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*International Space Station Status Report #05-54*
*9 a.m. CST, Friday, Nov. 4, 2005*
*Expedition 12 Crew*

The Expedition 12 crew prepared for its first spacewalk and kept the 
international space station ship-shape this week as they passed a 
milestone of five years of human presence aboard the complex.

Following a review by station program management last week, managers 
Thursday gave the green light for the first station-based spacewalk 
using U.S. space suits since 2003. Station Commander Bill McArthur and 
Flight Engineer Valery Tokarev reviewed procedures and prepared tools 
for the spacewalk. It will begin at 9:30 a.m. EST Monday. Coverage on 
NASA TV will begin at 8:30 a.m. EST.

During the 5½-hour spacewalk, McArthur and Tokarev will install a TV 
camera on the station's port truss. The camera will be an important aid 
during future assembly work to add additional truss segments on the port 
side of the complex. They also plan to remove an old experiment from the 
top of the P6 truss, the station's highest point. The experiment 
measured the electrical environment around the station.

During interviews with reporters from ABC and CBS News Wednesday, 
McArthur and Tokarev discussed their upcoming spacewalk and marked the 
fifth anniversary of the start of a permanent human presence on the 
outpost. The first station crew, Commander Bill Shepherd and cosmonauts 
Sergei Krikalev and Yuri Gidzenko, arrived at the complex on Nov. 2, 2000.

During the first half of this week, McArthur and Tokarev focused on the 
maintenance of hardware. Monday they disassembled and measured air flow 
in the Trace Contaminant Control System. The hardware keeps a clean, 
healthy atmosphere by filtering out contaminants in the air. Engineers 
noticed a reduction in the air flow, and after the crew examined its 
components, determined that replacement hardware may need to be 
delivered on a future supply ship. After reassembling the device, the 
system is running at a slightly reduced capacity, complemented by a 
fully operational and complementary system in the Russian segment.

McArthur and Tokarev also replaced a faulty pump in a thermal control 
loop and smoke detectors in the Zvezda Service Module and cleaned 
ventilation filters in the Zarya module.

For information on the crew's activities aboard the station, future 
launch dates, and station sighting opportunities from anywhere on the 
Earth, visit:


The next ISS status report will be issued Monday, Nov. 7, after the 
spacewalk, or earlier if events warrant.

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