There was a piece, where the pilot explained why airports are not in favor of accepting AN225 for landing and takeoff on theirs runways: they have to check the runway surface after landing/takeoff. but even more crucial (not now, but in those times) is that suitable for landing airports are in most cases are those with high throughput of aircrafts and tight schedule and according to the international safety regulations it is possible give permittion for the next takeoff only after 7-10 min due to turbulent wake(is it the right term?). while common passenger flights have an interval of 30 sec