Bellerphon:
Would your type be the Boeing Whale? That seems like a lot of correction for x-wind. The C-5 was almost exactly 1kt increase in Vmcg for each knot of x-wind, but the 744's engines are considerably further away from the centerline.
This is an interesting topic that, I believe, few line troops understand. I brought this issue up in a training session at my new job and everyone quoted the book answer for Vmcg and passed over the idea that crosswind had any effect on Vmcg. Even on a twin, tail-mounted at that, the effect can be significant at light weights. We can run into a problem far below max. demonstrated crosswind, only about 22 knots of x-wind will do it, based on 0.5 kt/kt x-wind.
GF