Wednesday, May 04, 2011

Faulty switch box replaced inside Endeavour

Kennedy Space Center teams this morning finished replacing an electronic switch box inside Endeavour believed responsible for last week's launch scrub.

The old box, called the Load Control Assembly-2, is undergoing tests in a malfunction lab to try to pinpoint the problem that prevented a set of fuel line heaters from turning on last Friday.

With the new box installed inside Endeavour's aft compartment, two days of tests commence to verify that all of the nine systems to which it routes power. 

Endeavour's final flight officially remains targeted for no earlier than Tuesday. A new launch date may not be set until Friday.

Here's an updated list of potential launch times next week:
-- Tuesday, May 10: 11:21 a.m.
-- Wednesday, May 11: 10:58 a.m.
-- Thursday, May 12: 10:32 a.m.
-- Friday, May 13: 10:10 a.m.
-- Saturday, May 14: 9:44 a.m.
-- Sunday, May 15: 9:22 a.m.

IMAGE: On Tuesday, the Load Control Assembly-2 (LCA-2) is outside at Kennedy Space Center's launch pad 39A after it was removed from inside space shuttle Endeavour's aft section. Located in the orbiter's aft avionics bay 5, the LCA-2 assembly, which feeds power to the fuel line heaters, is believed to have caused the heaters for Endeavour's auxiliary power unit-1 to fail April 29 during the first launch attempt for the STS-134 mission. Credit: NASA/Troy Cryder

1 comment:

Mark Lopa said...

I'm guessing that picture is in front of Endeavour's right wing?