| Acronym | Meaning |
| PEP | Power Extension Package |
| PCM | Pulse Code Modulation |
| Q | Beta Yaw Dynamic Pressure |
| DFRN | PRESSDifferential Pressure |
| ITAP | Integrated Technical Assessment Panel |
| SEA | Silicon Elastimeter Ablator |
| PN | Pseudo Noise |
| IPS | IRME Initiator Resistance Measuring Equipment |
| ECL | Entry Closed Loop |
| MCS | Maintenance And Checkout Station |