| Acronym | Meaning |
| LES | Launch Equipment Shop |
| CHCS | Cabin Humidity Control Subsystem |
| SOM | Spares OPtimization Model |
| GM | Geometric Mean |
| LCA | Load Controller Assembly |
| AESE | Airborne Electrical Support Equipment |
| VP | Vacuum Pump |
| OFP | Operational Flight Program |
| MAN | Microwave Aerospace Navigation |
| TPR | Teleprinter |