Update #1 - Final Update: The Maintenance Vendor Replaced the motor for Alaska 4 and it returned to normal operations at 1946Z  on March 21, 2023.


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


Date/Time Issued: March 21, 2023 2054Z


Product(s) or Data Impacted:  SARSAT alert data


Date/Time of Initial Impact:  February 28, 2023 0358Z


Date/Time of Expected End: March 21, 2023 1946Z


Length of Outage: 21 days, 15 hours and 48 minutes


Details/Specifics of Change: Alaska 4 LEO Ground Station in Fairbanks, AK is not sending the expected amount of pass solution data. The maintenance vendor has been notified.


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


Web Site(s) for applicable information: N/A


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