<h5>Related Information</h5>&nbsp;&nbsp;&nbsp;&nbsp;Link to a downloadable spreadsheet providing <a target="_blank" href="https://cospas-sarsat.int/images/content/articles/MEOSAR_Reference_beacons_2025-12-01.xlsx">reference beacon parameters - updated 1 December 2025</a>&nbsp;&nbsp;&nbsp;&nbsp;Link to the <a target="_blank" href="https://www.gsc-europa.eu/system-service-status/sar-information/sargalileo-reference-calibration-beacons">SAR/Galileo Reference and Calibration Beacons webpage</a><hr><h4>LEGEND</h4><table style="min-width: 148px;"><colgroup><col style="min-width: 25px;"><col style="width: 123px;"></colgroup><tbody><tr><td colspan="1" rowspan="1">Available</td><td colspan="1" rowspan="1" colwidth="123" style="background-color: rgb(146, 208, 80);">A</td></tr><tr><td colspan="1" rowspan="1">Not Available</td><td colspan="1" rowspan="1" colwidth="123" style="background-color: rgb(255, 0, 0);">N/A</td></tr></tbody></table>

<h4>Information relative to LEOSAR satellites</h4>Cospas-15: FOC since 15-Nov-2025 Cospas-16: FOC since 15-Nov-2025Sarsat-07: Decommissioned on 19-Aug-25 Sarsat-10: Decommissioned on 6-Jun-25 Sarsat-12: Decommissioned on 11-Aug-25 Sarsat-13: Operating beyond its designed lifetime. Subject to satellite manoeuvres. It was turned off due to possible interference with other LEOSAR satellites, reactivated on 5-Feb-25 and declared back in service on 5-Mar-25<h4>Legend</h4><table style="min-width: 50px;"><colgroup><col style="min-width: 25px;"><col style="min-width: 25px;"></colgroup><tbody><tr><td colspan="1" rowspan="1">Conforming</td><td colspan="1" rowspan="1" style="background-color: rgb(0, 217, 54);">Green</td></tr><tr><td colspan="1" rowspan="1">Non-Conforming</td><td colspan="1" rowspan="1" style="background-color: rgb(255, 52, 0);">Red</td></tr><tr><td colspan="1" rowspan="1">Not Applicable or Not Available</td><td colspan="1" rowspan="1" style="background-color: rgb(197, 197, 197);">n/a</td></tr></tbody></table>

<h4>Information relative to GEOSAR satellites</h4>Arktika-M No.1: Additional payload moving on highly-elliptical-orbit satellite to cover the Arctic region. Payload similar to Electro-L GEOSAR payloads. Arktika-M No.2: Additional payload moving on highly-elliptical-orbit satellite to cover the Arctic region. Payload similar to Electro-L GEOSAR payloads Electro-L No.2: moved to 14.5 W, transponder switched on (FOC), associated with GEOLUT-2736 (FOC). Station keeping: ±2.0° long. &amp; lat Electro-L No.3: moved to 76 E, at FOC since 23 December 2021, associated with GEOLUT-2735 (FOC) Electro-L No.4: FOC since 25 December 2024 GOES-16: In-orbit spare. Replaced by GOES-19 on 7 April 2025. GOES-18: GOES-West satellite. GOES-19: GOES East Satellite. Replaced GOES-16 on 7 April 2025. GSAT-17: FOC since 22 May 2024 INSAT-3D: Station keeping: ±0.02° long.; ± 0.00° lat. INSAT-3DR: Station keeping: ±0.02° long.; ± 0.00° lat. Louch-5A: FOC. Moving on a geosynchronous orbit. Commissioned for active-tracking-capable antenna. Commissioning report approved at CSC-62. Station keeping: ±0.1° long.; ± 4° lat. Louch-5V: FOC since 29-Mar-2023. Station keeping: ±0.1° long.; ± 4° lat. MSG-2: Subject to periodic manoeuvers MSG-3: Replaced by MTG-I1 on 7-Nov-24. In-orbit spare. Planned to replace MSG-2. Subject to periodic manoeuvres. Station keeping: ±0.87° long. MSG-4: Subject to periodic manoeuvres. MTG-I1: Replacing MSG-3 since 7-Nov-24. Station keeping: ±0.3° long.; ± 1° lat. (SAsM/SRM ± 0,5° long)<h4>Legend</h4><table style="min-width: 50px;"><colgroup><col style="min-width: 25px;"><col style="min-width: 25px;"></colgroup><tbody><tr><td colspan="1" rowspan="1">Conforming</td><td colspan="1" rowspan="1" style="background-color: rgb(0, 217, 54);">Green</td></tr><tr><td colspan="1" rowspan="1">Non-Conforming</td><td colspan="1" rowspan="1" style="background-color: rgb(255, 52, 0);">Red</td></tr><tr><td colspan="1" rowspan="1">Not Applicable or Not Available</td><td colspan="1" rowspan="1" style="background-color: rgb(197, 197, 197);">n/a</td></tr></tbody></table>

