This is the AIRS, AMSU-A, and HSB weekly operations status report for Friday, December 19, 2025 (the end of week 1233 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 guard test is scheduled for Monday, December 29.  Here is the timeline (UT):
   363/22:23:00 AIRS Guard Test begins (AIRS in CHECKOUT mode)
   363/22:48:00 AIRS back in OPERATE mode

2) MODIS Lunar Calibration #254 is scheduled for Wednesday, December 31.  Here is the timeline (UT):
   365/20:31:00  AIRS put into READY mode prior to Lunar Cal  
   365/20:52:00  AIRS back in OPERATE mode

3) An AIRS photometric calibration test is scheduled for Wednesday, January 7.  Here is the timeline(UT):
   007/18:48:00  Photocal Lamp 1 On (S/C night)
   007/18:56:00  Photocal Lamps Off (S/C night)
   007/19:37:00  Photocal Lamp 1 On (S/C day)
   007/19:45:00  Photocal Lamps Off (S/C day)
   007/20:26:00  Photocal Lamp 2 On (S/C night)
   007/20:34:00  Photocal Lamps Off (S/C night)
   007/21:16:00  Photocal Lamp 2 On (S/C day)
   007/21:24:00  Photocal Lamps Off (S/C day)
   007/22:05:00  Photocal Lamp 3 On (S/C night)
   007/22:13:00  Photocal Lamps Off (S/C night)
   007/22:54:00  Photocal Lamp 3 On (S/C day)
   007/23:02:00  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/.

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William Mathews  - AIRS Instrument Operations  
NASA / Jet Propulsion Laboratory