Boeing 247 Engine and Propeller

View of an engine and propeller of an airplane.

 

Justly labeled the first modern airliner, the Boeing 247 revolutionized air transportation when it entered service with United Air Lines in 1933. The Boeing 247 was 50 percent faster than its competitors. Its innovative design launched a new generation of commercial airliners, notably the Douglas DC-2. Highlighted in this image are the engine and propellers of the Boeing 247.