| Acronym | Meaning |
| PRACA | Problem Reporting And Corrective Action |
| FMX | FM Transmitter |
| PDU | Pressure Distribution Unit |
| SSPTF | Santa Susana Propulsion Test Facility (see SSFL) |
| SMCS | Separation Monitor And Control System |
| FP | Fuel Pressure |
| DISTR | Digital Interface Unit |
| ERSI | Elastomeric Reusable Surface Insulation |
| MICIS | Material Information Control And Information System |
| DDP | Digital Data Processing (Processor) |