As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1354 - MKE-TVC - SHORTLY AFTER TAKEOFF, THE LEFT ENGINE TORQUE STARTED FLUCTUATED 100-200 LB. THE CREW MADE AN AIR-TURN-BACK AND AN UNEVENTFUL LANDING. MAINTENANCE INSPECTED THE ENGINE AND REPLACED THE BETA BLOCK. MAINTENANCE OPS CHECKED THE A/C AND RETURNED IT TO SERVICE. (M)