| Acronym | Meaning |
| SPS | Secondary Propulsion System |
| LK | Leak |
| MS | Military Standard (Parts Designation) |
| PTIS | Program Test Input System |
| NOT | ProvideNot Provided |
| LS | Life Science |
| LHE | Liquid Helium |
| PR | PressureRegulator |
| DEDA | Data Entry And Display Assembly |
| TASPR | TATTechnical Acceptance Team |