NASA Resets Shuttle Endeavour's Launch For No Earlier Than May 2

WASHINGTON -- NASA managers met Friday to discuss the status of space shuttle Endeavour's launch to the International Space Station. The launch was postponed because of a heater issue associated with the shuttle's hydraulic power system. The next launch attempt will be no earlier than May 2.

The shuttle has three Auxiliary Power Units (APUs) that provide hydraulic power to steer the vehicle during ascent and entry. NASA launch commit criteria and flight rules require all three APUs to be full [...]

Full story at http://spacefellowship.com/news/art25619/nasa-resets-shuttle-endeavour-s-launch-for-no-earlier-than-may-2.html