As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 4341 - ELECTRICAL SMELL IN COCKPIT. MAINTENANCE REMOVED AND REPLACED NR 2 ENGINE IAW ATR MM. OPERATIONAL AND LEAK CHECK WAS GOOD. ALSO, FOUND AVIONICS COMPARTMENT VENT DUCT CLAMPS LOOSE. DUCT CLAMPS WERE TIGHTENED AND AIRCRAFT WAS RETURNED TO SERVICE. (M)