| Acronym | Meaning |
| BTC | Binary Time Code |
| PPB | Program Performance Baseline |
| SEAID | SuPport Equipment Abbreviated Items Description |
| ETA | Explosive Transfer Assembly |
| GO | GeGO General Order |
| PSF | Processing And Storage Facility (ET) |
| PD | Preliminary Design |
| SIA | Shuttle Induced Atmosphere |
| T/E | Transporter/Erector |
| SIS | Systems Integration Schedule |