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EXP 10 STATUS - 17 MARCH 2005

Submitted by Arthur N1ORC - Amsat A/C #31468

* Crew Preps for Spacewalk*
The Expedition 10 crew worked in the International Space Station's Pirs 
Docking Compartment on Thursday. An airlock in Pirs will be the exit 
point for an upcoming spacewalk, so the crewmembers loaded it with 
equipment and tools they will use during the excursion.

During the March 28 spacewalk, the crew will install antennas and 
lighting on the exterior of the Zvezda Service Module. The new equipment 
will be used during the 2006 arrival of the first Automated Transfer 
Vehicle cargo craft. Mission managers will discuss the event during a 
news briefing 
Friday at 1 p.m. CST (1900 GMT). Watch it live on NASA TV 

Also on Thursday, Expedition 10 Commander Leroy Chiao and Flight 
Engineer Salizhan Sharipov successfully repaired a valve in the 
Station's toilet.

The Elektron oxygen generating system, which provides oxygen to the 
Station's crew compartment, has been working off and on since last 
Friday. It shut down early Thursday morning but was successfully 
restarted a few hours later.

A Control Moment Gyroscope, or CMG, shut down early Wednesday after a 
circuit breaker tripped. Two other gyroscopes are maintaining the 
Station's orientation, and additional thrusters on the Russian side of 
the orbital outpost can provide steering control if necessary. When 
Space Shuttle Discovery visits the Station, spacewalkers will repair a 
third CMG and deliver several more as spares to be installed as necessar
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