| Acronym | Meaning |
| DN | Down |
| OMRP | Operations And Maintenance Requirements Plan |
| BOS | Backup Operating System |
| CP-SPO | Spacelab Projects Office (KSC) |
| STA | Station |
| HAL | Houston Aerospace Language |
| LTG | Linear Tangent Guidance |
| ECL | Entry Closed Loop |
| OPS | Orbiter Project Schedules |
| GOES | GeGOESGeostationary Operational Environment Satellite |