Air travellers are facing another day of disruption at several European airports, including Heathrow, after a cyber-attack knocked out a check-in and baggage system.
There were hundreds of delays on Saturday after the software used by several airlines failed, with affected airports boarding passengers using pen and paper.
Brussels Airport said it had 'no indication yet' when the system would be functional again and had asked airlines to cancel half their departing flights.
RTX, which owns software provider Collins Aerospace, confirmed a 'cyber-related disruption' affecting its systems in 'select airports', hoping for a swift resolution.
The Muse software, enabling multiple airlines to operate through shared check-in desks and boarding gates at airports, was identified as the primary issue.
Heathrow reported on Sunday that efforts to resolve the problem were ongoing. The airport has apologized for the delays but noted that 'the vast majority of flights have continued to operate', urging passengers to check their flight status before arriving.
Brussels Airport stated that manual check-ins would persist on Sunday and additional staff had been brought in to help reduce disruption.
England and more broadly in the continent continue to manage the impact of this cyber attack, with the National Cyber Security Centre supporting affected airports as investigations proceed.
