As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) MAINTENANCE NOTICED A BURNING ODOR IN AFT CARGO BAY WHILE PREFORMING A WINTERIZATION PROGRAM AND 'A' CHECK AFT CARGO WATER FILL LINE RIBBON HEATER FOUND DAMAGED BURNED NO FLAMES OR SMOKE REPORTED AND DAMAGE CONTAINED BY INSULATION COVERING HEATER RIBBON. NO LITTER WAS FOUND IN VICINITY OF THE DAMAGE. NOTE: THIS IS SAME AIRCRAFT INVOLVED IN SIMILAR INCIDENT THIS YEAR, AIRCRAFT IS PRESENTLY BEING FLOWN TO MONTREAL MAINTENANCE BASE FOR INVESTIGATION AND REPAIRS.