Calibrated airspeed (CAS)

Definitions

• Indicated airspeed corrected for installation error and instrument error. Although manufacturers attempt to keep airspeed errors to a minimum, it is not possible to eliminate all errors throughout the airspeed operating range. At certain airspeeds an
• 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

References

• 14 C.F.R. Part 1, Federal Aviation Administration, 2026
• Airplane Flying Handbook, Federal Aviation Administration, 2021