I would guess that "large transport aircraft" includes passenger versions. And since it's a Russian agency, they most likely include many Antonov incidents. Plenty of them parked along airports around the world, mostly on unprepared runways which, as I tried to mention previously, have no radar control or precision approaches making them inherently more dangerous, not the type of aircraft or pax vs cargo.
And yes, going off runways usually occurs in bad weather with poorer than normal braking action.