Accident description
Last updated: 25 October 2014
Status:Final
Date:Wednesday 23 January 2013
Time:22:01
Type:Silhouette image of generic DHC6 model; specific model in this crash may look slightly different
de Havilland Canada DHC-6 Twin Otter 300
Operator:Kenn Borek Air
Registration: C-GKBC
C/n / msn: 650
First flight: 1979-11-13 (33 years 3 months)
Total airframe hrs:28200
Engines: 2 Pratt & Whitney Canada PT6A-34
Crew:Fatalities: 3 / Occupants: 3
Passengers:Fatalities: 0 / Occupants: 0
Total:Fatalities: 3 / Occupants: 3
Airplane damage: Destroyed
Airplane fate: Written off (damaged beyond repair)
Location:Mount Elizabeth (   Antarctica) show on map
Crash site elevation: 3960 m (12992 feet) amsl
Phase: En route (ENR)
Nature:Ferry/positioning
Departure airport:South Pole-Amundsen-Scott Station, Antarctica
Destination airport:Terra Nova Bay-Zucchelli Station, Antarctica
Narrative:
A de Havilland Canada DHC-6 Twin Otter airplane was destroyed when it crashed into a steep snow- and ice-covered mountain slope at 13,000 feet 3960 metres) asl in the Queen Alexandra range in Antarctica. All three crew members were killed.
The airplane operated on a VFR repositioning flight from Amundsen-Scott Station to the Zucchelli Station at Terra Nova Bay, Antarctica. 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.


Findings as to causes and contributing factors:
The crew of C-GKBC made a turn prior to reaching the open region of the Ross Shelf. The aircraft might have entered an area covered by cloud that ultimately led to the aircraft contacting the rising terrain of Mount Elizabeth.

Classification:
Controlled Flight Into Terrain (CFIT) - Mountain

Sources:
» Maritime New Zealand
» CBC
» CADORS
» TSB

Official accident investigation report
investigating agency: Transportation Safety Board (TSB) - Canada
report status: Final
report number: A13F0011
report released:20-JUN-2014
duration of investigation:513 days (1 year 4.9 months)
download report: Controlled flight into terrain Kenn Borek Air Ltd. de Havilland DHC-6-300 Twin Otter C-GKBC Mount Elizabeth, Antarctica 23 January 2013 (TSB A13F0011)

Photos

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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from South Pole-Amundsen-Scott Station to Terra Nova Bay-Zucchelli Station as the crow flies is 2238 km (1399 miles).

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