Ekola: . .As you are interested in A320:. .For TO we have no headwind limit, the headwind limitations we have are for the automatic approach and the automatic landing (automatic approach means following the ILS on a/p and autothrust). Also there is a difference between A319/20/21:. .. .A321: autoapproach 40 kts headwind; autoland 30kts headwind. .A320: autoland (managed speed) 30 kts headwind; autoland (selected speed) 20 kts headwind. .A319: autoapproach/landing both 30 kts headwind max. .. .For manual flight there are no headwind limitations, except offcourse common sense.