As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB OUT THRU 6500 FEET, RIGHT FIRE LIGHT CAME ON WITH RIGHT FIRE FAULT DET SYSTEM. RAN APPROPRIATE CHECKLIST AND DETERMINED IT WAS A FIRE DETECTION SYSTEM, DECLARED AN EMERGENCY AND RETURNED FOR LANDING. TROUBLESHOT THE RT FIRE DETECTOR SYSTEM, REMOVED & REPLACED THE RT FIRE DETECTOR CONTROL BOX. SYSTEM OPS CHECKED GOOD IAW MM 26-11-02.