| Acronym | Meaning |
| OAS | Orbiter Aeroflight Simulator |
| F&E | Facility And Envii-onment |
| CSD | LCharles Stark Draper Laboratory (MIT) |
| DRL | Document Requirements List |
| DAR | Digital Autopilot Requirements |
| RSS | Range Safety System |
| MTF | Mississippi Test Facility (now NSTL) |
| MTVC | Manual Thrust Vector Control |
| SLA | ERNO Spacelab Product Assurance Department |
| I@@PL | Implement |