The Boeing 747, also known as the Jumbojet, is a large four-engine passenger jet aircraft built by Boeing. The Boeing 747 is the second largest passenger aircraft in the world after the Airbus A380. The production of the Boeing 747 was a major revolution in the passenger aircraft industry at the time and was the world's largest passenger aircraft for forty years. The Boeing 747 with four engines and a two-story structure can carry a maximum of 550 passengers. Unlike the Airbus A380, the second floor in the Boeing 747 is not complete and is limited to the front of the aircraft. (This content is copied from the plane blog) The idea to build the 747 was mooted by Boeing in the mid-1960s, after which the US military entered into a contract with Boeing to purchase a large number of the aircraft to strengthen its fleet. Boeing then announced the design of its passenger model, which resulted in the 1969 100-747 flight, and a year later, in 1970, the 747 began its first service to Pan American. The Boeing 747 gained a special place among the general public and passengers of international flights, and it is not without reason that it was named the Queen of the Skies.

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Credit to @XAircraftManufacturer for his original XJ-40-300