| Acronym | Meaning |
| KCS | Keyboard Configuration Studies |
| GSIU | Ground Standard Interface Unit |
| MDCS | Malfunction Display And Control System |
| LTG | Linear Tangent Guidance |
| HGVT | Horizontal Ground Vibration Test |
| GPS | Ground Power Supply |
| CPDS | Computer Program Design (or Development) Specificat |
| EXP | Exposure |
| IML | Inside Mold Line |
| MS | Mass Spectrometer |