| Acronym | Meaning |
| GNCS | GuGNCSGuidance And Navi-oation Control System |
| HAL | High Order Assembly Language |
| OLIF | Orbiter Landing Instrumentation Facilities |
| HID | Hardware Interface Device |
| H/W | Hardware |
| FTS | Flight Test Station |
| RTOP | Research And Technology Objectives And Plans |
| EOD | Explosive Ordnance Disposal |
| SUPT | Support |
| CDS | Closeout DoorSystem |