Update #1: Due to Fairbanks CDA commanding issues, this effort started at 15:13 UTC. The MHS science data was brought back online at 20:12 UTC. MIU and MHS configurations are under review by engineering.
Topic: NOAA-19 MHS Outage due to MIMU-2 to MIMU-1 Swap
April 2, 2018 2226Z
Product(s) or Data Impacted: MHS Sounding Products
Impacts on Users and Significance: MHS sounding products will be impacted.
Date/Time of Initial Impact: April 2, 2018 1330Z
Date/Time of Expected End: April 2, 2018 1630Z
Length of Outage: ~3 Hours
Details/Specifics of Change: MIMU-2 x-axis laser gyro is currently degrading at a fast rate, with an estimated failure at the end of April. As a result, NOAA-19 needs to be switched from MIMU-2 to MIMU-1. This will cause the MHS to lose its 10 Hz clock signal, which will cause it to enter fault mode. The MHS needs to then be recovered from fault mode and placed back in scan mode.
Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov at 301-817-3880 and/or other contacts as necessary
Web Site(s) for applicable information: N/A
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