Text Size

Williams, Hoshide Complete MBSU Installation
Spacewalkers Aki Hoshide and Suni Williams

Spacewalkers Aki Hoshide and Suni Williams work outside the International Space Station. Credit: NASA TV

MBSU Cleaning Tools

MBSU cleaning tools that were used during installation. Credit: NASA TV
› View large picture

Flight Engineers Suni Williams and Aki Hoshide completed their second spacewalk in less than a week at 1:34 p.m. EDT Wednesday, Sept. 5. They completed the installation of a Main Bus Switching Unit (MBSU) that was hampered last week by a possible misalignment and damaged threads where a bolt must be placed. They also installed a camera on the International Space Station’s robotic arm, Canadarm2.

Flight Engineer Joe Acaba operated the Canadarm2 and monitored the spacewalkers from inside the International Space Station. Hoshide rode the Canadarm2 attached to a portable foot restraint to the MBSU worksite.

Wednesday’s spacewalk lasted 6 hours and 28 minutes.

› View EVA briefing graphics from Aug. 14

Williams' and Hoshide's previous spacewalk on Aug. 30 lasted eight hours and 17 minutes making it the third longest in U.S. spaceflight history. It was originally scheduled for 6.5 hours before mission controllers and the astronauts struggled to install the MBSU.

› Read more about the Aug. 30 spacewalk
› View post-EVA briefing graphics from Aug. 30

Suni Williams surpassed Peggy Whitson during the Sept. 5 excursion for total cumulative spacewalk time by a female astronaut. Whitson worked outside for 39 hours and 46 minutes over the course of six spacewalks. Williams has conducted six spacewalks for a total of 44 hours and 2 minutes.

› Read more about Expedition 32
› Expedition 32 Mission Summary (4.7 MB PDF)