Avia BH-21

Rarity: Common

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At a glance

Class

Invention

Domain

Science and technology

Knowledge cost

3

In collections

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What Wikipedia says

The Avia BH-21 was a fighter biplane designed and produced by the Czechoslovak aircraft manufacturer Avia. First flown in January 1925, it served an important role in securing Czechoslovak national security during the Interwar period.

Excerpt from the Wikipedia article “Avia BH-21”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Unknown author, Public domain, via Wikimedia Commons.