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Jessica Rye
Kennedy Space Center, Fla.

NASA's Space Shuttle Processing Status Report
Note: NASA's Kennedy Space Center issues Space Shuttle Processing Status Reports periodically and is the source for information regarding processing activities associated with the vehicles and payloads. If you are a member of the media and would like further information, visit:

Mission: STS-117 - 21st International Space Station Flight (13A) - S3/S4 Truss Segment Solar Arrays
Vehicle: Atlantis (OV-104)
Location: Launch Pad 39A
Launch Date: Targeted for March 15, 2007
Launch Pad: 39A
Crew: Sturckow, Archambault, Reilly, Swanson, Forrester and Olivas
Inclination/Orbit Altitude: 51.6 degrees/122 nautical miles

The STS-117 crew arrived at Kennedy Space Center Wednesday to participate in the Terminal Countdown Demonstration Test (TCDT), a launch dress rehearsal. The rehearsal includes emergency egress training at the launch pad and a practice run of the final launch countdown, during which the crew climbs aboard Atlantis and executes the checklist for the final hours of the simulated countdown.

Earlier in the week, the STS-117 payload was installed into Atlantis' cargo bay. In addition, technicians continued their preparations for the hypergolic propellant load, scheduled for next week. Shuttle interface testing and validation testing of launch pad systems are also under way.

Mission: STS-118 - 22nd International Space Station Flight (13A.1) - S5 Truss Segment
Vehicle: Endeavour (OV-105)
Location: Orbiter Processing Facility Bay 2
Launch Date: Targeted for June 28, 2007
Launch Pad: 39A
Crew: Kelly, Hobaugh, Williams, Morgan, Mastracchio, Caldwell and Anderson
Inclination/Orbit Altitude: 51.6 degrees/122 nautical miles

Endeavour remains in Orbiter Processing Facility bay 2, and technicians continue preparing the vehicle for its first launch in more than four years. The vehicle has undergone an extensive modification period, including the addition of all of the return-to-flight safety upgrades added to both Discovery and Atlantis.

This week, technicians completed preparations for the mating of the aft orbital maneuvering system pod to the reaction control system. Final mate and interface verification is scheduled for the weekend. Work is also under way to prepare the orbiter for installation of the orbiter boom sensor system, which is a robotic arm extension. Final testing of the orbiter's fuel cells was completed this week.

Mission: STS-122
Vehicle: Discovery

Processing of Discovery, which returned from the STS-116 mission on Dec. 22, continues in Orbiter Processing Facility bay 3. The right-hand orbital maneuvering system pod was removed this week. Technicians are busy working on Discovery's electrical system, preparing for the installation of the new station-to-shuttle power transfer system (SSPTS) modification. This system will allow the orbiter and International Space Station to share power, which will enable the orbiter to remain docked for longer periods of time. Work is also under way to change out Discovery's cockpit windows, with the removal and replacement of window No. 8 completed this week.