PA.IV.L.R2bFAA-S-ACS-6C · Nov 2023Risk management

b. Windshear

ACS element text (the applicant demonstrates understanding of)

Effects of: b. Windshear

Bottom line

The gust front causes a rapid, and sometimes drastic, change in surface wind ahead 12-24 of an approaching storm. Often, a “roll cloud” on the leading edge of a storm marks the top of the eddies in this shear, and it signifies an extremely turbulent zone.

FAA references

  1. PHAK ch. 12 (p. 12-24) — FAA-H-8083-25C (2023)
  2. PHAK ch. 12 (p. 12-8) — FAA-H-8083-25C (2023)
  3. AFH ch. 13 (p. 13-20) — FAA-H-8083-3C
  4. AFH ch. 16 (p. 16-18) — FAA-H-8083-3C
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