What should be checked during the climb checklist regarding the rudder boost system?

During the climb checklist, it is essential that the rudder boost system is turned off. The rudder boost system is designed to assist the pilot in counteracting the yaw induced by asymmetrical thrust during certain phases of flight, such as takeoff and landing. However, during a climb, a powered rudder can adversely affect the aircraft's handling characteristics and may pose a risk if engaged.

By ensuring that the rudder boost system is turned off during the climb phase, pilots maintain better control of the aircraft and ensure that they are operating under normal aerodynamic conditions. This approach aligns with principles of safe aircraft operation, minimizing potential complications from unintended inputs or responses from the rudder boost during a critical phase of flight where maintaining control is particularly important.

Monitoring, leaving it inactive, or turning it on would not be appropriate actions during this stage of flight and could lead to deterioration in aircraft handling or control.