All Russia

Crashed in unknown circumstances somewhere in Russia. The pilot, sole on board, was killed.

The crew was performing a transpolar flight from Moscow to New York with intermediate stops in Fairbanks and Chicago. While flying probably over the north part of Siberia, maybe over the Arctic Ocean, the aircraft disappeared after all radio communications ceased. Important SAR operations were initiated but were eventually suspended few weeks later as no trace of the aircraft nor the six crew members was found. Among the six aviators was the famous Soviet aviation pioneer Sigismond Levanevsky.
Crew:
Sigismond Levanevsky, captain,
Nikolai Kastanayev, second pilot,
Nikolai Galkovsky, radio operator,
Grigory Pobezhimov, flight engineer,
Nikolai Godovikov, flight engineer,
Viktor Levchenko, navigator.

Crashed in unknown circumstances somewhere in Russia. The accident occurred in July 1936 (exact date unknown).

Crashed in unknown circumstances somewhere in Russia.

Crashed in unknown circumstances.

Crashed in unknown circumstances somewhere in Russia during the year 1935. The exact date of the mishap remains unknown.

Crashed in unknown circumstances somewhere in Russia during the year 1935. The exact date of the mishap remains unknown.

Crashed in unknown circumstances somewhere in Russia during the year 1935. The exact date of the mishap remains unknown.

Crashed in unknown circumstances somewhere in Russia during the year 1935. The exact date of the mishap remains unknown.

Crashed in unknown circumstances somewhere in Russia during the year 1935. The exact date of the mishap remains unknown.