The wide-bodied Boeing 747 was once known as the queen of the skies, an instantly recognizable behemoth revered for its luxury and spaciousness.
As time passed, however, the original jumbo jet was outstripped by more efficient twin-engine planes.
Now the 747’s days as a passenger plane are numbered. Delta and United — the last two U.S. airlines that fly 747s — have said they will retire those planes from their fleet by the end of the year, 48 years after the jet first took flight.
Today, Boeing Co. produces just six 747s a year. The Chicago-based aerospace giant says it is eyeing the cargo market for new customers.
The winding-down of 747 production is a reminder...