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PA.IV.F.R2cFAA-S-ACS-6C · Nov 2023Risk management

c. Tailwind

ACS element text (the applicant demonstrates understanding of)

Effects of: c. Tailwind

Bottom line

The effect of wind on takeoff distance is large, and proper consideration must also be provided when predicting takeoff distance.

FAA references

  1. PHAK ch. 11 (p. 11-15) — FAA-H-8083-25C (2023)
  2. AIM 7-4-4 (Vortex Behavior) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  3. PHAK ch. 12 (p. 12-11) — FAA-H-8083-25C (2023)
  4. PHAK ch. 14 (p. 14-28) — FAA-H-8083-25C (2023)
  5. AIM 4-3-17 (VFR Helicopter Operations at Controlled Airports) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
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