| Acronym | Meaning |
![](file.png) | CSD | Crew Systems Division |
![](file.png) | GETIL | Ground Elapsed Time Of Landing (for TIG Of |
![](file.png) | HDST | Headset |
![](file.png) | NMT | Notification Of Master Tool |
![](file.png) | HAS | Holddown Alignment Support |
![](file.png) | D | LSC DLSMData Link Summary Message |
![](file.png) | SPS | Shuttle Procedures Simulator |
![](file.png) | SSFL | Santa Susana Field Laboratory |
![](file.png) | K-IUSN | KSC [US Notice |
![](file.png) | TTC | Tunnel Thermal Control |