What was found
DEPARTING, CAPTAIN NOTICED THE LT ENGINE TORQUE DROPPING AND THE ITT RISE TO APPROX 850 DEGREES. THE CAPTAIN PUSHED THE LT POWER LEVEL UP SLIGHTLY TO VERIFY THAT IT HAD NOT WORKED ITSELF BACK. FLIGHT CREW COMPLETED THE VITAL ACTION ITEMS. FLIGHT CREW DECLARED AN EMERGENCY WITH THE ATC. AC LANDED WITHOUT INCIDENT AND THE AC WAS TAXIED BACK THE RAMP. MECHANIC WAS DISPATCHED WITH A SERVICEABLE ENGINE MODULE, INCLUDING ACCESSORIES. ENGINE MODULE, INCLUDING ACCESSORIES AND PROP WAS REMOVED. SERVICEABLE COMPONENTS WERE INSTALLED IAW MM. ORIGINAL PROP WAS REINSTALLED IAW MM. THE LT ENGINE WAS GROUND RUN AND LEAK AND OPS CHECK GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.