| Acronym | Meaning |
| EOS | Emergency Oxygen System |
| GSA | General Services Administration |
| K-SPN | KSC Shuttle Project Notice |
| M | Mandatory |
| M-M-L-S | Model-Modes-Loads-Stresses |
| GESYOT | GCOS Program Element Name |
| SSFS | Space Shuttle Functional Simulator |
| SPACE | Spacecraft Prelaunch Automatic Checkout Equipment |
| COMAS | Combined Orbital Maneuvering And Abort System |
| I | NTC/0INTC/0Integrated Checkout |