Five astronauts launched aboard the Space Shuttle Discovery on March 13, 1989 at 9:57 am (EST) for the STS-29 mission. Included were James P. Bagian, mission specialist 1; Robert C. Springer, mission specialist 3; James F. (Jim) Buchli, mission specialist 2; John E. Blaha, pilot; and Michael L. Coats, commander. The mission?s primary payload was the Tracking and Data Relay Satellite-4 (TDRS-4).