Register entry
Entry no. 1971-0159
Soyuz 11
The crew of Soyuz 11 were lost during their return on 29 June 1971 (UTC; 30 June Moscow time). Georgi Dobrovolski, Vladislav Volkov and Viktor Patsayev lost their lives when a valve opened as the descent module separated and the cabin lost pressure. The capsule landed intact.
NORAD number5283
International designator1971-053A
Launched6 June 1971
Date (UTC)29 June 1971
Cite as: Orbital Register entry no. 1971-0159, orbitalradar.com/register/1971-0159