| Acronym | Meaning |
| MOPS | Military Operations Phone System |
| HGR&SPTFAC | Hangar And Support Facility |
| OMEWG | Orbiter Maintenance Engineering Working Group |
| PAF | Payload Attach Fitting |
| PIAR | Project Impact Analysis Report |
| MTC | Mission And Traffic Control |
| FDIR | Fault Detection Identification/Isolation And |
| PBK | Payload Bay Kit |
| HF | Hydrogen Fill |
| DAP | Digital Autopilot |