| Acronym | Meaning |
| MP | Mod Package |
| CLNR | Cleaner |
| CES | Control Electronics System |
| U/O | Used On |
| NASA | National Aeronautics And Space Administration |
| MLG | Main Landing Gear |
| B/SC | Brake Skid Control |
| G/T | Antenna Gain-to-Noise Temperature Ratio |
| PRS | Power Reactant System (Subsystem) |
| ROS | Removable Overhead Structure |