| Acronym | Meaning |
| BER | Bit Error Rate |
| CECP | Compatibility Engineering Change Proposal |
| OFI | Operational Flight Instrumentation |
| HAL | High Order Assembly Language |
| CADU | Control And Display Unit |
| SAA | Safety Assurance Analysis |
| ERS | Entry And Recovery Simulation |
| F/D | Fill/Drain |
| W/H | Watt-Hour |
| CCVA | Chamber Coolant Valve Actuator |