As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6205 - IAD-MHT - DURING CRUISE, AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO RT ENGINE TORQUE FLUCTUATION. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND SWAPPED TORQUE BRIDGES. OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)