| Acronym | Meaning |
| LRV | Long Range Video |
| FDL | Flight Director Loop |
| IDO | InterdivisionalOperations |
| UPS | Uninterruptible Power Supply |
| SMSI | Standard Manned Space Flight Initiator |
| GO2 | Gaseous Oxygen |
| OSDH | Orbiter System Definition Handbook |
| SPD | Standard Practice Directive |
| FOSDIC | Film Optical Sensing Device For Input To Computers |
| D&P | Drain And Purge |