N'afọ 1936, Chkalov mere njem ụgbọelu dị ogologo site na Moscow, Soviet Union ruo Vancouver, Washington, United States site na North Pole n'ụgbọelu Tupolev ANT-25 (18<unk>20 June 1937), na-enweghị nkwụsị nke kilomita 8,811.
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