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Plus Ultra was a Dornier Do J flying boat which completed the first Trans-Atlantic flight between Spain and South America in January 1926 with a crew of Spanish aviators, that included Ramón Franco and Julio Ruiz de Alda Miqueleiz, Juan Manuel Duran and Pablo Rada.
The Plus Ultra departed from Palos de la Frontera, in Huelva, Spain on January 22 and arrived in Buenos Aires, Argentina on January 26. It stopped over at Gran Canaria, Cape Verde, Pernambuco, Rio de Janeiro and Montevideo. The 10,270 km (6,381 mi) journey was completed in 59 hours and 39 minutes. The plane was subsequently donated to the Argentine Navy and was used to deliver airmail. It is currently on display in a museum in the city of Luján, Buenos Aires Province, Argentina.
The flight of the Plus Ultra followed approximately the route taken, in 1922, by the Portuguese aviators Sacadura Cabral and Gago Coutinho, in the first Trans-Atlantic flight over the South Atlantic (from Lisbon, Portugal to Rio de Janeiro, Brazil).
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