One of the first activities undertaken by Fokker after World War II was the design of a new military aircraft for elementary flying training, the S-11 Instructor.

During testing in early 1948 it was found that some aerodynamic changes had to be made to improve the handling of the aircraft.

The Dutch Fokker Four foundation, dedicated to the preservation of the aircraft, operates four S-11s and amongst other activities still performs with them on airshows.

A version of the S-11 fitted with tricycle landing gear, the S-12, was built by Fokker Industria Aeronautica in Brazil, and was used by the Brazilian Air Force as the T-22 Instructor.

[1] The aircraft is a two seat piston-powered monoplane with maximum take of weight of 1100 kg (2425 lb) and a top speed of 209 km/h (130 mph, 113 kts).