As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLT 3418 - THE CREW REPORTED A BURNING SMELL IN THE COCKPIT WHEN SELECTING HEAT FROM THE NR 1 AIRCONDITIONING PACK DURING FLIGHT. MAINTENANCE PERFORMED OPERATIONAL CHECK OF THE NR 1 AIRCONDITIONING PACK IAW EMB-120MM 21-40-00 AND NO DEFECTS WERE NOTED. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. (M)