(04/08/2001) --- STS-100 Pilot Jeffrey S. Ashby returns to KSC to complete Terminal Countdown Demonstration Test activities that were postponed earlier. The TCDT includes emergency escape training, payload bay walkdown, and a simulated launch countdown. The primary payload comprises the Canadian robotic arm, SSRMS, and Multi-Purpose Logistics Module, Raffaello. Launch of Space Shuttle Endeavour on mission STS-100 is targeted for April 19 at 2:41 p.m. EDT from Launch Pad 39A