| Acronym | Meaning |
 | ECP | Engineering Control Proposal |
| VPHD | Vertical Payload Handling Device |
| SIS | Shuttle Information System |
| PFC | Power Factor Corrector |
| CISS | Centaur Integrated Support Structure |
| LES | Launch Equipment Shop |
| DRC | Data Reduction Center |
| DACBU | Data Acquisition And Control Buffer Unit |
| MVA | Main Valve Actuator |
| NMI | Nautical Miles |
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