| Acronym | Meaning |
| RIS | Reporting Identification Symbols |
| VY | Velocity Along The Y-Axis |
| DOP | Diver Operated Plug |
| SR | Standard Repair |
| GCTS | Gas Component Test Stand |
| FCOS | Flight Control Operational Software |
| SDRL | Supplier Data Requirements List |
| HYPACE | Hybrid Programmable Attitude Control Electronics |
| RMA | Renote Manipulator Arm |
| HMC | Hypergolic Maintenance And Checkout |