spacetoday.net: Endeavour launch further delayed

Updated: Sun, May 1, 2011, 4:44 PM ET (2044 GMT)
Originally Posted: Sun, May 1, 2011, 12:20 PM ET (1620 GMT)
STS-134: shuttle on pad at night (NASA/KSC)

The space shuttle Endeavour will launch no earlier than May 8 as engineers continue to troubleshoot a problem with heaters in one of the orbiter's auxiliary power units (APUs), NASA announced Sunday morning. NASA had hoped to launch Endeavour on mission STS-134 on Monday afternoon, after the APU heater problem scrubbed Friday's launch attempt. However, initial efforts to identify and solve the problem Saturday failed. Engineers now believe the problem is with a power control box on the shuttle's aft compartment that will be replaced, work that pushes back the launch to at least May 8 and possibly later. NASA plans to announce an official launch date on Monday or Tuesday.