| Acronym | Meaning |
| NF | NNF Natural Flood |
| H | AlH AlHead |
| IMCP | Integrated Monitor And Control Panel |
| OAFTO | Orbiter Atmospheric Flight Test Office |
| EQL | Equal |
| MF | Major Function |
| OALC | Ogden Air Logistics Center |
| SSRN | System Software Reference Number |
| PTR | Preliminary Test Report |
| DCC | Digital Communications And Control Unit |