| Acronym | Meaning |
| EO | Earth Orbit |
| MIP | Modification Instruction Package |
| CCR | Control Center Rack |
| RS | Redundancy Status |
| P&M | Phase Modulation (Modulated) |
| MECR | Maintenance Engineering Change Request |
| BYP | Bypass |
| VCD | Verification Control Document |
| EGSE | Electrical Ground Support Equipment |
| CCVA | Chamber Coolant Valve Actuator |