How does a pilot use the "airspeed indicator" during a go-around?

During a go-around, the pilot utilizes the airspeed indicator primarily to maintain the correct approach speed. This is critical because achieving the appropriate speed ensures that the aircraft remains controllable and stable during the maneuver. By monitoring the airspeed, pilots can react appropriately to maintain safe flight parameters as they execute the go-around procedure, helping to prevent stalling and ensuring that the aircraft is in a performance envelope suitable for climbing away from the runway.

Using the airspeed indicator in this scenario is essential as it directly affects the aircraft's ability to climb and maneuver safely. The pilot needs to ensure that they are at or above the minimum safe airspeed for the aircraft configuration being used, which usually involves having flaps extended for increased lift while still being mindful of avoiding excessive drag.

Other options, while related to flying, do not address the specific function of the airspeed indicator during a go-around. The altitude is checked on a vertical speed indicator or altimeter instead, flap adjustments would occur based on speed needs but are not the primary function of the airspeed indicator itself, and communication with air traffic control does not utilize the airspeed indicator directly but relies on procedural adherence and situational awareness.