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The yaw damper affects:
  • A
    ailerons and rudder.
  • B
    all control surfaces in a co-ordinated way.
  • C
    ailerons only.
  • D
    rudder only.
The yaw damper system uses the angular rate signal about the yaw axis to control the rudder. A yaw damper indicator in the cockpit supplies the flight crew with the yaw damper action on the rudder. A computer sends a motion order to the rudder if the yaw rate of the aircraft is not equal to zero. In other words, it is moving the rudder without moving the rudder pedals. It is designed to reduce the roll ratio in the Dutch roll oscillations. The yaw damper system is operative during both manual, and automatic flight.
 

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