| Acronym | Meaning |
| PRS | Payload Retention Subsystem |
| OSF | Ordnance Storage Facility |
| GRTLS | Glide Return To Launch Site |
| ISI | Instrumentation Support Instruction |
| INTLK | Interlock |
| MTC | Master Thrust Control |
| SO | FT Square Feet |
| MOPI | Max Rate Output Initiator |
| BCWS | Budget Costs For Work Scheduled |
| MSVP | Master Shuttle Verification Plan |