What happens to the yaw damper system during an autopilot disengage?

When the autopilot disengages, the yaw damper system typically becomes inoperative. This is because the yaw damper is designed to work in conjunction with the autopilot to enhance the aircraft's stability and control during flight. When the autopilot is turned off, the system that manages the yaw damper is also deactivated, leading to the inability of the yaw damper to function effectively.

The yaw damper helps to prevent adverse yaw (unwanted yawing motion) and assists in keeping the aircraft coordinated during maneuvers. However, without the guidance and input from the autopilot, the yaw damper loses its operational capacity.

While some systems might allow for manual control or have specific redundancies, in many conventional systems, the yaw damper simply stops working when the autopilot disengages, accurately reflecting how these systems are designed to interact with one another.