Victor Tropolini says he put man in headlock before other travelers and crew members tied him up, ahead of emergency landing in Serbia: 'It was a very scary situation'

Several said to light up in-flight while waiting after Israir plane from Israel makes unscheduled landing in Thessaloniki due to weather conditions in capital

Wizz Air plane makes emergency landing after unruly traveler reportedly tried to open an emergency exit mid-flight

Plane lands in Krakow, is sent to isolated area before cabin crew tell passengers to leave plane via slides; second such incident within a week involving Wizz Air carrier

'We've never seen anything like this,' says head of workers union as manpower reduced by 70%, half of main terminal shuttered