| Acronym | Meaning |
| AES | Atmospheric Exchange System |
| STBY | Standby |
| SRCH | Search |
| FMS | Food Management System (Subsystem) |
| HMA | Hypergot Maintenance Area |
| DML | Developmental Instrumentation MDM-Left |
| OS | Orbiter CEI Specification |
| TMG | Thermal Meteoroid Garment |
| H | AlH AlHot |
| PCR | Payload Changeout Room |