| Acronym | Meaning |
 | IDRD | Information Definition Requirements Document |
| BAC | Buffer Access Card |
| SPE | Static Phase Error |
| SS | Space Shuttle |
| R&DO | Research And Development Operations (MSFC) |
| MEC | Mission Events Controller |
| MMC | Martin Marietta Corporation |
| PPR | Payload Preparation Room |
| RTD | Resistance Temperature Device |
| OVLD | Overload |
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