The Boeing 747 is the 2nd largest passenger jet today. It is commonly reffered to as the "Jumbo Jet". It was in a race competing for Boeing to make a large over-seas aircraft that is easy to maintain. The 747-100's powerplants are 4 General Electric CF-6 turbines. The 747 is probably the most recognizable aircraft ever, because of the hump on the front of the aircraft.