mbucholski wrote on Dec 12^th, 2011 at 2:20pm:

It's pretty much how they do it. Also in real life you are restricted by atc clearances, so approx. 10 nm before T/D you would normally call them with "ABC123, ready to descend" and they will give you a certain FL that is not necessarily predicted anywhere on the LEGS page (as a constraint).

If using FSX ATC, you will need to add a new lower altitude at about 150nm to go to the destination so you can descend as soon as the ATC asks you too (then set the altitude to the ATC FL given to you). I have noticed that in the heavies, ATC will ask you to descend when you are somewhere around the 3x rule (e.g. 90nm when at FL300, 110nm @ FL360).

Mark