You are thinking of that the Bavarian Police Helicopter which was a EC135 where during training the Fenestron entered the water. It was explained to me that happened just a short time after the unit in question had converted from the BO 105 to the EC135 where this rescue maneuver had been used but due to the BO's higher tail-rotor and the 135's lower tail-rotor said incident happened.
Thats right, it happend during some high floodings of the river Donau. They rescued a person out of the river and it was filmed by a second EC 135 of the bavarian police. Originally the helicopters mission was to fly around a bavarian minister over the flooded areas. As far as i remember, the inspection of the helicopter afterwards showed no damage...
skadi