Sept 23, 2009

George H Diller Kennedy Space Center, Fla 321-867-2468 george h diller@nasa gov

MEDIA ADVISORY: 46-09

STSS DEMO LAUNCH POSTPOSNED UNTIL NO EARLIER THAN SEPT 25

CAPE CANAVERAL, Fla - The launch of the U S Missile Defense Agency’s Space Tracking and Surveillance System Demonstration mission, or STSS Demo, is postponed until no earlier than Friday, Sept 25 Teams are working to correct a technical issue with some ground equipment on the pad at Space Launch Complex 17-B at Cape Canaveral Air Force Station, Fla

A Friday liftoff of the Delta II rocket carrying the STSS Demo spacecraft would be at 8 a m EDT in a one hour launch window

Following Wednesday morning's weather launch scrub, teams detected a small leak in a flange in the fuel transfer system under the launch pad Both the Delta II and STSS spacecraft have no technical issues

Teams plan to assess the fuel leak and determine what steps to take to support the next launch attempt

NASA's Launch Services Program at the Kennedy Space Center, Fla , is responsible for the launch of STSS Demo United Launch Alliance is conducting the launch service for NASA For more information about NASA’s Launch Services Program visit:

http://www nasa gov/centers/kennedy/launchingrockets/index html

-end-

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