This is the AIRS, AMSU-A, and HSB weekly operations status report for Friday, March 21, 2025 (the end of week 1193 of the Aqua mission). AIRS: The AIRS instrument remains healthy with all voltages, currents, and temperatures as expected. AMSU-A1: AMSU-A1 is healthy except for channels 4, 5, 6, and 7. AMSU-A2: AMSU-A2, which provided channels 1 and 2 of the AMSU-A suite, suffered a non-recoverable loss of power on September 24, 2016 and is no longer operational. HSB: HSB has been non-operational since February 2003 due to a scanner anomaly. Instrument activities since previous report: There were no instrument activities this past week. Upcoming events: 1) An AIRS photometric calibration test is planned for Monday, April 7. This activity has not been scheduled. 2) An AIRS guard test is planned for Monday, April 7. This activity has not been scheduled. 3) MODIS Lunar Calibration #245 is planned for Wednesday, April 9. The AIRS activities accompanying the MLC have not been scheduled. Daily plots of noise levels for each AIRS channel are available on the AIRS webpage at https://airs.jpl.nasa.gov/mission/instrument-operations/. A link there currently points to where the files are hosted at https://thunder.jpl.nasa.gov/nedt_trends/html/airs_channel_nedt_trends.html. For each channel there are plots for the whole AIRS mission and for the last 2 months. Going forward, weekly Ops status updates will be archived at the same webpage above, and are hosted at https://airsteam.jpl.nasa.gov/report/latest and https://airsteam.jpl.nasa.gov/report/archive/. ================================================================== William Mathews - AIRS Instrument Operations NASA / Jet Propulsion Laboratory