| Acronym | Meaning |
| UST | Universal Servicing Tool |
| SEI | SYstem Engineering Groundrule |
| ISTA | Intertank Structural Test Assembly |
| PICS | Predefined Input Control Sequence |
| RLF | Relief |
| GPME | General Purpose Mission Equipment |
| ELV | Expendable Launch Vehicle |
| SPOC | Shuttle Payload Operations Contractor |
| SOM | Ship Operations Manager (NASA) |
| DME | Distance Measur Ng EquiPment |