Update #1: This is a reminder that the HBT flush will occur at 0320Z on February 01, 2024.

Topic:  GOES-18 Hydrazine Bipropellant Thruster (HBT) Flush Scheduled for February 01, 2024 - Issued: January 19, 2024 1415Z

Date/Time Issued: January 30, 2024, 1855Z

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

Date/Time of Initial Impact: February 1, 2024, 0320Z J/Day 032

Date/Time of Expected End: February 1, 2024, 0350Z J/Day 032

Length of Outage: 30 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 February 1, 2024 at  0320 UTC. During this maneuver, unlike previous HBT flushes, ABI will continue its imaging timeline. The maneuver could cause degradation to ABI, EXIS, and SUVI products, and has caused severe GLM “throttle-limited”, false events. Product navigation may be degraded for up to 20 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.

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