| Acronym | Meaning |
| MPTA | Main Propulsion Test Article |
| LC | Intercom (Orbiter To Ground Via Hardline) |
| CPC | Characteristics Properties Code |
| IVA | Intravehicular Activity |
| GETIL | Ground Elapsed Time Of Landing (for TIG Of |
| LLCF | Launch And Landing Computational Facilities |
| EOP | Earth And Ocean Physics |
| QUIC | Quality Data Information And Control |
| SCA | Sequence Control Assembly |
| SIR | System Interface Requirements |