| Acronym | Meaning |
| PCA | Pneumatic Control Assembly |
| MDF | Mild Detonating Fuse |
| RRT | Rendezvous Radar Transponder |
| VR | Voltage Relay |
| SSM | EC Space Shuttle Main Engine Controller |
| CRT | Cathode-Ray Tube |
| FAO | Flight Activities Officer |
| FL | Fail |
| SOATS | SLPport Operation Automated Training System |
| GPCB | GOAL Program Control Block |