As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CLIMB THE ELECTRONIC PROPELLER CONTROL ANNUNCIATED ACCOMPANIED BY AN AIRCRAFT YAW AND SUBSEQUENT FADEC FAIL WARNING. THE ENGINE WAS SHUT DOWN IN FLIGHT AND THE AIRCRAFT DIVERTED TO POINT OF DEPARTURE. SUBSEQUENT INSPECTION REVEALEDTHE ENGINE'S TORQUE TUBE DETACHED FROM ITS REFERENCE TUBE.