“Any landing you can walk away, is a good landing.”
The following video was shot at Amsterdam Schiphol airport on Jul. 25.
It shows KLM Asia Boeing 777 flying as KLM868 (from Osaka) approaching the runway and landing with a dangerous roll to the right just before touchdown, induced by wind gusts up to 75 mph (120 km/h) measured at the Dutch airport.
As explained back then, a common procedure used with xwind wing gusts is to “crab” the plane (i.e. to apply a WCA, Wind Correction Angle, by aligning nose with the wind direction).
Just before touchdown, the pilot usually reduces the WCA angle in order to prevent landing gear damages by “decrabbing” the plane: this phase is the most dangerous one, as the airplane becomes more vulnerable to the gusts. For this reason, all aircraft apply cross-controls: left rudder, right aileron (if wind is coming from starboard) meaning rudder and aileron in opposite directions.
This doesn’t mean that the aircraft has always to lower the wing on the upwind side, but this may be required to keep the aircraft on the runway even though many experienced pilots landing on dry runway are able to land with levelled wings.