| Acronym | Meaning |
| SIE | Shuttle Interface Equipment Services |
| SG | Gnal Generator |
| MIL | GSFC Spaceflight Tracking And Data Network Station |
| PDL | Procedure Distribution List |
| VCG | Vector Cardiogram |
| NRCC | National Research Council Of Canada |
| ELS | Elevon Load System |
| D&C | Displays And Controls |
| SSA | S-Band Single Access |
| I | NTC/0INTC/0Integrated Checkout |