| Acronym | Meaning |
| HVAC | Heating, Ventilating, Air-conditioning |
| GN2 | Gaseous Nitrogen |
| DCS | Design Communication System |
| CCP | Configuration Change Point |
| SATO | Supply And Transportation Operations |
| OPPAR | Orbiter Project(s) Parts Authorization Request |
| LCU | Inertial Components Temperature Controller |
| H/S | Heat Shield |
| CASP | CDS APPlication SL'pport Programs |
| MCDU | Multifunction CRT Display Unit |