The first flight, by SP-2069, took place in May 1960 at Bielsko but results were not good with poorly performing airbrakes which were unable to limit the airspeed below VNE (Velocity Never Exceed).

This posed a problem as OSTIV (Organisation Scientifique et Technique Internationale du Vol à Voile – International Scientific and technical organisation for gliding) rules for the Standard class in gliding competitions stipulate that speed limiting devices must limit maximum speed to VNE or below.

The SZD-24 Foka prototype was much admired for its performance, elegance, aerodynamically clean lines and comfortable semi reclined flying position.

The fuselage comprised a wooden structure with the cockpit in the extreme nose transitioning with very clean lines to the integral fin at the rear.

The construction methods of the fuselage evolved throughout the series culminating in large panels, formed in concrete moulds, of plywood and PVC foam sandwich giving a very smooth finish, high strength and reduced weight.

[3] Data from The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II[5]General characteristics Performance