Calibrated Airspeed (CAS) is the indicated airspeed corrected for installation and instrument errors.

Calibrated Airspeed (CAS) is the indicated airspeed corrected for installation and instrument errors.

• A. Indicated Airspeed
• B. Calibrated Airspeed (CAS)
• C. True Airspeed
• D. Mach Number

Answer: (B)

Understanding airspeed types helps connect what you see on the gauges to how the aircraft actually moves through the air. Indicated Airspeed is what the airspeed indicator shows, but it includes instrument and installation errors. Calibrated Airspeed is that same indicated value after those systematic errors are removed, giving a more accurate measure of the aircraft’s speed in the air. So, the statement that Calibrated Airspeed is the indicated airspeed corrected for installation and instrument errors is correct. True Airspeed is a further correction that accounts for air density changes with altitude and temperature to reflect actual speed through the air, while Mach number relates that true speed to the local speed of sound.

Understanding airspeed types helps connect what you see on the gauges to how the aircraft actually moves through the air. Indicated Airspeed is what the airspeed indicator shows, but it includes instrument and installation errors. Calibrated Airspeed is that same indicated value after those systematic errors are removed, giving a more accurate measure of the aircraft’s speed in the air.

So, the statement that Calibrated Airspeed is the indicated airspeed corrected for installation and instrument errors is correct. True Airspeed is a further correction that accounts for air density changes with altitude and temperature to reflect actual speed through the air, while Mach number relates that true speed to the local speed of sound.