FAA Ground School Practice Test

What wind direction is indicated for winds aloft at STL?

1. 200 degrees

2. 220 degrees

3. 230 degrees

4. 240 degrees

The correct answer is: 230 degrees

For winds aloft, the direction is indicated in degrees identified by true north. In this case, if the winds aloft at STL (St. Louis) are reported to be from 230 degrees, this means that the wind is blowing from the southwest (since 230 degrees is located between 180 and 270 degrees on a compass). This direction indicates that if you were to stand facing the point where the wind is coming from, you would be facing towards the southwest, resulting in winds blowing toward the northeast. An understanding of wind direction is crucial for pilots in flight planning and navigation, as it helps assess factors like altitude adjustments, flight route, and aircraft performance. The other options reflect other wind directions that could be interpreted from the given compass readings, but they do not represent the indicated wind direction at STL in this scenario.