| Acronym | Meaning |
 | SAWD | Solid Amine Water Desorbed |
 | SPA | Signal Processor Assembly |
 | RFD | Requirements Formulation Document |
 | EC | Events Controller |
 | SP-OPI | OPerations Planning And Integration Office (KSC |
 | SSPDS | Space Shuttle Payload Data Study |
 | SMD | Spacelab Mission DeveloPment |
 | GPBIM | General Purpose Buffer Interface Module |
 | OCF | Orbiter Computational Facilities |
 | NSR | National Slow Rate |