The Boeing 747: The Jumbo Jet That Shrank the World

Few machines are as instantly recognisable as the Boeing 747, with its distinctive humped forward fuselage. When it entered service in 1970 it was more than twice the size of any airliner before it, and it reshaped global travel for the next fifty years.

Why it was built

In the 1960s air travel was booming and airports were congesting. Boeing’s answer, championed by engineer Joe Sutter and his “Incredibles” design team, was radical: an aircraft so large it could carry roughly 400 passengers, dramatically lowering the cost per seat and opening long-haul flight to the middle class.

The famous hump

The upper deck and raised cockpit were partly designed so the nose could hinge upward for freight loading — Boeing expected supersonic jets to eventually replace the 747 for passengers, leaving it as a cargo hauler. That prediction proved wrong: the 747 flew passengers for decades, while the freighter role became a bonus rather than its destiny.

Engineering firsts

The 747 was among the first airliners to use high-bypass turbofan engines, which made such a large aircraft efficient and quiet enough to be practical. Its size demanded new manufacturing on a colossal scale — Boeing built the world’s largest building by volume in Everett, Washington, just to assemble it.

Legacy

Over more than five decades, over 1,500 were built in passenger, freighter and specialised versions — including the aircraft that serves as Air Force One. As efficient twin-engine widebodies took over long-haul routes, production finally ended in 2023, closing an era but cementing the 747’s place as one of aviation’s all-time greats.

Frequently asked questions

Why is the 747 called the Jumbo Jet?

Its sheer size compared with everything before it earned the nickname, which stuck as a generic term for very large airliners.

Are 747s still flying?

Yes — many remain in service as freighters and with some passenger airlines, though numbers are declining as newer types take over.

For the wider story, see our history of commercial aviation and the Aircraft & History hub.