Update on the first migration dates

Following our previous I-3 to I-4 migration notice issued in February, please find below an update on the dates for the first migration of services from the Atlantic Ocean Region West (AORW) I-3 satellite to the Americas (AMER) I-4 satellite.

This migration will be performed in two stages:

  • Migration of Fleet 77, Swift 64 and Classic Aero services is scheduled to take place on 30 April 2018 at 17:30 UTC (subject to final confirmation).
  • Migration of Inmarsat C (to include Aero C and Mini C) services has been rescheduled to take place on 09 May 2018 at 14:00 UTC.

Our primary objective is to ensure that the transition process is as seamless as possible for our partners and customers.

The transition of services from the I-3 fleet onto our I-4 constellation will continue throughout 2018 and will take approximately nine months to complete. Our approach is to migrate all services (Inmarsat C, Fleet 77, Swift 64 and Classic Aero), satellite by satellite, as per the schedule shown in the table below.

I-3 to I-4 migration Timing
Atlantic Ocean Region West (AORW) I-3 to Americas (AMER) I-4 Fleet 77, Swift 64 and Classic Aero services – 30 April 2018 at 17:30 UTC (subject to final confirmation)

Inmarsat C (to include Aero C and Mini C) services – 09 May 2018 at 14:00 UTC

Pacific Ocean Region (POR) I-3 to Asia/Pacific (APAC) I-4 End Q2 2018
Atlantic Ocean Region East (AORE) I-3 F2 moved to I-3 F5 End Q3 2018
Indian Ocean Region (IOR) I-3 to Alphasat EMEA I-4 End Q4 2018

Due to the move from the I-3 to the I-4 satellites, the coverage areas will change and users will need to ensure that their devices are pointed to the relevant satellite. This process will generally be managed automatically by the terminal without the need for user intervention. However, in some instances, users will need to manually repoint their devices to the appropriate satellite.

  • Inmarsat C users should ensure that their local applications (e.g. data reporting) will operate correctly if they are using a different Inmarsat satellite and are advised to contact their applications provider for any support.
  • Classic Aero and Swift 64 users are advised to contact their equipment manufacturers to confirm whether a configuration update will be required to support the migration.

Each migration step will cause a short outage while services are moved onto the I-4 satellites. Under supervision of the International Mobile Satellite Organisation (IMSO), the Global Maritime Distress Safety System (GMDSS) and Maritime Safety Services will be closely monitored during the migration, as will the Classic Aero Safety Service. These safety services will be restored first with the highest priority.

Final dates for the transfer of services of the POR, AORE and IOR will be confirmed approximately six weeks prior to the start of each migration to the corresponding satellite.

We will continue to communicate with you throughout the planning and execution phases of the migrations, providing additional details as and when necessary.

If you have any questions or concerns, please contact your Inmarsat representative, who will be able to assist.

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