Boeing 247

Boeing 247
United Air Lines Boeing 247D in flight
General information
TypePassenger airliner
National originUnited States
ManufacturerBoeing
StatusRetired
Primary userBoeing Air Transport
Number built75
History
Introduction dateMay 22, 1933[1]
First flightFebruary 8, 1933

The Boeing Model 247 is an early American airliner, and one of the first such aircraft to incorporate advances such as all-metal (anodized aluminum) semimonocoque construction, a fully cantilevered wing, and retractable landing gear.[2][3] Other advanced features included control surface trim tabs, an autopilot and de-icing boots for the wings and tailplane.[4] The 247 first flew on February 8, 1933, and entered service later that year.[5]

  1. ^ Cite error: The named reference Bryan p. 109 was invoked but never defined (see the help page).
  2. ^ "Model 247 Commercial Transport." Archived January 18, 2008, at the Wayback Machine boeing.com, 2009. Retrieved: June 14, 2010.
  3. ^ van der Linden 1991, pp. xi–xii.
  4. ^ Bryan 1979, p. 110.
  5. ^ Gould 1995, p. 14.