As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH, RIGHT ENGINE FIRE WARNING ON. AIRCRAFT INSPECTED FOR EVIDENCE OF DAMAGE OR EXHAUST LEAK. NONE NOTED. EXTENSIVE GROUND RUNS COULD NOT DUPLICATE. AIRCRAFT RETURNED TO SERVICE. FURTHER DETAILED INSPECTION FOUND WIRES TO ONE FIRE DETECTOR CHAFED. INSULATED WIRES REROUTED AND SECURED WIRE BUNDLE. EXTENSIVE OPS CHECK, FLIGHT INCLUDING SEVERAL APPROACHES PERFORMED TO VERIFY FIX.