Osoaviakhim-1
... that in 1934, the Soviet high-altitude balloon Osoaviakhim-1 set a flight altitude record during its maiden flight but crashed during the descent?
... that in 1934, the <a href="./Soviet_Union" id="mwCYM" rel="mw:WikiLink" title="Soviet Union">Soviet</a> <a href="./High-altitude_balloon" id="mwCYQ" rel="mw:WikiLink" title="High-altitude balloon">high-altitude balloon</a> <b id="mwCYU"><a href="./Osoaviakhim-1" id="mwCYY" rel="mw:WikiLink" title="Osoaviakhim-1">Osoaviakhim-1</a></b> set a <a href="./Flight_altitude_record" id="mwCYc" rel="mw:WikiLink" title="Flight altitude record">flight altitude record</a> during its maiden flight but crashed during the descent?