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Remote Pilot (Part 107) practice question 39
You have received an outlook briefing from flight service through 1800wxbrief.com. The briefing indicates you can expect a low-level temperature inversion with high relative humidity. What weather conditions would you expect?
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Correct answer: A. Smooth air, poor visibility, fog, haze, or low clouds.
Inversions are layers of smooth, stable air that trap moisture and pollutants beneath them. With high relative humidity, expect smooth air with poor visibility in fog, haze or low clouds.
References
- Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), p. 12-13, Weather Theory · search it in our library
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Question 39 from the FAA document Unmanned Aircraft General (UAG) Sample Questions (U.S. Government work, public domain) · ACS/LSC code UA.III.B.K1j. The FAA does not publish an answer key; the answer and explanation are ours, with references. Verify against the current regulations and handbooks.