weather servicesFAA-published sample question (PRH, Aug 2021)
(Refer to FAA-CT-8080-2H, Figure 17.) What wind is forecast for STL at 12,000 feet?
Official FAA figure (FAA-CT-8080 testing supplement). Open full size →A
230° true at 56 knots.
B
230° true at 39 knots.✓ Correct Answer
C
230° magnetic at 56 knots.
Explanation
In Figure 17 the STL entry under 12,000 feet is 2339-04: 23 = 230 degrees, 39 = 39 knots, and -04 = minus 4 degrees Celsius. Winds and temperatures aloft forecasts give direction relative to true north, so the forecast is 230 degrees true at 39 knots. 56 knots is the 18,000-foot value (2356-16), and the direction is not magnetic.
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