Soyuz MS-10
Expedition 57 Launch (NHQ201810110004).jpg
Launch of the Soyuz-FG rocket carrying the MS-10 spacecraft
Operator Roscosmos
Mission duration 36 minutes[1]
Orbits completed Failed to orbit
Spacecraft properties
Spacecraft type Soyuz-MS 11F747
Manufacturer RKK Energia
Crew size 2
Members Aleksey Ovchinin
Nick Hague
Callsign Burlak
Start of mission
Launch date 11 October 2018[2][3]
Rocket Soyuz-FG
Launch site Baikonur Pad 1/5
End of mission
Landing date 11 October 2018
Landing site 20 km east of Jezkazgan, Kazakhstan


Soyuz programme
(Manned missions)

Soyuz MS-10 was a manned Soyuz MS spaceflight which aborted shortly after launch on 11 October 2018[2][3] due to a failure of the Soyuz booster rocket.[4][5] MS-10 was the 139th flight of a Soyuz spacecraft. It was intended to transport two members of the Expedition 57 crew to the International Space Station. A few minutes after liftoff, the craft went into contingency abort due to a booster failure and had to return to Earth. By the time the contingency abort was declared, the Launch escape system (LES) had been ejected and the capsule was pulled away from the rocket using the back-up motors on the capsule fairing.[6] Both crew members, Roscosmos cosmonaut Aleksey Ovchinin and NASA astronaut Nick Hague, were recovered alive in good health.[4] The MS-10 flight abort was the first instance of a Russian manned booster accident at high altitude in 43 years, since Soyuz 18a similarly failed to make orbit in April 1975.[5]


Position Crew member
Commander Russia Aleksey Ovchinin, RSA
Expedition 57
Second spaceflight
Flight Engineer 1 United States Nick Hague, NASA
Expedition 57
First spaceflight

Backup crew

Position[7] Crew member
Commander Russia Oleg Kononenko, RSA
Flight Engineer 1 Canada David Saint-Jacques, CSA


Launch and abort

Flight crew during launch (left) and debris falling from the Soyuz-FG launch vehicle after booster separation (right).

A few minutes after liftoff, which took place at 08:40 UTC, the crew reported feeling weightless, and mission control declared a booster had failed. According to Sergei Krikalyov of Roscosmos, the primary cause of the failure was a collision that occurred during the separation of the carrier rocket’s first and second stages. "A deviation from the standard trajectory occurred and apparently the lower part of the second stage disintegrated," he said.[8] Shortly after, a contingency was declared and the spacecraft carrying the crew performed an emergency separation, returning to Earth in a ballistic trajectory, during which the crew experienced "about six to seven times Earth's gravity" followed by a successful landing.[9] The abort occurred at a velocity of roughly 1,800 m/s (5,900 ft/s) or more than 4,000 MPH[citation needed] and an altitude of approximately 50 kilometres (31 miles).[10]


The crew wearing blood pressure cuffs and pulse oximeters following their recovery (left) and later greeting their families in Baikonur (right).

At 08:55 UTC the search and rescue team was deployed to recover the crew and the spacecraft which had landed 402 kilometres (250 mi) from the launch site and 20 kilometres (12 mi) east of Jezkazgan, Kazakhstan.[11] Approximately 25 minutes after the search and rescue team took off, NASA announced they were in contact with Ovchinin and Hague. NASA TV broadcast photographs of the crew undergoing medical tests and apparently healthy at Jezkazgan Airport at 12:04 UTC.[12] The crew flew to the Baikonur Cosmodrome to meet their families[13] before leaving for Moscow.[14]


Following the aborted spaceflight, the Russian government announced that all future manned Soyuz launches would be suspended. Roscosmos ordered a full state commission to investigate the incident,[15] and the BBC reported that a criminal investigation is also expected.[16]

A few weeks prior to the failed launch, another investigation had commenced into how a hole came to be drilled into the wall of the Soyuz MS-09 capsule that is now docked at the International Space Station.[17]

The current crew of the International Space Station has been informed of the failed flight (according to NASA live voice-over). The ISS crew can return safely in the Soyuz MS-09 capsule, but only until about late-December 2018, due to the limited lifespan of "about 200 days" of the Soyuz capsule; under existing plans, they would have to leave by mid-December.[18] If the investigation concludes with the grounding of the Soyuz, the ISS may be abandoned until the Commercial Crew Program receives proper certification; this may result in the lack of maintenance of the ISS, but "ground controllers could keep it up and running for a while".[19] Within a day of the incident Dimitry Rogozin, chief of Roscosmos, said that their plan is for Ovchinin and Hague to fly again in early 2019.[20]


See also