| Acronym | Meaning |
| VT | STS Processing (KSC VO Dir.) |
| VSD | Vertical Situation Display |
| SIP | SYstems Integration Office |
| MAC | Maximum Allowable Concentration |
| CSR | Certification Status Report |
| CPF | Cost Per Flight |
| TBC | Terminal Buffer Controller |
| TVC | Thermal Vacuum Chamber |
| SCDU | Signal Conditioning And Display Unit |
| OPT | Optics |