I worked at KATL for more than five years before moving on and the only time you saw a water arch being done was for:
1)A pilot is retiring from the airline after many years of service
2)They are retiring the aircraft, i.e. when Delta retired their L1011s and MD-11s.
3)The reception of a brand new aircraft, i.e. the first Boeing 787-8 to ANA in Japan.
Those are the only three reasons I can think of for a water arch or water cannon salute as they call it. But it would be cool to have in FSX.
