Everyone is reporting on "Air traffic chaos caused by 'one in 15 million' event". https://www.bbc.co.uk/news/business-66723586

But the report says "This scenario had never been encountered before, with the system having previously processed more than 15 million flight plans" https://www.nats.aero/news/nats-report-into-air-traffic-control-incident-details-root-cause-and-solution-implemented/

Air traffic chaos caused by 'one in 15 million' event

The UK's air traffic control system shut itself down after software confusion over an unusual flight path.

BBC News
@standupmaths I’m super interested in why the system imported bad data and then decided to halt because of the data, instead of maybe halting before it imported the data. 🤷‍♀️ Actually I’m even more interested in how the teams that wrote the code are structured… did nobody on any team consider this could happen? Is there a Jira ticket in the backlog to address it that’s been there a while? So many questions!
@RobeeShepherd @standupmaths Jira never made anything better