What was found
(CAN) AFTER LANDING, DURING THE ENGINE SHUTDOWN PROCEDURE, THE PILOT REPORTED THAT THE ENGINE REMAINED AT FLIGHT IDLE EVEN IF THE CONDITION LEVER (CLA) WAS PLACE AT GROUND IDLE. WHEN HE SLIGHTLY MOVED THE POWER LEVER (PLA), THE ENGINE EXPERIENCE AN UN-COMMANDED ACCELERATION. AFTER SOME MANOEUVRES WITH THE CLA AND PLA, THE PILOT SUCCESSFULLY SHUT DOWN THE ENGINE. AFTER TROUBLESHOOTING, THE FCU WAS REPLACED.