| Acronym | Meaning |
 | OFM | Original Equipment Manufacturer |
| PETA | Performance Evaluation And Trend Analysis |
| PAX | Passengers |
| IMU | Inertial Measurement Unit |
| PCM | E Pulse-Code Modulation Event |
| SRC | Sample Return Container |
| O&C | Operation(s) And Checkout (Building-was MSOB) |
| RADAR | Radio Detecting And Ranging |
| CEA | Control Electronics Assembly (for MMU) |
| EPDU | Electrical Power Distribution Unit |
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