As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, THE RT ENG AUTO FEATHERED. THE RT ENG TORQUE READOUT WAS ZERO. ALL OTHER ENG PARAMETERS SHOWED NORMAL ENG OPERATING CONDITIONS. THE PILOT RETURNED & LANDED WITHOUT INCIDENT. INSPECTED THE RT ENG TORQUE SYS & FOUND THE RT ENG TORQUE SIGNAL CONDITIONER WAS DEFECTIVE. THE RT ENG TORQUE SIGNAL CONDITIONER WAS REPLACED. THE RT ENG WAS GND RUN, THE RT ENG TORQUE INDICATOR FUNCTIONALLY CHECKED NORMAL. TORQUE SIGNAL CONDITIONER IS AN ON CONDITION PART. TIME IN SERVICE IS UNKNOWN.