As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, A-LOOP LIGHT NR 2 ENGINE ILLUMINATED; SUBSEQUENTLY FIRE WARNING OCCURRED. FIRE WARNING CEASED WHEN THROTTLE RETARDED TO IDLE. REPLACED NR 2 ENGINE FUEL HEATER TUBING FROM 13TH STAGE TO ENGINE ANTI-ICE VALVE. RAN ENGINE AND PERFORMED LEAK CHECK AND NO DEFECTS NOTED IAW WITH MM 73-11-2 AND 75-10-2.