| Acronym | Meaning |
| S/0 | Switchover |
| FSLT | First Sea Level Test |
| SSSS | Space Shuttle System Specification |
| OLDB | On-Line Data Bank |
| LA | Lightning Arrester |
| ICMO | Integrated Configuration Ianagement Office |
| PIA | Preinstallation Acceptance |
| SCF | Sequenced Compatibility Firing |
| STF | Spin Test Facility (see DSTF) |
| LIM | Limit |