I have problem on the followings and looking for some advises1. For very long waypoint with A/P, e.g. NAT 5050N - 5140N - .....which is 300nm+, the plane fly off the centre line and deviate as large as 30nm+, is it normal?2. I have problem entering airways with airport name, e.g. B330 end at UNWW, what should I do.Thanks for anybody's help.Esmond

Hi thats a problem i have encounterd as well the most simple way is the enter a waypoint as far as possible on the B330 airway. Then put a direct to UNWW then after UNWW one more direct i belive then continue on the assigned airway (B300 to the next assigned waypoint on flightplan).The most simple way to do this is if u have fsnavigator then you can look up the airway and the waypoints on them.The deviation i have not encounterd so cant help you there sorry.Kind regards:Alexander

Got it and thanks for the help.Esmond