FAA Private Pilot Test Prep

Correct answer: C. 230 true at 39 knots. When looking at winds aloft such as: 2339-04 break it into separate numbers- 23-39-04. The first two digits represent the wind direction in true direction, in this case 230. The next two digits are the speed, in this case 39 knots. The final digits and the preceding sign are the temperature, in this example - 04 degrees.