As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT, THE RIGHT ENGINE EXPERIENCED A FIRE WARNING INDICATION. CREW REDUCED RIGHT ENGINE THRUST TO IDLE SETTING AND LIGHT EXTINGUISHED. AIRCRAFT RETURNED TO DTW AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE RIGHT ENGINE FUEL HEAT ANTI-ICE DUCT. AIRCRAFT RETURNED TO SERVICE.