As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED AFTER DEPARTURE, AN EMERGENCY HORN SOUNDED, ALL SYSTEMS CHECKED OK. PILOT REQUESTED RETURN FOR MAINTENANCE, NO EMERGENCY DECLARED. MAINTENANCE FOUND A FIRE LOOP ON NR 1 ENGINE GROUNDING OUT. REPOSTIONED FIRE LOOP, OPS CHECKED NORMAL AT THIS TIME.