Descent takes about 20 mins = one third of an hour - use one third of descent wind component to correct.
So in this case, tailwind 50 kt - go down 17 miles early - this is what we used to do/teach before we had all this fmc stuff and did it manually (btw very well) and it worked fine!
ps we didn't use the speedbrake either - that was for atc use!
Last edited by fireflybob; 5th Jul 2011 at 12:32.