Military Wiki
Role Trainer
Manufacturer Fokker
First flight 1924
Primary user Royal Netherlands Army Aviation Group
Number built 31

The Fokker S.IV was a military trainer aircraft produced in the Netherlands in the mid-1920s. It was a conventional, single-bay biplane with staggered wings of unequal span braced with N-struts, essentially a radial-engined development of the S.III. The pilot and instructor sat in tandem, open cockpits and the undercarriage was of fixed, tailskid type with a cross-axle between the main units. The Royal Netherlands Army Aviation Group purchased 30 examples and used them right up to the German invasion of the Netherlands in 1940. On 14 May that year, a few surviving S.IVs escaped to France alongside some S.IX trainers, but never flew again.


General characteristics

  • Crew: Two, pilot and instructor
  • Length: 8.50 m (27 ft 11 in)
  • Wingspan: 11.70 m (38 ft 5 in)
  • Gross weight: 1,020 kg (2,250 lb)
  • Powerplant: 1 × Armstrong Siddeley Mongoose, 82 kW (110 hp)


  • Maximum speed: 150 km/h (93 mph)


  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. pp. 405. 
  • Уголок неба

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