| Acronym | Meaning |
| MEAR | Maintenance Engineering Analysis Request |
| MDT | Mean Down Time |
| OWDE | One-Way Doppler Extraction |
| RVN | Requirements Verification Network |
| OAS | Orbiter Atmospheric Simulator |
| ERPM | Engineering Requirements And Procedures Manual |
| OHF | Occupational Health Facility |
| PPS | Pneumatic Power Subsystem |
| PAC | Problem Action Center |
| LIN | Liquid Nitrogen |