| Acronym | Meaning |
 | TIP | TIROS Information Processor |
| SPAN | Space Physics Analysis Network |
| PFU | Proto Flight Unit |
| PEM | Particle Environment Monitor |
| EAD | Energy And Air Division (EPA |
| GEOSAT | Geodesy Satellite |
| TCAS-II | Traffic Alert And Collision Avoidance System |
| AEE | Alliance For Environmental Education |
| DIFAX | Digital Facsimile Map |
| BLSG | Boundary Layer Sensing Group |
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