If a pilot finds that they are unable to land safely, or deems it necessary to go-around for any reason, activating this switch (usually positioned on the back of the throttle levers) will increase the power to go-around thrust. Importantly, the TO/GA switch modifies the autopilot mode, so it does not continue to follow the Instrument Landing System (ILS) glide slope and it overrides any auto-throttle mode which would keep the aircraft in landing configuration. On Airbus aircraft, it does not disengage the autopilot but causes it to stop following the ILS and to perform the go-around maneuver automatically.