| Acronym | Meaning |
| EIU | Engine Interface Unit |
| W/T | Wind Tunnel |
| OSLM | Operations ShOP/Lab Manager |
| MMES | MSFC Mated Element Systems |
| PASS | Primary Avionics Software System |
| MOC | Mission Operations Computer |
| FCH | L Flight Control Hydraulics Laboratory |
| CP-DPO | Deployable Payloads Projects Office (KSC) |
| REM | Release-Engage Mechanism |
| PD | Pitch Down |