FAA FORM 8130-3
Master cylinders are located in the cockpit on each of the pilot’s rudder pedals. They are used to turn a force into a pressure to actuate the brakes on an aircraft. Push-type master cylinders are the most common type of master cylinder in the general aviation market. The aircraft’s linkage is set up to push the rod of the master cylinder. This action is achieved when the pilot puts a foot on the brake pedal to stop the aircraft.