As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HUF - FIRE WARNING BELL SOUNDS ON TAKEOFF. NO LIGHTS. CANNOT SILENCE EXCEPT BY PULLING NR 2 ENGINE DETECTOR CIRCUIT BREAKER. FOUND LOWER LOOP ON NR 2 ENGINE TO BE FAILING. REMOVED AND REPLACED LOOP. SYSTEM CHECKS GOOD IAW 26-10-00. NOTE: THE INCIDENT HAPPENED ON A FLIGHT OPERATED BY U. S. MARSHALL SERVICES AND RESULTED IN A FLIGHT RETURN.