As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ABORTED TAKE-OFF CREW REPORTED SLUGGISH BEHAVIOR ON LT ENGINE AND RH ENGINE TORQUE FLUCTUATION DURING TAKE-OFF ROLL AND ROTATION. THE AIRCRAFT RETURNED TO POINT OF DEPARTURE AND TROUBLESHOOTING IS ONGOING WITH MANUFACTURER ASSISTANCE.