This is the AIRS, AMSU-A, and HSB weekly operations status report for Friday, February 27, 2026 (the end of week 1243 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) MODIS Lunar Calibration #256 is scheduled for Saturday, February 28.  Here is the timeline (UT):
   059/19:01:00  AIRS put into READY mode prior to Lunar Cal  
   059/19:22:00  AIRS back in OPERATE mode

2) An AIRS guard test is scheduled for Sunday, March 1.  Here is the timeline (UT):
   060/21:30:00 AIRS Guard Test begins (AIRS in CHECKOUT mode)
   060/21:57:00 AIRS back in OPERATE mode

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://airsnrt.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://airsnrt.jpl.nasa.gov/report/latest and https://airsnrt.jpl.nasa.gov/report/archive/.

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William Mathews  - AIRS Instrument Operations  
NASA / Jet Propulsion Laboratory