A two-seat braced low-wing sports monoplane of 1931-2 with fixed undercarriage, design by Cesare Pallavicino.
Ba.33 Serie 1:
Engine: 1 x 130 hp DH Gipsy III
Ba.33: Serie 2
Engine: 1 x DH Gipsy II 4-cyl or 130 hp Colombo S.63 6-cylinder
Ba.33S
Version with enlarged cabin
Engine: 1 x 130 hp Colombo S.63
All Aero 