Can the yaw damper be engaged independently of the autopilot?

The yaw damper is a critical component in an aircraft's flight control system, designed to improve stability and control by counteracting unwanted yaw movements. Its ability to be engaged independently of the autopilot is a feature that enhances the pilot's control over the aircraft during various phases of flight.

Engaging the yaw damper separately allows for improved stability without relying on the autopilot system for overall flight control. This is particularly useful in manual flight operations where the pilot may choose to maintain responsiveness and hands-on control while still utilizing the benefits provided by the yaw damper to reduce yaw excursions.

In contrast, the other options suggest limitations that do not reflect the actual operational capabilities of the yaw damper. For example, stating that the yaw damper must always be used with the autopilot underestimates its standalone functionality. Similarly, the notions of restricted engagement to manual mode or exclusively during takeoff misrepresent the versatility and independence that the yaw damper possesses in various flight conditions.