Refer to the Forecast Winds and Temperatures Aloft (FD) below. The wind direction at 6000 feet (FT) is forecast to be from 340 degrees, at 9000 feet it's from 330 degrees ... you get the idea. These directions are referenced to:

FT 6000 9000 12000
  3414+09 3322+05 3424-01



Magnetic north


True north


Magnetic north corrected for magnetic variation


True north corrected for magnetic variation

If you enjoyed taking this interactive quiz and would like to see more like it, go to the AVweb Brainteaser page. And if you thought it was unfair, confusing, or a waste of time, we'd like you to tell us that, too. And if you have an idea for a subject that you think would make a good future Brainteaser quiz, be sure to let us know.