STS-104 Mission Control Center Status Report #10 Monday, July 16, 2001 – 6 p.m. CDT

The shuttle and station crews will spend today continuing to set up and test the newly attached Quest
station airlock, troubleshooting a suspected leaky ventilation valve, and preparing for the mission’s second
and third space walks, planned for Tuesday and Thursday evening.

Mission Specialist Janet Kavandi will assist Expedition Two Flight Engineer Jim Voss in troubleshooting the
suspected leak in an Intermodule Ventilation (IMV) assembly. The IMV Assembly, a series of fans and
valves that circulate air between station modules, connects the Quest airlock to the station’s environmental
control and life support system. The two astronauts will examine the valve seals for any debris or damage
and determine if the valve will have to be replaced. Should replacement be necessary, a spare valve is
available aboard the station.

Meanwhile, Atlantis Commander Steve Lindsey and Expedition Two Flight Engineer Susan Helms will test
oxygen lines between the station and the airlock. The lines will be used during future shuttle missions to
replenish the airlock’s high-pressure oxygen tanks with shuttle-supplied oxygen.

The Atlantis crew was awakened for their sixth day in space at 4:19 p.m. today by the song “Nobody Does it
Better” performed by Carly Simon, played by Mission Control for Mission Specialist Jim Reilly. The
International Space Station crew of Commander Yury Usachev, Voss and Helms are in their 131st day in
space.

Atlantis’ space walkers Mike Gernhardt and Jim Reilly will spend today preparing for their two remaining
space walks. They will review plans and set up equipment in both Atlantis’ airlock and the station airlock.
The second spacewalk, to begin Tuesday evening, will originate from Atlantis while the third spacewalk, to
begin Thursday, will be the first to originate from the station’s new Quest airlock. Both of the remaining
space walks will focus on the installation of high-pressure oxygen and nitrogen tanks on the exterior of the
Quest airlock.

Lindsey, Atlantis’ Pilot Charlie Hobaugh and Usachev will take a break from their work at 11:34 p.m. CDT for
a 20-minute interview by news reporters from CBS, Space.com and KNBC-TV of Los Angeles.

The next mission status report will be issued about 6 a.m. Tuesday or as events warrant.