| Acronym | Meaning |
 | IPS | Infrared |
| DIS | Documentation Index System |
| PCA | Pneumatic Control Assembly |
| MO | Major Objective |
| SPPL | Spare Parts Provisioning List |
| ESVS | Escape System Ventilation System |
| ETI | Elapsed Time Indicator |
| FWD | Forward |
| SAMSOR | SAMSO Regulation (now SDR) |
| V&V | Validation And Verification |
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