Which instrument shows the speed that the Indicated Air Speed reads?

• A. Altimeter
• B. Attitude indicator
• C. Airspeed indicator
• D. Vertical speed indicator

Answer: (C)

Airspeed readings come from the airspeed indicator. This instrument is connected to the pitot-static system and uses dynamic pressure from the pitot tube, in combination with ambient static pressure, to display the indicated airspeed on its dial. It directly shows how fast the aircraft is moving through the air, which is the value pilots rely on for performance and safety. The altimeter, attitude indicator, and vertical speed indicator measure other things (altitude, orientation, and rate of climb/descent, respectively) and do not display airspeed.