| Acronym | Meaning |
| FSS | Flight Support Station (for MMU) |
| OA | Operational Aft (DSC Or MOM) |
| IAS | Indicated Airspeed |
| MSF | Manned Space Flight |
| NLA | NNLA Npxt Lower Assembly |
| ML | Middeck Left |
| RANN | Research Applied To National Needs |
| ICD | Interface Control Document |
| PAD | Propellant Acquisition Device |
| BMS | Background Measurement Satellite |