What is the primary function of the airspeed indicator?

The primary function of the airspeed indicator is to indicate the aircraft's speed, which is vital for safe and effective flight operations. The airspeed indicator measures the dynamic pressure of the air flowing around the aircraft and converts that measurement into a readable speed. Pilots rely on this information to ensure they are flying within safe speed ranges for various phases of flight, such as takeoff, climb, cruise, and landing.

Understanding the aircraft's speed helps pilots maintain control and avoid situations that could lead to stalling or exceeding operating limits. Proper speed management is also crucial for effective maneuvering and fuel efficiency. This instrument is essential not only for safe flight operations but also for compliance with air traffic control regulations and to ensure a secure flying environment overall.