There is a loud "dual input" voice + a red light just infront of you. Also if you push the red button on the sidestick and keep it pressed you override all te c

There is a loud "dual input" voice + a red light just infront of you. Also if you push the red button on the sidestick and keep it pressed you override all te commands of the other one. This has several reasons, taking away the control from a disoriented pilot or disengaging a malfunctioning sidestick which is commanding random inputs.