Update #1 Final Update: Search and Rescue Processor (SARP) was functioning properly; the issue was due to the orbit vectors. Naval Space Command personnel provided updated TLEs, which were sent to the satellite, resolving the issue and restoring normal operations.

Topic: SARSAT Satellite S7 (NOAA-15) Search and Rescue Processor (SARP) Anomaly

Date/Time Issued: March 27, 2025 1750Z

Product(s) or Data Impacted: SARSAT alert data

Date/Time of Initial Impact: March 26, 2025 1925Z

Date/Time of Expected End: March 27, 2025 1210Z

Length of Outage: 16 hours and 45 minutes.

Details/Specifics of Change: A SARP anomaly occurred on S13 where the the data memory was locked up and not reporting new data

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

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