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*CORRECTION: *REMOVED INFORMATION IN SIGNATURE


*TOPIC:* NOAA-21 INCLINATION ADJUSTMENT MANEUVER (IAM) 002 SCHEDULED FOR
APRIL 15TH, 2026


*DATE/TIME ISSUED:* APRIL 13TH, 2026 20:15Z 2029Z


*PRODUCT(S) OR DATA IMPACTED:* ALL NOAA-21 SENSOR DATA


*DATE/TIME OF INITIAL IMPACT:* APRIL 15TH, 2026  *16:14:09Z*


*DATE/TIME OF EXPECTED END: *APRIL 15TH, 2026 * 16:51:42Z*


*LENGTH OF OUTAGE:* SEE DETAILS.


*DETAILS/SPECIFICS: *APRIL 15TH, 2026 AT 16:34:23Z


NOAA-21 WILL PERFORM A 91.57 SECOND PROPULSIVE INCLINATION ADJUSTMENT
MANEUVER (IAM)

TO MAINTAIN MEAN LOCAL TIME OF THE ASCENDING NODE WHILE CONTROLLING THE
REPEATING GROUND TRACK BOX.

THE FOLLOWING OBSERVATORY SYSTEMS WILL BE AFFECTED ON APRIL 15TH, 2026:

16:14:09Z     16:44:43Z  OMPS IN DECON MODE, SCIENCE DATA WILL NOT BE
AVAILABLE

16:24:09Z     16:51:42Z  HRD WILL BE OFF, DATA FOR DIRECT BROADCAST USERS
WILL BE UNAVAILABLE

16:24:16Z     16:46:42Z  NOAA-21 POINTING OFF-NADIR, COLLECTED DATA DURING
THAT TIME PERIOD MAY

BE IMPACTED AND NOT DISSEMINATED

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YOU WISH TO UNSUBSCRIBE OR SUBSCRIBE TO THIS LIST, PLEASE CONTACT ESPC
HELP-DESK AT ESPCOPERATIONS@NOAA.GOV WITH YOUR REQUEST. PLEASE NOTE: IT MAY
TAKE UP TO TWO BUSINESS DAYS TO PROCESS YOUR REQUEST. FOR ANY ADDITIONAL
INFORMATION YOU CAN REACH ESPC AT 301-817-3880 (24X7).

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