First flight of the AB-20 was on January 15, 1932.
Developed by the French company Dyle et Bacalan, Bordeaux, France. After the financial failure of Dyle et Bacalan in 1929, The A.B. 20 reappeared as a Société Aérienne Bordelaise (SAB) aircraft.
Powered by four 500 hp Lorraine 12Ha Petrel engines. Another source, 493 hp Lorraine 12Fb Courlis engines.
Aeroplane Photo Supply No. 2834
