"Planes from Gothenburg's Landvetter and Umeå to Stockholm are grounded, because we are trying to keep the skies clean. The planes that were in the air over Stockholm and were going down were forced to land by eye," said Åsa Öhman, press officer at the state company Swedavia, which is in charge of the country's airports; she also cited major problems with data communication in the air traffic control system.
Among other side-effects, football team Malmo FF got stuck in an aircraft about to depart, and got stranded at the airport instead.
Technical problems in LFV´s communication system affect air traffic across Sweden. Find info about your flight here: https://t.co/NAlfeikU0P— SAS (@SAS) May 19, 2016
"It will take a while before we are running at full capacity," Per Fröberg, Press Officer at Civil Aviation Authority, told Aftonbladet, blaming a computer glitch that created major radar problems.
However, the underlying cause of the accident has not yet been made clear. Swedish Civil Contingencies Agency, MSB, is keeping track of the event, and it is not yet considered a police issue.
The technical problems with LFV radar facility is solved. The Air traffic is back to normal. However there can be some delays— Swedavia (@Swedavia) May 19, 2016
"Somebody must now take responsibility for it to never happen again. These breakdowns have now occurred twice since November. If you shut down the airspace, the problems quickly snowball. Not to mention, a stoppage of only a few hours can cost millions," he told newspaper Kristianstadsbladet.