| Acronym | Meaning |
| I | D&CA Inverter Distribution And Control Assembly |
| SHA | System Hazard Analysis |
| VTN | Verification TestNetwork |
| SIA | Solar Inertial Attitude |
| PPS | Pneumatic Power Subsystem |
| FP | Fine Pointing |
| FCIT | First Computer Interface Tester |
| PRO | Proceed |
| IDRD | Information Definition Requirements Document |
| GPS | Global Positioning System |