| Acronym | Meaning |
 | SCR | Schedule Change Request |
| OR | Operations Requirement |
| ECAS | Experiment Computer Application Software |
| SPICE | Europe |
| GCOS | General Computer Operational System |
| DCC | Digital Communications And Control Unit |
| EOM | Engineering Operations Manual |
| EPCDC | Electrical Power Conditioning |
| SIS | Systems Integration Schedule |
| PFC | Performance Flight Certification |
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