| Acronym | Meaning |
| BCR | Bar Chart Report |
| MTTFF | Mean Time To First Failure |
| PMI | Preventive Maintenance Instruction |
| CICU | Computer Interface Conditioning Unit |
| RJC | Reaction Jet Control |
| MCIU | Master Control And Interface Unit |
| DECL | Direct Energy Conversion Laboratory (JSC) |
| TBN | To Be Negotiated |
| SCCH | Standard Cubic Centimeters-per Hour |
| SWT | Sextant |