May 16, 2011
center in the event of engine failure but all three are in good shape, as are all systems aboard the orbiter, quiet as a team of controllers watches over all of the systems, four minutes, 20 seconds into the flight, endeavor is traveling 5500 miles per hour, altitude now 63 miles traveling downrange, 186 miles, or about 335,000 feet in altitude. environmental and control systems officer here reporting a good flash evapator -- evaporator system, providing cooling to all the avionics abo...