As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GATE RETURN: F/A REPORTED SMOKE IN CABIN WITH ELECTRICAL SMELL. MAINTENANCE C/W WORK SCOPE FOR SMOKE IN CABIN. NO DEFECTS FOUND. PERFORMED HIGH POWER ENG RUN W/PACKS ON; PERFORMED APU RUN W/PACKS ON; NO SMOKE IN CABIN. PERFORMED OPC OF PACKS IAW AMM 21-51-00. OPC GOOD. REF TL-218787-2011.