STS-75
STS-75: Reflight of U.S./Italian Tethered Satellite System (TSS-1R) marred by loss of satellite on flight day three, although valuable scientific data was still gathered. Other primary payload, U.S. Microgravity Payload-3 (USMP-3), performed nominally. TSS considered primary payload at beginning of mission and USMP-3 primary following TSS operations.