In addition to passenger 747s, Boeing also produced a huge number of cargo 747s, many of which are still flying for various shipping companies. So, you might be able to spot a 747 over in the ...

While the 747 remains one of aviation's most beloved aircraft, its future has become a question of practicality. The supersonic dreams Boeing once bet on never materialized in a meaningful way.

Today, with hindsight being 20/20, we know how the Boeing 747 revolutionized air travel. But that was anything but a sure thing back when it was still on the drawing board in the mid-1960s.