spaceflightnow.com
2050 GMT (4:50 p.m. EDT)
Engine cutoff - ECO - sensor No. 3, the one that "failed wet" earlier today and derailed an attempt to launch the shuttle Atlantis, continued indicating it was immersed in liquid hydrogen after the ship's external tank was drained this afternoon, officials said. The other three ECO sensors in the hydrogen tank correctly indicated they were dry as one would expect.
0521 GMT (1:21 a.m. EDT)
Shuttle Atlantis is being fueled up again for launch to the International Space Station. Loading of the external tank with 528,000 gallons of liquid oxygen and liquid hydrogen began around 1:15 a.m. for this second countdown attempt. Controllers will be carefully monitoring the engine cutoff sensors in the tank as fueling proceeds. As long as the three hydrogen sensors that worked normally yesterday remain good today, NASA will meet its rules governing the hardware and expect to press forward with 3-of-4 sensors for liftoff at 11:15 a.m.
The weather outlook remains favorable with an 80 percent chance of acceptable conditions. There are no other technical issues being worked by the team.