| Version | Summary | Created by | Modification | Content Size | Created at | Operation |
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| 1 | Vivi Li | -- | 1757 | 2022-10-26 01:46:43 |
Commercial Crew Development (CCDev) is a human spaceflight development program that is funded by the U.S. government and administered by NASA. CCDev will result in US and international astronauts flying to the International Space Station (ISS) on privately operated crew vehicles. Operational contracts to fly astronauts were awarded in September 2014 to SpaceX and Boeing. An uncrewed test flight was performed by each company in 2019. Space-X's Crew Dragon Demo-1 flight of Dragon 2 arrived at the International Space Station in March 2019 and returned via splashdown in the Atlantic Ocean. Due to a Mission Elapsed Time anomaly, the Boeing Orbital Flight Test of the CST-100 spacecraft failed to reach the station in December 2019, but completed some test objectives and performed a safe airbag landing in the New Mexico desert two days after launch. Pending completion of the demonstration flights, each company is contracted to supply six flights to ISS between 2019 and 2024. The first group of astronauts was announced on 3 August 2018.