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Next on the NASA Space Shuttle Status Report: NASA announces a new launch planning window for Discovery. The NASA Space Shuttle Status Report starts right now. I'm Mark Ross, NASA test director, and this is the NASA Space Shuttle Status Report. Space Shuttle Program management announced a new launch planning window beginning July 1 and extending to July 19 for Discovery's launch to the International Space Station. This window provides the agency time to do additional engineering analysis to ensure a safe flight for Discovery and its crew. Following a two-day engineering discussion to determine if the external tank's engine cut-off -- or ECO sensors needed to be changed out, program management decided to remove and replace all four liquid hydrogen sensors in the external tank. These sensors indicate whether the tank still has fuel during liftoff. During testing, one of the four ECO sensors had a slightly different reading than expected. Technicians from Louisiana�s Michoud Assembly Facility, where the tanks are manufactured, will travel to the space center to perform the work. The removal and replacement of the sensors takes approximately 22 days to complete. Change-out work will