Which sequence correctly shows the order of speed corrections from indicated airspeed to true air speed according to the material?

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Multiple Choice

Which sequence correctly shows the order of speed corrections from indicated airspeed to true air speed according to the material?

Explanation:
The sequence tests how speed readings are progressively corrected to reflect actual flight conditions. You start with the raw reading from the airspeed indicator, which is IAS. This value includes instrument errors, so the next step is to remove those errors and obtain CAS. After that, at higher speeds compressibility effects come into play, so you apply a compressibility correction to convert CAS into EAS. Finally, you account for altitude and temperature effects to translate EAS into TAS, the true speed through the air. That’s why the order is IAS → CAS → EAS → TAS. Skipping the instrument correction, or applying corrections out of this order, would not properly account for the individual physical factors affecting airspeed readings.

The sequence tests how speed readings are progressively corrected to reflect actual flight conditions. You start with the raw reading from the airspeed indicator, which is IAS. This value includes instrument errors, so the next step is to remove those errors and obtain CAS. After that, at higher speeds compressibility effects come into play, so you apply a compressibility correction to convert CAS into EAS. Finally, you account for altitude and temperature effects to translate EAS into TAS, the true speed through the air.

That’s why the order is IAS → CAS → EAS → TAS. Skipping the instrument correction, or applying corrections out of this order, would not properly account for the individual physical factors affecting airspeed readings.

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