<h4>Legend</h4><table style="min-width: 195px;"><colgroup><col style="width: 170px;"><col style="min-width: 25px;"></colgroup><tbody><tr><td colspan="1" rowspan="1" colwidth="170">Conforming</td><td colspan="1" rowspan="1" style="background-color: rgb(0, 217, 54);">Green+</td></tr><tr><td colspan="1" rowspan="1" colwidth="170">Conforming</td><td colspan="1" rowspan="1" style="background-color: rgb(0, 217, 54);">Green</td></tr><tr><td colspan="1" rowspan="1" colwidth="170">Non-Conforming, Moderate Degradation</td><td colspan="1" rowspan="1" style="background-color: rgb(255, 243, 88);">Yellow</td></tr><tr><td colspan="1" rowspan="1" colwidth="170">Non-Conforming</td><td colspan="1" rowspan="1" style="background-color: rgb(255, 52, 0);">Red</td></tr><tr><td colspan="1" rowspan="1" colwidth="170">No Information</td><td colspan="1" rowspan="1" style="background-color: rgb(197, 197, 197);">n/i</td></tr><tr><td colspan="1" rowspan="1" colwidth="170">Not Available</td><td colspan="1" rowspan="1" style="background-color: rgb(197, 197, 197);">n/a</td></tr></tbody></table>

<h4>QMS Instructions</h4>Conforming means that this LUT/satellite pair has been subjected to detailed monitoring procedures and data transmission requirements and successfully meets the standard evaluation criteria described in document&nbsp;C/S A.003.&nbsp;Non-conforming means that the evaluation criteria were not met. When accuracy criteria are not met, this means that independent location data from this LUT/satellite pair are not available to the System, e.g., only encoded data are distributed. When availability criteria are not met, limited data (or possibly no data) are available to the System.<h4>QMS Methodology</h4>The status of System components is monitored on a continuous basis using 406-MHz transmissions of orbitography and reference beacons. Nodal Mission Control Centres run an automated data analysis and assessment procedure daily on a dataset collected in a defined time window, which varies by assessment type.To be depicted as conforming, the availability for a LEOLUT/satellite pair shall be greater than or equal to 80% for at least one of the most recent 4 three-day periods. Four consecutive three-day periods with a non-conforming calculation (&lt; 80%) are required for a LEOLUT/satellite pair to be declared non-conforming and listed as such on the QMS status board of the Cospas-Sarsat website. No data is suppressed as a consequence of a non-conforming availability status.To be depicted as conforming, the availability for a GEOLUT/satellite pair shall be greater than or equal to 80% for at least one of the most recent 4 one-day periods. Four consecutive days with a non-conforming calculation (&lt; 80 %) are required for a GEOLUT/satellite pair to be declared non-conforming and listed as such on the QMS status board of the Cospas-Sarsat website. No data is suppressed as a consequence of a non-conforming availability status.To continue to be depicted as conforming, the Doppler location accuracy for a LEOLUT/satellite pair that is currently deemed conforming shall meet the following requirements over the subsequent three-day period:<ul><li>The 5 km accuracy ratio shall be greater than or equal to 60%.</li><li>The 20 km accuracy ratio shall be greater than or equal to 80%.</li></ul>To be depicted as conforming, the Doppler location accuracy for a LEOLUT/satellite pair that is currently deemed non-conforming shall meet the following requirements over the subsequent three-day period:<ul><li>The 5 km Doppler location accuracy ratio shall be greater than or equal to 95%.</li><li>The 10 km Doppler location accuracy ratio shall be greater than or equal to 98%.</li></ul>Data from LEOLUT/satellite pairs that do not meet these requirements are suppressed.Note: It is recognised that the 3-day data requirement to compute the accuracy ratio may introduce a three-day latency for resuming Doppler location data distribution after the LEOLUT nonconformity is corrected.Note: On occasion, satellite downlink signals will be switched off or LUTs/MCCs will undergo planned maintenance or software upgrades. In these cases the non-conforming status of the LUTs and MCCs should be taken in context.<h4> QMS Objectives</h4>To ensure coherent and reliable System operation, Cospas-Sarsat Ground Segment Providers perform routine and periodic System monitoring to ensure ground segment equipment meets performance standards. In addition, Cospas-Sarsat maintains a Quality Management System (QMS).The procedures for continuous monitoring and objective assessment of the System which form the basis of the QMS are described in section 2 of document C/S A.003 "Cospas-Sarsat System Monitoring and Reporting".Cospas-Sarsat is committed to maintaining a System that provides accurate, timely and reliable distress alert and location data, as stated in the Cospas-Sarsat Quality Policy, provided in section 4 of document C/S P.015 “Cospas-Sarsat Quality Manual”.The Cospas-Sarsat Quality Management System (QMS) objectives stated at section 7 of the document C/S P.015 "Cospas-Sarsat Quality Manual" are to:<ul><li>ensure that Cospas-Sarsat consistently provides accurate, timely and reliable distress alert and location information to search and rescue authorities, and</li><li>continually improve the overall Cospas-Sarsat System Performance.</li></ul>

