| Acronym | Meaning |
| IFTM | In-Flight Test Maintenance |
| SSC | L Shuttle System Commonality List |
| EPS | Electrical Power System (Subsystem) |
| RTS | Remote Tracking Station |
| K | One Thousand |
| MSFN | Manned Space Flight Network |
| EWE | Emergency Window Escape |
| USBS | Unified S-Band System (Subsystem) |
| VHF/AM | Very High Frequency Amplitude Modulator |
| PIE | P/L Integration Equipment |