As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6448 - JFK-PIT - DURING CRUISE, UNSCHEDULED LANDING AT JFK DUE TO RT TORQUE FLUCTUATION WITH TTL OFF. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND IS IN THE PROCESS OF CHANGING RT ENGINE. ENGINE CHANGE LATE DUE TO AWAITING PARTS. MAINTENANCE COMPLETED ENGINE CHANGE 10/17/97, OPS CHECK OK. AIRCRAFT WAS APPROVED AND RELEASED FOR SERVICE. (M)