OSOAVIAKHIM was a giant stratosphere balloon that flew on January 30, 1934, and reached 22 000 meters. The crew was killed when the cabin was covered with thick ice, resulting in it tearing loose from the balloon and crashing to the earth during the descent.

• 1934 January 30 - OSOAVIAKHIM giant stratosphere balloon reached 22 000 meters. - Apogee: 22 km (13 mi).
  The crew was killed when the cabin was covered with thick ice, resulting in it tearing loose from the balloon and crashing to the earth during the descent.