| Acronym | Meaning |
| TEMS | Transport Environment Monitoring System |
| CRSVR | Crossover |
| UNBAL | Unbalance |
| POPA | PaYload Ordnance Processing Area |
| CSTS | Cryogenic Storage And Transfer System |
| LA | Low Attitude |
| PCP | Program Change Proposal |
| GACU | Ground Avionics Cooling Unit |
| RDY | Ready |
| TDM | Time-Division Multiplexing (Multiplexer) |