| Acronym | Meaning |
 | R | LEO Request Liaison Engineering Order |
| DFRN | PRESSDifferential Pressure |
| MAA | Mathematical Association Of America |
| SSE | SubsYstem Support Equipment |
| FDAI | Flight Director Attitude Indicator |
| PI | Preliminary Investigation |
| ETA | Estimated Time To Acquisition |
| MU | Mockup |
| JP | Jet Propulsion |
| PTD | Provisioning Technical Documentation |
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