Sideslip only (zero crab) landings are not recommended with crosswinds in excess of 17 knots at flaps 15, 20 knots at flaps 30, or 23 knots at flaps 40. This recommendation ensures adequate ground clearance and is based on maintining adequate control margin.
Any idea why the crosswind limits for higher flap settings are higher?
More flaps means less Vref thus slightly higher bank angle needed to keep no crab. Furthermore, the flap fairings are closer to the ground. It doesn't make sense to me
