| Acronym | Meaning |
 | SC | Signal Conditioner (S/C Preferred) |
| MOC | Marine Operation Center |
| CB | Constant Bandwidth |
| NSTL | National Space Technology Laboratory (was MTF) |
| GCN | Ground Communications Network (A/G Worldwide Net) |
| IMU | Internal Measurement Unit |
| HMV | Hydrogen Manual Valve |
| HFTS | Horizontal Flight Test Simulator |
| PAS | Primary Ascent System |
| REJ | Reject |
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