GUCP Leak Check Complete, APU Connect on Tap for Endeavour

Status Report From: NASA HQ
Posted: Thursday, March 17, 2011

image Leak checks have been completed on space shuttle Endeavour's external fuel tank's ground umbilical carrier, or GUCP, plate at Launch Pad 39A.

Today technicians will focus on connecting the auxiliary power unit (APU) quick disconnects. The APU is a hydrazine-fueled, turbine-driven power unit that generates mechanical shaft power to drive a hydraulic pump that produces pressure for the orbiter's hydraulic system.

Meanwhile, the STS-134 astronauts continue training at their home base at NASA's Johnson Space Center in Houston in preparation for Endeavour's launch on the next mission to the International Space Station, which is targeted for April 19.

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