| Acronym | Meaning |
| CCF | Converter Compressor Facility |
| PSOP | Payload Systems Operating Procedures |
| COM-M | Common Mode |
| IPS | IRV Isotope Reentry Vehicle |
| PB | Pushbutton |
| GNC | GuGNCGuidance And Navigation COmPuter |
| S/P | Signal Processor |
| GPSS | General Purpose System Simulator |
| TFR | Trouble And Failure Report |
| COE | Corps Of Engineer |