The pad is open today following hypergolic reactant loading into the orbiter s reaction control system storage tanks.
Operations are now underway to complete the payload interface verification tests.
The tunnel adapter was installed yesterday and the payload interface verification test is complete and good. The external tank will be mated with the boosters later this week in the Vehicle Assembly Building. Testing of the orbiter s main propulsion system continues this week. A functional check of the orbital maneuvering system pods is scheduled for tomorrow. Checks of the Ku-band system are underway today.