| Acronym | Meaning |
| NSS | Nitrogen Supply Subsystem |
| COB | Communications Office Building |
| EM | Exception Monitor |
| TAEM | Terminal Area Energy Management |
| UA | Microampere |
| OT | Operational Instrumentation MDM-Tank |
| PT | Point |
| G | LOW Ground Lift-Off Weight |
| PAM | Pulse Amplifier Modulation |
| LOS | Loss Of Signal |