Officials say the impact of a Canadian Twin Otter hitting a mountain in Antarctica was not survivable.

It’s not clear when teams may try to recover the bodies of the three men aboard from near the summit of the 44-hundred and 80 metre high Mount Elizabeth.

The plane went missing Wednesday on a flight from the South Pole to an Italian base at Terra Nova Bay.

There were three Canadians aboard the plane operated by Kenn Borek Air of Calgary, including pilot Bob Heath of Inuvik and Mike Denton, a newlywed from Calgary.