Aleksandr Ivanchenkov

Aleksandr Sergeyevich Ivanchenkov (Russian: Алекса́ндр Серге́евич Иванче́нков; born 28 September 1940 ) is a retired Soviet cosmonaut who flew as Flight Engineer on Soyuz 29 and Soyuz T-6, he spent 147 days, 12 hours and 37 minutes in space.