| Acronym | Meaning |
| DRI | Data Rate Indicator |
| EPDS | Electrical Power Distribution Subsystem |
| LES | Launch Equipment Shop |
| MCOP | Mission Control Operations Panel |
| EDC | Engineering Design Change |
| CNSL | Console |
| HS-C | Hamilton Standard CO Absorbent Material |
| PM | Pulse Modulation |
| PH | Phase |
| FCEI | Facility Contractor End Item |