Koopas Ly wrote:

During a crosswind landing, for instance a left crosswind, you'd lower
the left, upwind wing to counter the right drift induced by the
crosswind.

You'd also use some right rudder to keep the nose straight and prevent
it from "weathervaning".

No, I would use right rudder to keep the nose straight.

Is this "weathervaning effect" caused by your leftward relative motion
due to the left bank OR by the rightward crosswind ITSELF?

Weathervaning is *always* caused by the wind. That's the source of the name of
the effect.

Next thing I was wondering, which is related to the above: say you're
dead on centerline on landing, and all of a sudden a crosswind from
the left starts blowing. The effect would be that you should only be
displaced to the right of runway centerline. Your airplane nose would
still be parallel to the centerline. Do you agree?

Depends on my airspeed. If I'm close to touchdown, my aircraft will turn into
the wind. Regardless of speed, it will also drift.

George Patterson
If you're not part of the solution, you can make a lot of money prolonging
the problem.