As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMELLED A STRONG BURNING ELECTRICAL WIRING ODOR COMING FROM FLIGHT CREW REST AREA. SMOKE ODOR CARD 05-96-70 WAS ACCOMPLISHED. PERFORMED INSPECTION OF WIRING IN THE CREW REST AREA, WITH NO FINDINGS. MTC FOUND FORWARD CREW BUNK HEATER SHUTOFF VALVE WAS NOT OPENING CAUSING AN OVERHEAT SITUATION. REMOVED AND REPLACED SHUTOFF VALVE IAW AMM 21-29-10.