As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRE DETECT CH B - BATT - TRIP CAME ON IN FLIGHT ON EMS. ATTEMPTED RESET ON BATTERY POWER ON THE GROUND. BUT DID NOT RESET. REMOVED FIDEX AND INSTALLED INSPECTED/TESTED FIDEX CU IAW AMM 26-10-01. COMPLIED WITH OPERATIONAL TEST OF THE FIRE DETECTION AND EXTINGUISHING CONTROL CIRCUITS, ARM AND DISCHARGE CIRCUITS WITH NO DEFECTS NOTED.