Plain English Meaning

200 knots, read straight off the airspeed indicator. It's a speed limit you must not exceed in certain airspace situations.

Full Definition

A specific airspeed value of 200 knots as shown directly on the aircraft's airspeed indicator, without correction for instrument or position errors. In instrument procedures, 200 KIAS is a regulatory speed limit applied in certain airspace and segments — most notably the maximum airspeed permitted when operating in Class B airspace beneath the lateral limits of the Class B (or in a VFR corridor through it), and the maximum speed for aircraft operating at or below 2,500 feet AGL within 4 nautical miles of the of a or .