This is the AIRS, AMSU-A, and HSB weekly operations status report for Friday, December 27, 2024 (the end of week 1181 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: An AIRS guard test ran on Sunday, December 22. This guard loaded the new gain tables to the AIRS instrument. Here is the timeline (UT): 357/22:25:00 AIRS Guard Test begins (AIRS in CHECKOUT mode) 357/22:52:00 AIRS back in OPERATE mode Upcoming events: 1) An AIRS photometric calibration test using lamp 3 is scheduled for Tuesday, January 7, 2025. Here is the timeline (UT): 007/21:33:00 Photocal Lamp 3 On (S/C night) 007/21:41:00 Photocal Lamps Off (S/C night) 007/22:22:00 Photocal Lamp 3 On (S/C day) 007/22:30:00 Photocal Lamps Off (S/C day) 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