| Acronym | Meaning |
| NTO | NitrogenTetroxide |
| GVA | GOX Vent Arm |
| MMC | Mission Management Center |
| RTAC | Research And Technology Advisory Committee |
| TFCS | Triplex Flight Control System (Subsystem) |
| DD/HH:MM:SS | Day/Hour:Minute:Second |
| ECR | Engineering Change Request |
| UB | Upper Brace |
| OA | Operational Instrumentation MDM-Aft |
| STC | Standard Test Configuration |