The groundspeed is the aircraft’s airspeed corrected to account for the wind direction and speed on the desired course.

The function calculates the heading required to fly a desired course, given the wind direction and speed.

The wind correction angle tells the pilot by how many degrees he should adjust his heading to the left (-) or to the right (+).



Wind Direction: 270°

Wind Speed: 10 Kts

Course: 0°

True Airspeed: 90 Kts



Groundspeed: 89.4 Kts

Heading: 354°

Wind Correction Angle: -6 (6° to the left)