Indicated airspeed is read from where?

• A. Read from the dial on the face of the instrument. Uncorrected
• B. Calibrated airspeed equals indicated airspeed corrected for instrument and position error
• C. True airspeed equals calibrated airspeed corrected for altitude and nonstandard temperature
• D. Density correction is applied to indicated airspeed under standard conditions

Answer: (A)

Indicated airspeed is what you read directly on the dial of the airspeed indicator, uncorrected for any errors. The instrument shows dynamic pressure and converts it to IAS, but it hasn’t been adjusted for instrument or position errors yet. Those corrections produce calibrated airspeed, which is IAS corrected for instrument and installation effects. The other statements describe how IAS is transformed into other airspeed concepts: true airspeed is CAS corrected for altitude and nonstandard temperature; and density-related corrections relate to other airspeed measures like equivalent or true airspeed, not simply reading IAS. So reading the dial itself gives the indicated airspeed in its uncorrected form.