| Acronym | Meaning |
 | HPOP | High Pressure Oxidizer Pump |
| HR | Hour |
| LR/LD | Line Receiver/Line Driver |
| ODC | Other Direct Costs |
| PEIR | Project Equipment Inspection Record |
| OIC | Orbiter (Orbital) Integrated Checkout |
| TAO | Trans-Atlantic Abort |
| LS | Left Side |
| RAM | Responsibility Assignment Matrix |
| KCAS | Knots Calibrated Airspeed |
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