| Acronym | Meaning |
| PPS | Pneumatic Power Subsystem |
| RCHCS | Regenerable CO And Humidity Contro SYstem |
| PR | Pressure |
| BP | Coeff Icient |
| SOCC | Satellite Operations Control Center |
| TVCD | Thrust Vector Control Driver |
| REV | Reverse |
| SPIAP | Shuttle/Payload Integration Activities Plan |
| LS | Launch Sequence |
| H | EPAHigh Efficiency Particle Accumulator |