| Acronym | Meaning |
| R/T | Real Time |
| PCG | Phonocardiogram |
| TFU | Test Facility Utilization |
| SOTS | Suborbital Tank Separation |
| CR | Configuration Review |
| IOB | InPut/Output Buffer (if Bus |
| VASI | Visual Approach Slope Indicator |
| CTR | Contract Technical Representative |
| SI | International System Of Units (ISU Preferred) |
| MDC | Mission Duty Cycle |