| Acronym | Meaning |
| OMCF | Orbiter Maintenance And Checkout Facility |
| PSIA | Pound Per Square Inch Absolute |
| SPI | Surface Position Indicator |
| SDC | Software DeveloPment COmPuter |
| SD/YVV | SD/Launch Base Div['si'on |
| VCI | Velocity Change Indicator |
| TWD | Twisted Double Shielded |
| PER | Perigee |
| PCM | Pulse Code Modulation |
| PSOP | Payload Systems Operating Procedures |