![The Aviation Art on Twitter: "Bell H-13 Sioux by Jaroslav Velc The #BellH13Sioux was a single-engine single-rotor light #helicopter built by #BellHelicopter. The H-13 was used as an observation helicopter early in The Aviation Art on Twitter: "Bell H-13 Sioux by Jaroslav Velc The #BellH13Sioux was a single-engine single-rotor light #helicopter built by #BellHelicopter. The H-13 was used as an observation helicopter early in](https://pbs.twimg.com/media/DoHWjszWsAADXNw.jpg)
The Aviation Art on Twitter: "Bell H-13 Sioux by Jaroslav Velc The #BellH13Sioux was a single-engine single-rotor light #helicopter built by #BellHelicopter. The H-13 was used as an observation helicopter early in
![Bell H-13 Sioux. Vector drawing of light observation helicopter. Side view. Image for illustration and infographics. Stock-Vektorgrafik | Adobe Stock Bell H-13 Sioux. Vector drawing of light observation helicopter. Side view. Image for illustration and infographics. Stock-Vektorgrafik | Adobe Stock](https://as1.ftcdn.net/v2/jpg/04/16/39/24/1000_F_416392411_vM4ncK4wcUnRTnjWoBfnmfYcnd5EPSAA.jpg)
Bell H-13 Sioux. Vector drawing of light observation helicopter. Side view. Image for illustration and infographics. Stock-Vektorgrafik | Adobe Stock
![Mutza, W: Bell 47/H-13 Sioux Helicopter: Military and Civilian Use, 1946 to the Present (Legends of Warfare: Aviation) : Mutza, Wayne: Amazon.de: Bücher Mutza, W: Bell 47/H-13 Sioux Helicopter: Military and Civilian Use, 1946 to the Present (Legends of Warfare: Aviation) : Mutza, Wayne: Amazon.de: Bücher](https://m.media-amazon.com/images/I/51qWGuxrJpL._SY498_BO1,204,203,200_.jpg)