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The EC 135 is the result of testing a new type of helicopter. At the beginning in 1988 there was the MBB BO 108. By cooperation between the german MBB and the french Aerospatiale (now Eurocopter) the EC 135 was born. The first EC 135 flew in 1991. Because of its new rotor systems (tail rotor system is called fenestron and it reduces the turbulences between main rotor an tail rotor) it is a very low noise helicopter. By Patrick Freitag