Replica of the Voisin "de Caters" N IV in the Royal Military Museum at the Jubelpark, Brussels. The Voisin "de Caters" was the aeroplane used by baron de Caters to accomplish the first official flight in Belgium in 1908 in the Antwerp town of st-Job in 't Goor. The plane was built by the Voisin brothers in their Boulogne Billancourt workshop (Paris), but was equipped with a Belgian made engine.