INSPECTION FOUND BEARING FAILED ON FUEL CONTROL UNIT, WAS THE FRONT BEARING ON DRIVESHAFT,PN 2525501. TEARDOWN REPORTED BEARING WASHED OUT/ LUBRICANT WAS LOST THROUGH SEAL.