Update #1: This is a reminder that the HBT flush will occur at 0255Z on October 10, 2024.

Topic:  GOES-18 Hydrazine Bipropellant Thruster (HBT) Flush Scheduled for October 10, 2024 

Date/Time Issued: October 09, 2024 0651Z 

Product(s) or Data Impacted: GOES-18 EXIS, SUVI, and GLM potential product degradation.

Date/Time of Initial Impact: October 10, 2024 0255Z

Date/Time of Expected End: October 10, 2024 0310Z

Length of Outage: 15 minutes

Details/Specifics of Change: HBTs are used for large satellite maneuvers and must be flushed periodically to assure nominal performance. A GOES-18 HBT Flush will be performed on October 10, 2024 at 0255Z. During this maneuver, like the previous HBT flush, 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. 

Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov or 301-817-3880

Web Site(s) for Applicable Information:

See https://www.ospo.noaa.gov/Operations/messages.html for this and other satellite-related messages.

This message was sent to ESPC.Notification@noaa.gov. You have been sent this and other notifications because you have opted in to receive them. If for any reason, you wish to unsubscribe, please contact the 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.