Soyuz-TMA 7

Cosmonauts:
    Upload:
        Valeri I. Tokarev [2], Commander
        William S. McArthur, Jr. [4], Flight Engineer (USA)
        Gregory Hammond Olsen [1] (Space Tourist, USA)
    Download: (proposed)
        Valeri I. Tokarev
        William S. McArthur, Jr.
        Macros C. Pontes
Backup:
    Mikhail V. Tyurin
    Jeffrey N. Williams
    Sergei V. Kostenko (Space Tourist, Russia)
Launch:
    Date: 1 October 2005
    Time: 03:54 UTC
Landing:
    Date: 8 April 2006
    Time: 23:48 UTC
Duration: 189 days, 19 hours, 54 minutes
Docked: 3 October 2005 - 8 April 2006
Call Sign: Rassvet (Dawn)

Soyuz-TMA 7 was the replacement for Soyuz-TMA 6. The Soyuz is used as a lifeboat for the ISS. Because of fuel degradation, the Soyuz needs to be replaced every six months.