What was found
DURING CLIMBOUT, CREW NOTICED TORQUE BEGIN FALLING. AFTER REACHING CRUISE ALTITUDE OF 3,500 MSL THE TORQUE STEADIED AT 975 FT LBS AND CREW DECLARED AN EMERGENCY DUE TO ENG LOSS OF POWER. FLIGHT LANDED AT 2250Z WITHOUT FURTHER INCIDENT. THE CREW REPORTED ITT AT 610, NG AT 90 PERCENT AND FUEL FLOW AT 290 DURING TIME OF INCIDENT. MX TROUBLESHOOT TORQUE LOSS DURING FLIGHT AND FOUND IT DUE TO CRACKED HEATED PY LINE. MX REMOVED AND REPLACED PY LINE AND ENGINE RUN-UPS ALL CHECKED GOOD. (ENGINE TSO 3470.0)