The PZL M-15 was a jet-powered biplane manufactured by WSK PZL-Mielec in Poland for Soviet agricultural aviation.
For its strange looks and noisy engine it was nicknamed Belphegor, after the noisy demon. Wikipedia
Top speed: 124 mph. Range: 249 mile. First flight: May 20, 1973. Manufacturer: PZL Mielec. Number built: 175