What was found
WHILE ON GROUND WITH APU RUNNING AND BLEED AIR ON HAD BURNING ODOR COMING THRU COCKPIT DUCTS. REMOVED & REPLACED DEFECTIVE TEMP CONTROLLER OPERATIONAL CHECK OF ECS SYSTEM NORMAL. WORK PERFORMED IAW MM 21-61-00 & 21-51-00.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE ON GROUND WITH APU RUNNING AND BLEED AIR ON HAD BURNING ODOR COMING THRU COCKPIT DUCTS. REMOVED & REPLACED DEFECTIVE TEMP CONTROLLER OPERATIONAL CHECK OF ECS SYSTEM NORMAL. WORK PERFORMED IAW MM 21-61-00 & 21-51-00.