South pole rescue mission.

In April on 2001 a team of civilian aviators and medical personnel flew to evacuate and replace an ailing physician at Amundsen-Scott South Pole Station, employing small propeller-driven aircraft to perform an unprecedented flight in extreme conditions . The Twin Otter airframe offered the best chance of getting to and from the Pole in the near-dark with temperatures around - 75 Celsius (-103 Fahrenheit). The rescue was a success!