NASA STS-135 Report #19 Sunday, July 17, 2011 – 3 p.m. CDT

Mission Control Center, Houston, Texas

HOUSTON – Moving days aboard the International Space Station are nearing completion for the station and shuttle crews.

The 9,400 pounds of equipment and supplies brought up by the multi-purpose logistics module have been moved to the International Space Station. The loading of Raffaello with almost 5,700 pounds of unneeded station equipment and trash also is almost finished.

The Raffaelo module is scheduled to be unberthed early Monday from the station’s Harmony node and secured in Atlantis’ cargo bay for the ride home. At the controls of the station’s Canadarm2 will be Atlantis Mission Specialist Sandra Magnus, who served as load master for the complex and demanding cargo transfer, and Pilot Doug Hurley.

After their midday meal today, Magnus and Commander Chris Ferguson worked a little over an hour continuing to move experiments and equipment to and from Atlantis’ middeck. That done, the shuttle crew had most of the afternoon off.

Mission control data processing experts declared Atlantis’ General Purpose Computer 4 to be healthy after its Thursday shutdown. It is back in operation in its normal role of shuttle systems management. GPC 1 remains the guidance, navigation and control computer while GPCs 2 and 3 are in standby.

Beginning about 5:10 a.m. CDT, Hurley and Mission Specialist Rex Walheim answered questions from NASA Explorer Schools students. It was the last opportunity for shuttle crew members to respond to students’ questions.

The next status report will be issued after the crew’s 9:29 p.m. Sunday wakeup or earlier if warranted.