| Acronym | Meaning |
| MMH | Monomethylhydrazine |
| PSL | Pressure Seal |
| ISL/LAR | Review |
| FOD | Flight Operations Directorate (JSC) |
| CASO | Cancellation Addendum Sales Order |
| BRG | Bearing |
| DWV | Dielectric Withstanding Voltage |
| VT | STS Processing (KSC VO Dir.) |
| MTOGW | Maximum Takeoff Gross Weight |
| SEC | Second |