Ace the Skies in 2026: Master the Pilot Café IFR Practice Test and Soar with Confidence!

Indicated airspeed (IAS) is the speed read directly from the airspeed indicator in the cockpit of an aircraft. This measurement is based solely on the dynamic pressure of the air acting on the pitot tube and does not take into account any altitude or temperature corrections. It represents the performance of the aircraft in relation to the surrounding air, which is vital for ensuring safe flight operations. IAS is critical for maneuvers, stall recognition, and compliance with various speed limits specific to aircraft configuration and operation.

The other options do not accurately define IAS; they refer to different concepts such as calibrated airspeed or ground speed, which involve corrections for altitude or environmental conditions.