Flying skills
Airspeed
At a glance
Meaning of Airspeed
The aircraft's speed relative to the surrounding air.
More about Airspeed
Airspeed differs from ground speed because the air itself can move relative to the Earth. Indicated and true airspeed are also different measures.
Crews use the appropriate speed reference for performance and aircraft control. Wind must be considered when estimating progress over the ground and journey time.