EMERGENCY A man opened a Boeing 737 security door just for air!
PHOTO A man on board China Southern #CZ3963 flight opened the Boeing 737 security door just for air!- @mazepenghaha pic.twitter.com/x97L2rPHUr — AIRLIVE (@airlivenet) March 9, 2016 The cabin crew and passengers on China Southern Airlines flight CZ3693 got a rude shock Wednesday morning when a passenger onboard the flight opened the emergency exit door before…