Calibrated Airspeed Law and Legal Definition
According to 14 CFR 1.1 [Title 14 Aeronautics and Space; Chapter I Federal Aviation Administration, Department of Transportation; Subchapter A Definitions; Part 1 Definitions and Abbreviations], Calibrated Airspeed means “the indicated airspeed of an aircraft, corrected for position and instrument error. Calibrated airspeed is equal to true airspeed in standard atmosphere at sea level.”
