This is the AIRS, AMSU-A, and HSB weekly operations status report for Friday, July 19, 2024 (the end of week 1159 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 Monday, July 15.  Here is the timeline (UT):
   197/21:48:00 AIRS Guard Test begins (AIRS in CHECKOUT mode)
   197/22:15:00 AIRS back in OPERATE mode

Upcoming events:

1) An AIRS OBC Float test is planned, and a date for the test has been set by the AIRS team, although it has not been scheduled yet.
The test is planned to start on Monday, July 29 and last for about 52 hours.  A special gain table will be loaded to Aqua for use in the test.
The planned date for the gain table upload is Wednesday, July 24.
Prior to the OBC float test, the gain table will be loaded and made operational for a short time, about 25 minutes, on Thursday, July 25.
Here is a tentative timeline (UT).  Times, where given, are approximate.

206/TBD   	Aqua FOT loads calibration gain table to Aqua ISC
207/17:00 	Set AIRS opmode to READY
207/17:00 	Load calibration table to AIRS
207/17:25 	Load Optimum (nominal) gain table to AIRS
207/17:26 	AIRS back in OPERATE mode
211/17:00 	Set AIRS opmode to READY
211/17:00 	Load calibration gain table to AIRS
211/17:01 	Turn OBC heater off
213/04:20 	Rotate scan profile to OBC
213/04:45 	Rotate scan profile to nadir
213/05:00 	Turn OBC heater on
213/21:00 	Load Optimum (nominal) gain table to AIRS
213/21:01 	AIRS back in OPERATE mode

2) Separately from the OBC Float gain table, a new Optimum (normal operations) gain & circumvention table will be uploaded.
The upload has not been scheduled yet.

3) An AIRS photometric calibration test is planned for Wednesday, August 7.  This activity has not been scheduled yet.

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