| Acronym | Meaning |
 | GSEL | Ground Support Equipment List |
| T/C | Telecommunications |
| S/A | Scheduled/Actual |
| KMS | K-Words X Millions Of Seconds |
| SIM | Scientific Instrumentation Module |
| OCR | Optical Character Recognition |
| LWD | Left Wing Down |
| EUVE | Extreme Ultraviolet Explorer |
| PFC | Preliminary Flight Certification |
| PDI | Payload Data Interleaver |
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