"The launch of NASA's space shuttle Atlantis will take place no earlier than Saturday, Dec. 8, at 3:43 p.m. EST. Thursday's scheduled liftoff from NASA's Kennedy Space Center, Fla., was postponed because of a problem with a fuel cutoff sensor system inside the shuttle's external fuel tank." The shuttle is to install and activate the Columbus laboratory module on the International Space Station.
COMMENT: The four engine cutoff, or ECO, sensors, have been a sore spot for a long time. They are continually being refurbished and point up the difficulties of sustaining a launch system, however capable it may be, built with 1970s technology.