| Acronym | Meaning |
| BTR | Burn Time Remaining |
| SCL | Secondary Coolant Loop |
| FMOFPL | First Manned Orbital Flight With Payload |
| COM | Computer Output Microfiche |
| ITC | Igloo Thermal Control |
| SS | Space Station |
| SM | ESShuttle Mission Evaluation Simulation (Simulator) |
| MRR | Mission Reconfiguration Request |
| DOC | Document |
| LAIU | Launch Abort Interface Unit |