Update #1 - Final Update: The maintenance vendor reported that the heating system was replaced, and the Ground Station returned to normal operations.

Topic: SARSAT Alaska 4 Low Earth Orbit (LEO) Ground Station Offline

Date/Time Issued: December 22, 2022, 0843Z

Product(s) or Data Impacted: SARSAT alert data

Date/Time of Initial Impact: December 17, 2022, 2058Z

Date/Time of Expected End: December 21, 2022 2138Z

Length of Outage: 4 days and 36 minutes

Details/Specifics of Change: Alaska 4 LEO Ground Station in Fairbanks, AK is not receiving pass solution data. The maintenance vendor is investigating an antenna issue.

Impact: Minor-Dual satellite tracking capability lost. Distress alert detection/reporting timeliness affected.

Contact Information for Further Information: USMCC Operations usmcc@noaa.gov at 301-817-4576