Thousands of passengers are suffering for a second day at many European airports, including Heathrow, after a cyberattack that has shut down the check-in and luggage system.

There were hundreds of delays on flights on Saturday following software damage used by many airlines, with airports affecting passengers using pens and paper, the BBC notes.

Cancels half Monday’s flights of Brussels Airport

Brussels Airport said it “still has no indication” of when the system will work again and asked the airlines to cancel half of their departures on Monday.

RTX, owned by Collins Aerospace software company, said that “she is aware of a cyberattack disorder” in her system at “selected airports” and hopes to solve the problem as soon as possible.

Recognize Muse software – which allows different airlines to use the same check -in and boarding gates at an airport, instead of demanding their own – as the system that had been affected.

The company has not yet revealed what went wrong or how long the interruption is expected, but said Sunday that it would “provide details as soon as they are available”.

Brussels Airport announced that “due to cyberattack against Collins Aerospace” only manual check-in and boarding are possible.

He added that the interruption will continue on Monday, “because Collins Aerospace is not yet able to deliver a new safe version of the check-in system.”

Heathrow Airport announced on Sunday that efforts to solve the problem are continuing. He refused to answer whether the problem was cyberattack.

He apologized to those who faced delays, but stressed that “the overwhelming majority of flights continued to operate”, urging passengers to control their flight status before going to the airport.

According to the BBC, about half of Heathrow’s flying airlines had returned until Sunday, including British Airways, which has been using a backup system since Saturday.

A Berlin Airport spokesman told the BBC that some airlines were still boarding passengers and that there were no evidence of how long the electronic interruption would last.

Many cancellations on Sunday

According to Cirium flight data company, so far more cancellations have already been canceled at Heathrow, Berlin and Brussels Airports than during Saturday, although not all of the cyberattack is due.

According to the FlightWare flight monitoring company, on Saturday, queues were formed that lasted hours and about 47% of Heathrow departures were delayed. Additional staff were on alert in the check-in zones to help minimize disorders.

Until Sunday afternoon, Flightaware figures showed that the number of delayed flights from Heathrow had decreased compared to Saturday levels.

Virgin Atlantic, which runs flights from Heathrow, said that “it has been informed of a technical problem that affects check-in at various airports, which may cause some delays in departures.”

He added that “at present, all Virgin Atlantic flights are scheduled to depart as defined.”

Naomi Rowan, from Sudbury to Suffolk, was to move to Costa Rica with Dusty’s dog, but now both are in a hotel, after their flight with Air France from Heathrow on Saturday was influenced by cyberattack.

He said that staff were boarding passengers with pen and paper because of the interruption, but she was told that they could not board Dusty without the electronic system.

“I cried, closed a hotel and managed to contact Air France via Whatsapp, who told me that the next available flight for me is Monday,” he said.

The European Air Force Security Organization, Eurocontrol, said airlines were asked to cancel half of their flights to and from the airport by 02:00 on Monday due to the interruption.

Meanwhile, Dublin Airport said, while technical problems were continuing and some airlines continued to carry out a manual check-in, operating normally on Sunday.

One spokesman told the BBC: “Passengers must contact their airline directly for their flight updates.”

Dublin Airport had previously announced that the Cork Airport, which belongs to the same parent company, had undergone a “small effect” by cyberattack, but Cork Airport then said that it had not had disorders and that all services were operating normally.

Berlin-Vrandeburg Airport asks travelers to use online check-in or self-service check-in instead of the counter as long as the problem lasts.

He announced that there were 12 cancellations to and from the airport on Saturday, but that the delays were generally less than 45 minutes.