Which airspeed is corrected for non-standard temperature/pressure?

• A. True airspeed
• B. Calibrated airspeed
• C. Indicated airspeed
• D. Equivalent airspeed

Answer: (A)

The main idea is that air density changes with temperature and pressure, and airspeed readings depend on that density. The airspeed indicator measures dynamic pressure, which is tied to how fast you move through the air, but it assumes standard sea‑level density. To know your actual speed through the air, you must account for the real density, which comes from the actual temperature and pressure. True airspeed is the speed through the air mass corrected for these non-standard conditions. So in hot, low-density air you’d be moving faster through the air than the indicated reading would suggest, making true airspeed higher than what you see on the gauge.