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Which of the following statements is correct?
Equivalent airspeed (EAS) is indicated airspeed (IAS) corrected for:
  • A
    Temperature and density error.
  • B

    Temperature, position and pressure error.

  • C

    Position, instrument and compressibility error.

  • D

    Position and density error.

IAS, CAS, EAS and TAS
  • Indicated Airspeed (IAS) is the speed shown on the airspeed indicator;
  • Calibrated Airspeed (CAS) is indicated airspeed corrected for instrument and position (pressure) error;
  • Equivalent Airspeed (EAS) is calibrated airspeed corrected for compressibility;
  • True Airspeed (TAS) is equivalent airspeed corrected for temperature and pressure altitude.
=> EAS = IAS + position error + compressibility error

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