As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE PILOT REPORTED THAT DURING FLIGHT AT CRUISE, THE LT ENGINE POWER INCREASES BY ITSELF. THE PILOT MUST REDUCE THE POWER WITH THE THROTTLE TO MATCH THE RT ENGINE. THEN AFTER SEVERAL MINUTES THE POWER DECREASES BY ITSELF AND THE PILOT MUST BRING THE LT THROTTLE BACK UP TO MATCH THE RT. TROUBLESHOOTING ONGOING.