| Acronym | Meaning |
| SDTA | Structural Dynamic Test Article |
| OST | Orbiter SuPport Trolley |
| COMP | Compass |
| HFT | Horizontal Flight Test |
| SPS | Statement Of Prior Submission |
| GFAE | Government Furnished Aircraft Equipment |
| CBRF3 | Bromotrifluoromethane (Fire-Extinguishing Material) |
| HFX | High Frequency Transceiver |
| SFT | Static Firing Test |
| PL | Prelaunch |