| Acronym | Meaning |
| FL | Fail |
| BR | Bit Rate |
| BCCT | Break Control Command Transducers |
| ECIO | Experiment Computer Input/Output |
| SMD | Spacelab Mission DeveloPment |
| PLL | Phase Locked Loop |
| DI | Display Interface |
| KEAS | Knots Equivalent Airspeed |
| SDS | Shuttle Dynamic Simulation (Simulator) |
| CONT | Contingency |