| Acronym | Meaning |
| MS | Master Switch |
| IPS | IRU Inertial Reference Unit |
| VC | Vector Character |
| HSD | HoriZontal Situation Display |
| TGOWG | Teleoperator Ground Operations Working Group |
| SPC | Shuttle Processing Contractor |
| CAS | Command Augmentation System |
| USB | Unified S-Band |
| ICT | Influence Coefficient Tests |
| OSTA | Office Of Space And Terrestrial Application(s) |