What was found
DURING CLIMB, THE CREW FELT A VERY SLIGHT YAW IN THE ACFT. THE IAS WAS 320 KNOTS, PHASE OF FLIGHT WAS CLIMB, TIME WAS APPROX 13:00, NR 2 ENGINE RTS WAS REPORTED TO HAVE HAD A POWER ROLL BACK EVENT. THERE WERE NO CREW ALERTING SYS, (CAS) MESSAGES DISPLAYED AND THE ENGINE PARAMETERS WERE NORMAL. SOON AFTER A SECOND YAW WAS FELT AND THE EVENT MARKER WAS PUSHED TO MARK IN THE CENTRAL ACFT INFORMATION MX SYS, (CAIMS), AGAIN THE CAS MESSAGES AND THE ENG PARAMETERS WERE INDICATING NORMAL. NO OTHER EVENTS WERE EXPERIENCED. TROUBLESHOOTING CONFIRMED THE ROOT CAUSE OF THIS EVENT IS THE ELECTRONIC ENGINE CONTROLLER,