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Tracy Young
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-115 - 19th International Space Station Flight (12A) - P3/P4 Truss Segment and Solar Arrays
Vehicle: Atlantis (OV-104)
Location: Launch Pad 39B
Launch Date: Aug. 28, 2006, 4:04 p.m. EDT
Crew: Jett, Ferguson, Tanner, Burbank, MacLean and Stefanyshyn-Piper
Inclination/Orbit Altitude: 51.6 degrees/122 nautical miles

The Mission Management Team decided today to postpone the launch of Shuttle Atlantis on mission STS-115 for 24 hours. Launch is now scheduled for 4:04 p.m. Eastern time on Monday, Aug. 28. On Friday, at about 1:49 p.m., a lightning strike occurred on the pad's lightning protection system. Managers determined additional time was required to be assured all systems on the shuttle and the pad were not affected.

Mission managers will meet again Sunday morning to further assess launch readiness. The countdown clock is currently in an extended hold at T-11 hours.

At Launch Pad 39B, launch preparations continue. Loading of the fuel for the power reactant storage and distribution system was completed Friday night, following a six-hour weather delay. Closeouts of the pad systems and final stowage of flight crew items is under way.

U.S. Air Force weather officers are forecasting a 20-percent chance of weather prohibiting a launch attempt on Monday. The primary weather concern is for the probability of showers within 20 nautical miles of the Shuttle Landing Facility.