After the Argentine Navy successfully completed their flight to
the South Pole [in January 1962] the Argentine Air Force attempted to duplicate the
feat and reach the South Pole, on the first attempt (date unknown) their DC-3 caught
fire on take-off; no lives were lost. The second and
successful attempt was made by a DC-3 fitted with DC-4 engines and a
jet propulsion unit located in the tail...
Argentine Air Force Flies to South PoleThe 800-mile flight from Belgrano took about 8 hours. The arrival of the two Beaver aircraft marked the first single-engine fixed-wing landings at Pole. The Beavers did not continue to McMurdo, but waited at Pole because of the cold (-60°F/-51°C).
Later in the summer, an Argentine Army ground expedition arrived. This was Operación 90°, the first Argentine ground expedition to the South Pole, led by then-Colonel Jorge E. Leal. The venture was scientific, but it also was intended to confirm Argentina's claim to their segment of Antarctic territory...accordingly it was conducted with some measure of secrecy.
The ten-man round-trip traverse left from Belgrano on 26 October and reached Pole on 10 December. One comment on the trip by Jorge Leal was that the group encountered a radar operator from the United States who (since the secret visit was unannounced) asked them who they were and what they were doing there. After it was determined who they were, they were invited to dinner at Pole -- the first good food, said Leal, that the group had had in some weeks.
After 2 days at Pole, the team headed back to Belgrano, which they reached on 31 December.
[Some of this information is from a 5th anniversary stamp cover which Argentina issued in 1971. The map image at the top of this page is the first page of the cover folder; here's the interior pages and the back page (Spanish text).