| Acronym | Meaning |
| CG | Center Of Gravity |
| FRSI | Felt Reusable Surface Insulation |
| LM | Interface Module |
| INNER | GlideInner Glideslope |
| EVT | Engineering Verification Test |
| EOT | End Of Tape |
| PTCS | Propellant Tanking Computer System |
| DIS | Documentation Index System |
| FDM | Frequency Division Multiplexing |
| TVP | Test Verification Program |