GPS-4000S Global Positioning System Notification
Owners of GPS-4000S 822-2189-100 and GLU-2100 822-2532-100 with SW Prior to CPN COL4C-0087-0003
"In the event that the unit software has not been updated prior to May 5th, 2024, Collins Aerospace advises that the unit be powered off for the ENTIRE WEEK from May 5th, 2024 00:00:00 UTC to May 12th, 2024, 00:00:00 UTC."
“Power Down (TURN OFF) the LRU PRIOR TO May 5th, 2024, 00:00:00 UTC and do not Power On the unit until AFTER May 12th, 2024, 00:00:00 UTC. This will prevent the LRU from Locking up and encountering a loss of availability and requiring the NVM to be cleared.” It is Critical to Note the TIME is Midnight UTC, NOT Local Time.

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