| Acronym | Meaning |
| FRCS | Forward Reaction Control System |
| VO | Voice |
| MT | Master Timer |
| MPS | Main Propulsion System |
| BOPACE | Boeing Plastic Analysis Capability For Engines |
| SEI | SYstem Engineering Groundrule |
| VPHD | Vertical Payload Handling Device |
| W | Wide |
| MO | Mission Operations |
| PDU | Pressure Distribution Unit |