| Acronym | Meaning |
| SSS | Stage Separation Subsystem |
| RAX | Remote Access Computing System |
| PMC | Postmanufacturing Checkout |
| TT | Thrust Termination |
| DVS | Digital Voice System |
| COFW | Certificate Of Flight Worthiness |
| DBGMP | Data Bus Isolation Amplifier |
| IGM | Interactive Guidance Mode |
| PLACE | Position Location Aircraft Communications |
| SC | Statement Of Capability |