Update #1 M-bM-^@M-^S Final Update M-bM-^@M-^S The vendor replaced the Low Noise Amplifier Converter (LNC) on the Guam 1 GroundStation.TheGuam 1 LEO Ground Station returned to Normal Operations on April 27,2018 at 1725Z.

SARSATGuam1Low Earth Orbit (LEO) Ground Station Offline

Date/Time Issued: April 28, 2018 0114Z

Product(s) or Data Impacted: SARSAT alert data

Date/Time of Initial Impact: April 27, 2018 0909Z

Date/Time of Expected End: April 27, 2018 1725Z

Length of Outage: 8 hours and 16 minutes

Details/Specifics of Change:Guam1LEO Ground Station at Andersen Air Force Base,Guamhas 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.govat301-817-4576

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

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