Update #3 (Final Update):  The LUT vendor dispatched a tech to the site and the intermittent antenna issue appears to have resolved itself.  The vendor will continue to monitor Alaska 4. Alaska 4 has returned to normal operations as of November 30, 2021 at 1658Z.

Update #2: Alaska 4 is missing all passes again. The vendor has been notified.

Update #1: Alaska 4 is sending 406 data but the solution count is much lower than expected.

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

Date/Time Issued:  November 30, 2021 2208Z

Product(s) or Data Impacted:  SARSAT alert data

Date/Time of Initial Impact:      November 28, 2021 1233Z    

Date/Time of Expected End: November 30, 2021 1658Z

Length of Outage:   2 days, 4 hours and 25 minutes

Details/Specifics of Change:  The Alaska 4 (AK4) LEO Ground Station located in Fairbanks, AK  has missed two consecutive passes. The maintenance vendor has reported an intermittent azimuth antenna issue.

Impact: Minor-Dual satellite tracking capability lost. Distress alert detection/reporting may be delayed.

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

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