" Bell Helicopter produces helicopters for commercial, military and emergency service use. They were the first company to obtain certification for a commercial helicopter. Bell Helicopter has so far delivered more than 35,000 helicopters around the world. Their most popular models include the Bell 206, 407, 421 and 429 models. Bell Helicopter have also invented the tiltrotor aircraft. These unique aircraft lift like a helicopter, then fly like an airplane with twice the speed, three times the payload and five times the range of traditional helicopters. Aerospace and aircraft will never be the same. "