Definition
The airspeed read directly from the airspeed indicator in the cockpit, uncorrected for installation error, instrument error, or variations in air density due to altitude, temperature, or compressibility. It is derived from the difference between ram (pitot) air pressure and static air pressure, displayed as a speed value.
Plain English
It's simply the speed shown on the airspeed dial in front of you. The number hasn't been adjusted for any errors or for the thinner air at altitude — it's the raw reading.
Context Anchor
Seen on the cockpit airspeed indicator during takeoff, climb, cruise, approach, landing, and maneuvering.
Derivation
"Indicated" comes from the Latin indicare, meaning "to point out or show." In this context it means the speed the instrument is showing you — not a corrected or true value, just what the needle is pointing at.
Why Pilots Care
Aircraft performance numbers, limitations, and stall speeds are published in indicated airspeed, so pilots use IAS for all normal cockpit references and decisions.
Grounding Statement
If the airspeed indicator shows 80 knots, the airplane’s indicated airspeed is 80 knots.
Intuition Check
“Indicated” does not mean perfectly accurate. It means shown on the instrument before certain corrections are applied.
Example Sentence 1
On final approach, the pilot held an indicated airspeed of 65 knots, just as the handbook recommended.
Example Sentence 2
During cruise the pilot noted an indicated airspeed of 110 knots while maintaining level flight.