Originally Posted by
vilas
Interestingly which big aircraft is only side slip zero crab landing is recommended?
That was my question too. Thanks Vilas.
Partial-to-full decrab during the flare with opposite aileron to keep wings level is pretty much the accepted safe technique for jets 737 and larger in my experience. A SMALL amount of wing-down into wind during or after de-crab can be tolerated to prevent drift (depending on geometry - ok on a 737, not so much on a 747).
This is a cross-controlled landing, but it is not a side-slip landing. You are using the aircraft inertia to maintain runway track just prior to touchdown. This is not a sustainable flight path - that is why it happens late in the flare. It is probably more accurately described as a “skid” just prior to touchdown, not a “side-slip”.