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Sport Pilot Airplane practice question 15

Given the following: True course: 050 True heading: 040 True airspeed: 75 kts Groundspeed: 65 kts Determine the wind direction and speed.

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Correct answer: B. 355° and 16 knots.

The 10° left wind correction means the wind is from the left, and groundspeed is 10 knots below TAS, so there is a headwind component. Solving the wind triangle (75 kt at 040° through the air, 65 kt at 050° over the ground) gives wind from about 355° at about 16 knots.

References

Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), ch. 16, Navigation · search it in our library

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Question 15 from the FAA document Sport Pilot Airplane (SPA) Sample Questions (U.S. Government work, public domain) · ACS/LSC code PLT012. The FAA does not publish an answer key; the answer and explanation are ours, with references. Verify against the current regulations and handbooks.