KSC-97EC-1587 - STS-87 Crew arrives at KSC for TCDT In preparation for Space Shuttle Mission STS-87, the crew arrives at the Kennedy Space Center Shuttle Landing Facility to participate in the Terminal Countdown Demonstration Test (TCDT) for their mission. The TCDT is a dress rehearsal for launch. STS-87 will be the fourth flight of the United States Microgravity Payload and the Spartan-201 deployable satellite. Launch is targeted for Nov. 19. 11/03/97