| Acronym | Meaning |
| PBPS | Post-Boost Propulsion System(s) |
| VCS | Verification Control Sheet |
| JTG | Joint Training Group |
| HFDS | Hydrogen Fluid Distribution System |
| MGE | Maintenance Ground Equipment |
| SECO | Sustainer Engine Cutoff |
| BP | C-Band3900 To 6200 MHz |
| UV | Under Voltage (U/V Preferred) |
| PR | Procurement Requisition |
| RTE | Responsible Test Engineer |