When do I start my descent?

(video coming VERY soon!)

There are some basic rules that you can use to calculate the point at which you have to start you descent, such as the 3 to 1 rule, or you can calculate it yourself by using your altitude, distance from the airport and your speed. This question is mostly related to flying airliners on VATSIM though, and for airliners like the Boeing 737 it’s pretty easy: the FMS will come up with a top of descent point (T/D). This is the point at which it’s most convenient to start your descent. ATC will either give you a lower altitude before you reach T/D or you will have to ask for a descent yourself. More about this in the video above!