| Acronym | Meaning |
 | HFX | High Frequency Transceiver |
| CDMS | Command And Data Management System |
| PCF | Payload Control Facility |
| NITROGEN | PNitrogen Purge Control |
| RUT | Resource Utilization Time |
| LOWG | Landing Operations Working Group |
| CWA | Caution And Warning Annunciator |
| CTP | Communications Timing Procedure |
| SF | Sliding Filter |
| GOSS | GrGOSSGround Operations Support System |
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