Update #1 Final Update: The issue occurred during extremely cold temperatures, which caused problems with the antenna azimuth drive train. The LUT vendor replaced the azimuth axis encoder and driver, along with all heating elements inside the dome, returning the LUT to normal operations.
Topic: SARSAT Alaska 4 Low Earth Orbit (LEO) Ground Station Offline
Date/Time Issued: January 22, 2026 1333Z
Product(s) or Data Impacted: SARSAT alert data
Date/Time of Initial Impact: December 06, 2025 0759Z
Date/Time of Expected End: January 22, 2026 1246Z
Length of Outage: 47 days, 4 hours and 47 minutes
Details/Specifics of Change: 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 for Further Information: USMCC Operations usmcc@noaa.gov at 301-817-4576
This notification was sent to ESPC.Notification@noaa.gov mailing list. If you wish to unsubscribe or subscribe to this list, please contact ESPC Help-Desk at ESPCOperations@noaa.gov with your request. Please note: it may take up to two business days to process your request. For any additional information you can reach ESPC at 301-817-3880 (24x7)