page_title: Bloch MB.131
section_title: Variants
hierarchical_section_title: Bloch MB.131 / Variants
caption_attribution_description: Polski: Francuski samolot bombowy Bloch MB.133.
context_page_description: The Bloch MB.130 and its derivatives were a series of French monoplane reconnaissance-bombers developed during the 1930s. They saw some limited action at the beginning of World War II but were obsolete by that time and suffered badly against the Luftwaffe. After the fall of France, a few were pressed into Luftwaffe service.
context_section_description: MB.130.01
  Original prototype, 2x Gnome-Rhône 14Kdrs engines.
  MB.131.01
  First prototype, 2x Gnome-Rhône 14N-10.
  MB.131.02
  Second prototype with revised wings, tail, and fuselage
  MB.131R4
  Initial versions with one central machine gun, 13 built. Note: Breffort and Joiuineau say that 14 R4 aircraft were built.
  MB.131Ins
  Dual control instructor version, 5 built.
  MB.131RB4
  Four-seat reconnaissance-bomber aircraft. Internal bomb bay and revised equipment. 121 built, including two prototypes refitted to this standard. Note: Breffort and Joiuineau say that 100 RB4 aircraft were built.
  MB.133
  Prototype with redesigned tail, 1 built.
  MB.134
  Prototype with two 820 kW (1,100 hp) Hispano-Suiza 14AA engines, 1 built.
  MB.135
  A four engined derivative of the MB.134, powered by four 530 kW (710 hp) Gnome-Rhône 14M 14 cylinder radial engines.
  MB.136
caption: Bloch MB.133 prototype
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