Remove Indicated Airspeed Remove True Airspeed Remove Visual Flight Rules
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Exploring the Intricacies of the Airspeed Indicator

Pilot's Life Blog

True Airspeed vs Indicated Airspeed VS Equivalent Airspeed Since airspeed indicators use air pressure to measure speed, the indicated airspeed can be less than the actual airspeed at higher altitudes. If oriented otherwise, the system has an error.