| Acronym | Meaning |
| DFI | Development Flight Instrumentation |
| UMBC | Umbilical Cord Cable |
| P/L | Purchased Labor |
| ESDU | Event Storage And Distribution Unit |
| NBT | Neutral Buoyancy Trainer |
| SCO | Start Checkout |
| PAM-A | PAM |
| SMG | Superconduction Magnetic Energy Storage |
| SGOS | Shuttle Ground Operations Simulation (Simulator) |
| HCSI | Hughes Communications Services |