A emptying system, which led to premature depletion of the fuel (kerosene). Without fuel, the turbopump unit went into overdrive, starting to increase its speed beyond the prescribed limit, then the automation issued a command for an emergency shutdown of the propulsion system.

The next launch was partially successful - on August 22, 1964, the satellite was launched into orbit as scheduled, but both redundant parabolic antennas did not fully deploy, which excluded its use for its intended purpose. When