The club owes its name to the battle fought between the forces of Buenos Aires, Argentina (The Porteños) and the Paraguayan army, in the neighbourhood of the Cerro Mbaé (Mbaé Hill) – named after that battle as the Cerro Porteño (Porteño Hill) – on 19 January 1811.
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The Bolivian Air Force ordered 36 examples in 1974, which flew until 1997, and in 1975 the Paraguayan Air Force bought 8 aircraft to replace the Fokker T-21 (S.11).