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Technical Specifications
Type (Potez 671)
Two-seat Fighter bimotor
Date first flight
March 30, 1939
15.10 m
10.80 m
3.27 m
Wing Area
32.50 m²
Empty Weight
3186 kg
Max. Takeoff Weight
4726 kg
Cruising Speed
412 km/h
Maximum Speed
500 km/h
Climbing Speed
Service ceilling
10000 m
2000 kms
2 Men
2 Radial Engine Gnôme & Rhône 14M-3 14 Cyl. air cooling of 670 Hp (Potez 670)
2 Radial Engine Hispano-Suiza 14AB 12/13 14 Cyl. air cooling of 800 Hp (Potez 671)
2 cannons HS 404 of 20mm on the nose
1 canon HS404 in dorsal turret
2 machine-guns MAC 43 of 7.5 in ventral position



Only one specimen was built.



The Potez 670 has been designed to meet a specification for a triple fighter with a minimum range of three hours at 90% of its maximum speed. The all-metal construction, the Potez 670 is derived from Potez 630 and 631. The fuselage is identical, but the wing is of new design. The wheels are now fully integrated into the engine nacelles. The prototype is powered by two Gnome-Rhone 14M of 690hp. The armament consists of two 20 mm Hispano-Suiza HS-404 guns and two MAC 1934 7.5 mm machine-guns, and a Hispano-Suiza HS-404 cannon in a rear turret.

The aircraft made its first flight on March 30, 1939, but the performance is disappointing with the engine retained. The Potez 670 thus receives new Hispano-Suiza 14AB 12/13 800 bhp engines and then takes the designation of Potez 671-01. Thus motorized, it resumed its tests in July 1939. This time, the performances are satisfactory with especially a top speed of 500 km / h. In the meantime, the requested configuration becomes a two-seater fighter. An order for 40 Potez 671 C2 is launched, but none of the aircraft will be manufactured before the Armistice. The prototype is destroyed during the German advance.


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