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Aircraft systems and instrumentsQuestion 540 of 934

What is the best angle-of-climb speed (VX) used for?

  1. To gain the most altitude per unit of time
  2. To clear obstacles on a short-field takeoff
  3. To fly the greatest distance on one fuel load
  4. To fly at the lowest power setting in cruise
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Correct answer: To clear obstacles on a short-field takeoff

VX gives the greatest altitude gain in a given distance.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 8: Flight Instruments — Airspeed Indicator Markings — Other Airspeed Limitations, page 212

Practice aircraft systems and instruments

Questions last reviewed: 18 October 2026