Twin...
On April 24–25, 2001, two Twin Otters performed the first winter flight to Amudsen-Scott South Pole Station to perform a medical evacuation. On June 21–22, 2016, Kenn Borek Air's Twin Otters performed the third winter evacuation flight to Amudsen-Scott South Pole Station to remove two people for medical reasons.The Argentine Air Force has used the Twin Otter in Antarctica since the 1970s, with at least one of them deployed year-round at Marambio Base. The Chilean Air Force has operated the type since 1980, usually having an example based at Presidente Frei Antarctic base of the So