As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE NR 1 FUEL FILTER BYPASSES LIGHT ILLUMINATED IN FLIGHT. THE CREW DIVERTED AND LANDED WITHOUT INCIDENT. TROUBLESHOOTING WAS CARRIED OUT AND THE FUEL FILTER DIFFERENTIAL PRESSURE SWITCH WAS FOUND FAILED AND REPLACED ALONG WITH THE FUEL FILTER.