| Acronym | Meaning |
| GDP | Generalized Documentation Processor |
| MOR | Manufacturing Operation Record |
| IECS | Igloo Environment Control Subsystem |
| HCV | Hydrogen Check Valve |
| BDY | Body |
| SPRT | Sequential Probability Ratio Test |
| IOB | InPut/Output Box |
| FCH | L Flight Control Hydraulics Laboratory |
| REPRO | Reproduction |
| MORD | Mission Operations Requirements Document |