FlyCurrentFLYCURRENT
CA.IV.B.K2FAA-S-ACS-7B · Nov 2023Knowledge

Effects of atmospheric conditions, including wind, on approach and landing performance.

ACS element text (the applicant demonstrates understanding of)

Effects of atmospheric conditions, including wind, on approach and landing performance.

Bottom line

A crosswind that exceeds an aircraft's demonstrated maximum crosswind component or the pilot's ability may result in loss of control on the ground. An approach over a large body of water or thick vegetation tends to create a sinking effect that can cause an unwary pilot to land short of the intended landing spot.

Key numbers

Key numbers for Effects of atmospheric conditions, including wind, on approach and landing performance.
NumberWhat it means
1 to 5 knots cross-runway component can keep the upwind vortex in the touchdown zoneCrosswind vortex

FAA references

  1. RMH ch. 3 (p. 3-7) — FAA-H-8083-2A
  2. PHAK ch. 12 (p. 12-8) — FAA-H-8083-25C (2023)
  3. AIM 7-4-4 (Vortex Behavior) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  4. AFH ch. 12, Operational Procedures (p. 12-4) — FAA-H-8083-3C
  5. PHAK ch. 11 (p. 11-16) — FAA-H-8083-25C (2023)
  6. SEA ch. 6 (p. 6-8) — FAA-H-8083-23
Members lesson

Build understanding you can use

Unlock the full lesson and continue studying this element.

  • Full teaching sections: What it is; Key points; Rules and numbers; How it is done
  • Check your understanding with answers you can reveal
  • Common mistakes paired with the FAA facts that correct them
View membership options