PZL M-15 Belphegor
![](https://www.thegrizzled.com/wp-content/uploads/2022/04/strangeair6-1-1024x687.jpg)
Here’s the official word, “The PZL M-15 was a jet-powered biplane designed and manufactured by the Polish aircraft company WSK PZL-Mielec for agricultural aviation. In reference to both its strange looks and relatively loud jet engine, the aircraft was nicknamed Belphegor, after the noisy demon.”