Definition
A specific airspeed limit of 200 knots as read directly from the airspeed indicator, used in instrument procedures as the maximum speed for certain course reversal maneuvers such as procedure turns. The value is taken from the cockpit instrument without correction for instrument error, position error, air density, or wind.
Plain English
The airspeed indicator in the cockpit is showing 200 knots. That is the highest speed allowed when flying the course reversal portion of the procedure.
Context Anchor
Seen in instrument procedure and course reversal instructions, especially where the procedure assumes the aircraft will not exceed a certain indicated speed.
Derivation
Knot comes from the old sailing practice of measuring a ship's speed by counting knots tied at intervals along a rope let out behind the vessel over a set period of time. One knot equals one nautical mile per hour. 'Indicated' means the value is read straight off the cockpit gauge, with no corrections applied.
Why Pilots Care
This specific speed controls turn radius and ensures the aircraft remains within protected airspace during the maneuver.
Intuition Check
Indicated does not mean ground speed or the airplane’s fully corrected speed through the air. Here it means the number shown on the airspeed indicator in the cockpit.
Example Sentence 1
The procedure turn must be flown at or below 200 knots indicated airspeed to remain within the protected area.
Example Sentence 2
The holding pattern entry calls for slowing from cruise to 200 KIAS before starting the course reversal.