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CA.V.C.K3FAA-S-ACS-7B · Nov 2023Knowledge

Appropriate airplane configuration for maximum performance climb.

ACS element text (the applicant demonstrates understanding of)

Appropriate airplane configuration for maximum performance climb.

Bottom line

VX is the best angle-of-climb speed, at which an airplane gains the greatest amount of altitude in a given distance.

Key numbers

Key numbers for Appropriate airplane configuration for maximum performance climb.
NumberWhat it means
VX is used during a short-field takeoff to clear an obstacleVX use
VY provides the most altitude gain in a given period of timeVY gain

FAA references

  1. PHAK Glossary (p. G-34) — FAA-H-8083-25C (2023)
  2. PHAK ch. 11 (p. 11-8) — FAA-H-8083-25C (2023)
  3. AFH ch. 9 (p. 9-11) — FAA-H-8083-3C
  4. AFH ch. 9 (p. 9-12) — FAA-H-8083-3C
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