At Hangar AF, solid rocket booster disassembly activities are underway and the nozzles will be shipped to Utah on Friday. Atlantis' systems continue to operate very well on orbit with more than 80 percent of the Mir transfer activities complete. Heat shield installation is complete and aft compartment close-outs continue. Tests on the fuel cell monitoring system modifications continue in Columbia's midbody and fuel cell voltage tests are slated for early next week.
Preparations continue for the payload premate test.
With weight-saving modifications complete on Columbia's elevons, work continues on the flipper doors located above the elevon cove. The tunnel adapter's forward extension was installed yesterday and leak checks are in work. Leak and functional checks of the Shuttle's three auxiliary power units continue. Endeavour's body flap inspections continue. Discovery will move to high bay 2 in the VAB this afternoon, to make room in OPF bay 3 for Atlantis' return.