| Acronym | Meaning |
 | NAVDAD | Navigationally Derived Air Data |
| FDSC | Flight Dynamics Simulation Complex |
| PPB | Program Performance Baseline |
| CS | Control Segment |
| R | Roentgen |
| SPPL | Spare Parts Provisioning List |
| SEC | Source Evaluation Committee |
| MSFN | Manned Space Flight Network |
| TK | Tank |
| PFP | Prograin Financial Plan |
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