Mark Hess
 Headquarters, Washington, D.C.                   January 25, 1990
 (Phone:  202/453-4164)
 
 Jeffrey Carr
 Johnson Space Center, Houston
 (Phone:  713/483-5111)
 
 
 RELEASE:  90-13
 
 SCIENCE PAYLOAD COMMANDERS NAMED; CARTER REPLACES CLEAVE ON IML-1
 
 
 
    In a move to provide long range leadership in the development 
 and planning of payload crew science activities, four Space 
 Shuttle mission specialists currently assigned to STS missions 
 have been designated as payload commanders.
 
 
    The payload commanders will have overall crew responsibility 
 for the planning, integration and on-orbit coordination 
 ofpayload/Space Shuttle activities on their mission.  The crew 
 commander will retain overall responsibility for mission success 
 and safety of flight.
 
 
    Named as payload commander for STS-42, the first flight of the 
 International Microgravity Laboratory (IML-01) set for late 1990, 
 is mission specialist Norman E. Thagard, M.D.  In addition, Navy 
 Capt. Manley L. "Sonny" Carter, M.D., has been named as a mission 
 specialist on the IML crew, replacing Mary L. Cleave, Ph.D., who 
 has resigned her flight assignment for personal reasons.
 
 
    Kathryn D. Sullivan, Ph.D., will serve as payload commander 
 for STS-45, the first flight of the Atmospheric Laboratory for 
 Applications and Science (ATLAS-01), slated for launch in 1991.
 
 
    Payload commander for STS-46 is Jeffrey A. Hoffman, Ph.D.  The 
 STS-46 mission, set for 1991, will feature the first flights of 
 the European Retrievable Carrier (EURECA), developed by the 
 European Space Agency, and the Tethered Satellite System, a joint 
 project between NASA and the Italian space agency, Agenzia 
 Spaziale Italiana.
 
                              -more-
 
 
 
                               -2-
 
 
    Air Force Lt. Col. Mark Lee will be the payload commander on 
 mission STS-47 for Spacelab-J, a joint science venture between 
 NASA and the Japanese National Space Development Agency, NASDA, 
 also in 1991.
 
 
    Future assignments of payload commanders normally will be made 
 in advance of the remainder of the flight crew in order to help 
 identify and resolve training issues and operational constraints 
 prior to crew training.
 
 
    The role of the payload commander also is expected to serve as 
 a foundation for the development of a space station mission 
 commander concept.
 
                              -end-
 
 
 
 TO:  MDS/PRA Group
      1615 L Street, N.W. - Suite 100
      Washington, D.C. 20036
 
 DATE & TIME:  JANUARY 26, 1990
 
 ORDERED BY:  Edward Campion
 NASA Headquarters/LMD
 400 Maryland Avenue, SW
 Washington, DC 20546             PHONE:  202/453-8400
 
 PROJECT TITLE:  Release No:  90-13
 
 PRINT ORDER:  2198
 
 PRINTING:  Camera Ready, lst pg on NASA logo, other pages plain
 
 ENCLOSE & MAIL:  Release of 2 pages
 
 MAIL DATE:  JANUARY 29, 1990
 
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