1syuzh. - Tests of the new stratospheric balloon "USSR" manufactured at the plant. Menzhinsky. The designer of the gondola - V. A. Chizhevsky checks the instruments installed in the gondola. The first flight of the stratospheric balloon. 2syuzh. - Testing of fire extinguishers charged with carbon dioxide. 3syuzh. - Tests of the new aircraft "G-10", designed by the designer Gribovskiy V. K. 4syuzh. - New road car - grader on the way. 5syuzh. - Testing an apparatus for rescuing the crew of a sunken submarine.