14 August 2013
United flight 131 , Boeing 757-200 from London Heathrow to Washington Dulles with 147 passengers and 9 crew members it was en route near Dublin Ireland when the crew reported smoke inside cockpit.They declared an emergency and diverted to Dublin for a safe landing
Dublin airport
Source
http://www.mirror.co.uk/news/world-news/united-airlines-washington-bound-plane-2165983