The EC-135, a twin - engine light helicopter from Airbus Helicopters (formerly Eurocopter)evolved from Germany's MBB BO 108. Eurocopter refined it and got it certified for deliveryin 1996.lts ducted tail - rotor design ensures low noise and high safety. With a 3.5 - tonmax takeoff weight, it cruises at 250 km/h, has a 650 - km range and 4...