| Acronym | Meaning |
| TRAJ | Trajectory |
| FCAP | Flight Control Applications Program |
| FCIM | Flight Control Interface Module |
| SSRR | Station Set Requirements Review |
| NRM | Nonrecurring Maintenance |
| DFS | Directional Finding System |
| EXO | Experiment Operator (in Spacelab) |
| TF | Test Fixture |
| TT&C | Tracking Telemetry And Control |
| MCA | Master ControlAssembly |