The Stampe et Vertongen RSV.28-180 Type III also known as the RSV.28-PSV (for pilotage sans visibilité French for blind flying) was a military trainer aircraft built in Belgium to teach instrument-flying techniques. It was a response to a 1929 order from the Belgian Air Force whose instrument-flying certification required a flight around a 100-kilometre (62-mile) triangular course and return to a point less than 5 kilometres (3 miles) from the start using instruments only.
Made by Stampe et Vertongen.