Update #1 Final Update: The LUT vendor requested that new orbit vectors be sent to the LUT, which restored normal operations and resulted in regular solutions being generated.

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

Date/Time Issued: November 29, 2025 1424Z

Product(s) or Data Impacted: SARSAT alert data

Date/Time of Initial Impact: November 28 2025 0724Z

Date/Time of Expected End: November 29 2025 0843Z

Length of Outage: 1 Day, 1 hour, 19 minutes

Details/Specifics: The Alaska 4 LEO Ground Station is not sending pass solution data. The Lut Vendor is investigating.

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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