| Acronym | Meaning |
 | SAAS | Shuttle Aerosurface Actuator Simulation |
| PP | Push-Pull |
| OPPAR | Orbiter Project(s) Parts Authorization Request |
| HSG | High Sustained Gs Acceleration |
| GLS | Ground Launch Sequence (Sequencer) |
| POPA | PaYload Ordnance Processing Area |
| RTC | Real-time Command |
| RCVY | Recovery |
| SPS | Shuttle Procedures Simulator |
| SVO | Space Vehicle Operations (KSC Dir.) |
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