Safety Bulletin 25 Furuno navigation & communication equipment (incl GMDSS) - GPS week number rollover
Published 14 December 2021
© Crown copyright 2021
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1. Summary of issue
The Maritime & Coastguard Agency would like to make operators aware that products with Furuno Global Positioning System (GPS) chips for position or UTC (Coordinated Universal Time), may produce an error on January 2nd, 2022. The problem affects products listed in Annex 1 and includes navigation and communication equipment.
Stand-alone Furuno GPS receivers and equipment using Furuno GPS chips, could produce data that is 19.7 years in the past, therefore generating errors in both the GPS position and date (19th May 2002).
The 19.7 year date error may result in instability in positioning, causing position errors, including failure of GPS position acquisition, etc.
1.1 Actions to take
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Cold-start the equipment through the operating menu. The procedure for each affected equipment is stated in Annex 2. Please note, although you should reacquire the GPS position, date information cannot be restored by cold-starting;
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If GPS position is not reacquired after cold-starting, the problem may stem from failure of the equipment itself not from GPS week number rollover. If this is the case, contact a nearby Furuno authorised marine electronics dealer;
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To restore the correct date for the models with an available remedy, contact a nearby Furuno authorised marine electronics dealer to replace the GPS receiver inside the device or update the software/firmware (both for a fee);
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If there is no available remedy for your model it is likely that the equipment will need replacing entirely. If this is the case, contact a nearby marine electronics specialist.
1.2 Legal requirements
Owners are responsible for the correct operation and maintenance and should contact Furuno for advice.
1.3 Further information
See Furuno UK website for the latest information: https://support.furuno.co.uk/en_US/news/gps-rollover-january-2022
1.4 Related Documents
Safety Bulletin No.13 – 19th February 2019
2. Annex 1
2.1 SAFETY BULLETIN 23 – Annex 1
Affected models:
| GPS Unit | GPS Core | Remedy |
|---|---|---|
| GP-80 | GN-8096C/D : 4850264 GN-8097C/D : 4850296 | No remedy available |
| GP-90 | GN-8096C/D : 4850264 GN-8097C/D : 4850296 | No remedy available |
| GP-150 | GN-8096C/D : 4850264 GN-8097C/D : 4850296 | Update to V4.05 |
| GP-1640 | GN-8096C/D : 4850264 GN-8097C/D : 4850296 | No remedy available |
| GP-1650 | GN-8096C/D : 4850264 GN-8097C/D : 4850296 | No remedy available |
| GP-1850 | GN-8096C/D : 4850264 GN-8097C/D : 4850296 | No remedy available |
| GP-7000 | GN-8096C/D : 4850264 GN-8097C/D : 4850296 | No remedy available |
| GP-3500 | GN-8096C/D : 4850264 GN-8097C/D : 4850296 | Update to V6.03 |
| GP-70 Mk2 | GB-97 (GN-8098) : 4850311 | No remedy available |
| GP-188 | GB-97 (GN-8098) : 4850311 | No remedy available |
| GP-280/380/680 | GB-97 (GN-8098) : 4850311 | No remedy available |
| GP-8000 | GB-97 (GN-8098) : 4850311 | No remedy available |
