Trans-Canada Air Lines Flight 810 was a Canadair North Star on a scheduled flight from Vancouver to Calgary (continuing to Regina, Winnipeg, and Toronto). The plane crashed into Mount Slesse near Chilliwack, British Columbia, Canada, on 9 December 1956 after encountering severe icing and turbulence over the mountains. All 62 people on board died, making this one of the worst airline crashes in the world at that date; it still ranks as the sixth worst air disaster in Canadian history. The remains are located in a highly inaccessible area and are protected from disturbance.