| Acronym | Meaning |
| ROT | Remaining Operating Time |
| IDCA | Inverter Distribution And Control Assembly |
| COAS | Course Optical Alignment Sight |
| EFF | Efficiency |
| SSPP | SYstem Safety Program Plan |
| CEIT | Crew Equipment Interface Test |
| EDLN | Engineering DeveloPment Logic Network |
| HTLL | High Test Level Language |
| ICOS | Improved Crew Optical Sight |
| LM | Long Module |