This mission was originally named 'Vykhod ('Exit/Advance'). It almost ended in disaster when Leonov was unable to reenter the airlock due to stiffness of the inflated spacesuit. He had to bleed air from the suit in order to get into the airlock. After Leonov finally managed to get back into the spacecraft cabin, the primary hatch would not seal completely. The environmental control system compensated by flooding the cabin with oxygen, creating a serious fire hazard in a craft only qualified for sea level nitrogen-oxygen gas mixes (Cosmonaut Bondarenko had burned to death in a ground accident in such circumstances, preceding the Apollo 204 disaster by many years).
At 07:30 the state commission meets at the pad and gives the go-ahead. At 8:30 Korolev, Tyulin, Rudenko, and Kamanin observed the cosmonauts donning their suits. At 09:20 they met the cosmonauts again at the pad. After handshakes, the crew went up the elevator, the calm Belyayev being loaded first in the capsule, followed by excited Leonov. Korolev, Gagarin, and the others left the pad for the bunker 10 minutes before the launch. The launch went well, although the suspense in the first 44 seconds of flight (when crew abort was not possible) was unbearable. The final stage shut down at T+526 seconds, and the crew was in orbit. Even though he doesn't smoke, Korolev has a cigarette at T+530 seconds, once he knows the crew is safe in orbit.
The party then moved to the KP command point, where over the next four hours they watched the first man - a Soviet man, Alexei Leonov - enter free space. All operations - airlock deployment, airlock pressurisation, opening the hatch from the spacecraft, entering the airlock, the inner hatch closing, depressurisation of he airlock, opening of the outer hatch, Leonov's exit into space - went well. Television images showed him somersaulting in space, moving 3 to 5 m from the capsule with the earth in the background. There was some worry when the capsule began revolving at 20 degrees per second during the spacewalk, and the high concentration of oxygen (45%) in the cabin. The rotation is stopped, but after consulting with the crew, and considering the large oxygen reserves available, it is decided not to worry about the high oxygen level in the cabin. Kamanin goes to bed at 12:00, overjoyed by the success of the day's events.