As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DEPARTURE, THE FADEC DE GRADE LIGHT ILLUMINATED. THE PILOT RETURNED TO BASE & WHEN HE LANDED THE FADEC FAULT LIGHT ILLUMINATED. THE ACFT THEN WENT INTO MANUAL MODE & THE THROTTLE WAS UNRESPONSIVE TO INPUT. THE ENG STAYED AT 100% WHEN THE THROTTLE WAS IN IDLE POSITION. PILOT WAS ABLE TO SHUT DOWN ENG BY CLOSING THE THROTTLE TO THE OFF POSITION & STOPPING FUEL FLOW.