As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FINAL APPROACH, THE OPERATOR REPORTED A SHIFTING AND DECREASE OF TORQUE ON THE RT ENGINE. THE POWER LEVER WAS PUSHED FORWARD TO COMPENSATE THE TORQUE DECREASE BUT WHEN PASSING THE FINAL APPROACH POINT THE CREW NOTICED THAT THE TORQUE WAS AT 0. NO ENGINE SHUTDOWN OCCURRED AND THE ACFT LANDED SAFELY. TROUBLESHOOTING IS ON-GOING.