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CA.II.E.K4FAA-S-ACS-7B · Nov 2023Knowledge

Visual indicators for wind.

ACS element text (the applicant demonstrates understanding of)

Visual indicators for wind.

Bottom line

The large end of a wind cone or wind sock points into the wind, as does the large end (cross bar) of the wind tee. Pilots are cautioned against using a tetrahedron to indicate wind direction; its small end points in the direction of landing.

FAA references

  1. AIM 4-3-4 (Visual Indicators at Airports Without an Operating Control Tower) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  2. PHAK ch. 14 (p. 14-20) — FAA-H-8083-25C (2023)
  3. SEA ch. 4 (p. 4-11) — FAA-H-8083-23
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