Canadian Pacific Air Lines Flight 3505

Canadian Pacific Air Lines Flight 3505 was a scheduled flight operated by Canadian Pacific Air Lines for the United Nations from Vancouver, Canada, to Tokyo, Japan. On 21 July 1951, the Douglas C-54 Skymaster, registered CF-CPC, disappeared with 31 passengers and six crew onboard.

Source: Wikipedia — Canadian Pacific Air Lines Flight 3505 (CC BY-SA 4.0)