In 1952, the Air Force started flying to supply the Antarctic scientific bases using ski-equipped Douglas C-47s and establishing Marambio Base on 25 September 1969. Previously, President Juan Perón had created the Antarctic Task Forces (FATA, "Fuerzas de Tareas Antárticas") for this purpose. On April 11, 1970, they began operating C-130 Hercules aircraft into the Antarctica. The first flight to land in Marambio Base was on board the one registered TC-61, commanded by Commodore Arturo Athos Gandolfi. The Fokker F-28 Fellowship presidential aircraft T-01 "Patagonia" is reported to be the first jet to have landed there, on July 28, 1973. Since the 1970s, DHC-6 Twin Otters have also been deployed.