<h5>Notes</h5><ol><li>The DASS S-band constellation is not planned to be declared as operational, but its data may be used operationally.</li><li>Not equipped with a SAR repeater, but used for the return link service.</li></ol>See <a target="_blank" href="https://www.gsc-europa.eu/system-service-status/sar-information">https://www.gsc-europa.eu/system-service-status/sar-information</a> for more information regarding the status of Galileo satellites.<h5>Related Information</h5>Click on the following links to connect to updated information developed since the last release of document C/S T.016:<ul><li><a target="_blank" href="https://cospas-sarsat.int/images/content/articles/MEOSAR_Satellite_Identification_Parameters_v2025-04-28.xlsx">MEOSAR satellite&nbsp;identification parameters</a></li><li><a target="_blank" href="https://cospas-sarsat.int/images/content/articles/RF_Configuration_of_MESOAR_Satellites_v2022-12-14.xlsx">RF configuration</a>&nbsp;of the MEOSAR satellites (including filter settings)</li><li>Sources of information on&nbsp;<a target="_blank" href="https://cospas-sarsat.int/images/content/articles/Annex_A_from_T016-FEB-2019_-_Information_for_MEOLUT_Operators.pdf">orbital parameters</a>&nbsp;of MEOSAR satellites</li></ul>Click here for&nbsp;<a target="_blank" href="https://cospas-sarsat.int/en/system/space-segment-status-pro/satellite-details">Additional Details about LEOSAR and GEOSAR Satellites</a><hr><h4>LEGEND</h4><table style="width: 603px;"><colgroup><col style="width: 123px;"><col style="width: 480px;"></colgroup><tbody><tr><td colspan="1" rowspan="1" colwidth="123" style="background-color: rgb(204, 255, 204);">A</td><td colspan="1" rowspan="1" colwidth="480">Available for ground segment testing</td></tr><tr><td colspan="1" rowspan="1" colwidth="123" style="background-color: rgb(153, 204, 102);">F</td><td colspan="1" rowspan="1" colwidth="480">Fully Operational</td></tr><tr><td colspan="1" rowspan="1" colwidth="123" style="background-color: rgb(216, 120, 103);">NO</td><td colspan="1" rowspan="1" colwidth="480">Not Operational</td></tr><tr><td colspan="1" rowspan="1" colwidth="123" style="background-color: rgb(152, 220, 220);">L</td><td colspan="1" rowspan="1" colwidth="480">Limited Operations</td></tr><tr><td colspan="1" rowspan="1" colwidth="123" style="background-color: rgb(204, 204, 255);">IOC</td><td colspan="1" rowspan="1" colwidth="480">Initial Operational Capability</td></tr><tr><td colspan="1" rowspan="1" colwidth="123" style="background-color: rgb(255, 102, 255);">OFF</td><td colspan="1" rowspan="1" colwidth="480">Repeater Turned Off</td></tr><tr><td colspan="1" rowspan="1" colwidth="123" style="background-color: rgb(236, 243, 22);">UT</td><td colspan="1" rowspan="1" colwidth="480">Under Test</td></tr><tr><td colspan="1" rowspan="1" colwidth="123">n/a</td><td colspan="1" rowspan="1" colwidth="480">Not Applicable</td></tr><tr><td colspan="1" rowspan="1" colwidth="123">AGC</td><td colspan="1" rowspan="1" colwidth="480">Automatic Gain Control</td></tr><tr><td colspan="1" rowspan="1" colwidth="123">TBD</td><td colspan="1" rowspan="1" colwidth="480">To Be Determined</td></tr><tr><td colspan="1" rowspan="1" colwidth="123">WFA</td><td colspan="1" rowspan="1" colwidth="480">Wideband filter and ALC</td></tr><tr><td colspan="1" rowspan="1" colwidth="123">NFA</td><td colspan="1" rowspan="1" colwidth="480">Narrowband filter and ALC</td></tr><tr><td colspan="1" rowspan="1" colwidth="123">WFF</td><td colspan="1" rowspan="1" colwidth="480">Wideband filter and fixed gain</td></tr><tr><td colspan="1" rowspan="1" colwidth="123">NFF</td><td colspan="1" rowspan="1" colwidth="480">Narrowband filter and fixed gain</td></tr></tbody></table>

<h4>Legend</h4><table style="width: 200px;"><colgroup><col style="width: 134px;"><col style="width: 66px;"></colgroup><tbody><tr><td colspan="1" rowspan="1" colwidth="134">Fully Operational</td><td colspan="1" rowspan="1" colwidth="66" style="background-color: rgb(0, 217, 54);">F</td></tr><tr><td colspan="1" rowspan="1" colwidth="134">Backed up</td><td colspan="1" rowspan="1" colwidth="66" style="background-color: rgb(255, 243, 88);">BU</td></tr><tr><td colspan="1" rowspan="1" colwidth="134">Not Operational</td><td colspan="1" rowspan="1" colwidth="66" style="background-color: rgb(255, 52, 0);">NO</td></tr></tbody></table>

QMS Automated Reporting System

MCC Availability

Legend