As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING TAKEOFF OPERATION, AT FULL POWER, 97 PERCENT TORQUE, THE ENGINE NR 1 HAD AN UNCOMMANDED AUTOFEATHER. THE PILOT REDUCED POWER TO IDLE. THE TAKEOFF WAS ABORTED AND THE ACFT WAS RETURNED TO THE RAMP. FDR WAS SENT TO EVALUATE THE MAXIMUM POWER OBTAINED. THE INVESTIGATION IS IN PROGRESS.