Originally Posted by
Gertrude the Wombat
You calculate crosswind on final and compare with any limits you have to obey, yes. Otherwise you might land (perfectly safely but) outside limits. How else can failing to break any such rules be achieved?
If the crosswind is one knot outside limits I ask for a "wind check" at intervals on final until I get one that's one knot inside limits, then I don't ask any more. Doesn't everyone do that?
But you know that limit before you turn final, don't you? So the actual math has been done.
In our opspecs we are not allowed to start an approach unless weather is inside our tolerances.