| Acronym | Meaning |
| SSEOS | Space Shuttle Engineering And Operations Support |
| KCAS | Knots Calibrated Airspeed |
| SP-ILS | Integrated Logistics Support Office (KSC Shuttle) |
| DCS | Data Control System |
| ISTB | Integrated Subsystem Test Bed |
| OSHA | Occupational Safety And Health Act (Activity) |
| O&M | Operation And Maintenance |
| GPL | General Purpose Laboratory |
| NOT | SwitchaNot Switchable |
| PT | Point |