As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT ENGINE FIRE LIGHT DIMLY FLICKERED ON AND OFF OVER TEN TIMES ON APPROACH AND LANDING. ANTI-ICE ON OVER OFF MADE NO DIFFERENCE NOT DID MODERATE POWER TO IDLE. TROUBLESHOT THE R ENGINE FIRE DETECTION SYSTEM AND INSPECTED RT ENGINE FIRE DETECTION SYSTEM IAW AMM 26-11-00 WITH NO DISCREPANCIES NOTED. SWAPPED THE LEFT AND RIGHT FIRE DETECTION CONTROL UNITS FOR CONVENIENCE IAW AMM 26-11-02.