As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 56 - EWR - ON TAKEOFF WARNING BELL CAME ON AIRCRAFT RETURNED TO EWR 'NO EMERGENCY DECLARED'. MAINTENANCE FOUND DAMAGE TO FIRE LOOP FWD HALF. REPAIRED AND REPLACED DAMAGED AREA AND PARTS. OPS CHECKED, SYSTEMS ALL NORMAL. AIRCRAFT DEPARTED NO FURTHER OCCURANCE. (W)