The film begins with shots of aeroplanes A 12 prepared in a hangar for the strength tests. With bags of sand the workers step by step weight up the wings of the aeroplane. With more layers of weights,...
loading test of the plane´s fuselage
Generals Stanislav Čeček and František Kolařík (on the right)
bags with sand prepared for testing
preparation of wooden construction for testing airplane´s girders
close detail shot of airplane´s motor