The Boeing 747 was once the mainstayof almost every airline's long-haul fleet. It was larger, more economical, and had a longer range than any aircraft in the world. But the 747-400 came out over ...

They’re massive pieces of engineering that seem to defy physics as they hang in the air during takeoff and landing, but double-decker passenger airplanes — the Boeing 747 and Airbus A380 ...