I-3 to I-4 services migration

Due to the transfer of 3rd generation Inmarsat services to I-4 satellites, coverage will change, and users will need to make sure that their devices are directed to the appropriate satellite. This process is usually automatically and controlled by the terminal without the need for user intervention. However, in some cases, users need to manually reassign their devices to the appropriate satellite.

Inmarsat C users must ensure that their local applications (for example, data reports) will work correctly if they use a different Inmarsat satellite and are encouraged to contact the vendor for any support.
Users of Classic Aero and Swift 64 are encouraged to contact equipment manufacturers to confirm whether a configuration update is required to support migration.

Each step of the transition will result in a short outage, and the services will be moved to the appropriate satellite. Under the guidance of the International Mobile Satellite Organization (IMSO), the Global Maritime Distress Safety System (GMDSS) and the Maritime Safety Service, as well as Classic Aero safety Services, will be closely monitored during migration. These security services will be restored to the highest priority.

Today, the Migration of the Classic Aero, Fleet 77, Swift 64 and Inmarsat C services (including Aero C and Mini C) from the East Atlantic Ocean (AORE) * I-3 F2 to I-3 F5 satellite was successfully completed on October 30, 2018, start at 11:00 UTC. 

 After this migration, there was a change in satellite coverage for the Inmarsat C service at AORE (see more here) :

Inmarsat continuously monitors systems to ensure that services are restored to normal levels and provides additional information where necessary during the entire post-migration phase.

"Our main goal is to ensure that the transition process is as seamless as possible with minimal disruption caused by our customers and partners."

The transition of services from I-3 to our constellation I-4 began at the beginning of this year. The task was to transfer all services (Classic Aero, Fleet 77, Swift 64 and Inmarsat C) of the satellite to the satellite, according to the schedule shown in the table below:

I-3 Migration to I-4	Operating schedule
Atlantic Ocean Region West (AORW) I-3 to America (AMER) I-4	Services Classic Aero, Fleet 77 and Swift 64 - migration completed successfully May 3, 2018  Inmarsat C services (including Aero C and Mini C) - migration successfully completed on May 9, 2018
Pacific Region (POR) I-3 in Asia Pacific (APAC) I-4	Classic Aero, Fleet 77, Swift 64 and Inmarsat C (including Aero C and Mini C) - migration completed successfully on August 29, 2018
Eastern Atlantic Ocean Region (AORE) * I-3 F2 moved to I-3 F5	Classic Aero, Fleet 77, Swift 64 and Inmarsat C (including Aero C and Mini C) - the migration was successfully completed on October 30, 2018, starting at 11:00 UTC
Indian Ocean Region (IOR) I-3 to Europe / Middle East / Asia (EMEA) I-4	Classic Aero, Fleet 77, Swift 64 and Inmarsat C (including Aero C and Mini C) to be held on December 12, 2018 at 12:00 UTC

* Note: AORE is part of the overall I-3-I-4 migration program, but it did not move to the I-4 constellation, it remained in the I-3 constellation.