| Acronym | Meaning |
| CSIU | Core Segment Interface Unit |
| MOCS | Multichannel Ocean Color Sensor |
| LPOP | Low Pressure Oxidizer Turbopump |
| GACU | Ground Air Conditioning Unit |
| LA | Launch Abort |
| DDT&E | Design |
| HW | Hotwire |
| ESTA | Escape System Test Article |
| MS | Margin Of Safety |
| TI | Information Systems (KSC Directorate) |