The plane was operated by Calgary-based Kenn Borek Air and was manned by a Canadian crew when it crashed Wednesday.
All three crew members were killed, including pilot Bob Heath from Inuvik and Mike Denton from Calgary. A third crew member has not been identified.
Search crews called off plans to recover the bodies on the weekend, saying conditions are too dangerous.
The Transportation Safety Board of Canada said Monday that a search and rescue team was able to recover the cockpit voice recorder and it is being flown to a TSB laboratory in Ottawa.
A Canadian investigation team is gathering other information on the crash as well.
A memorial service was held in Antarctica on Monday to honour the three men.
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