| Acronym | Meaning |
| HIP | Hardware Interface Program |
| EIVT | Electrical And Instrumentation Verification Test |
| EPL | Electronic |
| DCO | Detailed Checkout |
| PMPL | Preferred Mechanical Parts List |
| TIM | Time Interval Monitor |
| MTC | Mission And Traffic Control |
| RRT | Rendezvous Radar Transponder |
| BT | Burn Time (Engine) |
| CS | Core Segment |