What is required to calculate a lead-point for a course intercept?

To calculate a lead-point for a course intercept, understanding the aircraft's ground speed and the angle of intercept is crucial. The ground speed indicates how fast the aircraft is traveling over the ground, while the angle of intercept refers to the angle at which the aircraft will approach the desired flight path or course.

By knowing these two parameters, a pilot can determine how far in advance of the desired course to initiate a turn or correction, allowing for the necessary time and distance to adjust the aircraft's path effectively. This calculation is vital for ensuring that the aircraft intersects the course at the correct point, thus maintaining efficient navigation and safety.

Considering the other options, the desired course significance relates more to the importance of the course rather than the mathematical calculation for the lead-point. The latitude and longitude of a NAVAID provide references for navigation but do not directly influence the lead-point calculation. Wind direction and speed can affect the aircraft's actual path over the ground, but they are not essential for calculating the lead-point itself, though they might require additional adjustments after establishing the initial lead-point calculation.