| Acronym | Meaning |
| SSPTF | Santa Susana Propulsion Test Facility (see SSFL) |
| NCR | Nonconformance/Failure Report |
| FCDB | Flight Control Data Bus |
| G&N | Guidance And Navigation |
| VTS | Vertical Test System |
| SSME | Space Shuttle Main Engine |
| ECP | Engineering Change Proposal |
| SFDS | System Functional Design Specification |
| PSID | Pounds Per Square Inch Differential |
| DES | Descend |