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Originally shared by Gazing Skyward TV

This Day in Aviation History
February 8th, 1933
First flight of the Boeing 247.

The Boeing Model 247 was an early United States airliner, considered the first such aircraft to fully incorporate advances such as all-metal (anodized aluminum) semi-monocoque construction, a fully cantilevered wing and retractable landing gear. Other advanced features included control surface trim tabs, an autopilot and deicing boots for the wings and tailplane.

“Ordered off the drawing board”, the 247 first flew on February 8, 1933, and entered service later that year. Subsequently, development in airliner design saw engines and airframes becoming larger, and four-engined designs emerged, but no significant changes to this basic formula appeared until cabin pressurization and high altitude flight were introduced in the early 1940s with the first pressurized airliner, the 307 Stratoliner….

Source: 
Wikipedia, Boeing 247:   http://gstv.us/20OtPC8

YouTube, Boeing 247:  http://gstv.us/20OtT4L

YouTube, Boeing 247D: http://gstv.us/20OtXBE

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