I believe it all comes down to the incident in Germany at an Airshow a few years back (please correct me if i am wrong there) but basically i think all airshows in Europe stopped the aircraft overflying the crowdline purely to give the extra safety margin for escape and protection of life in case of an emergence, however i do remember reading somewhere thats the Reds has special right thats allowed them to arrive over the crowd but that could be wrong as i read it on another forum!