Update #1 - Final Update: The maintenance vendor replaced the Azimuth Encoder or Alaska 4, and the Ground Station returned to normal operations.

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

Date/Time Issued:  January 04, 2023 2040Z

Product(s) or Data Impacted:  SARSAT alert data

Date/Time of Initial Impact:   December 22, 2022 0546Z

Date/Time of Expected End:  January 04, 2023 0905Z

Length of Outage:  13 Days 3 Hours 19 Minutes

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

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