Boeing 247
The first Boeing 247 made its initial flight in 1933. It was 50 percent faster than its competitors, with its sleek, low-wing, all-metal construction; retractable landing gear; and supercharged, air-cooled engines mounted on the wings. It is labeled the first modern airliner, and revolutionized air transportation. This innovative design inspired the creation of a new generation of commercial airliners, beginning with the Douglas DC-2. Later versions pioneered the use of controllable-pitch propellers and wing de-icer boots.
75 Boeing 247s were built, there are four survivors:
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