As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MXP - STRONG ELECTRICAL BURNING SMELL BETWEEN ROWS 17 AND 30 (AB SIDE). SMELL WENT AWAY IMMEDIATELY WHEN POWERPORTS WERE TURNED OFF. FLIGHT LANDED MXP WITHOUT INCIDENT. RESET CIRCUIT BREAKER AND CHECKED POWERPORT FROM 17AB TO 30AB AND NO BURNING SMELL NOTED. SYSTEM GROUND CHECK NORMAL OPERATION.