What was found
UNCOMMANDED POWER CHANGE AFTER TAKEOFF, DURING A REVENUE FLIGHT, THE CREW FELT VIBRATIONS AND NOTICED ALL ENGINE PARAMETERS INCREASING. THE CREW ELECTED TO DIVERT. DURING APPROACH, POWER WAS REDUCED AND VIBRATIONS DISAPPEARED. AN UNEVENTFUL LANDING WAS ACCOMPLISHED. TROUBLESHOOTING IS ONGOING. MFG WILL INVESTIGATE TO ESTABLISH ROOT CAUSE AND SUPPLEMENT THE REPORT ONCE THE INFORMATION IS AVAILABLE.