Soyuz 2A

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Soyuz 2A is the unofficial designation for a cancelled space flight of a Soyuz spacecraft which would have used the 7K-OK No. 5 capsule, planned to rendezvous with the Soyuz 1 mission. The launch of the craft in April 1967 was cancelled due to thunderstorms, likely saving the three-person crew from the same design problems that also killed the one-person crew of Soyuz 1.^[1]

In the Soviet space program it was usual only for successful launches to gain official designations, so this mission did not receive an official designation and is informally named Soyuz 2A to distinguish it from the later official Soyuz 2 mission, which was launched in October 1968 as an uncrewed docking target for Soyuz 3.