As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AT FL170 NP INDICATION ON NR 1 ENGINE INDICATED 120 PERCENT ON BOTH ANALOG AND DIGITAL DISPLAY, THE POWER LEVER WAS RETARDED TO FLIGHT IDLE AND NO CHANGE WAS OBSERVED ON NP. THE CONDITION LEVER RETARDED TO FEATHER, THE NP DROPPED TO 8 PERCENT. ALL OTHER ENGINE INDICATION IN THE GREEN. AN ENGINE SHUTDOWN AND SINGLE ENGINE LANDING PROCEDURE WAS APPLIED SUCCESSFULLY.