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.
Made by Fokker.