| Acronym | Meaning |
 | FPBOV | Fuel Preburner And Oxidizer Valve |
| N&G | Navigation And Guidance (G&N Preferred) |
| SR | Status Review |
| TPS | Thermal Protection System (SR[3 |
| DACBU | Data Acquisition And Control Buffer Unit |
| FPE | Functional Program Element |
| IFRU | In-Flight Replacement Unit |
| VHF/AM | Very High Frequency Amplitude Modulator |
| HAC | Heading Alignment Circle |
| SSC | Solid-Solution Cermet |
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