| Acronym | Meaning |
| MMU | Mass Memory Unit |
| RTV | Room-temperature Vulcanizing |
| G | LOW Ground Lift-Off Weight |
| M | Mega |
| TDRS | Telemetry Downlist Receiving Site |
| CDM | Communications/Data Manager |
| TRQ | Torque |
| VCU | Video Control Unit |
| RPC | Remote Power Controller |
| SMS | Shuttle Mission Simulator |