What does “True Airspeed” refer to?

True Airspeed refers to the actual speed of an aircraft through the air, accounting for various atmospheric conditions such as temperature and pressure. This is essential for understanding how the aircraft interacts with the air mass it is flying through. Unlike indicated airspeed, which is what is shown on the airspeed indicator and can vary based on air density, true airspeed provides a more accurate measure of performance during flight, especially at higher altitudes where air density decreases. By correcting for these variables, pilots can ensure that they are aware of their actual speed, which is crucial for navigation, fuel calculations, and safety throughout a flight.