Alert Administrative Message
Issued by NWS
Issued by NWS
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493 NOUS72 KNES 101319 ADMNES TOPIC: GOES-WEST HYDRAZINE BIPROPELLANT THRUSTER (HBT) FLUSH SCHEDULED FOR SEPTEMBER 25, 2026 0300 UTC DATE/TIME ISSUED: SEPTEMBER 10, 2026 1310 UTC PRODUCT(S) OR DATA IMPACTED: GOES-WEST GLM, SUVI, AND EXIS POTENTIAL PRODUCT DEGRADATION. DATE/TIME OF INITIAL IMPACT: SEPTEMBER 25, 2026 0300 UTC DATE/TIME OF EXPECTED END: SEPTEMBER 25, 2026 0310 UTC LENGTH OF DEGRADATION: 10 MINUTES DETAILS/SPECIFICS: HYDRAZINE BIPROPELLANT THRUSTER (HBT) ARE USED FOR LARGE SATELLITE MANEUVERS AND MUST BE FLUSHED PERIODICALLY TO ASSURE NOMINAL PERFORMANCE. A GOES-WEST HBT FLUSH WILL BE PERFORMED ON SEPTEMBER 25, 2026 0300 UTC. DURING THIS MANEUVER, ALL INSTRUMENTS WILL CONTINUE OPERATING. THE MANEUVER COULD CAUSE DEGRADATION TO EXIS PRODUCTS, SUVI PRODUCTS` INR PERFORMANCE, AND HAS CAUSED SEVERE GLM THROTTLE-LIMITED , FALSE EVENTS. PRODUCT NAVIGATION MAY BE DEGRADED FOR UP TO 10 MINUTES AFTER THE CONCLUSION OF THE HBT FLUSH. WEB SITE(S) FOR APPLICABLE INFORMATION: N/A CONTACT INFORMATION FOR FURTHER INFORMATION: PLEASE EMAIL USER SERVICES AT SPSD.USERSERVICES@NOAA.GOV THIS MESSAGE WAS SENT FROM ESPC.NOTIFICATION@NOAA.GOV. YOU HAVE BEEN SENT THIS AND OTHER NOTIFICATIONS BECAUSE YOU HAVE OPTED IN TO RECEIVE IT. IF FOR ANY REASON, YOU WISH TO UNSUBSCRIBE, PLEASE CONTACT ESPC HELP DESK AT ESPCOPERATIONS@NOAA.GOV OR (301) 817-3880. PLEASE NOTE: IT MAY TAKE UP TO TWO BUSINESS DAYS TO PROCESS YOUR UNSUBSCRIBE REQUEST. =