What is a generally recommended practice for autopilot usage during cruise flight in icing conditions?

In icing conditions, it is important for pilots to have a good understanding of how their aircraft behaves and to ensure that the autopilot is effectively managing the aircraft’s performance. Periodically disengaging the autopilot and hand flying the airplane allows the pilot to assess the aircraft's response to changing aerodynamic conditions that could be influenced by accumulation of ice. This hands-on approach helps in detecting any subtle flight characteristics or handling issues that might not be evident when the autopilot is engaged.

By hand flying, the pilot can make real-time adjustments to control inputs based on how the aircraft responds to the weight and shape changes due to ice, as well as variations in engine performance or power settings. Furthermore, this allows for a better appreciation of the aircraft's handling in actual conditions, rather than relying solely on automation.

Therefore, this practice supports maintaining situational awareness and enhances overall safety by aligning the pilot's inputs directly with the aircraft's performance, particularly important in adverse weather situations such as icing.