Well, its still a BK117 on the paper ;-)
But looking through the development of AUM - with not really increased rotor diameter - the downwash is quite more remarkable.
We made trials with high hovering after getting claims about damage done by one go our helicopters - and even experienced pilots were surprised, how much wind is generated in a 200 feet hover.
(Hovering was done above a grass area in front of our hangar (with concrete dispersal) and open hangar doors - and it was windy in the hangar....)