| Acronym | Meaning |
| DESIG | Designate |
| DOS | Disk Operating System |
| MI | Mechanical Joint |
| RAPS | Right AFT Propulsion System |
| MTBM | Mean Time Between Maintenance |
| LSP | Least Significant Portion |
| MM | Man-Month |
| I | DAS Integrated Data Acquisition System |
| SIS | Shuttle Information System |
| MOPR | Mission Operations Planning Room |