Start was expected on May 21
Boeing announced that the launch of the first manned spacecraft, the CST-100 Starliner, to the International Space Station (ISS) has been postponed indefinitely.
The decision was made together with the US National Aeronautics and Space Administration (NASA). It was previously reported that the developers are busy eliminating a «small helium leak that was discovered in the service module» spacecraft CST-100 Starliner, and the launch of the ship was supposed to take place on May 21.
Initially scheduled to take place on Monday, May 6, the Crew Flight Test mission the mission cancelled the launch approximately two hours before liftoff after noticing that the oxygen vent valve in the Atlas V upper stage called & ;laquo;Centaur» (Centaur) opens and closes quickly. This repetitive action was described by team members as a «buzzing».
The scheduled launch was rescheduled for May 10, however, after ULA decided that the valve needed to be replaced, an operation that required returning the Starliner-Atlas V back to the shop floor, the launch was delayed another week.