| Acronym | Meaning |
| RUT | Resource Utilization Time |
| FO | Objective |
| HPFT | High-pressure Fuel Turbopump |
| MO | Middeck Overhead |
| SRCBD | Software Requirements Control Board Directive |
| CRYO | Cryogenic |
| EED | Electro (Electrical) Explosive Device |
| FI | Formal Inspection |
| SPG | Signal Point Ground |
| HSI | Horizontal Situation Indicator |