Subject: SARSAT Outage/Anomaly: Update #1 SARSAT Satellite S11 (METOP This is a multi-part message in MIME format. --Boundary_(ID_JBy2Bpgz88g4yQWt32VDIg) Content-type: text/plain; charset=utf-8; format=flowed Content-transfer-encoding: 7BIT *Update #1: *All US Low Earth Orbit (LEO) Ground Stations are producing accurate S11 SARP solutions. Normal distribution of SARP solution data has resumed for all US LEOLUTs. *Topic:* SARSAT Satellite S11 (METOP A) Search and Rescue Processor (SARP) anomaly *Date/Time Issued: * February 15, 2018 2305Z *Product(s) or Data Impacted:* SARSAT alert data *Date/Time of Initial Impact:* February 14, 2018 0558Z *Date/Time of Expected End: *February 15, 20182035Z *Length of Outage:* 39 hours, 37 minutes *Details/Specifics of Change:*It was determined that the S11 SARP failed around 0558 UTC on 14 February. This was most likely due to acorrupted SRAM that is correctable by an instrument SW RESET. USMCC notified the French MCC (FMCC) of the issue. FMCC notified all MCCs that a SARP reset has been requested from EUMETSAT at 1410 UTC. USMCC received Telemetry confirmation at 1751 that SARP had been reset at 1525 UTC. USMCC recommended all MCCs to filter S11 SARP data at 1755 UTC. At 0908 UTC 15 February FMCC notified all MCCs that new S11 TCAL will be distributed shortly. At 0912 UTC 15 February FMCC sent new TCAL for S11. The USMCC is removing filters as LUTs are reporting accurate solutions. Six of the 9 US LEOLUT have reported accurate solutions after the new TCAL was installed. *Impact: *Medium-Loss of Storage/forward capability. Satellite is limited to real-time/local distress detection and relay. Timeliness of global coverage detection and relay affected. *Contact Information for Further Information: *USMCC Operations usmcc@noaa.gov at 301-817-4576 *Web Site(s) for applicable information:*N/A --Boundary_(ID_JBy2Bpgz88g4yQWt32VDIg) Content-type: text/html; charset=utf-8 Content-transfer-encoding: 8BIT

Update #1:  All US Low Earth Orbit (LEO) Ground Stations are producing accurate S11 SARP solutions. Normal distribution of SARP solution data has resumed for all US LEOLUTs.

Topic:  SARSAT Satellite S11 (METOP A) Search and Rescue Processor (SARP) anomaly

Date/Time Issued:  February 15, 2018 2305Z

Product(s) or Data Impacted:  SARSAT alert data

Date/Time of Initial Impact:  February 14, 2018 0558Z

Date/Time of Expected End:   February 15, 2018 2035Z

Length of Outage:  39 hours, 37 minutes

Details/Specifics of Change: It was determined that the S11 SARP failed around 0558 UTC on 14 February.  This was most likely due to a corrupted SRAM that is correctable by an instrument SW RESET.

USMCC notified the French MCC (FMCC) of the issue.  

FMCC notified all MCCs that a SARP reset has been requested from EUMETSAT at 1410 UTC.  

USMCC received Telemetry confirmation at 1751 that SARP had been reset at 1525 UTC.

USMCC recommended all MCCs to filter S11 SARP data at 1755 UTC. 

At 0908 UTC  15 February FMCC notified all MCCs that new S11 TCAL will be distributed shortly.

At 0912 UTC 15 February FMCC sent new TCAL for S11.

The USMCC is removing filters as LUTs are reporting accurate solutions.  

Six of the 9 US LEOLUT have reported accurate solutions after the new TCAL was installed.

Impact:  Medium-Loss of Storage/forward capability. Satellite is limited to real-time/local distress detection and relay. Timeliness of global coverage detection and relay affected.

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

Web Site(s) for applicable information: