Bell H-13 Sioux

Rarity: Common

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Invention

Domain

Science and technology

Knowledge cost

6

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What Wikipedia says

The Bell H-13 Sioux is an American single-engine light helicopter built and produced by Bell Helicopter for the military and licence-produced by Westland Aircraft for the British military as the Sioux AH.1 and HT.2. It was the first helicopter to be certified for civil use.

Excerpt from the Wikipedia article “Bell H-13 Sioux”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Auteur inconnu, Public domain, via Wikimedia Commons.