| Acronym | Meaning |
![](file.png) | IPAD | Integrated Program For Aerospace Vehicle Design |
![](file.png) | GCILU | Ground Control Interface Logic Unit |
![](file.png) | HD | Heavy Duty |
![](file.png) | SL-SSS | Spacelab Subsystem(s) Segment |
![](file.png) | CFD | Converter |
![](file.png) | UA | Microampere |
![](file.png) | TRBL | Troubleshooting |
![](file.png) | RLY | Relay |
![](file.png) | CTIS | Crawler Transporter Intercom System |
![](file.png) | MDM | Manipulator Deployment Mechanism |