It is still somewhat important to realize that the technique used by the Lufthansa pilots isn't the one and only crosswind landing technique available.
What I mean is if Joe Blow with his Private License who hasn't flown in awhile goes and rents a 172 and ends up planting it in a crosswind the Lufthansa guys did, because he saw a youtube video, he is probably going off the runway.
The above technique is more for the heavies, and is a bit of a physics lesson, even though the nose is pointed at a significant angle off the runway, the forward momentum of the plane is such that once they touch down on a dry hard runway the plane will straighten, with some help from the rudder.
If a large 4 engine aircraft attempts the sideslip technique in a strong crosswind, the bank angle required to keep the aircraft aligned with the runway is so much that a wing or engine strike is possible.
The most common technique is to crab into the wind to a suitable height, then prior to the flare, kick the rudder to straighten the nose and use opposite aileron to counteract drift. Then touchdown the upwind main gear first and let the opposite gear down easily and maintain inputs on the rollout.
And yes I agree, that was a nice job by the Lufthansa dudes (or ladies)
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