This was the twelfth Endeavour flight and the eighth of nine planned missions to MIR and the fifth one involving an exchange of U.S. astronauts. Wolf was replaced by Thomas. During the mission more that 7,000 pounds of experiments, supplies and hardware were transferred between the two spacecraft. Landed at Kennedy Space Center, FL. January 31, 1998. Mission Duration: 8 days 19 hours 48 minutes 4 seconds. 

Launch Date: January 22, 1998 at 9:48 PM EST Launch Vehicle: Endeavour Crew: Commander: Terrence W. Wilcutt, Pilot: Joe F. Edwards, Jr., Payload Commander: Bonnie J. Dunbar, Mission Specialists: MIchael P. Anderson, James F. Reilly, II, Salizhan Shakirovich Sharipov, Andrew S. W. Thomas, Download: David A. Wolf