| PS-8000 Mk2 | GB-97 (GN-8098) : 4850311 | No remedy available |
| FRS-1000 | GB-97 (GN-8098) : 4850311 | No remedy available |
| GP-1800 | GB-97 (GN-8098) : 4850311 | No remedy available |
| GP-500 Mk2 | GB-97 (GN-8098) : 4850311 | No remedy available |
| GP-3100 Mk2 | GB-97 (GN-8098) : 4850311 | No remedy available |
| GP-3300 | GB-97 (GN-8098) : 4850311 | No remedy available |
| GP-32 | GN-8093 : 4850264 | No remedy available |
| GP-37 | GN-8093 : 4850264 | No remedy available |
| GP-33 *Serial Numbers Before : 6412-8194 | GN8093D/E/F/G/H : 4850264 | Update to V2.04 |
| GP-32B | GH-8299 | No remedy available |
| GP-330B *Serial Numbers Before : 4457-7001 | GH-8299 | No remedy available |
| WS-200 | GH-8299 | No remedy available |
| FA-50 | GN8093D/E/F/G/H : 4850264 | Update to V2.02 |
| FA-150 | GN8093D/E/F/G/H : 4850264 | Update to V4.07 |
| SC-30 | GN8094C/D/E/F/G : 4850263 | Update to V3.03 |
| SC-50/110 | GN8094C/D/E/F/G : 4850263 | Update to V2.02 |
| **FELCOM-15/16 | GN8097B/C/D : 4850296 | Update to V3.13 / V5.07 |
| **FELCOM-18 *Serial Numbers Before : 4507-4045 | GN8097B/C/D : 4850296 | Update to V1.20 |
| **FELCOM-19 *Serial Numbers Before : 3599-2507 | GN8097B/C/D : 4850296 | Update to V1.20 |
| ** FELCOM-15 / FELCOM-16 / FELCOM-18 / FELCOM-19 – These units will only be affected by the GPS Rollover event if they are using the built in GPS receiver. If these units are connected to external GPS data, no action required. |
3. Annex 2
3.1 SAFETY BULLETIN 23 – Annex 2
Cold start procedure:
| Model | Procedure |
|---|---|
| GP-70MK2 | Menu > 0 > NEXT > NEXT > Down Arrow > Reverse Mark > ENT |
| GP-188 | Menu > 9 > 9 > 0 > 9 > 1 > 8 > 8 > ENT |
| GP-80 | Menu > 9 > 9 > Clear GPS > Yes > ENT |
| GP-90 | Menu > 9 > 9 > Clear GPS > Yes > ENT |
| GP-150 | Menu > 9 > 9 > Clear GPS > Yes > ENT |
| GP-1640 | Menu > Configuration > System Menu > Memory/Trip Clear > Clear GPS Memory |
| GP-1650 / GP1850 | Menu > Configuration > System Menu > Memory/Trip Clear > Clear GPS Memory |
| GP-280 / GP-380 / GP-680 | Menu > 9 > 2 > Cold Start > Yes |
| GP-1800 | Menu > 9 > Clear Memory > GPS > ENT *Then turn power off / on |
| GP-500 Mk2 | Menu > 9 > 6 > CLR > 1 > ENT |
| FRS-1000 | PLTR MENU/ESC > 0 > 7 > Page 4 “Back to Defaults” > GPS RCVR > ENT > ENT |
| PS-8000 Mk2 | PLTR MENU/ESC > 0 > 7 > Clear Memory > GPS > ENT > ENT |
| GP-7000 | Menu > Advanced > Input/Output > Internal GPS setup > Restart GPS |
| GP-8000 | Menu > 8 > Down Arrow > Clear Memory > All |
| GP-3100 / GP-3300 | Menu > 8 > GPS Initial Settings > Cold Start > Yes |
| GP-3500 | Menu 0 > 6 > 5 > GPS Cold Start |
| GP32 / GP-37 | Menu > Erase > ENT > GPS Data > ENT > Erase GPS Data > Yes > ENT |
| GP-33 | Menu > System > ENT > Reset > ENT > GPS > ENT > On > ENT > Yes > ENT |
| GP-320B | When NAV1 is connected it is available from “GPS Sensor Settings” |
| GP-330B | Unit activates a Cold Start at every start up |
| WS-200 | Unit activates a Cold Start at every start up |
| FA-50 | Cold Start from Menu is not available |
| FA-150 | Menu > Diagnostics > Memory Clear > GPS Cold Start |
| SC-30 | Unit activates a Cold Start at every start up |
| SC-50 / SC-110 | Menu > Erase > GPS Data > Yes > ENT |
| FELCOM-15/16 | Cold Start from Menu is not available |
| FELCOM-18/19 | Cold Start from Menu is not available |