| Acronym | Meaning |
| RTC | Real-Time Computer |
| OML | Outer Mold Line |
| IT | Identification Transponder |
| FACO | Factory Assembly And Checkout |
| MO | Manual Orientation |
| SOCA | R Shuttle Operational Capability Assessment Report |
| EOP | Experiments Of Opportunity |
| DBIA | Data Bus Isolation Amplifier |
| BC | Battery Charger |
| OSDH | Orbiter System Definition Handbook |