Nieuport-Delage NiD 622
Type Single seat fighter
Engine
Dimensions Length 7,64 m , height 3,00 m ,  span 12,20 m , wing area 27,41 m2  ,
Weights Empty 1378 kg, loaded  , max. take off weight 1837 kg 
Performance Max.. speed 270 km/h at 6000 m, cruising speed  , range 900 km, endurance  , service ceiling  8200 m , climb to 4000 m 6 min. 12 sec.
Armament 2 7,7 mm MAC 34 machine guns
Type Werk.Nr Registration History
       
The NiD 622 descends in a straight line from the Nieuport NiD 42, the design of which dates back to 1927. The latter have a big defects in stability which were corrected in part by an increase in the surface of the horizontal stabilizer and the rudder. The machine is more stable, but performance remains very perfectible.
The state commissioned a first batch of 25 machines in January 1928. Under the designation of NiD 62 C1, followed by 100 additional exemplaries in October 1928. Although exceeded by the aircrafts of the new program C1 of 1928, 140 NiD 62 are still ordered for the Military Air Force (Future Air Force), and 50 for the future Naval Aviation.
The Nid 62, despite the modifications, remained centered too rear, and caused several accidents. To solve these problems, the surface of the Upper Wing is reduced, and a new lighter engine, the Hispano suiza 12 Md was mounted on the cell which becomes the NiD 622. 350 NiD 622 will be ordered and delivered between 1931 and 1935 .
Ultimate version, the NiD 629 is equipped with the engine Hispano Suiza 12 Mdsh with compressor, which did not prevent it from being surpassed by aircrafts in service within the Air Force, such as the Morane-Saulnier MS225 or the Dewoitine D500 faster of nearly 100 Km / h.
From 1937, the 233 Nieuport-Delage NiD 62, 622 or 629 were gradually withdrawn from service. 84 of them are assigned to the Regional Air Defense Light Groups (GARALD), the others being distributed in the Fighter Schools.
At the mobilization in August 1939, 107 exemplaries are still present in the Regional Squadrons of Fighter (ERC) which replaced the GARALD. However, they are replaced rapidly by D501, then by "modern" single-engine, Bloch 152 or MS406, when these ERCs give birth to the GC. In addition, some forty machines are still present in North Africa.
Survivors are permanently removed from combat units and will only be used in schools or as liaison units. At the Armistice, 17 Nieuport Delage will be counted, and all will be scrapped soon after
There are some photographs showing three fuselages of NiD 622, at least two of which painted in German colors, in a
hangar at Étampes, wings removed. Their history and precise identification are unknown. One of them still carries the paintings with two Navy tones. The last Nieuport-Delage NiD 622 biplanes from Naval Aviation were transferred to the Air Force in 1936. These planes probably came from an Air Force unit, but were probably no longer in flight when 
German troops.arrived They received these paintings at the same time as very many other planes captured on the land of Etampes-Mond├ęsir