| Acronym | Meaning |
| TRS | Tug Rotational System |
| I | D&CA Inverter Distribution And Control Assembly |
| DI | Display Interface Processor (Software Functional Element) |
| RFEI | Request For Engineering Information |
| MEM | Module Exchange Mechanism |
| MPSR | Multipurpose Support Room |
| FRSI | Flexible Reusable Surface Insulation |
| IAS | Indicated Airspeed |
| STAT | Statistics |
| HT | Heat Transfer |