As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT RH ENGINE EEC FAILURE ANNUNCIATED WITH POWER REDUCTION TO ZERO PERCENT TORQUE. CREW PERFORMED QRH PROCEDURE, UNABLE TO RESTORE POWER ABOVE FLT IDLE. AIRCRAFT DIVERTED TO SUITABLE AIRPORT WITH PROPELLER IN FEATHER. AFTER LANDING ENGINE POWER AND EEC SYSTEM CHECKED, COULD NOT DUPLICATE, EEC AND ENGINE OPERATION WAS NORMAL.