| Acronym | Meaning |
| OTD | Orbiter Test Director |
| VM | Voltmeter |
| PVWA | Planned Value Of Work Accomplished |
| CCM | Controlled Carrier Modulation |
| MA | Maintenance (STS) |
| EPT | Emergency Procedure Trainer |
| TP | Test Point |
| CLT | Closed Loop Test |
| TVN | Test Verification Network |
| MDAS | Mission Data Acquisition System |