| Acronym | Meaning |
| RR | Range Rate |
| SPAF | Simulation Processor And Formatter |
| SFP | Single Failure Point |
| VL | Expendable Vehicles (KSC VO Dir.) |
| HSK | Horizontal Sling Kit |
| SW | Switcher (Switch) |
| CIN | Change Identification Number |
| RHS | Rocketdyne Hybrid Simulator |
| IPS | Interface Problem Sheets |
| IPS | IRD Information Requirements Document |