What was found
(CAN) DURING DESCENT, THE ENGINE ACCELERATED UNCOMMANDED AS THE TORQUE, FUEL FLOW AND COMPRESSOR SPEED ACCELERATED OVER A 2 SECOND PERIOD. THE ENGINE THEN STABILIZED JUST ABOVE NORMAL OVER THE NEXT 8 TO 10 SECONDS AND THE APPROACH AND LANDING WERE PERFORMED WITH NO OTHER ISSUES. POST FLIGHT INSPECTION FOUND NO ANOMALIES AND GROUND RUNS WERE SATISFACTORY. THE ACFT WAS FERRIED BACK TO HOME BASE WHERE FURTHER TROUBLESHOOTING IS CURRENTLY BEING DONE.