I don't fly 'across the pond' all that often ('long haul' is right!), but when I do, I am impressed by the way PF3 simulates OA procedure, SELCAL and so on. Actually I have learnt quite a lot just by using PF3!
However, just as a heads up, if you are interested in learning more about this, there's a great video on YouTube, well worth watching (maybe, as I did, on another PC whilst crossing the Atlantic - Bogota to Madrid in my case today - on my main FS rig. Helps while away the hours.. ).
https://www.youtube.com/watch?v=EJTjwW5ZYas
Hope that's of some interest to some folks...
Martin