| Acronym | Meaning |
| UTC | Coordinated Universal Time |
| FDI | Fault Detection And Identification |
| VAA | Vehicle Assembly Area |
| TB | Terminal Board |
| MAINT | Maintenance |
| HDRM | High Data Rate Multiplexer |
| M | ITTSE Mobile Lgor Tracking Telescope System |
| W&C | Wire And Cable |
| COFI | Checkout And Fault Isolation (on Board) |
| OTB | Orbiting Tanker Base |