2002
Report # 12 
 3 p.m. CST, Friday, Feb. 22, 2002 
 Mission Control Center, Houston, Texas 
 
 The International Space Station Expedition 4 crew returned to normal activities today 
after Wednesday’s successful spacewalk and what largely was a day of rest on Thursday. 
Commander Yury Onufrienko and astronauts Carl Walz and Dan Bursch participated in a 
number of medical tests, including post-spacewalk checkouts for Walz and Bursch.

Also today, Houston’s Mission Control Center and the crew began a transition to new 
software for the station’s computers, a process that is proceeding well and will continue 
with checkouts for several days.

Many of today’s medical tests on crewmembers were done in the U.S. laboratory Destiny, 
in which the crew resumed work early this morning. As a precaution, they had spent 
much of the past 48 hours in the Russian segment while an air freshening system 
removed a musty odor that had spread through U.S. modules Wednesday. The odor 
originated from a Quest Airlock system that was being used to cleanse spacesuit air 
scrubbers Wednesday afternoon. The crew reported few remnants of the smell in the 
station this morning.

Russian flight controllers reboosted the station Thursday using the Progress vehicle 
docked at the rear of the Zvezda living quarters module. The reboost, performed in two 
segments, raised the altitude of the station by a little less than three statute miles to an 
average altitude of about 239 miles.

Information on the crew’s activities aboard the space station, future launch dates, as 
well as station sighting opportunities from anywhere on the Earth, is available on the 
Internet at:

http://spaceflight.nasa.gov

Details on station science operations can be found on an Internet site administered by the 
Payload Operations Center at NASA's Marshall Space Flight Center in Huntsville, Ala., at:

http://www.scipoc.msfc.nasa.gov

The next ISS status report will be issued March 1, or sooner, if developments warrant.