Payload Specialist - Alternate and Back-up (not Flown) Payload Specialists

Alternate and Back-up (not Flown) Payload Specialists

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  • STS-9

Wubbo Ockels, Michael Lampton

  • STS-40

Robert W. Phillips

  • STS-41-G

Robert Thirsk

  • STS-51-F

George W. Simon, Diane K. Prinz

  • STS-61-A

Ulf Merbold

  • STS-50

Joseph M. Prahl, Albert Sacco

  • STS-65

Jean-Jacques Favier

  • STS-73

David H. Matthiesen, R. Glynn Holt

  • STS-78

Pedro Duque, Luca Urbani

  • STS-83

Paul Ronney

  • STS-94

Paul Ronney

  • STS-90

Alexander W. Dunlap, Chiaki Mukai

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