|First flight||6 January 1936|
|Primary user||French Air Force|
The D.513 was a single-seat low-wing cantilever monoplane fighter that first flew on 6 January 1936. The D.513 was powered by an 860 hp (641 kW) Hispano-Suiza 12Ycrs1 inline piston engine and had a retractable tailwheel landing gear. Testing proved that the D.513 was unstable and not able to reach the expected speeds and it was rebuilt with a new fuselage and a modified tail unit. The changes did not improve the stability or the maximum speed and problems were also found in the engine cooling and landing gear, and further development was halted. The second prototype was modified with landing gear and a radiator from the D.503. It was redesignated the D.514LP and was used in high-speed parachute trials.
- Prototype with an 860 hp (641kW) Hispano-Suiza 12Ycrs1 inline piston engine.
- Originally intended as the second D.513, it was modified for trials including the fitting of a Hispano-Suiza 12Ydrs2 engine.
Specifications (D.513 revised)
Data from 
- Crew: one
- Length: 7.45 m (24 ft 5 in)
- Wingspan: 12.05 m (39 ft 6 in)
- Wing area: 18.32 m2 (197.2 sq ft)
- Max takeoff weight: 2,446 kg (5,393 lb)
- Powerplant: 1 × Hispano-Suiza 12Ycrs1 inline piston engine, 640 kW (860 hp)
- Maximum speed: 445 km/h (277 mph; 240 kn) at 5100m (16730 ft)
- Climb to 2000m (6560ft) in 2 minutes 35 seconds.
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- Orbis 1985, p. 1440
- The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing.