As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW INFLIGHT T1205/21JUN. CREW REPORTED NR ONE ENGINE FIRE WARNING AFTER TAKEOFF. CREW SHUT DOWN NR ONE ENGINE. RETURNED TO DFW AND LANDED WITHOUT INCIDENT. FOUND NOSE COWL ANTI ICE VALVE BROKEN OFF AT THE FLANGE. REPLACED NOSE COWL ANTI ICE VALVE. SYSTEM GROUND CHECKED NORMAL OPERATION. (A)