Originally Posted by
stilton
It’s interesting
While crabbing on approach followed by pushing out the drift prior to touchdown with wings level or slight upwind wing down is the most used and recommended technique autoland systems often do it differently, inputting some wing down and opposite rudder well prior to the flare
It is interesting but I think it simply comes down to the Autoland systems not having the capability to judge the crab-decrab method.
What is also inetersting is that it means, on some aircraft, the Auotland has limitations- for instance, the 777 Autoland side-slips, but is limited to 25kts crosswind, because of ground-strike concerns. Crab-decrab is recommended above 25kts and yields a max crosswind limit of 40kts.