[1] This called for an aircraft that could deliver, for example, a 1000 kg (2,200 lb) bomb load over a range of 1,500 km (940 mi), have a maximum speed of 400 km/h (250 mph) at about 4,000 m (1,200 ft) and to be able to reach this altitude in 15 minutes.
[1] The Latécoère 570 was an aerodynamically clean, all-metal low cantilever wing monoplane with two radial engines and a twin tail.
The two 1,125 hp (840 kW) Hispano-Suiza 14Aa engines were conventionally mounted on the forward wing spar with long-chord cowlings, driving variable-pitch propellers of opposite handedness.
The engine fairings extended further rearwards below the wing than above to house the retracted undercarriage legs with their single wheels.
The pilot's enclosed cockpit was slightly behind the leading edge of the wing and a long way behind the nose, restricting his view at take-off.
Construction began at Latécoère's Toulouse works from about April 1937, but during that year the Toulouse-Montaudran region was seriously disrupted by industrial action and it was decided to complete the aircraft at the Bayonne factory.