Karl Mannström

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Karl Mannström (26 October 1884 – 19 July 1916) was a Swedish modern pentathlete who competed at the 1912 Summer Olympics. He was born in Sundsvall, Sweden. He became an officer in the Swedish Army's Fortification in 1909 and was promoted to lieutenant in 1912. In 1915 he trained as a pilot at Malmslätt and earned Swedish aviator diploma No. 28 after certificate tests on June 22, 1915. In 1916 he set a Scandinavian altitude record with passengers, reaching 4,000 meters. He died in a plane crash just outside Skillingaryd while flying a Morane-Saulnier aircraft licensed by Thulin's workshops.