What is the purpose of the automatic airbrake system?

The automatic airbrake system is specifically designed to enhance safety and performance during critical phases of flight, particularly during landing or a rejected takeoff. Its primary function is to assist in the overall braking process, helping to reduce the aircraft's speed more efficiently upon touchdown. By deploying the airbrakes, drag is increased, which helps to decelerate the aircraft quickly and effectively. This action is vital in preventing a potential bounce after touchdown, where the aircraft could inadvertently rebound off the runway if there's inadequate deceleration.

The automatic deployment of airbrakes ensures that the aircraft is managed correctly without the need for excessive pilot input under high-stress conditions, thus enhancing overall operational safety. This function distinctly differentiates it from other choices, which do not pertain directly to the role of an airbrake system in influencing aircraft deceleration during landing.