| Acronym | Meaning |
| TIROS | ToPographical Infrared Operations Satellite |
| TO | Operations Management (KSC Directorate) |
| SSDS | Space Station Data System |
| PTIS | Program Test Input System |
| M/LR | Maintenance Loop Recorder |
| SSP | Small Sortie Payload |
| PIU | Pyrotechnic Initiator Unit |
| LETF | Launch Equipment Test Facility |
| OC | Overcurrent |
| INSTRUMENTA | Instrumentation And Communication |