If the EECs fail, the engines revert to manual mode without needing to have the switch selection made on the collective
MANUAL MODE - ECC FAIL In case of a critical failure of the EEC, the 1(2) EEC FAIL warning message is displayed in the CAS (associated with aural warning message WARNING – WARNING). The engine control system automatically enters into MANUAL mode: the FMM torque motor is disables and fuel flow can only be adjusted by moving the ECL. ECL position can be remotely controlled by acting on the ENG TRIM switches on the collective lever. ECL can also be manually moved by grasping it.