The torque resisting system for a helicopter which includes a body. Main rotor and a tail rotor, the system includes a deflector connected to an actuator for moving the deflector relative to the body. The system further includes a sensor that is operationally associated with the tail rotor and the actuator, such that the actuator moves the deflector upon: receiving a signal indicating that the tail rotor is operating below a predetermined rotation or a determination that the sensor is inoperable or absent.