08.24.06

Tracy Young
Kennedy Space Center, Fla.
321-867-2468

STATUS REPORT: S-082406

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. This report does not necessarily reflect the chronological
order of future space shuttle missions. If you are a member of the
media and would like further information, visit:
http://www.nasa.gov/centers/kennedy/news/index.html

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. 27, 2006, 4:30 p.m. EDT
Crew: Jett, Ferguson, Tanner, Burbank, MacLean and Stefanyshyn-Piper
Inclination/Orbit Altitude: 51.6 degrees/122 nautical miles

At Launch Pad 39B, closeout of the orbiter's aft compartments is
complete and the aft doors have been installed. Technicians have
finished performing the aft confidence test, which involves powering
up and testing all of the aft systems, such as the main propulsion
system circuits. The payload bay doors will be closed today for
flight.

The start of the launch countdown was moved from 6 p.m. to noon
Eastern time today to allow for earlier loading of fuel for the power
reactant storage and distribution system. The goal is to finish the
system loads before the predicted afternoon thunderstorms on Friday.
Additional hold time will be added at the T-19 hour mark, extending
the hold from four hours to 10 hours. After T-19, the schedule will
proceed as normal, culminating in a launch on Sunday at 4:30 p.m.
Eastern time.

The STS-115 crew arrived at 11:30 a.m. today at the Shuttle Landing
Facility from Johnson Space Center in Houston. They will spend the
next days prior to launch going over their flight plans.

U.S. Air Force weather officers are forecasting a 30-percent chance of
weather prohibiting a launch attempt on Sunday. The primary weather
concerns are anvil clouds, showers and thunderstorms within 20
nautical miles of the Shuttle Landing Facility.