Update #1 - Final Update: Guam 1 LEO Ground Station returned to Normal Operations at 2340Z, March 15, 2018.

Topic: SARSAT Guam 1 Low Earth Orbit (LEO) Ground Station Offline

Date/Time Issued: March 16, 2018 0121Z

Product(s) or Data Impacted: SARSAT alert data

Date/Time of Initial Impact: March 15, 2018 1940Z

Date/Time of Expected End: March 15, 2018 2340Z

Length of Outage: 4 hours

Details/Specifics of Change:Guam 1 LEO Ground Station at Andersen Air Force Base,Guam has stopped receiving pass solution data.The maintenance vendor is investigating the problem.

Impact:Minor-Dual satellite tracking capability lost. Distress alert detection/reporting timeliness affected.

Contact Information for Further Information:USMCC Operationsusmcc@noaa.govat 301-817-4576

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