| Acronym | Meaning |
 | PRCBD | ProgramReview Control Board Directive |
| OSDH | Orbiter System Definition Handbook |
| ICDU | Inertial CouPling Data Unit |
| HA | Hazard Analysis |
| S/C | Stabilization And Control |
| ELS | Earth Landing System (Subsystem) |
| R | Yaw Rankine Rate |
| O/R | Oxygen Relief |
| SSHB | Station Set Handbook |
| BP | C/LChecklist |
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