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Allard Beutel /Jessica Rye
Kennedy Space Center, Fla.
(Phone: 321/867-2468)

July 13, 2005
RELEASE : 05-183
NASA Reschedules Shuttle Return to Flight
NASA will attempt to launch the Space Shuttle Return to Flight mission (STS-114) no earlier than 2:40 p.m. EDT, Saturday, July 16. Discovery’s liftoff today from NASA’s Kennedy Space Center, Fla. was postponed at 1:30 p.m. EDT.

During countdown activities, a low-level fuel cut-off sensor inside the External Tank (ET) failed a routine pre-launch check. The sensor protects a Shuttle’s main engines by triggering their shut down if fuel runs unexpectedly low. The sensor is one of four inside the liquid hydrogen section of the ET.

The ET’s liquid oxygen and liquid hydrogen were drained this evening. While the tank was being emptied, engineers monitored and collected data on the failed liquid hydrogen sensor. They will continue to collect and analyze data overnight.

Space Shuttle Program managers plan a series of meetings tomorrow to discuss the problem and determine the steps necessary to get back into the launch countdown. The STS-114 crew will remain at Kennedy while engineers work on the problem.

During their 12-day Return to Flight mission to the International Space Station, Discovery’s seven crew members will test new techniques and equipment designed to make Space Shuttles safer. They’ll also deliver supplies and make repairs to the Space Station.

For the latest information about the STS-114 mission, visit:


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