As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6506 - IAD-LGA - DURING CRUISE, AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO LEFT OVERHEAT LOOP WARNING LIGHT ILLUMINATED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND RESECURED LOOSE FIRE LOOP IN AFT JET PIPE AREA. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)