Flying skills
Indicated airspeed
At a glance
Meaning of Indicated airspeed
The airspeed shown by the aircraft's airspeed indicator before the relevant corrections are applied.
More about Indicated airspeed
Indicated airspeed is a key reference for many aircraft handling and operating limits.
It differs from true airspeed, especially at altitude. Neither should be substituted directly for ground speed, which also includes the effect of wind on progress over the Earth.