Home » ASN News
Report : Mountain obscured by clouds factor in Twin Otter CFIT accident in Antarctica
22 June 2014
Garmin GNS 430W forward-looking terrain alert and geography advisory and warning criteria (TSB)

Garmin GNS 430W forward-looking terrain alert and geography advisory and warning criteria (TSB)

A Canadian Twin Otter airplane flew into a mountainside in Antarctica after entering an area covered by cloud that likely obscured the view of the mountain, according to an investigation report.

On January 23, 2013, a de Havilland Canada DHC-6 Twin Otter airplane was operated by Kenn Borek Air on a VFR repositioning flight from Amundsen-Scott Station to the Zucchelli Station at Terra Nova Bay, Antarctica. There were three crew members on board.

There was a solid cloud cover in the area and the crew’s view of Mount Elizabeth was likely to have been obscured. The crew probably received a terrain warning 45 seconds before impact. A climb was initiated, but aircraft climb performance was not sufficient to avoid the terrain.

Search and rescue workers made visual contact with the plane’s crash site late at night on January 25.

More information: