Guidance

Safety Bulletin 28 - JRC navigation and communication equipment

Published 22 April 2022

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This publication is available at https://www.gov.uk/government/publications/safety-bulletin-28-jrc-navigation-and-communication-equipment/safety-bulletin-28-jrc-navigation-and-communication-equipment

Summary of issue

The Maritime and Coastguard Agency would like to make operators aware that products with JRC Global Positioning System (GPS) chips for position or UTC (Coordinated Universal Time), may produce an error on May 15th 2022 at 00:00 AM (UTC). The problem affects products listed in Annex 1 and includes navigation and communication equipment.

This may result in:

  • Loss of scheduled transmission; LRIT and VMS transmission functions.
  • Incorrect date in the transmitted data and log function.
  • Inmarsat network registration and communication failure.

Actions to take

  1. Check that your JRC equipment is listed in Annex 1.
  2. If it is listed, see the JRC website

Owners are responsible for the correct operation and maintenance and should contact JRC for advice.

Safety Bulletin No.13 – 19th February 2019.

Annex 1

Affected models:

Equipment Type Models Serial Numbers Notice
Inmarsat-C JUE-85 GR10251 – GR23738 Scheduled transmission, LRIT and VMS transmission functions are stopped. The date in the transmitted data and the log function returns to the starting date.
Inmarsat
mini-C		 JUE-95SA GR10051 – GR23188 Scheduled transmission, LRIT and VMS transmission functions are stopped. The date in the transmitted data and the log function returns to the starting date.
Inmarsat
mini-C		 JUE-95LT GR11703 – GR23598 Scheduled transmission, LRIT and VMS transmission functions are stopped. The date in the transmitted data and the log function returns to the starting date.
Inmarsat
mini-C		 JUE-95VM GR10001 – GR23593 Scheduled transmission, LRIT and VMS transmission functions are stopped. The date in the transmitted data and the log function returns to the starting date.
Inmarsat Fleet Broadband FB250 JUE-250 All The registration process to the Inmarsat network fails and communication becomes impossible. The date of the internal clock and log function of the device returns to the starting date.
GPS Navigator JLR-7700MKII After KE47190 Note that time and date will go back to the starting date (September 29, 2002) when a master-reset of equipment or a battery replacement is carried out after rollover day.
GPS Receiver JLR-4330 After KE54239 Note that time and date will go back to the starting date (September 29, 2002) when a master-reset of equipment or a battery replacement is carried out after rollover day.
GPS Receiver JLR-4331 After KE50479 Note that time and date will go back to the starting date (September 29, 2002) when a master-reset of equipment or a battery replacement is carried out after rollover day.
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