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Sport Pilot Airplane practice question 6
A pilot can expect a wind-shear zone in a temperature inversion whenever the windspeed at 2,000 to 4,000 feet above the surface is at least
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Correct answer: C. 25 knots.
Low-level wind shear is commonly associated with temperature inversions when the winds just above the inversion are strong. The usual rule of thumb is 25 knots or more at 2,000 to 4,000 feet.
References
- Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), p. 12-11, Weather Theory · search it in our library
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Question 6 from the FAA document Sport Pilot Airplane (SPA) Sample Questions (U.S. Government work, public domain) · ACS/LSC code PLT518. The FAA does not publish an answer key; the answer and explanation are ours, with references. Verify against the current regulations and handbooks.