| Acronym | Meaning |
 | PCCM | Program Change ControlManagement |
| ORIEN | Orientation |
| I | DAS Integrated Data Acquisition System |
| EVC | Extravehicular Communications |
| PPO2 | Oxygen Partial Pressure |
| PEIR | Project Equipment Inspection Record |
| LCC | Launch Control Center |
| TCR | Test Conductor |
| GECALL | GCOS Program Element Name |
| M | LcsManagement Information And Control System |
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