Expedition 32 astronauts Suni Williams and Aki Hoshide performed an 8 hours 17 minutes spacewalk on 30 August. However, the pair failed to install the main bus switching unit No 1 (MBSU No 1) replacement after a bolt would not drive home. The failure to do this has meant that two of the eight main solar arrays can not be used to power the space station. A new spacewalk is now planned.
International Space Station has partial power loss after spacewalk fails to replace switching unit
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