| Acronym | Meaning |
| IUS | Interim (inertial) Upper Stage |
| FPUM | Fuel Pressure Metering Unit |
| P3 | Compressor Discharge Total Pressure |
| PDA | Principal Development Activity |
| CNTR | Control |
| DFP | Display Function Processor |
| CORS | Navy Command And Control System Ashore Program |
| SE | System Engineering |
| NPR | Power Turbine Speed Right |
| VSC | Vast System Change (tdc 85) |