NASA is trying to launch Space Shuttle Endeavour on another construction mission to the International Space Station, but before that can happen engineers need to track down a leak in the living area of the shuttle. Atmosphere is escaping from the shuttle cabin, or from the tube connecting the cabin to a SPACEHAB module to be carried in the payload bay. Engineers have not yet pinpointed the location of the leak, but they seem to be concentrating on the shuttle itself, not the SPACEHAB module. SPACEHAB is a private contractor based in Seattle that builds modules that supports scientific and commercially-oriented experiments.
This will be Endeavour's first flight since 2002. For those five years, it has been receiving upgrades to various systems. Endeavour, on paper, will be the fittest, most capable shuttle ever to fly-- just as soon as NASA can find and plug that leak.
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