Bloch MB.133 French Bomber Prototype

The Bloch MB.133 was a French bomber prototype based on the MB.131. It introduced a twin tail, and was powered by Hispano-Suiza 14 Aa radial engines. It proved inferior to more modern aircraft. It was converted to the MB 131 standard and handed over to the Air Force.

Following the failure of the MB.133, the Bloch design team developed two improved versions, the MB.134 and the four-engined MB.135.