| Acronym | Meaning |
| GSA | General Services Administration |
| TP | Test Port |
| D | LSC Data Link Transmission Repeater |
| FTIS | Flight Test Instrumentation System |
| RNG | RT Range Rate |
| MAR | Maintenance And Refurbishment |
| RMRS | Repeatable Maintenance And Recall System |
| CFY | Company Fiscal Year |
| EC | Engine Cutoff |
| FNT | Failure Notification Telex |