Calibrated Airspeed is Indicated Airspeed corrected for which factors?

Calibrated Airspeed is Indicated Airspeed corrected for which factors?

• A. Altitude and temperature
• B. Wind and altitude
• C. Installation and instrument errors
• D. Ground speed

Answer: (C)

Calibrated Airspeed accounts for errors in the airspeed system itself. Indicated Airspeed is what the airspeed indicator shows, but the instrument and how the pitot-static system is installed can introduce errors. Calibrated Airspeed corrects IAS for these instrument and installation (position) errors, giving a more accurate reading of airspeed through the air. This is different from True Airspeed, which adjusts for air density changes with altitude and temperature, and from ground speed, which is affected by wind. So this question’s correct choice reflects that CAS = IAS corrected for installation and instrument errors.

Calibrated Airspeed accounts for errors in the airspeed system itself. Indicated Airspeed is what the airspeed indicator shows, but the instrument and how the pitot-static system is installed can introduce errors. Calibrated Airspeed corrects IAS for these instrument and installation (position) errors, giving a more accurate reading of airspeed through the air.

This is different from True Airspeed, which adjusts for air density changes with altitude and temperature, and from ground speed, which is affected by wind. So this question’s correct choice reflects that CAS = IAS corrected for installation and instrument errors.