Serious incident to the Airbus A320 registered EC-JFN and operated by Iberia on 03/07/2018 at Madrid [Investigation led by CIAIAC / Spain]

Preliminary data based on the notification from the Spanish authorities:

During ascent smoke was detected in the cockpit and passenger cabin. Crew and passengers put on their oxygen masks and declared emergency. The aircraft returned to LEMD without further events. No damages to the aircraft.