What was found
FLIGHT: 9171, DURING FLIGHT AT 17,000 FEET, RT ENGINE TORQUE FLUCTATES FROM 3,000 LBS TO 2,500 LBS FOR 3 SECONDS. TORQUE STABLIZED AT 2,700 LBS FOR 10 SECONDS FOLLOWED BY ERRATIC TORQUE READINGS FROM 3,000 LBS TO 1,500 LBS WITH ITT AT 850 DEGREES. PERFORMED MEMORY ITEMS FOR ENGINE FAILURE IN FLIGHT TO SECURE ENGINE. DIVERTED, LANDED WITHOUT INCIDENT. REPLACED RT ENGINE ASSEMBLY.